Title Page

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GE Industrial Systems

B30 Bus Differential Relay

UR Series Instruction Manual

B30 revision: 4.9x

Manual P/N: 1601-0109-M2 (GEK-113119A)

Copyright © 2006 GE Multilin

836770A1.CDR

T
GIS ERE
RE

GE Multilin ISO9001:2000
EM I
G

215 Anderson Avenue, Markham, Ontario U LT I L

Canada L6E 1B3
GE Multilin's Quality Management
Tel: (905) 294-6222 Fax: (905) 201-2098 System is registered to
ISO9001:2000
Internet: http://www.GEindustrial.com/multilin QMI # 005094
UL # A3775
Addendum

g Addendum

GE Industrial Systems

ADDENDUM
This Addendum contains information that relates to the B30 Bus Differential Relay relay, version 4.9x. This addendum
lists a number of information items that appear in the instruction manual GEK-113119A (revision M2) but are not
included in the current B30 operations.
The following functions/items are not yet available with the current version of the B30 relay:
• N/A
Version 4.0x and higher releases of the B30 relay includes new hardware (CPU and CT/VT modules).
• The new CPU modules are specified with the following order codes: 9E, 9G, 9H, 9J, 9K, 9L, 9M, 9N, 9P, and 9R.
• The new CT/VT modules are specified with the following order codes: 8F, 8G, 8H, 8J.
The following table maps the relationship between the old CPU and CT/VT modules to the newer versions:

MODULE OLD NEW DESCRIPTION

CPU 9A 9E RS485 and RS485 (Modbus RTU, DNP)
9C 9G RS485 and 10Base-F (Ethernet, Modbus TCP/IP, DNP)
9D 9H RS485 and redundant 10Base-F (Ethernet, Modbus TCP/IP, DNP)
-- 9J RS485 and multi-mode ST 100Base-FX
-- 9K RS485 and multi-mode ST redundant 100Base-FX
-- 9L RS485 and single mode SC 100Base-FX
-- 9M RS485 and single mode SC redundant 100Base-FX
-- 9N RS485 and 10/100Base-T
-- 9P RS485 and single mode ST 100Base-FX
-- 9R RS485 and single mode ST redundant 100Base-FX
CT/VT 8A 8F Standard 4CT/4VT
8B 8G Sensitive Ground 4CT/4VT
8C 8H Standard 8CT
8D 8J Sensitive Ground 8CT/8VT

The new CT/VT modules can only be used with the new CPUs (9E, 9G, 9H, 9J, 9K, 9L, 9M, 9N, 9P, 9R), and the old CT/
VT modules can only be used with the old CPU modules (9A, 9C, 9D). To prevent any hardware mismatches, the new
CPU and CT/VT modules have blue labels and a warning sticker stating “Attn.: Ensure CPU and DSP module label
colors are the same!”. In the event that there is a mismatch between the CPU and CT/VT module, the relay will not
function and a DSP ERROR or HARDWARE MISMATCH error will be displayed.
All other input/output modules are compatible with the new hardware.
With respect to the firmware, firmware versions 4.0x and higher are only compatible with the new CPU and CT/VT mod-
ules. Previous versions of the firmware (3.4x and earlier) are only compatible with the older CPU and CT/VT modules.
Table of Contents

TABLE OF CONTENTS

1. GETTING STARTED 1.1 IMPORTANT PROCEDURES

1.1.1 CAUTIONS AND WARNINGS ........................................................................... 1-1
1.1.2 INSPECTION CHECKLIST ................................................................................ 1-1
1.2 UR OVERVIEW
1.2.1 INTRODUCTION TO THE UR ........................................................................... 1-2
1.2.2 HARDWARE ARCHITECTURE ......................................................................... 1-3
1.2.3 UR SOFTWARE ARCHITECTURE ................................................................... 1-4
1.2.4 IMPORTANT UR CONCEPTS........................................................................... 1-4
1.3 ENERVISTA UR SETUP SOFTWARE
1.3.1 REQUIREMENTS .............................................................................................. 1-5
1.3.2 SOFTWARE INSTALLATION ............................................................................ 1-5
1.3.3 CONNECTING THE ENERVISTA UR SETUP SOFTWARE WITH THE B30 ... 1-7
1.4 UR HARDWARE
1.4.1 MOUNTING AND WIRING............................................................................... 1-10
1.4.2 COMMUNICATIONS........................................................................................ 1-10
1.4.3 FACEPLATE DISPLAY .................................................................................... 1-10
1.5 USING THE RELAY
1.5.1 FACEPLATE KEYPAD..................................................................................... 1-11
1.5.2 MENU NAVIGATION ....................................................................................... 1-11
1.5.3 MENU HIERARCHY ........................................................................................ 1-11
1.5.4 RELAY ACTIVATION....................................................................................... 1-12
1.5.5 RELAY PASSWORDS ..................................................................................... 1-12
1.5.6 FLEXLOGIC™ CUSTOMIZATION................................................................... 1-12
1.5.7 COMMISSIONING ........................................................................................... 1-13

2. PRODUCT DESCRIPTION 2.1 INTRODUCTION

2.1.1 OVERVIEW........................................................................................................ 2-1
2.1.2 ORDERING........................................................................................................ 2-2
2.2 SPECIFICATIONS
2.2.1 PROTECTION ELEMENTS ............................................................................... 2-6
2.2.2 USER-PROGRAMMABLE ELEMENTS ............................................................. 2-7
2.2.3 MONITORING .................................................................................................... 2-8
2.2.4 METERING ........................................................................................................ 2-8
2.2.5 INPUTS .............................................................................................................. 2-8
2.2.6 POWER SUPPLY .............................................................................................. 2-9
2.2.7 OUTPUTS .......................................................................................................... 2-9
2.2.8 COMMUNICATIONS........................................................................................ 2-10
2.2.9 INTER-RELAY COMMUNICATIONS ............................................................... 2-11
2.2.10 ENVIRONMENTAL .......................................................................................... 2-11
2.2.11 TYPE TESTS ................................................................................................... 2-12
2.2.12 PRODUCTION TESTS .................................................................................... 2-12
2.2.13 APPROVALS ................................................................................................... 2-12
2.2.14 MAINTENANCE ............................................................................................... 2-12

3. HARDWARE 3.1 DESCRIPTION

3.1.1 PANEL CUTOUT ............................................................................................... 3-1
3.1.2 MODULE WITHDRAWAL AND INSERTION ..................................................... 3-4
3.1.3 REAR TERMINAL LAYOUT............................................................................... 3-5
3.2 WIRING
3.2.1 TYPICAL WIRING.............................................................................................. 3-6
3.2.2 DIELECTRIC STRENGTH ................................................................................. 3-7
3.2.3 CONTROL POWER ........................................................................................... 3-7
3.2.4 CT/VT MODULES .............................................................................................. 3-8
3.2.5 CONTACT INPUTS/OUTPUTS ....................................................................... 3-10
3.2.6 TRANSDUCER INPUTS/OUTPUTS ................................................................ 3-17
3.2.7 RS232 FACEPLATE PORT ............................................................................. 3-18
3.2.8 CPU COMMUNICATION PORTS .................................................................... 3-18
3.2.9 IRIG-B .............................................................................................................. 3-21

GE Multilin B30 Bus Differential Relay v

 TABLE OF CONTENTS

3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS

3.3.1 DESCRIPTION .................................................................................................3-22
3.3.2 FIBER: LED AND ELED TRANSMITTERS ......................................................3-24
3.3.3 FIBER-LASER TRANSMITTERS .....................................................................3-24
3.3.4 G.703 INTERFACE...........................................................................................3-25
3.3.5 RS422 INTERFACE .........................................................................................3-28
3.3.6 RS422 AND FIBER INTERFACE .....................................................................3-30
3.3.7 G.703 AND FIBER INTERFACE ......................................................................3-30
3.3.8 IEEE C37.94 INTERFACE................................................................................3-31
3.3.9 C37.94SM INTERFACE ...................................................................................3-33

4. HUMAN INTERFACES 4.1 ENERVISTA UR SETUP SOFTWARE INTERFACE

4.1.1 INTRODUCTION ................................................................................................4-1
4.1.2 CREATING A SITE LIST ....................................................................................4-1
4.1.3 ENERVISTA UR SETUP OVERVIEW ................................................................4-1
4.1.4 ENERVISTA UR SETUP MAIN WINDOW..........................................................4-3
4.2 FACEPLATE INTERFACE
4.2.1 FACEPLATE .......................................................................................................4-4
4.2.2 LED INDICATORS..............................................................................................4-5
4.2.3 DISPLAY.............................................................................................................4-8
4.2.4 KEYPAD .............................................................................................................4-8
4.2.5 MENUS ...............................................................................................................4-8
4.2.6 CHANGING SETTINGS ...................................................................................4-10

5. SETTINGS 5.1 OVERVIEW

5.1.1 SETTINGS MENU ..............................................................................................5-1
5.1.2 INTRODUCTION TO ELEMENTS ......................................................................5-3
5.1.3 INTRODUCTION TO AC SOURCES..................................................................5-5
5.2 PRODUCT SETUP
5.2.1 PASSWORD SECURITY....................................................................................5-7
5.2.2 DISPLAY PROPERTIES ....................................................................................5-8
5.2.3 CLEAR RELAY RECORDS ................................................................................5-9
5.2.4 COMMUNICATIONS ........................................................................................5-10
5.2.5 MODBUS USER MAP ......................................................................................5-22
5.2.6 REAL TIME CLOCK .........................................................................................5-22
5.2.7 USER-PROGRAMMABLE FAULT REPORT....................................................5-22
5.2.8 OSCILLOGRAPHY ...........................................................................................5-23
5.2.9 USER-PROGRAMMABLE LEDS .....................................................................5-25
5.2.10 USER-PROGRAMMABLE SELF TESTS .........................................................5-28
5.2.11 CONTROL PUSHBUTTONS ............................................................................5-29
5.2.12 USER-PROGRAMMABLE PUSHBUTTONS....................................................5-30
5.2.13 FLEX STATE PARAMETERS ..........................................................................5-31
5.2.14 USER-DEFINABLE DISPLAYS ........................................................................5-32
5.2.15 DIRECT INPUTS/OUTPUTS ............................................................................5-34
5.2.16 INSTALLATION ................................................................................................5-39
5.3 SYSTEM SETUP
5.3.1 AC INPUTS.......................................................................................................5-40
5.3.2 POWER SYSTEM ............................................................................................5-41
5.3.3 SIGNAL SOURCES ..........................................................................................5-42
5.3.4 FLEXCURVES™ ..............................................................................................5-44
5.3.5 BUS ..................................................................................................................5-51
5.4 FLEXLOGIC™
5.4.1 INTRODUCTION TO FLEXLOGIC™................................................................5-52
5.4.2 FLEXLOGIC™ RULES .....................................................................................5-58
5.4.3 FLEXLOGIC™ EVALUATION ..........................................................................5-58
5.4.4 FLEXLOGIC™ EXAMPLE ................................................................................5-59
5.4.5 FLEXLOGIC™ EQUATION EDITOR................................................................5-63
5.4.6 FLEXLOGIC™ TIMERS ...................................................................................5-63
5.4.7 FLEXELEMENTS™ ..........................................................................................5-64
5.4.8 NON-VOLATILE LATCHES ..............................................................................5-68

vi B30 Bus Differential Relay GE Multilin

 TABLE OF CONTENTS

5.5 GROUPED ELEMENTS

5.5.1 OVERVIEW...................................................................................................... 5-69
5.5.2 SETTING GROUP ........................................................................................... 5-69
5.5.3 BUS DIFFERENTIAL ....................................................................................... 5-69
5.5.4 PHASE CURRENT .......................................................................................... 5-73
5.5.5 NEUTRAL CURRENT...................................................................................... 5-81
5.5.6 GROUND CURRENT....................................................................................... 5-83
5.5.7 BREAKER FAILURE ........................................................................................ 5-85
5.5.8 VOLTAGE ELEMENTS .................................................................................... 5-94
5.6 CONTROL ELEMENTS
5.6.1 OVERVIEW...................................................................................................... 5-99
5.6.2 SETTING GROUPS ......................................................................................... 5-99
5.6.3 SELECTOR SWITCH..................................................................................... 5-100
5.6.4 DIGITAL ELEMENTS..................................................................................... 5-106
5.6.5 DIGITAL COUNTERS .................................................................................... 5-109
5.6.6 MONITORING ELEMENTS ........................................................................... 5-111
5.7 INPUTS/OUTPUTS
5.7.1 CONTACT INPUTS........................................................................................ 5-112
5.7.2 VIRTUAL INPUTS.......................................................................................... 5-114
5.7.3 CONTACT OUTPUTS.................................................................................... 5-115
5.7.4 VIRTUAL OUTPUTS ...................................................................................... 5-117
5.7.5 REMOTE DEVICES ....................................................................................... 5-118
5.7.6 REMOTE INPUTS.......................................................................................... 5-119
5.7.7 REMOTE OUTPUTS...................................................................................... 5-120
5.7.8 RESETTING................................................................................................... 5-121
5.7.9 DIRECT INPUTS/OUTPUTS ......................................................................... 5-121
5.8 TRANSDUCER INPUTS/OUTPUTS
5.8.1 DCMA INPUTS .............................................................................................. 5-125
5.8.2 RTD INPUTS.................................................................................................. 5-126
5.8.3 DCMA OUTPUTS .......................................................................................... 5-126
5.9 TESTING
5.9.1 TEST MODE .................................................................................................. 5-130
5.9.2 FORCE CONTACT INPUTS .......................................................................... 5-130
5.9.3 FORCE CONTACT OUTPUTS ...................................................................... 5-131

6. ACTUAL VALUES 6.1 OVERVIEW

6.1.1 ACTUAL VALUES MAIN MENU ........................................................................ 6-1
6.2 STATUS
6.2.1 CONTACT INPUTS............................................................................................ 6-3
6.2.2 VIRTUAL INPUTS.............................................................................................. 6-3
6.2.3 REMOTE INPUTS.............................................................................................. 6-3
6.2.4 CONTACT OUTPUTS........................................................................................ 6-4
6.2.5 VIRTUAL OUTPUTS .......................................................................................... 6-4
6.2.6 REMOTE DEVICES ........................................................................................... 6-4
6.2.7 DIGITAL COUNTERS ........................................................................................ 6-5
6.2.8 SELECTOR SWITCHES.................................................................................... 6-5
6.2.9 FLEX STATES ................................................................................................... 6-5
6.2.10 ETHERNET........................................................................................................ 6-6
6.2.11 DIRECT INPUTS................................................................................................ 6-6
6.2.12 DIRECT DEVICES STATUS.............................................................................. 6-7
6.2.13 EGD PROTOCOL STATUS ............................................................................... 6-7
6.3 METERING
6.3.1 METERING CONVENTIONS ............................................................................. 6-8
6.3.2 BUS ZONE....................................................................................................... 6-10
6.3.3 SOURCES ....................................................................................................... 6-10
6.3.4 TRACKING FREQUENCY ............................................................................... 6-12
6.3.5 FLEXELEMENTS™ ......................................................................................... 6-12
6.3.6 TRANSDUCER INPUTS/OUTPUTS ................................................................ 6-13
6.4 RECORDS
6.4.1 USER-PROGRAMMABLE FAULT REPORTS ................................................ 6-14
6.4.2 EVENT RECORDS .......................................................................................... 6-14

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 TABLE OF CONTENTS

6.4.3 OSCILLOGRAPHY ...........................................................................................6-14

6.5 PRODUCT INFORMATION
6.5.1 MODEL INFORMATION ...................................................................................6-15
6.5.2 FIRMWARE REVISIONS..................................................................................6-15

7. COMMANDS AND 7.1 COMMANDS

TARGETS 7.1.1 COMMANDS MENU ...........................................................................................7-1
7.1.2 VIRTUAL INPUTS ..............................................................................................7-1
7.1.3 CLEAR RECORDS .............................................................................................7-2
7.1.4 SET DATE AND TIME ........................................................................................7-2
7.1.5 RELAY MAINTENANCE .....................................................................................7-2
7.2 TARGETS
7.2.1 TARGETS MENU ...............................................................................................7-3
7.2.2 TARGET MESSAGES ........................................................................................7-3
7.2.3 RELAY SELF-TESTS .........................................................................................7-3

8. THEORY OF OPERATION 8.1 INTRODUCTION

8.1.1 BUS DIFFERENTIAL PROTECTION .................................................................8-1
8.2 DYNAMIC BUS REPLICA
8.2.1 DYNAMIC BUS REPLICA MECHANISM............................................................8-2
8.2.2 CT RATIO MATCHING .......................................................................................8-3
8.3 DIFFERENTIAL PRINCIPLE
8.3.1 BIASED DIFFERENTIAL CHARACTERISTIC....................................................8-4
8.3.2 DIFFERENTIAL AND RESTRAINING CURRENTS ...........................................8-5
8.3.3 ENHANCED SECURITY ....................................................................................8-6
8.4 DIRECTIONAL PRINCIPLE
8.4.1 CURRENT DIRECTIONAL PROTECTION.........................................................8-7
8.5 SATURATION DETECTOR
8.5.1 CT SATURATION DETECTION .........................................................................8-8
8.6 OUTPUT LOGIC AND EXAMPLES
8.6.1 OUTPUT LOGIC .................................................................................................8-9
8.6.2 INTERNAL AND EXTERNAL FAULT EXAMPLE ...............................................8-9

9. APPLICATION OF 9.1 OVERVIEW

SETTINGS 9.1.1 INTRODUCTION ................................................................................................9-1
9.1.2 SAMPLE BUSBAR AND DATA ..........................................................................9-1
9.2 ZONING AND DYNAMIC BUS REPLICA
9.2.1 DESCRIPTION ...................................................................................................9-3
9.2.2 NORTH BUS ZONE............................................................................................9-3
9.2.3 SOUTH BUS ZONE ............................................................................................9-4
9.3 BIASED CHARACTERISTIC BREAKPOINTS
9.3.1 DESCRIPTION ...................................................................................................9-5
9.3.2 HIGH BREAKPOINT...........................................................................................9-5
9.3.3 LOW BREAKPOINT ...........................................................................................9-6
9.4 SLOPES AND HIGH SET THRESHOLD
9.4.1 DESCRIPTION ...................................................................................................9-7
9.4.2 EXTERNAL FAULTS ON C-1 .............................................................................9-7
9.4.3 EXTERNAL FAULTS ON C-2 .............................................................................9-8
9.4.4 EXTERNAL FAULTS ON C-3 .............................................................................9-8
9.4.5 EXTERNAL FAULTS ON C-4 .............................................................................9-9
9.4.6 EXTERNAL FAULTS ON C-5 .............................................................................9-9
9.5 BUS DIFFERENTIAL SETTINGS
9.5.1 DESCRIPTION .................................................................................................9-10

viii B30 Bus Differential Relay GE Multilin

 TABLE OF CONTENTS

9.6 ENHANCING RELAY PERFORMANCE

9.6.1 USING SETTING GROUPS............................................................................. 9-11

A. FLEXANALOG A.1 PARAMETERS

PARAMETERS

B. MODBUS B.1 MODBUS RTU PROTOCOL

COMMUNICATIONS B.1.1 INTRODUCTION................................................................................................B-1
B.1.2 PHYSICAL LAYER.............................................................................................B-1
B.1.3 DATA LINK LAYER............................................................................................B-1
B.1.4 CRC-16 ALGORITHM........................................................................................B-2
B.2 MODBUS FUNCTION CODES
B.2.1 SUPPORTED FUNCTION CODES ...................................................................B-3
B.2.2 READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H) ...........B-3
B.2.3 EXECUTE OPERATION (FUNCTION CODE 05H) ...........................................B-4
B.2.4 STORE SINGLE SETTING (FUNCTION CODE 06H) .......................................B-4
B.2.5 STORE MULTIPLE SETTINGS (FUNCTION CODE 10H) ................................B-5
B.2.6 EXCEPTION RESPONSES ...............................................................................B-5
B.3 FILE TRANSFERS
B.3.1 OBTAINING RELAY FILES VIA MODBUS ........................................................B-6
B.3.2 MODBUS PASSWORD OPERATION ...............................................................B-7
B.4 MEMORY MAPPING
B.4.1 MODBUS MEMORY MAP .................................................................................B-8
B.4.2 DATA FORMATS .............................................................................................B-45

C. IEC 61850 C.1 INTRODUCTION

COMMUNICATIONS C.1.1 OVERVIEW........................................................................................................C-1
C.1.2 COMMUNICATION PROFILES .........................................................................C-1
C.1.3 MMS PROTOCOL..............................................................................................C-1
C.1.4 PEER-TO-PEER COMMUNICATION ................................................................C-1
C.1.5 FILE SERVICES ................................................................................................C-1
C.1.6 COMMUNICATION SOFTWARE UTILITIES .....................................................C-2
C.1.7 NON-IEC 61850 DATA ......................................................................................C-2
C.1.8 TCP CONNECTION TIMING .............................................................................C-2
C.1.9 LOGICAL NODE MMXU DATA MAPPING ........................................................C-2
C.1.10 LOGICAL NODE GGIO DATA MAPPING..........................................................C-2
C.1.11 OTHER LOGICAL NODE MAPPING .................................................................C-2
C.2 ACSI CONFORMANCE
C.2.1 ACSI BASIC CONFORMANCE STATEMENT...................................................C-3
C.2.2 ACSI MODELS CONFORMANCE STATEMENT ..............................................C-3
C.2.3 ACSI SERVICES CONFORMANCE STATEMENT ...........................................C-4
C.3 LOGICAL NODES
C.3.1 LOGICAL NODES TABLE .................................................................................C-7

D. IEC 60870-5-104 D.1 IEC 60870-5-104

COMMUNICATIONS D.1.1 INTEROPERABILITY DOCUMENT ...................................................................D-1
D.1.2 IEC 60870-5-104 POINTS .................................................................................D-9

E. DNP COMMUNICATIONS E.1 DEVICE PROFILE DOCUMENT

E.1.1 DNP V3.00 DEVICE PROFILE ..........................................................................E-1
E.1.2 IMPLEMENTATION TABLE ...............................................................................E-4

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 TABLE OF CONTENTS

E.2 DNP POINT LISTS

E.2.1 BINARY INPUT POINTS ................................................................................... E-8
E.2.2 BINARY AND CONTROL RELAY OUTPUT...................................................... E-9
E.2.3 COUNTERS..................................................................................................... E-10
E.2.4 ANALOG INPUTS............................................................................................ E-11

F. MISCELLANEOUS F.1 CHANGE NOTES

F.1.1 REVISION HISTORY......................................................................................... F-1
F.1.2 CHANGES TO THE B30 MANUAL ................................................................... F-1
F.2 ABBREVIATIONS
F.2.1 STANDARD ABBREVIATIONS ......................................................................... F-4
F.3 WARRANTY
F.3.1 GE MULTILIN WARRANTY............................................................................... F-6

INDEX

x B30 Bus Differential Relay GE Multilin

 1 GETTING STARTED 1.1 IMPORTANT PROCEDURES

1 GETTING STARTED 1.1IMPORTANT PROCEDURES

Please read this chapter to help guide you through the initial setup of your new relay. 1
1.1.1 CAUTIONS AND WARNINGS

Before attempting to install or use the relay, it is imperative that all WARNINGS and CAU-
TIONS in this manual are reviewed to help prevent personal injury, equipment damage, and/
or downtime.
WARNING CAUTION

1.1.2 INSPECTION CHECKLIST

• Open the relay packaging and inspect the unit for physical damage.
• View the rear nameplate and verify that the correct model has been ordered.

B30 RATINGS: Model: B30H00HCHF8HH6HM8HP6AU8HW6H

Bus Differential Relay 000

Mods:
Control Power: 88-300V DC @ 35W / 77-265V AC @ 35VA Wiring Diagram: 836773
Contact Inputs: 300V DC Max 10mA Inst. Manual: D
Contact Outputs: Standard Pilot Duty / 250V AC 7.5A Serial Number: MAZB98000029
360V A Resistive / 125V DC Break Firmware: D
GE Multilin 4A @ L/R = 40mS / 300W Mfg. Date: 1998/01/05

Technical Support:
Made in
Tel: (905) 294-6222 http://www.GEindustrial.com/multilin ®
®
Canada
Fax: (905) 201-2098 - M A A B 9 7 0 0 0 0 9 9 -

Figure 1–1: REAR NAMEPLATE (EXAMPLE)

• Ensure that the following items are included:
• Instruction Manual
• GE enerVista CD (includes the EnerVista UR Setup software and manuals in PDF format)
• mounting screws
• registration card (attached as the last page of the manual)
• Fill out the registration form and return to GE Multilin (include the serial number located on the rear nameplate).
• For product information, instruction manual updates, and the latest software updates, please visit the GE Multilin web-
site at http://www.GEindustrial.com/multilin.
If there is any noticeable physical damage, or any of the contents listed are missing, please contact GE
Multilin immediately.
NOTE

GE MULTILIN CONTACT INFORMATION AND CALL CENTER FOR PRODUCT SUPPORT:

GE Multilin
215 Anderson Avenue
Markham, Ontario
Canada L6E 1B3
TELEPHONE: (905) 294-6222, 1-800-547-8629 (North America only)
FAX: (905) 201-2098
E-MAIL: gemultilin@indsys.ge.com
HOME PAGE: http://www.GEindustrial.com/multilin

GE Multilin B30 Bus Differential Relay 1-1

 1.2 UR OVERVIEW 1 GETTING STARTED

1.2UR OVERVIEW 1.2.1 INTRODUCTION TO THE UR

1 Historically, substation protection, control, and metering functions were performed with electromechanical equipment. This
first generation of equipment was gradually replaced by analog electronic equipment, most of which emulated the single-
function approach of their electromechanical precursors. Both of these technologies required expensive cabling and auxil-
iary equipment to produce functioning systems.
Recently, digital electronic equipment has begun to provide protection, control, and metering functions. Initially, this equip-
ment was either single function or had very limited multi-function capability, and did not significantly reduce the cabling and
auxiliary equipment required. However, recent digital relays have become quite multi-functional, reducing cabling and aux-
iliaries significantly. These devices also transfer data to central control facilities and Human Machine Interfaces using elec-
tronic communications. The functions performed by these products have become so broad that many users now prefer the
term IED (Intelligent Electronic Device).
It is obvious to station designers that the amount of cabling and auxiliary equipment installed in stations can be even further
reduced, to 20% to 70% of the levels common in 1990, to achieve large cost reductions. This requires placing even more
functions within the IEDs.
Users of power equipment are also interested in reducing cost by improving power quality and personnel productivity, and
as always, in increasing system reliability and efficiency. These objectives are realized through software which is used to
perform functions at both the station and supervisory levels. The use of these systems is growing rapidly.
High speed communications are required to meet the data transfer rates required by modern automatic control and moni-
toring systems. In the near future, very high speed communications will be required to perform protection signaling with a
performance target response time for a command signal between two IEDs, from transmission to reception, of less than 3
milliseconds. This has been established by the IEC 61850 standard.
IEDs with the capabilities outlined above will also provide significantly more power system data than is presently available,
enhance operations and maintenance, and permit the use of adaptive system configuration for protection and control sys-
tems. This new generation of equipment must also be easily incorporated into automation systems, at both the station and
enterprise levels. The GE Multilin Universal Relay (UR) has been developed to meet these goals.

1-2 B30 Bus Differential Relay GE Multilin

 1 GETTING STARTED 1.2 UR OVERVIEW

1.2.2 HARDWARE ARCHITECTURE

a) UR BASIC DESIGN 1
The UR is a digital-based device containing a central processing unit (CPU) that handles multiple types of input and output
signals. The UR can communicate over a local area network (LAN) with an operator interface, a programming device, or
another UR device.

Input Elements CPU Module Output Elements

Contact Inputs Protective Elements Contact Outputs
Virtual Inputs Pickup Virtual Outputs
Dropout
Input Output
Analog Inputs Operate Analog Outputs
CT Inputs Status Status Remote Outputs
VT Inputs Table Logic Gates Table -DNA
-USER
Remote Inputs
Direct Inputs Direct Outputs

LAN

Programming Operator
Device Interface
827822A2.CDR

Figure 1–2: UR CONCEPT BLOCK DIAGRAM

The CPU module contains firmware that provides protection elements in the form of logic algorithms, as well as program-
mable logic gates, timers, and latches for control features.
Input elements accept a variety of analog or digital signals from the field. The UR isolates and converts these signals into
logic signals used by the relay.
Output elements convert and isolate the logic signals generated by the relay into digital or analog signals that can be used
to control field devices.

b) UR SIGNAL TYPES
The contact inputs and outputs are digital signals associated with connections to hard-wired contacts. Both ‘wet’ and ‘dry’
contacts are supported.
The virtual inputs and outputs are digital signals associated with UR-series internal logic signals. Virtual inputs include
signals generated by the local user interface. The virtual outputs are outputs of FlexLogic™ equations used to customize
the device. Virtual outputs can also serve as virtual inputs to FlexLogic™ equations.
The analog inputs and outputs are signals that are associated with transducers, such as Resistance Temperature Detec-
tors (RTDs).
The CT and VT inputs refer to analog current transformer and voltage transformer signals used to monitor AC power lines.
The UR-series relays support 1 A and 5 A CTs.
The remote inputs and outputs provide a means of sharing digital point state information between remote UR-series
devices. The remote outputs interface to the remote inputs of other UR-series devices. Remote outputs are FlexLogic™
operands inserted into IEC 61850 GSSE and GOOSE messages.
The direct inputs and outputs provide a means of sharing digital point states between a number of UR-series IEDs over a
dedicated fiber (single or multimode), RS422, or G.703 interface. No switching equipment is required as the IEDs are con-
nected directly in a ring or redundant (dual) ring configuration. This feature is optimized for speed and intended for pilot-
aided schemes, distributed logic applications, or the extension of the input/output capabilities of a single relay chassis.

GE Multilin B30 Bus Differential Relay 1-3

 1.2 UR OVERVIEW 1 GETTING STARTED

c) UR SCAN OPERATION

1 The UR-series devices operate in a cyclic scan fashion. The device reads the inputs into an input status table, solves the
logic program (FlexLogic™ equation), and then sets each output to the appropriate state in an output status table. Any
resulting task execution is priority interrupt-driven.

Read Inputs
Protection elements
serviced by sub-scan

Protective Elements
PKP
Solve Logic DPO
OP

Set Outputs

827823A1.CDR

Figure 1–3: UR-SERIES SCAN OPERATION

1.2.3 UR SOFTWARE ARCHITECTURE

The firmware (software embedded in the relay) is designed in functional modules which can be installed in any relay as
required. This is achieved with Object-Oriented Design and Programming (OOD/OOP) techniques.
Object-Oriented techniques involve the use of ‘objects’ and ‘classes’. An ‘object’ is defined as “a logical entity that contains
both data and code that manipulates that data”. A ‘class’ is the generalized form of similar objects. By using this concept,
one can create a Protection Class with the Protection Elements as objects of the class such as Time Overcurrent, Instanta-
neous Overcurrent, Current Differential, Undervoltage, Overvoltage, Underfrequency, and Distance. These objects repre-
sent completely self-contained software modules. The same object-class concept can be used for Metering, Input/Output
Control, HMI, Communications, or any functional entity in the system.
Employing OOD/OOP in the software architecture of the Universal Relay achieves the same features as the hardware
architecture: modularity, scalability, and flexibility. The application software for any Universal Relay (e.g. Feeder Protection,
Transformer Protection, Distance Protection) is constructed by combining objects from the various functionality classes.
This results in a ’common look and feel’ across the entire family of UR-series platform-based applications.

1.2.4 IMPORTANT UR CONCEPTS

As described above, the architecture of the UR-series relays differ from previous devices. To achieve a general understand-
ing of this device, some sections of Chapter 5 are quite helpful. The most important functions of the relay are contained in
“elements”. A description of the UR-series elements can be found in the Introduction to Elements section in Chapter 5. An
example of a simple element, and some of the organization of this manual, can be found in the Digital Elements section. An
explanation of the use of inputs from CTs and VTs is in the Introduction to AC Sources section in Chapter 5. A description of
how digital signals are used and routed within the relay is contained in the Introduction to FlexLogic™ section in Chapter 5.

1-4 B30 Bus Differential Relay GE Multilin

 1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE

1.3ENERVISTA UR SETUP SOFTWARE 1.3.1 REQUIREMENTS

The faceplate keypad and display or the EnerVista UR Setup software interface can be used to communicate with the relay.
1
The EnerVista UR Setup software interface is the preferred method to edit settings and view actual values because the PC
monitor can display more information in a simple comprehensible format.
The following minimum requirements must be met for the EnerVista UR Setup software to properly operate on a PC.
• Pentium class or higher processor (Pentium II 300 MHz or higher recommended)
• Windows 95, 98, 98SE, ME, NT 4.0 (Service Pack 4 or higher), 2000, XP
• Internet Explorer 4.0 or higher
• 128 MB of RAM (256 MB recommended)
• 200 MB of available space on system drive and 200 MB of available space on installation drive
• Video capable of displaying 800 x 600 or higher in high-color mode (16-bit color)
• RS232 and/or Ethernet port for communications to the relay
The following qualified modems have been tested to be compliant with the B30 and the EnerVista UR Setup software.
• US Robotics external 56K FaxModem 5686
• US Robotics external Sportster 56K X2
• PCTEL 2304WT V.92 MDC internal modem

1.3.2 SOFTWARE INSTALLATION

After ensuring the minimum requirements for using EnerVista UR Setup are met (see previous section), use the following
procedure to install the EnerVista UR Setup from the enclosed GE enerVista CD.
1. Insert the GE enerVista CD into your CD-ROM drive.
2. Click the Install Now button and follow the installation instructions to install the no-charge enerVista software.
3. When installation is complete, start the enerVista Launchpad application.
4. Click the IED Setup section of the Launch Pad window.

GE Multilin B30 Bus Differential Relay 1-5

 1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED

5. In the enerVista Launch Pad window, click the Install Software button and select the “B30 Bus Differential Relay” from

1 the Install Software window as shown below. Select the “Web” option to ensure the most recent software release, or
select “CD” if you do not have a web connection, then click the Check Now button to list software items for the B30.

6. Select the B30 software program and release notes (if desired) from the list and click the Download Now button to
obtain the installation program.

7. enerVista Launchpad will obtain the installation program from the Web or CD. Once the download is complete, double-
click the installation program to install the EnerVista UR Setup software.
8. Select the complete path, including the new directory name, where the EnerVista UR Setup will be installed.
9. Click on Next to begin the installation. The files will be installed in the directory indicated and the installation program
will automatically create icons and add EnerVista UR Setup to the Windows start menu.

1-6 B30 Bus Differential Relay GE Multilin

 1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE

10. Click Finish to end the installation. The B30 device will be added to the list of installed IEDs in the enerVista Launch-
pad window, as shown below.
1

1.3.3 CONNECTING THE ENERVISTA UR SETUP SOFTWARE WITH THE B30

This section is intended as a quick start guide to using the EnerVista UR Setup software. Please refer to the EnerVista UR
Setup Help File and Chapter 4 of this manual for more information.

a) CONFIGURING AN ETHERNET CONNECTION

Before starting, verify that the Ethernet network cable is properly connected to the Ethernet port on the back of the relay. To
setup the relay for Ethernet communications, it will be necessary to define a Site, then add the relay as a Device at that site.
1. Install and start the latest version of the EnerVista UR Setup software (available from the GE enerVista CD or online
from http://www.GEindustrial.com/multilin (see previous section for installation instructions).
2. Select the “UR” device from the enerVista Launchpad to start EnerVista UR Setup.
3. Click the Device Setup button to open the Device Setup window, then click the Add Site button to define a new site.
4. Enter the desired site name in the “Site Name” field. If desired, a short description of site can also be entered along
with the display order of devices defined for the site. Click the OK button when complete.
5. The new site will appear in the upper-left list in the EnerVista UR Setup window. Click on the new site name and then
click the Device Setup button to re-open the Device Setup window.
6. Click the Add Device button to define the new device.
7. Enter the desired name in the “Device Name” field and a description (optional) of the site.
8. Select “Ethernet” from the Interface drop-down list. This will display a number of interface parameters that must be
entered for proper Ethernet functionality.
• Enter the relay IP address (from SETTINGS PRODUCT SETUP COMMUNICATIONS NETWORK IP ADDRESS)
in the “IP Address” field.
• Enter the relay Modbus address (from the PRODUCT SETUP COMMUNICATIONS MODBUS PROTOCOL MOD-
BUS SLAVE ADDRESS setting) in the “Slave Address” field.

• Enter the Modbus port address (from the PRODUCT SETUP COMMUNICATIONS MODBUS PROTOCOL
MODBUS TCP PORT NUMBER setting) in the “Modbus Port” field.

9. Click the Read Order Code button to connect to the B30 device and upload the order code. If an communications
error occurs, ensure that the three EnerVista UR Setup values entered in the previous step correspond to the relay set-
ting values.

GE Multilin B30 Bus Differential Relay 1-7

 1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED

10. Click OK when the relay order code has been received. The new device will be added to the Site List window (or

1 Online window) located in the top left corner of the main EnerVista UR Setup window.
The Site Device has now been configured for Ethernet communications. Proceed to Section c) below to begin communica-
tions.

b) CONFIGURING AN RS232 CONNECTION

Before starting, verify that the RS232 serial cable is properly connected to the RS232 port on the front panel of the relay.
1. Install and start the latest version of the EnerVista UR Setup software (available from the GE enerVista CD or online
from http://www.GEindustrial.com/multilin.
2. Select the Device Setup button to open the Device Setup window and click the Add Site button to define a new site.
3. Enter the desired site name in the “Site Name” field. If desired, a short description of site can also be entered along
with the display order of devices defined for the site. Click the OK button when complete.
4. The new site will appear in the upper-left list in the EnerVista UR Setup window. Click on the new site name and then
click the Device Setup button to re-open the Device Setup window.
5. Click the Add Device button to define the new device.
6. Enter the desired name in the “Device Name” field and a description (optional) of the site.
7. Select “Serial” from the Interface drop-down list. This will display a number of interface parameters that must be
entered for proper serial communications.
• Enter the relay slave address and COM port values (from the SETTINGS PRODUCT SETUP COMMUNICATIONS
SERIAL PORTS menu) in the “Slave Address” and “COM Port” fields.

• Enter the physical communications parameters (baud rate and parity settings) in their respective fields.
8. Click the Read Order Code button to connect to the B30 device and upload the order code. If an communications
error occurs, ensure that the EnerVista UR Setup serial communications values entered in the previous step corre-
spond to the relay setting values.
9. Click “OK” when the relay order code has been received. The new device will be added to the Site List window (or
Online window) located in the top left corner of the main EnerVista UR Setup window.
The Site Device has now been configured for RS232 communications. Proceed to Section c) Connecting to the Relay
below to begin communications.

c) CONNECTING TO THE RELAY

1. Open the Display Properties window through the Site List tree as shown below:

1-8 B30 Bus Differential Relay GE Multilin

 1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE

Expand the Site List by double-clicking

or by selecting the [+] box

Communications Status Indicator

Green LED = OK, Red LED = No Communications
UR icon = report open

842743A1.CDR

2. The Display Properties window will open with a status indicator on the lower left of the EnerVista UR Setup window.
3. If the status indicator is red, verify that the Ethernet network cable is properly connected to the Ethernet port on the
back of the relay and that the relay has been properly setup for communications (steps A and B earlier).
If a relay icon appears in place of the status indicator, than a report (such as an oscillography or event record) is open.
Close the report to re-display the green status indicator.
4. The Display Properties settings can now be edited, printed, or changed according to user specifications.
Refer to Chapter 4 in this manual and the EnerVista UR Setup Help File for more information about the
using the EnerVista UR Setup software interface.
NOTE

GE Multilin B30 Bus Differential Relay 1-9

 1.4 UR HARDWARE 1 GETTING STARTED

1.4UR HARDWARE 1.4.1 MOUNTING AND WIRING

1 Please refer to Chapter 3: Hardware for detailed mounting and wiring instructions. Review all WARNINGS and CAUTIONS
carefully.

1.4.2 COMMUNICATIONS

The EnerVista UR Setup software communicates to the relay via the faceplate RS232 port or the rear panel RS485 / Ether-
net ports. To communicate via the faceplate RS232 port, a standard “straight-through” serial cable is used. The DB-9 male
end is connected to the relay and the DB-9 or DB-25 female end is connected to the PC COM1 or COM2 port as described
in the CPU Communications Ports section of Chapter 3.

Figure 1–4: RELAY COMMUNICATIONS OPTIONS

To communicate through the B30 rear RS485 port from a PC RS232 port, the GE Multilin RS232/RS485 converter box is
required. This device (catalog number F485) connects to the computer using a “straight-through” serial cable. A shielded
twisted-pair (20, 22, or 24 AWG) connects the F485 converter to the B30 rear communications port. The converter termi-
nals (+, –, GND) are connected to the B30 communication module (+, –, COM) terminals. Refer to the CPU Communica-
tions Ports section in Chapter 3 for option details. The line should be terminated with an R-C network (i.e. 120 Ω, 1 nF) as
described in the Chapter 3.

1.4.3 FACEPLATE DISPLAY

All messages are displayed on a 2 × 20 character vacuum fluorescent display to make them visible under poor lighting con-
ditions. An optional liquid crystal display (LCD) is also available. Messages are displayed in English and do not require the
aid of an instruction manual for deciphering. While the keypad and display are not actively being used, the display will
default to defined messages. Any high priority event driven message will automatically override the default message and
appear on the display.

1-10 B30 Bus Differential Relay GE Multilin

 1 GETTING STARTED 1.5 USING THE RELAY

1.5USING THE RELAY 1.5.1 FACEPLATE KEYPAD

Display messages are organized into ‘pages’ under the following headings: Actual Values, Settings, Commands, and Tar-
1
gets. The key navigates through these pages. Each heading page is broken down further into logical subgroups.
The MESSAGE keys navigate through the subgroups. The VALUE keys scroll increment or decrement
numerical setting values when in programming mode. These keys also scroll through alphanumeric values in the text edit
mode. Alternatively, values may also be entered with the numeric keypad.
The key initiates and advance to the next character in text edit mode or enters a decimal point. The key may be
pressed at any time for context sensitive help messages. The key stores altered setting values.

1.5.2 MENU NAVIGATION

Press the key to select the desired header display page (top-level menu). The header title appears momentarily fol-
lowed by a header display page menu item. Each press of the key advances through the main heading pages as
illustrated below.

ACTUAL VALUES SETTINGS COMMANDS TARGETS

ACTUAL VALUES SETTINGS COMMANDS No Active

STATUS PRODUCT SETUP VIRTUAL INPUTS Targets

USER DISPLAYS
(when in use)

User Display 1

1.5.3 MENU HIERARCHY

The setting and actual value messages are arranged hierarchically. The header display pages are indicated by double
scroll bar characters ( ), while sub-header pages are indicated by single scroll bar characters ( ). The header display
pages represent the highest level of the hierarchy and the sub-header display pages fall below this level. The MESSAGE
and keys move within a group of headers, sub-headers, setting values, or actual values. Continually pressing the
MESSAGE key from a header display displays specific information for the header category. Conversely, continually
pressing the MESSAGE key from a setting value or actual value display returns to the header display.

HIGHEST LEVEL LOWEST LEVEL (SETTING VALUE)

SETTINGS PASSWORD ACCESS LEVEL:

PRODUCT SETUP SECURITY Restricted

SETTINGS
SYSTEM SETUP

GE Multilin B30 Bus Differential Relay 1-11

 1.5 USING THE RELAY 1 GETTING STARTED

1.5.4 RELAY ACTIVATION

1 The relay is defaulted to the “Not Programmed” state when it leaves the factory. This safeguards against the installation of
a relay whose settings have not been entered. When powered up successfully, the Trouble LED will be on and the In Ser-
vice LED off. The relay in the “Not Programmed” state will block signaling of any output relay. These conditions will remain
until the relay is explicitly put in the “Programmed” state.
Select the menu message SETTINGS PRODUCT SETUP INSTALLATION RELAY SETTINGS

RELAY SETTINGS:
Not Programmed

To put the relay in the “Programmed” state, press either of the VALUE keys once and then press . The face-
plate Trouble LED will turn off and the In Service LED will turn on. The settings for the relay can be programmed manually
(refer to Chapter 5) via the faceplate keypad or remotely (refer to the EnerVista UR Setup Help file) via the EnerVista UR
Setup software interface.

1.5.5 RELAY PASSWORDS

It is recommended that passwords be set up for each security level and assigned to specific personnel. There are two user
password security access levels, COMMAND and SETTING:
1. COMMAND
The COMMAND access level restricts the user from making any settings changes, but allows the user to perform the fol-
lowing operations:
• change state of virtual inputs
• clear event records
• clear oscillography records
• operate user-programmable pushbuttons
2. SETTING
The SETTING access level allows the user to make any changes to any of the setting values.
Refer to the Changing Settings section in Chapter 4 for complete instructions on setting up security level
passwords.
NOTE

1.5.6 FLEXLOGIC™ CUSTOMIZATION

FlexLogic™ equation editing is required for setting up user-defined logic for customizing the relay operations. See the Flex-
Logic™ section in Chapter 5 for additional details.

1-12 B30 Bus Differential Relay GE Multilin

 1 GETTING STARTED 1.5 USING THE RELAY

1.5.7 COMMISSIONING

Templated tables for charting all the required settings before entering them via the keypad are available from the GE Multi-
1
lin website at http://www.GEindustrial.com/multilin.
The B30 requires a minimum amount of maintenance when it is commissioned into service. The B30 is a microprocessor-
based relay and its characteristics do not change over time. As such no further functional tests are required.
Furthermore the B30 performs a number of ongoing self-tests and takes the necessary action in case of any major errors
(see the Relay Self-Test section in Chapter 7 for details). However, it is recommended that maintenance on the B30 be
scheduled with other system maintenance. This maintenance may involve the following.
In-service maintenance:
1. Visual verification of the analog values integrity such as voltage and current (in comparison to other devices on the cor-
responding system).
2. Visual verification of active alarms, relay display messages, and LED indications.
3. LED test.
4. Visual inspection for any damage, corrosion, dust, or loose wires.
5. Event recorder file download with further events analysis.
Out-of-service maintenance:
1. Check wiring connections for firmness.
2. Analog values (currents, voltages, RTDs, analog inputs) injection test and metering accuracy verification. Calibrated
test equipment is required.
3. Protection elements setpoints verification (analog values injection or visual verification of setting file entries against
relay settings schedule).
4. Contact inputs and outputs verification. This test can be conducted by direct change of state forcing or as part of the
system functional testing.
5. Visual inspection for any damage, corrosion, or dust.
6. Event recorder file download with further events analysis.
7. LED Test and pushbutton continuity check.
Unscheduled maintenance such as during a disturbance causing system interruption:
1. View the event recorder and oscillography or fault report for correct operation of inputs, outputs, and elements.
If it is concluded that the relay or one of its modules is of concern, contact GE Multilin or one of its representatives for
prompt service.

GE Multilin B30 Bus Differential Relay 1-13

 1.5 USING THE RELAY 1 GETTING STARTED

1-14 B30 Bus Differential Relay GE Multilin

 2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

2 PRODUCT DESCRIPTION 2.1INTRODUCTION 2.1.1 OVERVIEW

The B30 Bus Differential Relay is a microprocessor based relay that provides protection and metering for a busbar with up
to 6 feeders. Protection is provided by a low impedance percent differential element with features that make it immune to
CT saturation. Both biased (restrained) and unbiased (unrestrained) differential protection functions are provided.
A dynamic busbar replica mechanism is provided by associating the breaker/switch status signals with the differential zone
currents.
The biased bus differential function operates using both the differential and current directional comparison protection princi-
2
ples. The differential element uses a dual-slope dual-breakpoint characteristic with the restraining current formed as a max-
imum of the input currents for better stability during through-fault conditions and faster operation on internal faults. The
current directional comparison principle checks the angular relationship between the currents.
The biased bus differential protection operates in the 2-out-of-2 mode for low differential currents. This improves stability
during CT saturation conditions caused by comparatively low currents combined with unfavorable phenomena such as mul-
tiple auto-reclose actions. For high differential currents, the bus differential element operates using the differential charac-
teristic alone if CT saturation is not detected. Upon CT saturation detection, the relay switches to the 2-out-of-2 operating
mode for better through fault stability.
The B30 typical operating time is about 12 ms for Fast Form-C output contacts and internal usage by user-programmable
logic, and about 15 ms for trip-rated Form-A output contacts.
A CT failure alarm function that monitors the level of the differential current is provided. A situation when the differential cur-
rent stays above a pre-defined level for a pre-defined period of time is declared as a CT trouble event, and an alarm is
raised. To prevent false tripping due to CT trouble, undervoltage supervision or an external check zone can be used.
Voltage and current metering is built into the relay as a standard feature. Current parameters are available as total wave-
form RMS magnitude, or as fundamental frequency only RMS magnitude and angle (phasor).
Diagnostic features include a sequence of records capable of storing 1024 time-tagged events. The internal clock used for
time-tagging can be synchronized with an IRIG-B signal or via the SNTP protocol over the Ethernet port. This precise time
stamping allows the sequence of events to be determined throughout the system. Events can also be programmed (via
FlexLogic™ equations) to trigger oscillography data capture which may be set to record the measured parameters before
and after the event for viewing on a personal computer (PC). These tools significantly reduce troubleshooting time and sim-
plify report generation in the event of a system fault.
A faceplate RS232 port may be used to connect to a PC for the programming of settings and the monitoring of actual val-
ues. A variety of communications modules are available. Two rear RS485 ports allow independent access by operating and
engineering staff. All serial ports use the Modbus® RTU protocol. The RS485 ports may be connected to system computers
with baud rates up to 115.2 kbps. The RS232 port has a fixed baud rate of 19.2 kbps. Optional communications modules
include a 10BaseF Ethernet interface which can be used to provide fast, reliable communications in noisy environments.
Another option provides two 10BaseF fiber optic ports for redundancy. The Ethernet port supports IEC 61850, Modbus®/
TCP, and TFTP protocols, and allows access to the relay via any standard web browser (B30 web pages). The IEC 60870-
5-104 protocol is supported on the Ethernet port. DNP 3.0 and IEC 60870-5-104 cannot be enabled at the same time.
The B30 IEDs use flash memory technology which allows field upgrading as new features are added. The following Single
Line Diagram illustrates the relay functionality using ANSI (American National Standards Institute) device numbers.

Table 2–1: ANSI DEVICE NUMBERS AND FUNCTIONS

DEVICE FUNCTION DEVICE FUNCTION
NUMBER NUMBER
27P Phase Undervoltage 51G Ground Time Overcurrent
50BF Breaker Failure 51N Neutral Time Overcurrent
50G Ground Instantaneous Overcurrent 51P Phase Time Overcurrent
50N Neutral Instantaneous Overcurrent 59N Neutral Overvoltage
50P Phase Instantaneous Overcurrent 59X Auxiliary Overvoltage
50/74 CT Trouble 87B Restrained Bus Differential
50/87 Unrestrained Bus Differential

GE Multilin B30 Bus Differential Relay 2-1

 2.1 INTRODUCTION 2 PRODUCT DESCRIPTION

VT input

2
(optional)

M
51P 51P 51P 51P 51P 51P e
t
e
50N 50N 50N 50N 50N 50N r
i
51N 51N 51N 51N 51N 51N n
g

50G 50G 50G 50G 50G 50G

51G 51G 51G 51G 51G 51G

50BF 50BF 50BF 50BF 50BF 50BF

Restraint Current F TM
l
e
Current Directional Comparison x
E
l
CT Saturation Detection e
m
CT Trouble (50/74) e
n
t
s
87B

50/87

50P 50N 50G 51G 59N 59X 27P

B30 Bus Differential Relay
836719AC.CDR

Figure 2–1: SINGLE LINE DIAGRAM

Table 2–2: OTHER DEVICE FUNCTIONS

FUNCTION FUNCTION FUNCTION
Contact Inputs (up to 96) FlexLogic™ Equations Time Synchronization over SNTP
Contact Outputs (up to 64) IEC 61850 Communications (optional) Transducer Inputs/Outputs
Control Pushbuttons Metering: Current, Voltage, Frequency User Definable Displays
Digital Counters (8) Modbus Communications User Programmable Fault Reports
Digital Elements (48) Modbus User Map User Programmable LEDs
Direct Inputs/Outputs (32) Non-Volatile Latches User Programmable Pushbuttons
DNP 3.0 or IEC 60870-5-104 Protocol Non-Volatile Selector Switch User Programmable Self-Tests
Ethernet Global Data Protocol (optional) Oscillography Virtual Inputs (64)
Event Recorder Selector Switch Virtual Outputs (96)
FlexElements™ (8) Setting Groups (6)

2.1.2 ORDERING

The relay is available as a 19-inch rack horizontal mount unit and consists of the following modules: power supply, CPU,
CT/VT, digital input/output, transducer input/output. Each of these modules can be supplied in a number of configurations
specified at the time of ordering. The information required to completely specify the relay is provided in the following tables
(see Chapter 3 for full details of relay modules).

2-2 B30 Bus Differential Relay GE Multilin

 2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

Table 2–3: B30 ORDER CODES (HORIZONTAL UNITS)

B30 - * ** - * * * - F ** - H ** - L ** - N ** - S ** - U ** - W/X ** Full Size Horizontal Mount
BASE UNIT B30 | | | | | | | | | | | | Base Unit
CPU E | | | | | | | | | | | RS485 and RS485
G | | | | | | | | | | | RS485 and multi-mode ST 10Base-F
H | | | | | | | | | | | RS485 and multi-mode ST redundant 10Base-F
J | | | | | | | | | | | RS485 and multi-mode ST 100Base-FX
K | | | | | | | | | | | RS485 and multi-mode ST redundant 100Base-FX
L | | | | | | | | | | | RS485 and single mode SC 100Base-FX
M | | | | | | | | | | | RS485 and single mode SC redundant 100Base-FX
N
P
R
|
|
|
| | |
| | |
| | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| RS485 and 10/100Base-T
| RS485 and single mode ST 100Base-FX
| RS485 and single mode ST redundant 100Base-FX
2
SOFTWARE 00 | | | | | | | | | | No Software Options
01 | | | | | | | | | | Ethernet Global Data (EGD); not available for Type E CPUs
03 | | | | | | | | | | IEC 61850; not available for Type E CPUs
04 | | | | | | | | | | Ethernet Global Data (EGD) and IEC 61850; not available for Type E CPUs
MOUNT/COATING H | | | | | | | | | Horizontal (19” rack)
A | | | | | | | | | Horizontal (19” rack) with harsh environmental coating
FACEPLATE/ DISPLAY C | | | | | | | | English display
P | | | | | | | | English display with 4 small and 12 large programmable pushbuttons
A | | | | | | | | Chinese display
B | | | | | | | | Chinese display with 4 small and 12 large programmable pushbuttons
D | | | | | | | | French display
G | | | | | | | | French display with 4 small and 12 large programmable pushbuttons
R | | | | | | | | Russian display
S | | | | | | | | Russian display with 4 small and 12 large programmable pushbuttons
POWER SUPPLY H | | | | | | | 125 / 250 V AC/DC power supply
(redundant supply must H | | | | | | RH 125 / 250 V AC/DC with redundant 125 / 250 V AC/DC power supply
be same type as main supply) L | | | | | | | 24 to 48 V (DC only) power supply
L | | | | | | RL 24 to 48 V (DC only) with redundant 24 to 48 V DC power supply
CT/VT MODULES 8F | 8F | 8F | | Standard 4CT/4VT
8G | 8G | 8G | | Sensitive Ground 4CT/4VT
8H | 8H | 8H | | Standard 8CT
8J | 8J | 8J | | Sensitive Ground 8CT
DIGITAL INPUTS/OUTPUTS XX XX XX XX XX XX No Module
4A 4A 4A 4A 4A | 4 Solid-State (no monitoring) MOSFET outputs
4B 4B 4B 4B 4B | 4 Solid-State (voltage with optional current) MOSFET outputs
4C 4C 4C 4C 4C | 4 Solid-State (current with optional voltage) MOSFET outputs
4D 4D 4D 4D 4D | 16 digital inputs with Auto-Burnishing
4L 4L 4L 4L 4L | 14 Form-A (no monitoring) Latching outputs
67 67 67 67 67 | 8 Form-A (no monitoring) outputs
6A 6A 6A 6A 6A | 2 Form-A (voltage with optional current) and 2 Form-C outputs, 8 digital inputs
6B 6B 6B 6B 6B | 2 Form-A (voltage with optional current) and 4 Form-C outputs, 4 digital inputs
6C 6C 6C 6C 6C | 8 Form-C outputs
6D 6D 6D 6D 6D | 16 digital inputs
6E 6E 6E 6E 6E | 4 Form-C outputs, 8 digital inputs
6F 6F 6F 6F 6F | 8 Fast Form-C outputs
6G 6G 6G 6G 6G | 4 Form-A (voltage with optional current) outputs, 8 digital inputs
6H 6H 6H 6H 6H | 6 Form-A (voltage with optional current) outputs, 4 digital inputs
6K 6K 6K 6K 6K | 4 Form-C and 4 Fast Form-C outputs
6L 6L 6L 6L 6L | 2 Form-A (current with optional voltage) and 2 Form-C outputs, 8 digital inputs
6M 6M 6M 6M 6M | 2 Form-A (current with optional voltage) and 4 Form-C outputs, 4 digital inputs
6N 6N 6N 6N 6N | 4 Form-A (current with optional voltage) outputs, 8 digital inputs
6P 6P 6P 6P 6P | 6 Form-A (current with optional voltage) outputs, 4 digital inputs
6R 6R 6R 6R 6R | 2 Form-A (no monitoring) and 2 Form-C outputs, 8 digital inputs
6S 6S 6S 6S 6S | 2 Form-A (no monitoring) and 4 Form-C outputs, 4 digital inputs
6T 6T 6T 6T 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs
6U 6U 6U 6U 6U | 6 Form-A (no monitoring) outputs, 4 digital inputs
TRANSDUCER 5A 5A 5A 5A 5A | 4 dcmA inputs, 4 dcmA outputs (only one 5A module is allowed)
INPUTS/OUTPUTS 5C 5C 5C 5C 5C | 8 RTD inputs
(select a maximum of 3 per unit) 5D 5D 5D 5D 5D | 4 RTD inputs, 4 dcmA outputs (only one 5D module is allowed)
5E 5E 5E 5E 5E | 4 RTD inputs, 4 dcmA inputs
5F 5F 5F 5F 5F | 8 dcmA inputs
INTER-RELAY 2A 2A C37.94SM, 1300nm single-mode, ELED, 1 channel single-mode
COMMUNICATIONS 2B 2B C37.94SM, 1300nm single-mode, ELED, 2 channel single-mode
(select a maximum of 1 per unit) 72 72 1550 nm, single-mode, LASER, 1 Channel
73 73 1550 nm, single-mode, LASER, 2 Channel
74 74 Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER
75 75 Channel 1 - G.703; Channel 2 - 1550 nm, Single-mode LASER
76 76 IEEE C37.94, 820 nm, multimode, LED, 1 Channel
77 77 IEEE C37.94, 820 nm, multimode, LED, 2 Channels
7A 7A 820 nm, multi-mode, LED, 1 Channel
7B 7B 1300 nm, multi-mode, LED, 1 Channel
7C 7C 1300 nm, single-mode, ELED, 1 Channel
7D 7D 1300 nm, single-mode, LASER, 1 Channel
7E 7E Channel 1 - G.703; Channel 2 - 820 nm, multi-mode
7F 7F Channel 1 - G.703; Channel 2 - 1300 nm, multi-mode
7G 7G Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED
7H 7H 820 nm, multi-mode, LED, 2 Channels
7I 7I 1300 nm, multi-mode, LED, 2 Channels
7J 7J 1300 nm, single-mode, ELED, 2 Channels
7K 7K 1300 nm, single-mode, LASER, 2 Channels
7L 7L Channel 1 - RS422; Channel 2 - 820 nm, multi-mode, LED
7M 7M Channel 1 - RS422; Channel 2 - 1300 nm, multi-mode, LED
7N 7N Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED
7P 7P Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASER
7Q 7Q Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER
7R 7R G.703, 1 Channel
7S 7S G.703, 2 Channels
7T 7T RS422, 1 Channel
7W 7W RS422, 2 Channels

GE Multilin B30 Bus Differential Relay 2-3

 2.1 INTRODUCTION 2 PRODUCT DESCRIPTION

Table 2–4: B30 ORDER CODES (REDUCED SIZE VERTICAL UNITS)

B30 - * ** - * * * - F ** - H ** - L ** - N ** - R ** Reduced Size Vertical Mount
BASE UNIT B30 | | | | | | | | | | Base Unit
CPU E | | | | | | | | | RS485 and RS485
G | | | | | | | | | RS485 and multi-mode ST 10Base-F
H | | | | | | | | | RS485 and multi-mode ST redundant 10Base-F
J | | | | | | | | | RS485 and multi-mode ST 100Base-FX
K | | | | | | | | | RS485 and multi-mode ST redundant 100Base-FX
L | | | | | | | | | RS485 and single mode SC 100Base-FX
M | | | | | | | | | RS485 and single mode SC redundant 100Base-FX

2 N
P
R
|
|
|
| |
| |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| RS485 and 10/100Base-T
| RS485 and single mode ST 100Base-FX
| RS485 and single mode ST redundant 100Base-FX
SOFTWARE 00 | | | | | | | | No Software Options
01 | | | | | | | | Ethernet Global Data (EGD); not available for Type E CPUs
03 | | | | | | | | IEC 61850; not available for Type E CPUs
04 | | | | | | | | Ethernet Global Data (EGD) and IEC 61850; not available for Type E CPUs
MOUNT/COATING V | | | | | | | Vertical (3/4 rack)
B | | | | | | | Vertical (3/4 rack) with harsh environmental coating
FACEPLATE/ DISPLAY F | | | | | | English display
L | | | | | | English display with 4 small and 6 large programmable pushbuttons
K | | | | | | Chinese display
M | | | | | | Chinese display with 4 small and 6 large programmable pushbuttons
H | | | | | | French display
N | | | | | | French display with 4 small and 6 large programmable pushbuttons
J | | | | | | Russian display
Q | | | | | | Russian display with 4 small and 6 large programmable pushbuttons
POWER SUPPLY H | | | | | 125 / 250 V AC/DC power supply
L | | | | | 24 to 48 V (DC only) power supply
CT/VT MODULES 8F | 8F | | Standard 4CT/4VT
8G | 8G | | Sensitive Ground 4CT/4VT
8H | 8H | | Standard 8CT
8J | 8J | | Sensitive Ground 8CT
DIGITAL INPUTS/OUTPUTS XX XX XX XX No Module
4A 4A 4A | 4 Solid-State (no monitoring) MOSFET outputs
4B 4B 4B | 4 Solid-State (voltage with optional current) MOSFET outputs
4C 4C 4C | 4 Solid-State (current with optional voltage) MOSFET outputs
4D 4D 4D | 16 digital inputs with Auto-Burnishing
4L 4L 4L | 14 Form-A (no monitoring) Latching outputs
67 67 67 | 8 Form-A (no monitoring) outputs
6A 6A 6A | 2 Form-A (voltage with optional current) and 2 Form-C outputs, 8 digital inputs
6B 6B 6B | 2 Form-A (voltage with optional current) and 4 Form-C outputs, 4 digital inputs
6C 6C 6C | 8 Form-C outputs
6D 6D 6D | 16 digital inputs
6E 6E 6E | 4 Form-C outputs, 8 digital inputs
6F 6F 6F | 8 Fast Form-C outputs
6G 6G 6G | 4 Form-A (voltage with optional current) outputs, 8 digital inputs
6H 6H 6H | 6 Form-A (voltage with optional current) outputs, 4 digital inputs
6K 6K 6K | 4 Form-C and 4 Fast Form-C outputs
6L 6L 6L | 2 Form-A (current with optional voltage) and 2 Form-C outputs, 8 digital inputs
6M 6M 6M | 2 Form-A (current with optional voltage) and 4 Form-C outputs, 4 digital inputs
6N 6N 6N | 4 Form-A (current with optional voltage) outputs, 8 digital inputs
6P 6P 6P | 6 Form-A (current with optional voltage) outputs, 4 digital inputs
6R 6R 6R | 2 Form-A (no monitoring) and 2 Form-C outputs, 8 digital inputs
6S 6S 6S | 2 Form-A (no monitoring) and 4 Form-C outputs, 4 digital inputs
6T 6T 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs
6U 6U 6U | 6 Form-A (no monitoring) outputs, 4 digital inputs
TRANSDUCER 5A 5A 5A | 4 dcmA inputs, 4 dcmA outputs (only one 5A module is allowed)
INPUTS/OUTPUTS 5C 5C 5C | 8 RTD inputs
(select a maximum of 3 per unit) 5D 5D 5D | 4 RTD inputs, 4 dcmA outputs (only one 5D module is allowed)
5E 5E 5E | 4 RTD inputs, 4 dcmA inputs
5F 5F 5F | 8 dcmA inputs
INTER-RELAY 2A C37.94SM, 1300nm single-mode, ELED, 1 channel single-mode
COMMUNICATIONS 2B C37.94SM, 1300nm single-mode, ELED, 2 channel single-mode
(select a maximum of 1 per unit) 72 1550 nm, single-mode, LASER, 1 Channel
73 1550 nm, single-mode, LASER, 2 Channel
74 Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER
75 Channel 1 - G.703; Channel 2 - 1550 nm, Single-mode LASER
76 IEEE C37.94, 820 nm, multimode, LED, 1 Channel
77 IEEE C37.94, 820 nm, multimode, LED, 2 Channels
7A 820 nm, multi-mode, LED, 1 Channel
7B 1300 nm, multi-mode, LED, 1 Channel
7C 1300 nm, single-mode, ELED, 1 Channel
7D 1300 nm, single-mode, LASER, 1 Channel
7E Channel 1 - G.703; Channel 2 - 820 nm, multi-mode
7F Channel 1 - G.703; Channel 2 - 1300 nm, multi-mode
7G Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED
7H 820 nm, multi-mode, LED, 2 Channels
7I 1300 nm, multi-mode, LED, 2 Channels
7J 1300 nm, single-mode, ELED, 2 Channels
7K 1300 nm, single-mode, LASER, 2 Channels
7L Channel 1 - RS422; Channel 2 - 820 nm, multi-mode, LED
7M Channel 1 - RS422; Channel 2 - 1300 nm, multi-mode, LED
7N Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED
7P Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASER
7Q Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER
7R G.703, 1 Channel
7S G.703, 2 Channels
7T RS422, 1 Channel
7W RS422, 2 Channels

2-4 B30 Bus Differential Relay GE Multilin

 2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

The order codes for replacement modules to be ordered separately are shown in the following table. When ordering a
replacement CPU module or faceplate, please provide the serial number of your existing unit.
Table 2–5: ORDER CODES FOR REPLACEMENT MODULES
UR - ** - *
POWER SUPPLY | 1H | 125 / 250 V AC/DC
(redundant supply only | 1L | 24 to 48 V (DC only)
available in horizontal units; must | RH | redundant 125 / 250 V AC/DC
be same type as main supply) | RH | redundant 24 to 48 V (DC only)
CPU | 9E | RS485 and RS485 (Modbus RTU, DNP 3.0)
| 9G | RS485 and 10Base-F (Ethernet, Modbus TCP/IP, DNP 3.0)
|
|
|
9H
9J
9K
|
|
|
RS485 and Redundant 10Base-F (Ethernet, Modbus TCP/IP, DNP 3.0)
RS485 and multi-mode ST 100Base-FX (Ethernet, Modbus TCP/IP, DNP 3.0)
RS485 and multi-mode ST redundant 100Base-FX (Ethernet, Modbus TCP/IP, DNP 3.0)
2
| 9L | RS485 and single mode SC 100Base-FX (Ethernet, Modbus TCP/IP, DNP 3.0)
| 9M | RS485 and single mode SC redundant 100Base-FX (Ethernet, Modbus TCP/IP, DNP 3.0)
| 9N | RS485 and 10/100Base-T (Ethernet, Modbus TCP/IP, DNP 3.0)
| 9P | RS485 and single mode ST 100Base-FX (Ethernet, Modbus TCP/IP, DNP 3.0)
| 9R | RS485 and single mode ST redundant 100Base-FX (Ethernet, Modbus TCP/IP, DNP 3.0)
FACEPLATE/DISPLAY | 3C | Horizontal faceplate with keypad and English display
| 3P | Horizontal faceplate with keypad, user-programmable pushbuttons, and English display
| 3R | Horizontal faceplate with keypad and Russian display
| 3S | Horizontal faceplate with keypad, user-programmable pushbuttons, and Russian display
| 3A | Horizontal faceplate with keypad and Chinese display
| 3B | Horizontal faceplate with keypad, user-programmable pushbuttons, and Chinese display
| 3D | Horizontal faceplate with keypad and French display
| 3G | Horizontal faceplate with keypad, user-programmable pushbuttons, and French display
| 3F | Vertical faceplate with keypad and English display
| 3L | Vertical faceplate with keypad, user-programmable pushbuttons, and English display
| 3K | Vertical faceplate with keypad and Russian display
| 3M | Vertical faceplate with keypad, user-programmable pushbuttons, and Russian display
| 3H | Vertical faceplate with keypad and Chinese display
| 3N | Vertical faceplate with keypad, user-programmable pushbuttons, and Chinese display
| 3J | Vertical faceplate with keypad and French display
| 3Q | Vertical faceplate with keypad, user-programmable pushbuttons, and French display
DIGITAL | 4A | 4 Solid-State (no monitoring) MOSFET outputs
INPUTS/OUTPUTS | 4B | 4 Solid-State (voltage with optional current) MOSFET outputs
| 4C | 4 Solid-State (current with optional voltage) MOSFET outputs
| 4D | 16 digital inputs with Auto-Burnishing
| 4L | 14 Form-A (no monitoring) Latching outputs
| 67 | 8 Form-A (no monitoring) outputs
| 6A | 2 Form-A (voltage with optional current) and 2 Form-C outputs, 8 digital inputs
| 6B | 2 Form-A (voltage with optional current) and 4 Form-C outputs, 4 digital inputs
| 6C | 8 Form-C outputs
| 6D | 16 digital inputs
| 6E | 4 Form-C outputs, 8 digital inputs
| 6F | 8 Fast Form-C outputs
| 6G | 4 Form-A (voltage with optional current) outputs, 8 digital inputs
| 6H | 6 Form-A (voltage with optional current) outputs, 4 digital inputs
| 6K | 4 Form-C and 4 Fast Form-C outputs
| 6L | 2 Form-A (current with optional voltage) and 2 Form-C outputs, 8 digital inputs
| 6M | 2 Form-A (current with optional voltage) and 4 Form-C outputs, 4 digital inputs
| 6N | 4 Form-A (current with optional voltage) outputs, 8 digital inputs
| 6P | 6 Form-A (current with optional voltage) outputs, 4 digital inputs
| 6R | 2 Form-A (no monitoring) and 2 Form-C outputs, 8 digital inputs
| 6S | 2 Form-A (no monitoring) and 4 Form-C outputs, 4 digital inputs
| 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs
| 6U | 6 Form-A (no monitoring) outputs, 4 digital inputs
CT/VT | 8F | Standard 4CT/4VT
MODULES | 8G | Sensitive Ground 4CT/4VT
(NOT AVAILABLE FOR THE C30) | 8H | Standard 8CT
| 8J | Sensitive Ground 8CT
UR INTER-RELAY COMMUNICATIONS | 2A | C37.94SM, 1300nm single-mode, ELED, 1 channel single-mode
| 2B | C37.94SM, 1300nm single-mode, ELED, 2 channel single-mode
| 72 | 1550 nm, single-mode, LASER, 1 Channel
| 73 | 1550 nm, single-mode, LASER, 2 Channel
| 74 | Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER
| 75 | Channel 1 - G.703; Channel 2 - 1550 nm, Single-mode LASER
| 76 | IEEE C37.94, 820 nm, multimode, LED, 1 Channel
| 77 | IEEE C37.94, 820 nm, multimode, LED, 2 Channels
| 7A | 820 nm, multi-mode, LED, 1 Channel
| 7B | 1300 nm, multi-mode, LED, 1 Channel
| 7C | 1300 nm, single-mode, ELED, 1 Channel
| 7D | 1300 nm, single-mode, LASER, 1 Channel
| 7E | Channel 1 - G.703; Channel 2 - 820 nm, multi-mode
| 7F | Channel 1 - G.703; Channel 2 - 1300 nm, multi-mode
| 7G | Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED
| 7H | 820 nm, multi-mode, LED, 2 Channels
| 7I | 1300 nm, multi-mode, LED, 2 Channels
| 7J | 1300 nm, single-mode, ELED, 2 Channels
| 7K | 1300 nm, single-mode, LASER, 2 Channels
| 7L | Channel 1 - RS422; Channel 2 - 820 nm, multi-mode, LED
| 7M | Channel 1 - RS422; Channel 2 - 1300 nm, multi-mode, LED
| 7N | Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED
| 7P | Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASER
| 7Q | Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER
| 7R | G.703, 1 Channel
| 7S | G.703, 2 Channels
| 7T | RS422, 1 Channel
| 7W | RS422, 2 Channels
TRANSDUCER | 5A | 4 dcmA inputs, 4 dcmA outputs (only one 5A module is allowed)
INPUTS/OUTPUTS | 5C | 8 RTD inputs
| 5D | 4 RTD inputs, 4 dcmA outputs (only one 5D module is allowed)
| 5E | 4 dcmA inputs, 4 RTD inputs
| 5F | 8 dcmA inputs

GE Multilin B30 Bus Differential Relay 2-5

 2.2 SPECIFICATIONS 2 PRODUCT DESCRIPTION

2.2SPECIFICATIONS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

2.2.1 PROTECTION ELEMENTS

The operating times below include the activation time of a trip rated Form-A output contact unless otherwise indi-
cated. FlexLogic™ operands of a given element are 4 ms faster. This should be taken into account when using
2 NOTE
FlexLogic™ to interconnect with other protection or control elements of the relay, building FlexLogic™ equations, or
interfacing with other IEDs or power system devices via communications or different output contacts.
BUS DIFFERENTIAL (87B) PHASE/NEUTRAL/GROUND IOC
Pickup level: 0.050 to 2.000 pu in steps of 0.001 Current: Phasor only
Low slope: 15 to 100% in steps of 1 Pickup level: 0.000 to 30.000 pu in steps of 0.001
High slope: 50 to 100% in steps of 1 Dropout level: 97 to 98% of pickup
Low breakpoint: 1.00 to 30.00 pu in steps of 0.01 Level accuracy:
High breakpoint: 1.00 to 30.00 pu in steps of 0.01 0.1 to 2.0 × CT rating: ±0.5% of reading or ±1% of rated
(whichever is greater)
High set level: 0.10 to 99.99 pu in steps of 0.01
> 2.0 × CT rating ±1.5% of reading
Dropout level: 97 to 98% of Pickup
Overreach: <2%
Level accuracy:
Pickup delay: 0.00 to 600.00 s in steps of 0.01
0.1 to 2.0 × CT rating: ±0.5% of reading or ±1% of rated (which-
ever is greater) Reset delay: 0.00 to 600.00 s in steps of 0.01
>2.0 × CT rating ±1.5% of reading Operate time: <16 ms at 3 × Pickup at 60 Hz
Operating time: one power system cycle (typical) (Phase/Ground IOC)
<20 ms at 3 × Pickup at 60 Hz
CT TROUBLE (Neutral IOC)
Responding to: Differential current Timing accuracy: Operate at 1.5 × Pickup
Pickup level: 0.020 to 2.000 pu in steps of 0.001 ±3% or ±4 ms (whichever is greater)
Pickup delay: 1.0 to 60.0 sec. in steps of 0.1
PHASE UNDERVOLTAGE
PHASE/NEUTRAL/GROUND TOC Pickup level: 0.000 to 3.000 pu in steps of 0.001
Current: Phasor or RMS Dropout level: 102 to 103% of pickup
Pickup level: 0.000 to 30.000 pu in steps of 0.001 Level accuracy: ±0.5% of reading from 10 to 208 V
Dropout level: 97% to 98% of Pickup Curve shapes: GE IAV Inverse;
Level accuracy: Definite Time (0.1s base curve)
for 0.1 to 2.0 × CT: ±0.5% of reading or ±1% of rated Curve multiplier: Time dial = 0.00 to 600.00 in steps of
(whichever is greater) 0.01
for > 2.0 × CT: ±1.5% of reading > 2.0 × CT rating Timing accuracy: Operate at < 0.90 × pickup
Curve shapes: IEEE Moderately/Very/Extremely ±3.5% of operate time or ±4 ms (which-
Inverse; IEC (and BS) A/B/C and Short ever is greater)
Inverse; GE IAC Inverse, Short/Very/
Extremely Inverse; I2t; FlexCurves™ NEUTRAL OVERVOLTAGE
(programmable); Definite Time (0.01 s Pickup level: 0.000 to 3.000 pu in steps of 0.001
base curve) Dropout level: 97 to 98% of Pickup
Curve multiplier: Time Dial = 0.00 to 600.00 in steps of Level accuracy: ±0.5% of reading from 10 to 208 V
0.01 Pickup delay: 0.00 to 600.00 s in steps of 0.01 (definite
Reset type: Instantaneous/Timed (per IEEE) time) or user-defined curve
Timing accuracy: Operate at > 1.03 × actual Pickup Reset delay: 0.00 to 600.00 s in steps of 0.01
±3.5% of operate time or ±½ cycle Timing accuracy: ±3% or ±20 ms (whichever is greater)
(whichever is greater) Operate time: < 30 ms at 1.10 × Pickup at 60 Hz
AUXILIARY OVERVOLTAGE
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 97 to 98% of Pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Pickup delay: 0 to 600.00 s in steps of 0.01
Reset delay: 0 to 600.00 s in steps of 0.01
Timing accuracy: ±3% of operate time or ±4 ms
(whichever is greater)
Operate time: < 30 ms at 1.10 × pickup at 60 Hz

2-6 B30 Bus Differential Relay GE Multilin

 2 PRODUCT DESCRIPTION 2.2 SPECIFICATIONS

BREAKER FAILURE
Mode: 1-pole, 3-pole
Current supervision: phase, neutral current
Current supv. pickup: 0.001 to 30.000 pu in steps of 0.001
Current supv. dropout: 97 to 98% of pickup
Current supv. accuracy:
0.1 to 2.0 × CT rating: ±0.75% of reading or ±2% of rated
(whichever is greater)
above 2 × CT rating: ±2.5% of reading 2
2.2.2 USER-PROGRAMMABLE ELEMENTS

FLEXLOGIC™ USER-PROGRAMMABLE LEDs

Programming language: Reverse Polish Notation with graphical Number: 48 plus Trip and Alarm
visualization (keypad programmable) Programmability: from any logical variable, contact, or vir-
Lines of code: 512 tual input
Internal variables: 64 Reset mode: Self-reset or Latched
Supported operations: NOT, XOR, OR (2 to 16 inputs), AND (2 LED TEST
to 16 inputs), NOR (2 to 16 inputs),
Initiation: from any digital input or user-program-
NAND (2 to 16 inputs), Latch (Reset mable condition
dominant), Edge Detectors, Timers
Number of tests: 3, interruptible at any time
Inputs: any logical variable, contact, or virtual
Duration of full test: approximately 3 minutes
input
Number of timers: 32 Test sequence 1: all LEDs on

Pickup delay: 0 to 60000 (ms, sec., min.) in steps of 1 Test sequence 2: all LEDs off, one LED at a time on for 1 s

Dropout delay: 0 to 60000 (ms, sec., min.) in steps of 1 Test sequence 3: all LEDs on, one LED at a time off for 1 s

FLEXCURVES™ USER-DEFINABLE DISPLAYS

Number of displays: 16
Number: 4 (A through D)
Lines of display: 2 × 20 alphanumeric characters
Reset points: 40 (0 through 1 of pickup)
Parameters: up to 5, any Modbus register addresses
Operate points: 80 (1 through 20 of pickup)
Invoking and scrolling: keypad, or any user-programmable con-
Time delay: 0 to 65535 ms in steps of 1
dition, including pushbuttons
FLEX STATES
Number: up to 256 logical variables grouped
CONTROL PUSHBUTTONS
Number of pushbuttons: 7
under 16 Modbus addresses
Operation: drive FlexLogic™ operands
Programmability: any logical variable, contact, or virtual
input USER-PROGRAMMABLE PUSHBUTTONS (OPTIONAL)
FLEXELEMENTS™ Number of pushbuttons: 12
Number of elements: 8 Mode: Self-Reset, Latched
Operating signal: any analog actual value, or two values in Display message: 2 lines of 20 characters each
differential mode SELECTOR SWITCH
Operating signal mode: Signed or Absolute Value Number of elements: 2
Operating mode: Level, Delta Upper position limit: 1 to 7 in steps of 1
Comparator direction: Over, Under Selecting mode: Time-out or Acknowledge
Pickup Level: –30.000 to 30.000 pu in steps of 0.001 Time-out timer: 3.0 to 60.0 s in steps of 0.1
Hysteresis: 0.1 to 50.0% in steps of 0.1 Control inputs: step-up and 3-bit
Delta dt: 20 ms to 60 days Power-up mode: restore from non-volatile memory or syn-
Pickup & dropout delay: 0.000 to 65.535 s in steps of 0.001 chronize to a 3-bit control input or Synch/
Restore mode
NON-VOLATILE LATCHES
Type: Set-dominant or Reset-dominant
Number: 16 (individually programmed)
Output: Stored in non-volatile memory
Execution sequence: As input prior to protection, control, and
FlexLogic™

GE Multilin B30 Bus Differential Relay 2-7

 2.2 SPECIFICATIONS 2 PRODUCT DESCRIPTION

2.2.3 MONITORING

OSCILLOGRAPHY EVENT RECORDER

Maximum records: 64 Capacity: 1024 events
Sampling rate: 64 samples per power cycle Time-tag: to 1 microsecond
Triggers: Any element pickup, dropout or operate Triggers: Any element pickup, dropout or operate
Digital input change of state Digital input change of state
2 Digital output change of state
FlexLogic™ equation
Digital output change of state
Self-test events
Data: AC input channels Data storage: In non-volatile memory
Element state
Digital input state
USER-PROGRAMMABLE FAULT REPORT
Digital output state Number of elements: 2
Data storage: In non-volatile memory Pre-fault trigger: any FlexLogic™ operand
Fault trigger: any FlexLogic™ operand
Recorder quantities: 32 (any FlexAnalog value)

2.2.4 METERING

RMS CURRENT: PHASE, NEUTRAL, AND GROUND FREQUENCY

Accuracy at Accuracy at
0.1 to 2.0 × CT rating: ±0.25% of reading or ±0.1% of rated V = 0.8 to 1.2 pu: ±0.01 Hz (when voltage signal is used
(whichever is greater) for frequency measurement)
> 2.0 × CT rating: ±1.0% of reading I = 0.1 to 0.25 pu: ±0.05 Hz
I > 0.25 pu: ±0.02 Hz (when current signal is used for
RMS VOLTAGE frequency measurement)
Accuracy: ±0.5% of reading from 10 to 208 V

2.2.5 INPUTS

AC CURRENT CONTACT INPUTS

CT rated primary: 1 to 50000 A Dry contacts: 1000 Ω maximum
CT rated secondary: 1 A or 5 A by connection Wet contacts: 300 V DC maximum
Nominal frequency: 20 to 65 Hz Selectable thresholds: 17 V, 33 V, 84 V, 166 V
Relay burden: < 0.2 VA at rated secondary Tolerance: ±10%
Conversion range: Contacts per common return: 4
Standard CT: 0.02 to 46 × CT rating RMS symmetrical Recognition time: < 1 ms
Sensitive Ground module:
Debounce time: 0.0 to 16.0 ms in steps of 0.5
0.002 to 4.6 × CT rating RMS symmetrical
Continuous current draw:3 mA (when energized)
Current withstand: 20 ms at 250 times rated
1 sec. at 100 times rated CONTACT INPUTS WITH AUTO-BURNISHING
continuous at 3 times rated Dry contacts: 1000 Ω maximum
AC VOLTAGE Wet contacts: 300 V DC maximum
VT rated secondary: 50.0 to 240.0 V Selectable thresholds: 17 V, 33 V, 84 V, 166 V
VT ratio: 1.00 to 24000.00 Tolerance: ±10%
Nominal frequency: 20 to 65 Hz Contacts per common return: 2
Relay burden: < 0.25 VA at 120 V Recognition time: < 1 ms
Conversion range: 1 to 275 V Debounce time: 0.0 to 16.0 ms in steps of 0.5
Voltage withstand: continuous at 260 V to neutral Continuous current draw:3 mA (when energized)
1 min./hr at 420 V to neutral Auto-burnish impulse current: 50 to 70 mA
Duration of auto-burnish impulse: 25 to 50 ms
DCMA INPUTS
Current input (mA DC): 0 to –1, 0 to +1, –1 to +1, 0 to 5, 0 to 10,
0 to 20, 4 to 20 (programmable)
Input impedance: 379 Ω ±10%
Conversion range: –1 to + 20 mA DC
Accuracy: ±0.2% of full scale
Type: Passive

2-8 B30 Bus Differential Relay GE Multilin

 2 PRODUCT DESCRIPTION 2.2 SPECIFICATIONS

RTD INPUTS DIRECT INPUTS

Types (3-wire): 100 Ω Platinum, 100 & 120 Ω Nickel, 10 Number of input points: 32
Ω Copper No. of remote devices: 16
Sensing current: 5 mA Default states on loss of comms.: On, Off, Latest/Off, Latest/On
Range: –50 to +250°C Ring configuration: Yes, No
Accuracy: ±2°C Data rate: 64 or 128 kbps
Isolation: 36 V pk-pk CRC: 32-bit
IRIG-B INPUT
Amplitude modulation: 1 to 10 V pk-pk
CRC alarm:
Responding to: Rate of messages failing the CRC
2
Monitoring message count: 10 to 10000 in steps of 1
DC shift: TTL
Alarm threshold: 1 to 1000 in steps of 1
Input impedance: 22 kΩ
Unreturned message alarm:
Isolation: 2 kV
Responding to: Rate of unreturned messages in the ring
REMOTE INPUTS (MMS GOOSE) configuration
Number of input points: 32, configured from 64 incoming bit pairs Monitoring message count: 10 to 10000 in steps of 1
Number of remote devices:16 Alarm threshold: 1 to 1000 in steps of 1

Default states on loss of comms.: On, Off, Latest/Off, Latest/On

2.2.6 POWER SUPPLY

LOW RANGE ALL RANGES

Nominal DC voltage: 24 to 48 V Volt withstand: 2 × Highest Nominal Voltage for 10 ms
Min/max DC voltage: 20 / 60 V Power consumption: typical = 15 to 20 W/VA
Voltage loss hold-up: 20 ms duration at nominal maximum = 50 W/VA
NOTE: Low range is DC only. contact factory for exact order code con-
sumption
HIGH RANGE
Nominal DC voltage: 125 to 250 V
INTERNAL FUSE
RATINGS
Min/max DC voltage: 88 / 300 V
Low range power supply: 8 A / 250 V
Nominal AC voltage: 100 to 240 V at 50/60 Hz High range power supply: 4 A / 250 V
Min/max AC voltage: 88 / 265 V at 25 to 100 Hz INTERRUPTING CAPACITY
Voltage loss hold-up: 200 ms duration at nominal AC: 100 000 A RMS symmetrical
DC: 10 000 A

2.2.7 OUTPUTS

FORM-A RELAY FORM-A VOLTAGE MONITOR

Applicable voltage: approx. 15 to 250 V DC
Make and carry for 0.2 s: 30 A as per ANSI C37.90
Trickle current: approx. 1 to 2.5 mA
Carry continuous: 6A
Break (DC inductive, L/R = 40 ms): FORM-A CURRENT MONITOR
VOLTAGE CURRENT Threshold current: approx. 80 to 100 mA
24 V 1A FORM-C AND CRITICAL FAILURE RELAY
48 V 0.5 A Make and carry for 0.2 s: 30 A as per ANSI C37.90
125 V 0.3 A Carry continuous: 8A
250 V 0.2 A Break (DC inductive, L/R = 40 ms):
Operate time: < 4 ms VOLTAGE CURRENT
Contact material: silver alloy 24 V 1A
48 V 0.5 A
LATCHING RELAY
125 V 0.3 A
Make and carry for 0.2 s: 30 A as per ANSI C37.90
250 V 0.2 A
Carry continuous: 6A
Break at L/R of 40 ms: 0.25 A DC max. Operate time: < 8 ms
Operate time: < 4 ms Contact material: silver alloy
Contact material: silver alloy
Control: separate operate and reset inputs
Control mode: operate-dominant or reset-dominant

GE Multilin B30 Bus Differential Relay 2-9

 2.2 SPECIFICATIONS 2 PRODUCT DESCRIPTION

FAST FORM-C RELAY IRIG-B OUTPUT

Make and carry: 0.1 A max. (resistive load) Amplitude: 10 V peak-peak RS485 level
Minimum load impedance: Maximum load: 100 ohms
INPUT IMPEDANCE Time delay: 1 ms for AM input
VOLTAGE 40 μs for DC-shift input
2 W RESISTOR 1 W RESISTOR
250 V DC 20 KΩ 50 KΩ Isolation: 2 kV

120 V DC 5 KΩ 2 KΩ CONTROL POWER EXTERNAL OUTPUT

2 48 V DC 2 KΩ 2 KΩ (FOR DRY CONTACT INPUT)
Capacity: 100 mA DC at 48 V DC
24 V DC 2 KΩ 2 KΩ
Isolation: ±300 Vpk
Note: values for 24 V and 48 V are the same due to a
required 95% voltage drop across the load impedance. REMOTE OUTPUTS (IEC 61850 GSSE/GOOSE)
Operate time: < 0.6 ms Standard output points: 32
Internal Limiting Resistor: 100 Ω, 2 W User output points: 32
SOLID-STATE OUTPUT RELAY DIRECT OUTPUTS
Operate and release time: <100 μs Output points: 32
Maximum voltage: 265 V DC DCMA OUTPUTS
Maximum continuous current: 5 A at 45°C; 4 A at 65°C Range: –1 to 1 mA, 0 to 1 mA, 4 to 20 mA
Make and carry: Max. load resistance: 12 kΩ for –1 to 1 mA range
for 0.2 s: 30 A as per ANSI C37.90 12 kΩ for 0 to 1 mA range
for 0.03 s 300 A 600 Ω for 4 to 20 mA range
Breaking capacity: Accuracy: ±0.75% of full-scale for 0 to 1 mA range
UL508 Utility Industrial ±0.5% of full-scale for –1 to 1 mA range
application application ±0.75% of full-scale for 0 to 20 mA range
(autoreclose
scheme) 99% Settling time to a step change: 100 ms
Operations/ 5000 ops / 5 ops / Isolation: 1.5 kV
interval 1 s-On, 9 s-Off 0.2 s-On, 10000 ops / Driving signal: any FlexAnalog quantity
0.2 s-Off 0.2 s-On,
1000 ops / within 1 30 s-Off Upper and lower limit for the driving signal: –90 to 90 pu in steps of
0.5 s-On, 0.5 s-Off minute 0.001
Break 3.2 A
capability L/R = 10 ms
(0 to 250 V
DC) 1.6 A 10 A 10 A
L/R = 20 ms L/R = 40 ms L/R = 40 ms
0.8 A
L/R = 40 ms

2.2.8 COMMUNICATIONS

RS232 ETHERNET (FIBER)

Front port: 19.2 kbps, Modbus® RTU
PARAMETER FIBER TYPE
RS485 10MB MULTI- 100MB MULTI- 100MB SINGLE-
1 or 2 rear ports: Up to 115 kbps, Modbus® RTU, isolated MODE MODE MODE
together at 36 Vpk Wavelength 820 nm 1310 nm 1310 nm
Typical distance: 1200 m Connector ST ST SC
Isolation: 2 kV Transmit power –20 dBm –20 dBm –15 dBm
Receiver sensitivity –30 dBm –30 dBm –30 dBm
Power budget 10 dB 10 dB 15 dB
Maximum input –7.6 dBm –14 dBm –7 dBm
power
Typical distance 1.65 km 2 km 15 km
Duplex full/half full/half full/half
Redundancy yes yes yes

ETHERNET (COPPER)
Modes: 10 MB, 10/100 MB (auto-detect)
Connector: RJ45
SNTP clock synchronization error: <10 ms (typical)

2-10 B30 Bus Differential Relay GE Multilin

 2 PRODUCT DESCRIPTION 2.2 SPECIFICATIONS

2.2.9 INTER-RELAY COMMUNICATIONS

SHIELDED TWISTED-PAIR INTERFACE OPTIONS TYPICAL LINK DISTANCE

INTERFACE TYPE TYPICAL DISTANCE EMITTER TYPE FIBER TYPE CONNECTOR TYPICAL
TYPE DISTANCE
RS422 1200 m
820 nm LED Multimode ST 1.65 km
G.703 100 m
1300 nm LED Multimode ST 3.8 km
RS422 distance is based on transmitter power 1300 nm ELED Singlemode ST 11.4 km 2
NOTE and does not take into consideration the clock
1300 nm Laser Singlemode ST 64 km
source provided by the user.
1550 nm Laser Singlemode ST 105 km
LINK POWER BUDGET
EMITTER, TRANSMIT RECEIVED POWER Typical distances listed are based on the fol-
FIBER TYPE POWER SENSITIVITY BUDGET lowing assumptions for system loss. As
820 nm LED, –20 dBm –30 dBm 10 dB NOTE
actual losses will vary from one installation to
Multimode another, the distance covered by your system
1300 nm LED, –21 dBm –30 dBm 9 dB may vary.
Multimode
1300 nm ELED, –21 dBm –30 dBm 9 dB CONNECTOR LOSSES (TOTAL OF BOTH ENDS)
Singlemode ST connector 2 dB
1300 nm Laser, –1 dBm –30 dBm 29 dB FIBER LOSSES
Singlemode
820 nm multimode 3 dB/km
1550 nm Laser, +5 dBm –30 dBm 35 dB 1300 nm multimode 1 dB/km
Singlemode
1300 nm singlemode 0.35 dB/km
These Power Budgets are calculated from the 1550 nm singlemode 0.25 dB/km
NOTE manufacturer’s worst-case transmitter power Splice losses: One splice every 2 km,
and worst case receiver sensitivity. at 0.05 dB loss per splice.
MAXIMUM OPTICAL INPUT POWER SYSTEM MARGIN
EMITTER, FIBER TYPE MAX. OPTICAL 3 dB additional loss added to calculations to compensate for
INPUT POWER all other losses.
820 nm LED, Multimode –7.6 dBm
Compensated difference in transmitting and receiving (channel
1300 nm LED, Multimode –11 dBm
asymmetry) channel delays using GPS satellite clock: 10 ms
1300 nm ELED, Singlemode –14 dBm
1300 nm Laser, Singlemode –14 dBm
1550 nm Laser, Singlemode –14 dBm

2.2.10 ENVIRONMENTAL

AMBIENT TEMPERATURES OTHER

Operating: –40 to 60°C Humidity (non-condensing): IEC 60068-2-30, 95%, Variant 1, 6
Storage: –40 to 80°C days

The LCD contrast may be impaired at temperatures less Altitude: Up to 2000 m

than –20°C. Installation Category: II
NOTE

GE Multilin B30 Bus Differential Relay 2-11

 2.2 SPECIFICATIONS 2 PRODUCT DESCRIPTION

2.2.11 TYPE TESTS

Electrical fast transient: ANSI/IEEE C37.90.1 Voltage dips/interruptions/variations:

IEC 61000-4-4 IEC 61000-4-11
IEC 60255-22-4 IEC 60255-11
Oscillatory transient: ANSI/IEEE C37.90.1 Power frequency magnetic field immunity:
IEC 61000-4-12 IEC 61000-4-8
Insulation resistance: IEC 60255-5 Pulse magnetic field immunity: IEC 61000-4-9
2 Dielectric strength: IEC 60255-6 Vibration test (sinusoidal): IEC 60255-21-1
ANSI/IEEE C37.90 Shock and bump: IEC 60255-21-2
Electrostatic discharge: EN 61000-4-2 Seismic: IEC 60255-21-3
Surge immunity: EN 61000-4-5 IEEE C37.98
RFI susceptibility: ANSI/IEEE C37.90.2 Cold: IEC 60028-2-1, 16 h at –40°C
IEC 61000-4-3 Dry heat: IEC 60028-2-2, 16 h at 85°C
IEC 60255-22-3
Ontario Hydro C-5047-77 Type test report available upon request.
Conducted RFI: IEC 61000-4-6 NOTE

2.2.12 PRODUCTION TESTS

THERMAL
Products go through an environmental test based upon an
Accepted Quality Level (AQL) sampling process.

2.2.13 APPROVALS

APPROVALS CE:
UL Listed for the USA and Canada LVD 73/23/EEC: IEC 1010-1
EMC 81/336/EEC: EN 50081-2, EN 50082-2

2.2.14 MAINTENANCE

MOUNTING Units that are stored in a de-energized state should be

Attach mounting brackets using 20 inch-pounds (±2 inch-pounds) powered up once per year, for one hour continuously, to
of torque. NOTE
avoid deterioration of electrolytic capacitors.

CLEANING
Normally, cleaning is not required; but for situations where dust
has accumulated on the faceplate display, a dry cloth can be used.

2-12 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.1 DESCRIPTION

3 HARDWARE 3.1DESCRIPTION 3.1.1 PANEL CUTOUT

The relay is available as a 19-inch rack horizontal mount unit or as a reduced size (¾) vertical mount unit, with a removable
faceplate. The modular design allows the relay to be easily upgraded or repaired by a qualified service person. The face-
plate is hinged to allow easy access to the removable modules, and is itself removable to allow mounting on doors with lim-
ited rear depth. There is also a removable dust cover that fits over the faceplate, which must be removed when attempting
to access the keypad or RS232 communications port.
The vertical and horizontal case dimensions are shown below, along with panel cutout details for panel mounting. When
planning the location of your panel cutout, ensure that provision is made for the faceplate to swing open without interfer-
ence to or from adjacent equipment.
The relay must be mounted such that the faceplate sits semi-flush with the panel or switchgear door, allowing the operator
access to the keypad and the RS232 communications port. The relay is secured to the panel with the use of four screws
supplied with the relay.
3

e UR SERIES

Figure 3–1: B30 VERTICAL MOUNTING AND DIMENSIONS

GE Multilin B30 Bus Differential Relay 3-1

 3.1 DESCRIPTION 3 HARDWARE

Figure 3–2: B30 VERTICAL SIDE MOUNTING INSTALLATION

3-2 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.1 DESCRIPTION

Figure 3–3: B30 VERTICAL SIDE MOUNTING REAR DIMENSIONS

Figure 3–4: B30 HORIZONTAL MOUNTING AND DIMENSIONS

GE Multilin B30 Bus Differential Relay 3-3

 3.1 DESCRIPTION 3 HARDWARE

3.1.2 MODULE WITHDRAWAL AND INSERTION

Module withdrawal and insertion may only be performed when control power has been removed from the
unit. Inserting an incorrect module type into a slot may result in personal injury, damage to the unit or con-
WARNING
nected equipment, or undesired operation!
Proper electrostatic discharge protection (i.e. a static strap) must be used when coming in contact with
modules while the relay is energized!
WARNING

The relay, being modular in design, allows for the withdrawal and insertion of modules. Modules must only be replaced with
like modules in their original factory configured slots. The faceplate can be opened to the left, once the sliding latch on the
right side has been pushed up, as shown below. This allows for easy accessibility of the modules for withdrawal.

Figure 3–5: UR MODULE WITHDRAWAL/INSERTION

• MODULE WITHDRAWAL: The ejector/inserter clips, located at the top and bottom of each module, must be pulled
simultaneously to release the module for removal. Before performing this action, control power must be removed
from the relay. Record the original location of the module to ensure that the same or replacement module is inserted
into the correct slot. Modules with current input provide automatic shorting of external CT circuits.
• MODULE INSERTION: Ensure that the correct module type is inserted into the correct slot position. The ejector/
inserter clips located at the top and at the bottom of each module must be in the disengaged position as the module is
smoothly inserted into the slot. Once the clips have cleared the raised edge of the chassis, engage the clips simulta-
neously. When the clips have locked into position, the module will be fully inserted.
All CPU modules except the 9E are equipped with 10Base-T or 10Base-F Ethernet connectors. These connectors
must be individually disconnected from the module before it can be removed from the chassis.
NOTE

The version 4.0 release of the B30 relay includes new hardware (CPU and CT/VT modules). The new CPU mod-
ules are specified with the following order codes: 9E, 9G, 9H, 9J, 9K, 9L, 9M, 9N, 9P, 9R. The new CT/VT modules
NOTE
are specified with the following order codes: 8F, 8G, 8H, 8J.
The new CT/VT modules (8F, 8G, 8H, 8J) can only be used with new CPUs (9E, 9G, 9H, 9J, 9K, 9L, 9M, 9N, 9P,
9R); similarly, old CT/VT modules (8A, 8B, 8C, 8D) can only be used with old CPUs (9A, 9C, 9D). To prevent hard-
ware mismatches, the new modules have blue labels and a warning sticker stating “Attn.: Ensure CPU and DSP
module label colors are the same!”. In the event that there is a mismatch between the CPU and CT/VT module,
the relay will not function and a DSP ERROR or HARDWARE MISMATCH error will be displayed.
All other input/output modules are compatible with the new hardware. Firmware versions 4.0x and higher are only
compatible with the new CPU and CT/VT modules. Previous versions of the firmware (3.4x and earlier) are only
compatible with the older CPU and CT/VT modules.

3-4 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.1 DESCRIPTION

3.1.3 REAR TERMINAL LAYOUT

836772A1.CDR

Figure 3–6: REAR TERMINAL VIEW

Do not touch any rear terminals while the relay is energized!
WARNING

The relay follows a convention with respect to terminal number assignments which are three characters long assigned in
order by module slot position, row number, and column letter. Two-slot wide modules take their slot designation from the
first slot position (nearest to CPU module) which is indicated by an arrow marker on the terminal block. See the following
figure for an example of rear terminal assignments.

Figure 3–7: EXAMPLE OF MODULES IN F AND H SLOTS

GE Multilin B30 Bus Differential Relay 3-5

 3.2 WIRING 3 HARDWARE

3.2WIRING 3.2.1 TYPICAL WIRING

H 1a I

6H
H1
H 1b
H 1c
V A B C
H 2a I
H 2b H2
V F 1a
H 2c IA5
H 3a I
F 1b
H3 IA
H 3b V
H 3c IA1 F 1c F1
H 4a I
H 4b H4 IB5 F 2a
V
H 4c
IB F 2b
H 5a I
H 5b H5 F 2c
V IB1
H 5c
H 6a I IC5 F 3a
H 6b H6

CURRENT INPUTS
V IC F 3b
H 6c

3
H 7a CONTACT IN H 7a

8H / 8J
IC1 F 3c
H 7c CONTACT IN H 7c

DIGITAL I/O
H 8a CONTACT IN H 8a IA5 F 5a
H 8c CONTACT IN H 8c
COMMON IA F 5b
H 7b H7b
H 8b SURGE IA1 F 5c
GE Multilin F2
U 1a I
IB5 F 6a

6H
U 1b U1
U 1c
V
B30 BUS DIFFERENTIAL RELAY IB F 6b
U 2a I
U2 IB1 F 6c
U 2b V
U 2c IC5 F 7a
U 3a I
U 3b U3 IC F 7b
V
U 3c
U 4a I IC1 F 7c
U 4b U4
V
U 4c
U 5a I IA5 L 1a
U 5b U5
V
U 5c IA L 1b
U 6a I
U6 IA1 L 1c F3
U 6b V
Wet U 6c L 2a
IB5
U 7a CONTACT IN U 7a
U 7c CONTACT IN U 7c IB L 2b
DIGITAL I/O

U 8a CONTACT IN U 8a
IB1 L 2c
U 8c CONTACT IN U 8c
U 7b COMMON U7b IC5 L 3a
U 8b SURGE

CURRENT INPUTS
IC L 3b
N1a I
6A

8H/ 8J
N1b N1 IC1 L 3c
V
N1c
N2a I IA5 L 5a
N2b N2 IA L 5b
V
N2c
N3a IA1 L 5c
N3b N3 F4
N3c IB5 L 6a
N4a
IB L 6b
N4b N4
Dry N4c IB1 L 6c
N 5a CONTACT IN N 5a
N 5c CONTACT IN N 5c IC5 L 7a
CONTACT IN N 6a
( DC ONLY )

N 6a L 7b
IC
N 6c CONTACT IN N 6c
N 5b COMMON N 5b IC1 L 7c
N 7a CONTACT IN N 7a
N7c CONTACT IN N 7c
DIGITAL I/O

N 8a CONTACT IN N 8a IA5 S 1a
N 8c CONTACT IN N 8c
IA S 1b
N7b COMMON N7b
N 8b SURGE IA1 S 1c F5
* Fibre 10BaseFL
9H

Tx1 IB5 S 2a
Optic Rx1
NORMAL

Tx2 10BaseFL COM IB S 2b

Rx2
ALTERNATE
1
IB1 S 2c
Ground at
Shielded 10BaseT
twisted pairs IC5 S 3a
Remote
Device D1a
CURRENT INPUTS

RS485
D2a IC S 3b
COM 2
D3a com
8H / 8J

D4b IC1 S 3c
Co-axial *
D4a IRIG-B
IA5 S 5a
Input
Co-axial BNC
IA S 5b
IRIG-B
CPU

Co-axial BNC
Output IA1 S 5c
F6
Co-axial * - For IRIG-B Input B 1b IB5 S 6a
only use one
1

CRITICAL
B 1a
terminal as input B 2b
FAILURE
IB S 6b
B 3a 48 VDC
S 6c
POWER SUPPLY

OUTPUT IB1
B 3b
DC
B5b HI IC5 S 7a
CONTROL
B 6b LO
AC or DC POWER S 7b
B 6a IC
B 8a SURGE
B 8b FILTER IC1 S 7c
No. 10AWG
Minimum
GROUND BUS MODULE ARRANGEMENT
836773A2.CDR
MODULES MUST BE X W V U T S R P N M L K J H G F D B
GROUNDED IF 6 8 6 8 6 8 9 1
TERMINAL IS
PROVIDED I/O CT I/O CT Power
I/O CT CPU
* * * * Supply

* Optional

This diagram is based on the following order code: B30-D00-HCL-F8H-H6H-L8H-N6A-S8H-U6H.

The purpose of this diagram is to provide an example of how the relay is typically wired, not specifically how to wire your own relay. Please
CAUTION
refer to the following pages for examples to help you wire your relay correctly based on your own relay configuration and order code.

Figure 3–8: TYPICAL WIRING DIAGRAM

3-6 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.2 WIRING

3.2.2 DIELECTRIC STRENGTH

The dielectric strength of the UR-series module hardware is shown in the following table:
Table 3–1: DIELECTRIC STRENGTH OF UR-SERIES MODULE HARDWARE
MODULE MODULE FUNCTION TERMINALS DIELECTRIC STRENGTH
TYPE (AC)
FROM TO
1 Power Supply High (+); Low (+); (–) Chassis 2000 V AC for 1 minute
1 Power Supply 48 V DC (+) and (–) Chassis 2000 V AC for 1 minute
1 Power Supply Relay Terminals Chassis 2000 V AC for 1 minute
2 Reserved N/A N/A N/A
3 Reserved N/A N/A N/A
4
5
Reserved
Analog Inputs/Outputs
N/A
All except 8b
N/A
Chassis
N/A
< 50 V DC
3
6 Digital Inputs/Outputs All Chassis 2000 V AC for 1 minute
G.703 All except 2b, 3a, 7b, 8a Chassis 2000 V AC for 1 minute
7
RS422 All except 6a, 7b, 8a Chassis < 50 V DC
8 CT/VT All Chassis 2000 V AC for 1 minute
9 CPU All Chassis 2000 V AC for 1 minute

Filter networks and transient protection clamps are used in the hardware to prevent damage caused by high peak voltage
transients, radio frequency interference (RFI), and electromagnetic interference (EMI). These protective components can
be damaged by application of the ANSI/IEEE C37.90 specified test voltage for a period longer than the specified one
minute.

3.2.3 CONTROL POWER

CONTROL POWER SUPPLIED TO THE RELAY MUST BE CONNECTED TO THE MATCHING POWER SUPPLY
RANGE OF THE RELAY. IF THE VOLTAGE IS APPLIED TO THE WRONG TERMINALS, DAMAGE MAY
CAUTION
OCCUR!
The B30 relay, like almost all electronic relays, contains electrolytic capacitors. These capacitors are well
known to be subject to deterioration over time if voltage is not applied periodically. Deterioration can be
NOTE
avoided by powering the relays up once a year.
The power supply module can be ordered for two possible voltage ranges, with or without a redundant power option. Each
range has a dedicated input connection for proper operation. The ranges are as shown below (see the Technical Specifica-
tions section of Chapter 2 for additional details):
LO range: 24 to 48 V (DC only) nominal
HI range: 125 to 250 V nominal
The power supply module provides power to the relay and supplies power for dry contact input connections.
The power supply module provides 48 V DC power for dry contact input connections and a critical failure relay (see the
Typical Wiring Diagram earlier). The critical failure relay is a Form-C that will be energized once control power is applied
and the relay has successfully booted up with no critical self-test failures. If on-going self-test diagnostic checks detect a
critical failure (see the Self-Test Errors table in Chapter 7) or control power is lost, the relay will de-energize.
For high reliability systems, the B30 has a redundant option in which two B30 power supplies are placed in parallel on the
bus. If one of the power supplies become faulted, the second power supply will assume the full load of the relay without any
interruptions. Each power supply has a green LED on the front of the module to indicate it is functional. The critical fail relay
of the module will also indicate a faulted power supply.
An LED on the front of the module shows the status of the power supply:
LED INDICATION POWER SUPPLY
ON OK
ON / OFF CYCLING Failure
OFF Failure

GE Multilin B30 Bus Differential Relay 3-7

 3.2 WIRING 3 HARDWARE

Figure 3–9: CONTROL POWER CONNECTION

3.2.4 CT/VT MODULES

A CT/VT module may have voltage inputs on Channels 1 through 4 inclusive, or Channels 5 through 8 inclusive. Channels
1 and 5 are intended for connection to Phase A, and are labeled as such in the relay. Channels 2 and 6 are intended for
connection to Phase B, and are labeled as such in the relay. Channels 3 and 7 are intended for connection to Phase C and
are labeled as such in the relay. Channels 4 and 8 are intended for connection to a single phase source. If voltage, this
channel is labelled the auxiliary voltage (VX). If current, this channel is intended for connection to a CT between a system
neutral and ground, and is labelled the ground current (IG).

a) CT INPUTS
VERIFY THAT THE CONNECTION MADE TO THE RELAY NOMINAL CURRENT OF 1 A OR 5 A MATCHES
THE SECONDARY RATING OF THE CONNECTED CTs. UNMATCHED CTs MAY RESULT IN EQUIPMENT
CAUTION
DAMAGE OR INADEQUATE PROTECTION.
The CT/VT module may be ordered with a standard ground current input that is the same as the phase current inputs (Type
8F) or with a sensitive ground input (Type 8G) which is 10 times more sensitive (see the Technical Specifications section for
additional details). Each AC current input has an isolating transformer and an automatic shorting mechanism that shorts the
input when the module is withdrawn from the chassis. There are no internal ground connections on the current inputs. Cur-
rent transformers with 1 to 50000 A primaries and 1 A or 5 A secondaries may be used.
CT connections for both ABC and ACB phase rotations are identical as shown in the Typical Wiring Diagram.
The exact placement of a zero-sequence CT so that ground fault current will be detected is shown below. Twisted pair
cabling on the zero-sequence CT is recommended.

3-8 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.2 WIRING

Figure 3–10: ZERO-SEQUENCE CORE BALANCE CT INSTALLATION

b) VT INPUTS
The phase voltage channels are used for most metering and protection purposes. The auxiliary voltage channel is used as
input for the Synchrocheck and Volts/Hertz features.

827831AA-X5.CDR

827831AA-X3.CDR

Figure 3–11: CT/VT MODULE WIRING

Wherever a tilde “~” symbol appears, substitute with the Slot Position of the module.

NOTE

GE Multilin B30 Bus Differential Relay 3-9

 3.2 WIRING 3 HARDWARE

3.2.5 CONTACT INPUTS/OUTPUTS

Every digital input/output module has 24 terminal connections. They are arranged as three terminals per row, with eight
rows in total. A given row of three terminals may be used for the outputs of one relay. For example, for Form-C relay out-
puts, the terminals connect to the normally open (NO), normally closed (NC), and common contacts of the relay. For a
Form-A output, there are options of using current or voltage detection for feature supervision, depending on the module
ordered. The terminal configuration for contact inputs is different for the two applications.
The digital inputs are grouped with a common return. The B30 has two versions of grouping: four inputs per common return
and two inputs per common return. When a digital input/output module is ordered, four inputs per common is used. The four
inputs per common allows for high-density inputs in combination with outputs, with a compromise of four inputs sharing one
common. If the inputs must be isolated per row, then two inputs per common return should be selected (4D module).
The tables and diagrams on the following pages illustrate the module types (6A, etc.) and contact arrangements that may
3 be ordered for the relay. Since an entire row is used for a single contact output, the name is assigned using the module slot
position and row number. However, since there are two contact inputs per row, these names are assigned by module slot
position, row number, and column position.
UR-SERIES FORM-A / SOLID STATE (SSR) OUTPUT CONTACTS:
Some Form-A/SSR outputs include circuits to monitor the DC voltage across the output contact when it is open, and the DC
current through the output contact when it is closed. Each of the monitors contains a level detector whose output is set to
logic “On = 1” when the current in the circuit is above the threshold setting. The voltage monitor is set to “On = 1” when the
current is above about 1 to 2.5 mA, and the current monitor is set to “On = 1” when the current exceeds about 80 to 100
mA. The voltage monitor is intended to check the health of the overall trip circuit, and the current monitor can be used to
seal-in the output contact until an external contact has interrupted current flow. The block diagrams of the circuits are below
above for the Form-A outputs with:
a) optional voltage monitor
b) optional current monitor
c) with no monitoring

If Idc ~ 80mA, Cont Op x Ion

~#a ~#a otherwise Cont Op x Ioff -
I I If Idc ~ 1mA, Cont Op x Von
otherwise Cont Op x Voff
If Idc ~ 1mA, Cont Op x Von
~#b
otherwise Cont Op x Voff - ~#b Load

V Load V
~#c + ~#c +

a) Voltage with optional Voltage monitoring only Both voltage and current monitoring
current monitoring

If Idc ~ 80mA, Cont Op x Ion

~#a ~#a otherwise Cont Op x Ioff -
V V If Idc ~ 1mA, Cont Op x Von
otherwise Cont Op x Voff
If Idc ~ 80mA, Cont Op x Ion
~#b
otherwise Cont Op x Ioff - ~#b Load
I I
Load
~#c + ~#c +
b) Current with optional
voltage monitoring Current monitoring only Both voltage and current monitoring
(external jumper a-b is required)

827821A5.CDR
~#a

~#b -
Load
~#c +
c) No monitoring

Figure 3–12: FORM-A /SOLID STATE CONTACT FUNCTIONS

3-10 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.2 WIRING

The operation of voltage and current monitors is reflected with the corresponding FlexLogic™ operands (Cont Op # Von, Cont
Op # Voff, Cont Op # Ion, and Cont Op # Ioff) which can be used in protection, control and alarm logic. The typical application of
the voltage monitor is breaker trip circuit integrity monitoring; a typical application of the current monitor is seal-in of the
control command. Refer to the Digital Elements section of Chapter 5 for an example of how Form-A/SSR contacts can be
applied for breaker trip circuit integrity monitoring.
Relay contacts must be considered unsafe to touch when the unit is energized! If the relay contacts need to
be used for low voltage accessible applications, it is the customer’s responsibility to ensure proper insula-
WARNING
tion levels!
USE OF FORM-A/SSR OUTPUTS IN HIGH IMPEDANCE CIRCUITS

NOTE For Form-A/SSR output contacts internally equipped with a voltage measuring cIrcuit across the contact, the circuit
has an impedance that can cause a problem when used in conjunction with external high input impedance monitor-
ing equipment such as modern relay test set trigger circuits. These monitoring circuits may continue to read the
Form-A contact as being closed after it has closed and subsequently opened, when measured as an impedance.
3
The solution to this problem is to use the voltage measuring trigger input of the relay test set, and connect the
Form-A contact through a voltage-dropping resistor to a DC voltage source. If the 48 V DC output of the power sup-
ply is used as a source, a 500 Ω, 10 W resistor is appropriate. In this configuration, the voltage across either the
Form-A contact or the resistor can be used to monitor the state of the output.
Wherever a tilde “~” symbol appears, substitute with the slot position of the module; wherever a number
sign "#" appears, substitute the contact number
NOTE

When current monitoring is used to seal-in the Form-A/SSR contact outputs, the FlexLogic™ operand driv-
ing the contact output should be given a reset delay of 10 ms to prevent damage of the output contact (in
NOTE
situations when the element initiating the contact output is bouncing, at values in the region of the pickup
value).

Table 3–2: DIGITAL INPUT/OUTPUT MODULE ASSIGNMENTS

~6A MODULE ~6B MODULE ~6C MODULE ~6D MODULE
TERMINAL OUTPUT OR TERMINAL OUTPUT OR TERMINAL OUTPUT TERMINAL OUTPUT
ASSIGNMENT INPUT ASSIGNMENT INPUT ASSIGNMENT ASSIGNMENT
~1 Form-A ~1 Form-A ~1 Form-C ~1a, ~1c 2 Inputs
~2 Form-A ~2 Form-A ~2 Form-C ~2a, ~2c 2 Inputs
~3 Form-C ~3 Form-C ~3 Form-C ~3a, ~3c 2 Inputs
~4 Form-C ~4 Form-C ~4 Form-C ~4a, ~4c 2 Inputs
~5a, ~5c 2 Inputs ~5 Form-C ~5 Form-C ~5a, ~5c 2 Inputs
~6a, ~6c 2 Inputs ~6 Form-C ~6 Form-C ~6a, ~6c 2 Inputs
~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7 Form-C ~7a, ~7c 2 Inputs
~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8 Form-C ~8a, ~8c 2 Inputs

~6E MODULE ~6F MODULE ~6G MODULE ~6H MODULE

TERMINAL OUTPUT OR TERMINAL OUTPUT TERMINAL OUTPUT OR TERMINAL OUTPUT OR
ASSIGNMENT INPUT ASSIGNMENT ASSIGNMENT INPUT ASSIGNMENT INPUT
~1 Form-C ~1 Fast Form-C ~1 Form-A ~1 Form-A
~2 Form-C ~2 Fast Form-C ~2 Form-A ~2 Form-A
~3 Form-C ~3 Fast Form-C ~3 Form-A ~3 Form-A
~4 Form-C ~4 Fast Form-C ~4 Form-A ~4 Form-A
~5a, ~5c 2 Inputs ~5 Fast Form-C ~5a, ~5c 2 Inputs ~5 Form-A
~6a, ~6c 2 Inputs ~6 Fast Form-C ~6a, ~6c 2 Inputs ~6 Form-A
~7a, ~7c 2 Inputs ~7 Fast Form-C ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs
~8a, ~8c 2 Inputs ~8 Fast Form-C ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs

GE Multilin B30 Bus Differential Relay 3-11

 3.2 WIRING 3 HARDWARE

~6K MODULE ~6L MODULE ~6M MODULE ~6N MODULE

TERMINAL OUTPUT TERMINAL OUTPUT OR TERMINAL OUTPUT OR TERMINAL OUTPUT OR
ASSIGNMENT ASSIGNMENT INPUT ASSIGNMENT INPUT ASSIGNMENT INPUT
~1 Form-C ~1 Form-A ~1 Form-A ~1 Form-A
~2 Form-C ~2 Form-A ~2 Form-A ~2 Form-A
~3 Form-C ~3 Form-C ~3 Form-C ~3 Form-A
~4 Form-C ~4 Form-C ~4 Form-C ~4 Form-A
~5 Fast Form-C ~5a, ~5c 2 Inputs ~5 Form-C ~5a, ~5c 2 Inputs
~6 Fast Form-C ~6a, ~6c 2 Inputs ~6 Form-C ~6a, ~6c 2 Inputs
~7 Fast Form-C ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs
~8 Fast Form-C ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs

3
~6P MODULE ~6R MODULE ~6S MODULE ~6T MODULE
TERMINAL OUTPUT OR TERMINAL OUTPUT OR TERMINAL OUTPUT OR TERMINAL OUTPUT OR
ASSIGNMENT INPUT ASSIGNMENT INPUT ASSIGNMENT INPUT ASSIGNMENT INPUT
~1 Form-A ~1 Form-A ~1 Form-A ~1 Form-A
~2 Form-A ~2 Form-A ~2 Form-A ~2 Form-A
~3 Form-A ~3 Form-C ~3 Form-C ~3 Form-A
~4 Form-A ~4 Form-C ~4 Form-C ~4 Form-A
~5 Form-A ~5a, ~5c 2 Inputs ~5 Form-C ~5a, ~5c 2 Inputs
~6 Form-A ~6a, ~6c 2 Inputs ~6 Form-C ~6a, ~6c 2 Inputs
~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs
~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs

~6U MODULE ~67 MODULE ~4A MODULE ~4B MODULE

TERMINAL OUTPUT OR TERMINAL OUTPUT TERMINAL OUTPUT TERMINAL OUTPUT
ASSIGNMENT INPUT ASSIGNMENT ASSIGNMENT ASSIGNMENT
~1 Form-A ~1 Form-A ~1 Not Used ~1 Not Used
~2 Form-A ~2 Form-A ~2 Solid-State ~2 Solid-State
~3 Form-A ~3 Form-A ~3 Not Used ~3 Not Used
~4 Form-A ~4 Form-A ~4 Solid-State ~4 Solid-State
~5 Form-A ~5 Form-A ~5 Not Used ~5 Not Used
~6 Form-A ~6 Form-A ~6 Solid-State ~6 Solid-State
~7a, ~7c 2 Inputs ~7 Form-A ~7 Not Used ~7 Not Used
~8a, ~8c 2 Inputs ~8 Form-A ~8 Solid-State ~8 Solid-State

~4C MODULE ~4D MODULE ~4L MODULE

TERMINAL OUTPUT TERMINAL OUTPUT TERMINAL OUTPUT
ASSIGNMENT ASSIGNMENT ASSIGNMENT
~1 Not Used ~1a, ~1c 2 Inputs ~1 2 Outputs
~2 Solid-State ~2a, ~2c 2 Inputs ~2 2 Outputs
~3 Not Used ~3a, ~3c 2 Inputs ~3 2 Outputs
~4 Solid-State ~4a, ~4c 2 Inputs ~4 2 Outputs
~5 Not Used ~5a, ~5c 2 Inputs ~5 2 Outputs
~6 Solid-State ~6a, ~6c 2 Inputs ~6 2 Outputs
~7 Not Used ~7a, ~7c 2 Inputs ~7 2 Outputs
~8 Solid-State ~8a, ~8c 2 Inputs ~8 Not Used

3-12 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.2 WIRING

1a 1b 1c Not Used ~1 1a 1b 1c Not Used ~1 1a 1b 1c Not Used ~1 ~ 1a CONTACT IN ~ 1a ~ 1a

4A

4D
4B

4C

4L
1
~ 2a ~ 2a ~ 2a V ~ 1b COMMON ~ 1b ~ 1b 2
I ~ 1c CONTACT IN ~ 1c ~ 1c
~ 2b ~2 ~ 2b ~2 ~ 2b I ~2 ~ 2a CONTACT IN ~ 2a ~ 2a 3
V ~ 2b COMMON ~ 2b ~ 2b 4
~ 2c ~ 2c ~ 2c ~ 2c CONTACT IN ~ 2c ~ 2c
3a 3b 3c Not Used ~3 3a 3b 3c Not Used ~3 3a 3b 3c Not Used ~3 ~ 3a CONTACT IN ~ 3a ~ 3a 5
~ 4a ~ 4a ~ 4a V ~ 3b COMMON ~ 3b ~ 3b 6
I ~ 3c CONTACT IN ~ 3c ~ 3c
~ 4b ~4 ~ 4b ~4 ~ 4b I ~4 ~ 4a CONTACT IN ~ 4a ~ 4a 7
V ~ 4b COMMON ~ 4b ~ 4b 8
~ 4c ~ 4c ~ 4c ~ 4c CONTACT IN ~ 4c ~ 4c
5a 5b 5c Not Used ~5 5a 5b 5c Not Used ~5 5a 5b 5c Not Used ~5 ~ 5a CONTACT IN ~ 5a ~ 5a 9
~ 6a ~ 6a ~ 6a V ~ 5b COMMON ~ 5b ~ 5b 10
I ~ 5c CONTACT IN ~ 5c ~ 5c
~ 6b ~6 ~ 6b ~6 ~ 6b I ~6 ~ 6a CONTACT IN ~ 6a ~ 6a 11
V ~ 6b COMMON ~ 6b ~ 6b 12
~ 6c ~ 6c ~ 6c ~ 6c CONTACT IN ~ 6c ~ 6c
7a 7b 7c Not Used ~7 7a 7b 7c Not Used ~7 7a 7b 7c Not Used ~7 ~ 7a CONTACT IN ~ 7a ~ 7a 13
DIGITAL I/O

DIGITAL I/O

DIGITAL I/O

DIGITAL I/O

DIGITAL I/O
~ 8a ~ 8a ~ 8a V ~ 7b COMMON ~ 7b ~ 7b 14

3
I ~ 7c CONTACT IN ~ 7c ~ 7c
~ 8b ~8 ~ 8b ~8 ~ 8b I ~8 ~ 8a CONTACT IN ~ 8a ~ 8a
V Not
~ 8b COMMON ~ 8b ~ 8b
~ 8c ~ 8c ~ 8c Used
~ 8c CONTACT IN ~ 8c ~ 8c

~ 1a ~ 5a CONTACT IN ~ 5a DIGITAL I/O 6A I ~ 1a ~ 7a CONTACT IN ~ 7a DIGITAL I/O 6B I ~ 1a

67

~ 1b ~1 ~ 5c CONTACT IN ~ 5c ~1 ~ 1b ~ 7c CONTACT IN ~ 7c ~1 ~ 1b
V V
~ 1c ~ 6a CONTACT IN ~ 6a ~ 1c ~ 8a CONTACT IN ~ 8a ~ 1c
~ 2a ~ 6c CONTACT IN ~ 6c I ~ 2a ~ 8c CONTACT IN ~ 8c I ~ 2a
~ 2b ~2 ~ 5b COMMON ~ 5b ~2 ~ 2b ~ 7b COMMON ~ 7b ~2 ~ 2b
V V
~ 2c ~ 2c ~ 2c
~ 7a CONTACT IN ~ 7a ~ 8b SURGE
~ 3a ~ 3a ~ 3a
~ 7c CONTACT IN ~ 7c
~ 3b ~3 ~3 ~ 3b ~3 ~ 3b
~ 8a CONTACT IN ~ 8a
~ 3c ~ 3c ~ 3c
~ 8c CONTACT IN ~ 8c
~ 4a ~ 4a ~ 4a
~ 7b COMMON ~ 7b
~ 4b ~4 ~4 ~ 4b ~4 ~ 4b
~ 4c ~ 8b SURGE ~ 4c ~ 4c
~ 5a ~ 5a
~ 5b ~5 ~5 ~ 5b
~ 5c ~ 5c
~ 6a ~ 6a
~ 6b ~6 ~6 ~ 6b
~ 6c ~ 6c
~ 7a
~ 7b ~7
DIGITAL I/O

~ 7c
~ 8b ~8
~ 8c
~ 8a SURGE

~ 1a ~ 1a CONTACT IN ~ 1a ~ 5a CONTACT IN ~ 5a DIGITAL I/O 6E ~ 1a ~ 1a

6D
6C

6F
~ 1b ~1 ~ 1c CONTACT IN ~ 1c ~ 5c CONTACT IN ~ 5c ~1 ~ 1b ~ 1b ~1
~ 1c ~ 2a CONTACT IN ~ 2a ~ 6a CONTACT IN ~ 6a ~ 1c ~ 1c
~ 2a ~ 2c CONTACT IN ~ 2c ~ 6c CONTACT IN ~ 6c ~ 2a ~ 2a
~ 2b ~2 ~ 1b COMMON ~ 1b ~ 5b COMMON ~ 5b ~2 ~ 2b ~ 2b ~2
~ 2c ~ 2c ~ 2c
~ 3a CONTACT IN ~ 3a ~ 7a CONTACT IN ~ 7a
~ 3a ~ 3a ~ 3a
~ 3c CONTACT IN ~ 3c ~ 7c CONTACT IN ~ 7c
~ 3b ~3 ~3 ~ 3b ~ 3b ~3
~ 4a CONTACT IN ~ 4a ~ 8a CONTACT IN ~ 8a
~ 3c ~ 3c ~ 3c
~ 4c CONTACT IN ~ 4c ~ 8c CONTACT IN ~ 8c
~ 4a ~ 4a ~ 4a
~ 3b COMMON ~ 3b ~ 7b COMMON ~ 7b
~ 4b ~4 ~4 ~ 4b ~ 4b ~4
~ 4c ~ 5a CONTACT IN ~ 5a ~ 8b SURGE ~ 4c ~ 4c
~ 5a ~ 5c CONTACT IN ~ 5c ~ 5a
~ 5b ~5 ~ 6a CONTACT IN ~ 6a ~ 5b ~5
~ 5c ~ 6c CONTACT IN ~ 6c ~ 5c
~ 6a ~ 5b COMMON ~ 5b ~ 6a
~ 6b ~6 ~ 6b ~6
~ 7a CONTACT IN ~ 7a
~ 6c ~ 6c
DIGITAL I/O

~ 7c CONTACT IN ~ 7c
~ 7a ~ 7a
~ 8a CONTACT IN ~ 8a
DIGITAL I/O

DIGITAL I/O
~ 7b ~7 ~ 7b ~7
~ 8c CONTACT IN ~ 8c
~ 7c ~ 7c
~ 7b COMMON ~ 7b
~ 8a ~ 8a
~ 8b SURGE
~ 8b ~8 ~ 8b ~8
~ 8c ~ 8c

~ 5a CONTACT IN ~ 5a DIGITAL I/O 6G I ~ 1a ~ 7a CONTACT IN ~ 7a DIGITAL I/O 6H I ~ 1a

~ 5c CONTACT IN ~ 5c ~1 ~ 1b ~ 7c CONTACT IN ~ 7c ~1 ~ 1b
V V
~ 6a CONTACT IN ~ 6a ~ 1c ~ 8a CONTACT IN ~ 8a ~ 1c
~ 6c CONTACT IN ~ 6c I ~ 2a ~ 8c CONTACT IN ~ 8c I ~ 2a
~ 5b COMMON ~ 5b ~2 V
~ 2b ~ 7b COMMON ~ 7b ~2 ~ 2b
V
~ 2c ~ 2c
~ 7a CONTACT IN ~ 7a I
~ 8b SURGE
I
~ 3a ~ 3a
~ 7c CONTACT IN ~ 7c
~3 ~ 3b ~3 ~ 3b
~ 8a CONTACT IN ~ 8a V V
~ 3c ~ 3c
~ 8c CONTACT IN ~ 8c I ~ 4a I ~ 4a
~ 7b COMMON ~ 7b
~4 V
~ 4b ~4 V
~ 4b
~ 8b SURGE ~ 4c ~ 4c
I ~ 5a
~5 V
~ 5b
~ 5c
I ~ 6a
~6 V
~ 6b
827719D2-X1.CDR ~ 6c

Figure 3–13: DIGITAL INPUT/OUTPUT MODULE WIRING (1 of 2)

GE Multilin B30 Bus Differential Relay 3-13

 3.2 WIRING 3 HARDWARE

~ 1a ~ 5a CONTACT IN ~ 5a DIGITAL I/O 6L V ~ 1a ~ 7a CONTACT IN ~ 7a DIGITAL I/O 6M V ~ 1a

6K
I I
~ 1b ~1 ~ 5c CONTACT IN ~ 5c ~1 ~ 1b ~ 7c CONTACT IN ~ 7c ~1 ~ 1b
~ 1c ~ 6a CONTACT IN ~ 6a ~ 1c ~ 8a CONTACT IN ~ 8a ~ 1c
~ 2a ~ 6c CONTACT IN ~ 6c V ~ 2a ~ 8c CONTACT IN ~ 8c V ~ 2a
I I
~ 2b ~2 ~ 5b COMMON ~ 5b ~2 ~ 2b ~ 7b COMMON ~ 7b ~2 ~ 2b
~ 2c ~ 2c ~ 2c
~ 7a CONTACT IN ~ 7a ~ 8b SURGE
~ 3a ~ 3a ~ 3a
~ 7c CONTACT IN ~ 7c
~ 3b ~3 ~3 ~ 3b ~3 ~ 3b
~ 8a CONTACT IN ~ 8a
~ 3c ~ 3c ~ 3c
~ 8c CONTACT IN ~ 8c
~ 4a ~ 4a ~ 4a
~ 7b COMMON ~ 7b
~ 4b ~4 ~4 ~ 4b ~4 ~ 4b
~ 4c ~ 8b SURGE ~ 4c ~ 4c
~ 5a ~ 5a
~ 5b ~5 ~5 ~ 5b
~ 5c ~ 5c
~ 6a ~ 6a
~ 6b ~6 ~6 ~ 6b
~ 6c ~ 6c
~ 7a

3
DIGITAL I/O

~ 7b ~7
~ 7c
~ 8a
~ 8b ~8
~ 8c

~ 5a CONTACT IN ~ 5a DIGITAL I/O 6N V ~ 1a ~ 7a CONTACT IN ~ 7a DIGITAL I/O 6P V ~ 1a

I I
~ 5c CONTACT IN ~ 5c ~1 ~ 1b ~ 7c CONTACT IN ~ 7c ~1 ~ 1b
~ 6a CONTACT IN ~ 6a ~ 1c ~ 8a CONTACT IN ~ 8a ~ 1c
~ 6c CONTACT IN ~ 6c V ~ 2a ~ 8c CONTACT IN ~ 8c V ~ 2a
I I
~ 5b COMMON ~ 5b ~2 ~ 2b ~ 7b COMMON ~ 7b ~2 ~ 2b
~ 2c ~ 2c
~ 7a CONTACT IN ~ 7a ~ 8b SURGE
V ~ 3a V ~ 3a
~ 7c CONTACT IN ~ 7c I I
~3 ~ 3b ~3 ~ 3b
~ 8a CONTACT IN ~ 8a
~ 3c ~ 3c
~ 8c CONTACT IN ~ 8c
V ~ 4a V ~ 4a
~ 7b COMMON ~ 7b I I
~4 ~ 4b ~4 ~ 4b
~ 8b SURGE ~ 4c ~ 4c
V ~ 5a
I
~5 ~ 5b
~ 5c
V ~ 6a
I
~6 ~ 6b
~ 6c

~ 5a CONTACT IN ~ 5a DIGITAL I/O 6R ~ 1a ~ 7a CONTACT IN ~ 7a DIGITAL I/O 6S ~ 1a

~ 5c CONTACT IN ~ 5c ~1 ~ 1b ~ 7c CONTACT IN ~ 7c ~1 ~ 1b
~ 6a CONTACT IN ~ 6a ~ 1c ~ 8a CONTACT IN ~ 8a ~ 1c
~ 6c CONTACT IN ~ 6c ~ 2a ~ 8c CONTACT IN ~ 8c ~ 2a
~ 5b COMMON ~ 5b ~2 ~ 2b ~ 7b COMMON ~ 7b ~2 ~ 2b
~ 2c ~ 2c
~ 7a CONTACT IN ~ 7a ~ 8b SURGE
~ 3a ~ 3a
~ 7c CONTACT IN ~ 7c
~3 ~ 3b ~3 ~ 3b
~ 8a CONTACT IN ~ 8a
~ 3c ~ 3c
~ 8c CONTACT IN ~ 8c
~ 4a ~ 4a
~ 7b COMMON ~ 7b
~4 ~ 4b ~4 ~ 4b
~ 8b SURGE ~ 4c ~ 4c
~ 5a
~5 ~ 5b
~ 5c
~ 6a
~6 ~ 6b
~ 6c

~ 5a CONTACT IN ~ 5a DIGITAL I/O 6T ~ 1a ~ 7a CONTACT IN ~ 7a DIGITAL I/O 6U ~ 1a

~ 5c CONTACT IN ~ 5c ~1 ~ 1b ~ 7c CONTACT IN ~ 7c ~1 ~ 1b
~ 6a CONTACT IN ~ 6a ~ 1c ~ 8a CONTACT IN ~ 8a ~ 1c
~ 6c CONTACT IN ~ 6c ~ 2a ~ 8c CONTACT IN ~ 8c ~ 2a
~ 5b COMMON ~ 5b ~2 ~ 2b ~ 7b COMMON ~ 7b ~2 ~ 2b
~ 2c ~ 2c
~ 7a CONTACT IN ~ 7a ~ 8b SURGE
~ 3a ~ 3a
~ 7c CONTACT IN ~ 7c
~3 ~ 3b ~3 ~ 3b
~ 8a CONTACT IN ~ 8a
~ 3c ~ 3c
~ 8c CONTACT IN ~ 8c
~ 4a ~ 4a
~ 7b COMMON ~ 7b
~4 ~ 4b ~4 ~ 4b
~ 8b SURGE ~ 4c ~ 4c
~ 5a
~5 ~ 5b
~ 5c
~ 6a
~6 ~ 6b
~ 6c

827719D2-X1.CDR

Figure 3–14: DIGITAL INPUT/OUTPUT MODULE WIRING (2 of 2)

CORRECT POLARITY MUST BE OBSERVED FOR ALL CONTACT INPUT AND SOLID STATE OUTPUT CON-
NECTIONS FOR PROPER FUNCTIONALITY.
CAUTION

3-14 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.2 WIRING

CONTACT INPUTS:
A dry contact has one side connected to Terminal B3b. This is the positive 48 V DC voltage rail supplied by the power sup-
ply module. The other side of the dry contact is connected to the required contact input terminal. Each contact input group
has its own common (negative) terminal which must be connected to the DC negative terminal (B3a) of the power supply
module. When a dry contact closes, a current of 1 to 3 mA will flow through the associated circuit.
A wet contact has one side connected to the positive terminal of an external DC power supply. The other side of this contact
is connected to the required contact input terminal. In addition, the negative side of the external source must be connected
to the relay common (negative) terminal of each contact input group. The maximum external source voltage for this
arrangement is 300 V DC.
The voltage threshold at which each group of four contact inputs will detect a closed contact input is programmable as
17 V DC for 24 V sources, 33 V DC for 48 V sources, 84 V DC for 110 to 125 V sources, and 166 V DC for 250 V sources.

(Dry) DIGITAL I/O

~ 7a + CONTACT IN
6B
~ 7a
(Wet) DIGITAL I/O 6B
~ 7a + CONTACT IN ~ 7a
3
~ 7c + CONTACT IN ~ 7c ~ 7c + CONTACT IN ~ 7c
~ 8a + CONTACT IN ~ 8a ~ 8a + CONTACT IN ~ 8a
~ 8c + CONTACT IN ~ 8c 24-250V ~ 8c + CONTACT IN ~ 8c
~ 7b - COMMON ~ 7b ~ 7b - COMMON ~ 7b
~ 8b SURGE ~ 8b SURGE

B 1b
B 1a CRITICAL
FAILURE
B 2b
POWER SUPPLY

B 3a - 48 VDC
B 3b + OUTPUT
B 5b HI+
CONTROL
B 6b LO+
POWER
B 6a -
B 8a SURGE
B 8b FILTER

827741A4.CDR

Figure 3–15: DRY AND WET CONTACT INPUT CONNECTIONS

Wherever a tilde “~” symbol appears, substitute with the Slot Position of the module.

NOTE

CONTACT OUTPUTS:
Contact outputs may be ordered as Form-A or Form-C. The Form A contacts may be connected for external circuit supervi-
sion. These contacts are provided with voltage and current monitoring circuits used to detect the loss of DC voltage in the
circuit, and the presence of DC current flowing through the contacts when the Form-A contact closes. If enabled, the cur-
rent monitoring can be used as a seal-in signal to ensure that the Form-A contact does not attempt to break the energized
inductive coil circuit and weld the output contacts.
There is no provision in the relay to detect a DC ground fault on 48 V DC control power external output. We
recommend using an external DC supply.
NOTE

GE Multilin B30 Bus Differential Relay 3-15

 3.2 WIRING 3 HARDWARE

USE OF CONTACT INPUTS WITH AUTO-BURNISHING:

The contact inputs sense a change of the state of the external device contact based on the measured current. When exter-
nal devices are located in a harsh industrial environment (either outdoor or indoor), their contacts can be exposed to vari-
ous types of contamination. Normally, there is a thin film of insulating sulfidation, oxidation, or contaminates on the surface
of the contacts, sometimes making it difficult or impossible to detect a change of the state. This film must be removed to
establish circuit continuity – an impulse of higher than normal current can accomplish this.
The contact inputs with auto-burnish create a high current impulse when the threshold is reached to burn off this oxidation
layer as a maintenance to the contacts. Afterwards the contact input current is reduced to a steady-state current. The
impulse will have a 5 second delay after a contact input changes state.
current

50 to 70 mA

3 mA
time

25 to 50 ms 842749A1.CDR

Figure 3–16: CURRENT THROUGH CONTACT INPUTS WITH AUTO-BURNISHING

Regular contact inputs limit current to less than 3 mA to reduce station battery burden. In contrast, contact inputs with auto-
burnishing allow currents up to 50 to 70 mA at the first instance when the change of state was sensed. Then, within 25 to
50 ms, this current is slowly reduced to 3 mA as indicated above. The 50 to 70 mA peak current burns any film on the con-
tacts, allowing for proper sensing of state changes. If the external device contact is bouncing, the auto-burnishing starts
when external device contact bouncing is over.
Another important difference between the auto-burnishing input module and the regular input modules is that only two con-
tact inputs have common ground, as opposed to four contact inputs sharing one common ground (refer to the Digital Input/
Output Module Wiring diagrams). This is beneficial when connecting contact inputs to separate voltage sources. Conse-
quently, the threshold voltage setting is also defined per group of two contact inputs.
The auto-burnish feature can be disabled or enabled using the DIP switches found on each daughter card. There is a DIP
switch for each contact, for a total of 16 inputs.

CONTACT INPUT 1 AUTO-BURNISH = OFF

CONTACT INPUT 2 AUTO-BURNISH = OFF

CONTACT INPUT 1 AUTO-BURNISH = ON

CONTACT INPUT 2 AUTO-BURNISH = OFF

CONTACT INPUT 1 AUTO-BURNISH = OFF

CONTACT INPUT 2 AUTO-BURNISH = ON

CONTACT INPUT 1 AUTO-BURNISH = ON

CONTACT INPUT 2 AUTO-BURNISH = ON

842751A1.CDR

Figure 3–17: AUTO-BURNISH DIP SWITCHES

The auto-burnish circuitry has an internal fuse for safety purposes. During regular maintenance, the auto-burnish
functionality can be checked using an oscilloscope.
NOTE

3-16 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.2 WIRING

3.2.6 TRANSDUCER INPUTS/OUTPUTS

Transducer input modules can receive input signals from external dcmA output transducers (dcmA In) or resistance tem-
perature detectors (RTD). Hardware and software is provided to receive signals from these external transducers and con-
vert these signals into a digital format for use as required.
Transducer output modules provide DC current outputs in several standard dcmA ranges. Software is provided to configure
virtually any analog quantity used in the relay to drive the analog outputs.
Every transducer input/output module has a total of 24 terminal connections. These connections are arranged as three ter-
minals per row with a total of eight rows. A given row may be used for either inputs or outputs, with terminals in column "a"
having positive polarity and terminals in column "c" having negative polarity. Since an entire row is used for a single input/
output channel, the name of the channel is assigned using the module slot position and row number.
Each module also requires that a connection from an external ground bus be made to Terminal 8b. The current outputs
require a twisted-pair shielded cable, where the shield is grounded at one end only. The figure below illustrates the trans- 3
ducer module types (5A, 5C, 5D, 5E, and 5F) and channel arrangements that may be ordered for the relay.
Wherever a tilde “~” symbol appears, substitute with the Slot Position of the module.

NOTE

827831AB-X1.CDR

Figure 3–18: TRANSDUCER INPUT/OUTPUT MODULE WIRING

GE Multilin B30 Bus Differential Relay 3-17

 3.2 WIRING 3 HARDWARE

3.2.7 RS232 FACEPLATE PORT

A 9-pin RS232C serial port is located on the relay’s faceplate for programming with a portable (personal) computer. All that
is required to use this interface is a personal computer running the EnerVista UR Setup software provided with the relay.
Cabling for the RS232 port is shown in the following figure for both 9 pin and 25 pin connectors.
The baud rate for this port is fixed at 19200 bps.

NOTE

Figure 3–19: RS232 FACEPLATE PORT CONNECTION

3.2.8 CPU COMMUNICATION PORTS

a) OPTIONS
In addition to the RS232 port on the faceplate, the relay provides the user with two additional communication port(s)
depending on the CPU module installed.
The CPU modules do not require a surge ground connection.

NOTE

CPU TYPE COM1 COM2

9E RS485 RS485
9G 10Base-F and 10Base-T RS485
9H Redundant 10Base-F RS485
9J 10Base-FX RS485
9K Redundant 10Base-FX RS485
9L 100Base-FX RS485
9M Redundant 100Base-FX RS485
9N 10/100Base-T RS485
9P 100Base-FX RS485
9R Redundant 100Base-FX RS485

3-18 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.2 WIRING

827831AF-X6.CDR

Figure 3–20: CPU MODULE COMMUNICATIONS WIRING

b) RS485 PORTS
RS485 data transmission and reception are accomplished over a single twisted pair with transmit and receive data alternat-
ing over the same two wires. Through the use of these port(s), continuous monitoring and control from a remote computer,
SCADA system or PLC is possible.
To minimize errors from noise, the use of shielded twisted pair wire is recommended. Correct polarity must also be
observed. For instance, the relays must be connected with all RS485 “+” terminals connected together, and all RS485 “–”
terminals connected together. The COM terminal should be connected to the common wire inside the shield, when pro-
vided. To avoid loop currents, the shield should be grounded at one point only. Each relay should also be daisy chained to
the next one in the link. A maximum of 32 relays can be connected in this manner without exceeding driver capability. For
larger systems, additional serial channels must be added. It is also possible to use commercially available repeaters to
increase the number of relays on a single channel to more than 32. Star or stub connections should be avoided entirely.
Lightning strikes and ground surge currents can cause large momentary voltage differences between remote ends of the
communication link. For this reason, surge protection devices are internally provided at both communication ports. An iso-
lated power supply with an optocoupled data interface also acts to reduce noise coupling. To ensure maximum reliability, all
equipment should have similar transient protection devices installed.
Both ends of the RS485 circuit should also be terminated with an impedance as shown below.

GE Multilin B30 Bus Differential Relay 3-19

 3.2 WIRING 3 HARDWARE

Figure 3–21: RS485 SERIAL CONNECTION

c) 10BASE-FL AND 100BASE-FX FIBER OPTIC PORTS

ENSURE THE DUST COVERS ARE INSTALLED WHEN THE FIBER IS NOT IN USE. DIRTY OR SCRATCHED
CONNECTORS CAN LEAD TO HIGH LOSSES ON A FIBER LINK.
CAUTION
OBSERVING ANY FIBER TRANSMITTER OUTPUT MAY CAUSE INJURY TO THE EYE.

CAUTION

The fiber optic communication ports allow for fast and efficient communications between relays at 10 or 100Mbps. Optical
fiber may be connected to the relay supporting a wavelength of 820 nm in multi-mode or 1310 nm in multi-mode and single-
mode. The 10 Mbps rate is available for CPU modules 9G and 9H; 100Mbps is available for modules 9J, 9K, 9L, and 9M.
The 9H, 9K and 9M modules have a second pair of identical optical fiber transmitter and receiver for redundancy.
The optical fiber sizes supported include 50/125 µm, 62.5/125 µm and 100/140 µm for 10 Mbps. The fiber optic port is
designed such that the response times will not vary for any core that is 100 µm or less in diameter, 62.5 µm for 100 Mbps.
For optical power budgeting, splices are required every 1 km for the transmitter/receiver pair. When splicing optical fibers,
the diameter and numerical aperture of each fiber must be the same. In order to engage or disengage the ST type connec-
tor, only a quarter turn of the coupling is required.

3-20 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.2 WIRING

3.2.9 IRIG-B

IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices within
1 millisecond. The IRIG time code formats are serial, width-modulated codes which can be either DC level shifted or ampli-
tude modulated (AM). Third party equipment is available for generating the IRIG-B signal; this equipment may use a GPS
satellite system to obtain the time reference so that devices at different geographic locations can also be synchronized.

GPS SATELLITE SYSTEM

GPS CONNECTION
OPTIONAL
RELAY 3
4B IRIG-B(+)
4A IRIG-B(-)
IRIG-B
RG58/59 COAXIAL CABLE RECEIVER
TIME CODE
GENERATOR + BNC (IN)
(DC SHIFT OR
AMPLITUDE MODULATED
SIGNAL CAN BE USED)
-
BNC (OUT) REPEATER

TO OTHER DEVICES
(DC-SHIFT ONLY)
827756A5.CDR

Figure 3–22: IRIG-B CONNECTION

The IRIG-B repeater provides an amplified DC-shift IRIG-B signal to other equipment. By using one IRIG-B serial connec-
tion, several UR-series relays can be synchronized. The IRIG-B repeater has a bypass function to maintain the time signal
even when a relay in the series is powered down.

Figure 3–23: IRIG-B REPEATER

GE Multilin B30 Bus Differential Relay 3-21

 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS 3 HARDWARE

3.3DIRECT INPUT/OUTPUT COMMUNICATIONS 3.3.1 DESCRIPTION

The B30 direct inputs/outputs feature makes use of the Type 7 series of communications modules. These modules are also
used by the L90 Line Differential Relay for inter-relay communications. The direct input/output feature uses the communica-
tions channel(s) provided by these modules to exchange digital state information between relays. This feature is available
on all UR-series relay models except for the L90 Line Differential relay.
The communications channels are normally connected in a ring configuration as shown below. The transmitter of one mod-
ule is connected to the receiver of the next module. The transmitter of this second module is then connected to the receiver
of the next module in the ring. This is continued to form a communications ring. The figure below illustrates a ring of four
UR-series relays with the following connections: UR1-Tx to UR2-Rx, UR2-Tx to UR3-Rx, UR3-Tx to UR4-Rx, and UR4-Tx
to UR1-Rx. A maximum of sixteen (16) UR-series relays can be connected in a single ring

Tx

3 UR #1
Rx

Tx
UR #2
Rx

Tx
UR #3
Rx

Tx
UR #4
Rx
842006A1.CDR

Figure 3–24: DIRECT INPUT/OUTPUT SINGLE CHANNEL CONNECTION

The interconnection for dual-channel Type 7 communications modules is shown below. Two channel modules allow for a
redundant ring configuration. That is, two rings can be created to provide an additional independent data path. The required
connections are: UR1-Tx1 to UR2-Rx1, UR2-Tx1 to UR3-Rx1, UR3-Tx1 to UR4-Rx1, and UR4-Tx1 to UR1-Rx1 for the first
ring; and UR1-Tx2 to UR4-Rx2, UR4-Tx2 to UR3-Rx2, UR3-Tx2 to UR2-Rx2, and UR2-Tx2 to UR1-Rx2 for the second
ring.
Tx1

Rx1
UR #1
Tx2

Rx2

Tx1

Rx1
UR #2
Tx2

Rx2

Tx1

Rx1
UR #3
Tx2

Rx2

Tx1

Rx1
UR #4
Tx2

Rx2
842007A1.CDR

Figure 3–25: DIRECT INPUT/OUTPUT DUAL CHANNEL CONNECTION

The following diagram shows the connection for three UR-series relays using two independent communication channels.
UR1 and UR3 have single Type 7 communication modules; UR2 has a dual-channel module. The two communication
channels can be of different types, depending on the Type 7 modules used. To allow the direct input/output data to ‘cross-
over’ from Channel 1 to Channel 2 on UR2, the DIRECT I/O CHANNEL CROSSOVER setting should be “Enabled” on UR2. This
forces UR2 to forward messages received on Rx1 out Tx2, and messages received on Rx2 out Tx1.

3-22 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS

Tx
UR #1
Rx

Channel #1

Tx1

Rx1
UR #2
Tx2

Rx2

Channel #2

3
Tx
UR #3
Rx
842013A1.CDR

Figure 3–26: DIRECT INPUT/OUTPUT SINGLE/DUAL CHANNEL COMBINATION CONNECTION

The interconnection requirements are described in further detail in this section for each specific variation of Type 7 commu-
nications module. These modules are listed in the following table. All fiber modules use ST type connectors.

Table 3–3: CHANNEL COMMUNICATION OPTIONS

MODULE SPECIFICATION
2A C37.94SM, 1300 nm, single-mode, ELED, 1 channel single-mode
2B C37.94SM, 1300 nm, single-mode, ELED, 2 channel single-mode
7A 820 nm, multi-mode, LED, 1 channel
7B 1300 nm, multi-mode, LED, 1 channel
7C 1300 nm, single-mode, ELED, 1 channel
7D 1300 nm, single-mode, LASER, 1 channel
7E Channel 1: G.703, Channel 2: 820 nm, multi-mode
7F Channel 1: G.703, Channel 2: 1300 nm, multi-mode
7G Channel 1: G.703, Channel 2: 1300 nm, single-mode ELED
7H 820 nm, multi-mode, LED, 2 channels
7I 1300 nm, multi-mode, LED, 2 channels
7J 1300 nm, single-mode, ELED, 2 channels
7K 1300 nm, single-mode, LASER, 2 channels
7L Channel 1: RS422, Channel 2: 820 nm, multi-mode, LED
7M Channel 1: RS422, Channel 2: 1300 nm, multi-mode, LED
7N Channel 1: RS422, Channel 2: 1300 nm, single-mode, ELED
7P Channel 1: RS422, Channel 2: 1300 nm, single-mode, LASER
7Q Channel 1: G.703, Channel 2: 1300 nm, single-mode, LASER
7R G.703, 1 channel
7S G.703, 2 channels
7T RS422, 1 channel
7W RS422, 2 channels
72 1550 nm, single-mode, LASER, 1 channel
73 1550 nm, single-mode, LASER, 2 channels
74 Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER
75 Channel 1 - G.703; Channel 2 - 1550 nm, single-mode, LASER
76 IEEE C37.94, 820 nm, multi-mode, LED, 1 channel
77 IEEE C37.94, 820 nm, multi-mode, LED, 2 channels

OBSERVING ANY FIBER TRANSMITTER OUTPUT MAY CAUSE INJURY TO THE EYE.
CAUTION

GE Multilin B30 Bus Differential Relay 3-23

 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS 3 HARDWARE

3.3.2 FIBER: LED AND ELED TRANSMITTERS

The following figure shows the configuration for the 7A, 7B, 7C, 7H, 7I, and 7J fiber-only modules.
Module: 7A / 7B / 7C 7H / 7I / 7J
Connection Location: Slot X Slot X

RX1 RX1

TX1 TX1

3
RX2

TX2

1 Channel 2 Channels 831719A2.CDR

Figure 3–27: LED AND ELED FIBER MODULES

3.3.3 FIBER-LASER TRANSMITTERS

The following figure shows the configuration for the 72, 73, 7D, and 7K fiber-laser module.

Module: 72/ 7D 73/ 7K

Connection Location: Slot X Slot X

TX1 TX1

RX1 RX1

TX2

RX2

1 Channel 2 Channels 831720A3.CDR

Figure 3–28: LASER FIBER MODULES

When using a LASER Interface, attenuators may be necessary to ensure that you do not exceed Maximum
Optical Input Power to the receiver.
WARNING

3-24 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS

3.3.4 G.703 INTERFACE

a) DESCRIPTION
The following figure shows the 64K ITU G.703 co-directional interface configuration.
The G.703 module is fixed at 64 kbps only. The SETTINGS PRODUCT SETUP DIRECT I/O DIRECT I/O DATA
RATE setting is not applicable to this module.
NOTE

AWG 24 twisted shielded pair is recommended for external connections, with the shield grounded only at one end. Con-
necting the shield to Pin X1a or X6a grounds the shield since these pins are internally connected to ground. Thus, if
Pin X1a or X6a is used, do not ground at the other end. This interface module is protected by surge suppression devices.

3
Shld. X 1a

7R
Tx – X 1b
G.703
CHANNEL 1
Rx – X 2a
Tx + X 2b
Rx + X 3a
SURGE X 3b
Shld. X 6a
Tx – X 6b
G.703
CHANNEL 2
Rx – X 7a
X 7b
COMM.

Tx +
Rx + X 8a
SURGE X 8b
831727A2-X1.CDR

Figure 3–29: G.703 INTERFACE CONFIGURATION

The following figure shows the typical pin interconnection between two G.703 interfaces. For the actual physical arrange-
ment of these pins, see the Rear Terminal Assignments section earlier in this chapter. All pin interconnections are to be
maintained for a connection to a multiplexer.
Shld. X 1a X 1a Shld.
7R

7R
Tx - X 1b X 1b Tx -
G.703 G.703
CHANNEL 1
Rx - X 2a X 2a Rx -
CHANNEL 1
Tx + X 2b X 2b Tx +
Rx + X 3a X 3a Rx +
SURGE X 3b X 3b SURGE
Shld. X 6a X 6a Shld.
Tx - X 6b X 6b Tx -
G.703 G.703
Rx - X 7a X 7a Rx -
COMM.

COMM.

CHANNEL 2 CHANNEL 2
Tx + X 7b X 7b Tx +
Rx + X 8a X 8a Rx +
SURGE X 8b X 8b SURGE
831727A2.CDR

Figure 3–30: TYPICAL PIN INTERCONNECTION BETWEEN TWO G.703 INTERFACES

Pin nomenclature may differ from one manufacturer to another. Therefore, it is not uncommon to see
pinouts numbered TxA, TxB, RxA and RxB. In such cases, it can be assumed that “A” is equivalent to “+”
NOTE
and “B” is equivalent to “–”.

b) G.703 SELECTION SWITCH PROCEDURES

1. Remove the G.703 module (7R or 7S):
The ejector/inserter clips located at the top and at the bottom of each module, must be pulled simultaneously in order
to release the module for removal. Before performing this action, control power must be removed from the relay.
The original location of the module should be recorded to help ensure that the same or replacement module is inserted
into the correct slot.
2. Remove the module cover screw.
3. Remove the top cover by sliding it towards the rear and then lift it upwards.
4. Set the Timing Selection Switches (Channel 1, Channel 2) to the desired timing modes.
5. Replace the top cover and the cover screw.

GE Multilin B30 Bus Differential Relay 3-25

 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS 3 HARDWARE

6. Re-insert the G.703 module Take care to ensure that the correct module type is inserted into the correct slot position.
The ejector/inserter clips located at the top and at the bottom of each module must be in the disengaged position as
the module is smoothly inserted into the slot. Once the clips have cleared the raised edge of the chassis, engage the
clips simultaneously. When the clips have locked into position, the module will be fully inserted.

Figure 3–31: G.703 TIMING SELECTION SWITCH SETTING

Table 3–4: G.703 TIMING SELECTIONS

SWITCHES FUNCTION
S1 OFF → Octet Timing Disabled
ON → Octet Timing 8 kHz
S5 and S6 S5 = OFF and S6 = OFF → Loop Timing Mode
S5 = ON and S6 = OFF → Internal Timing Mode
S5 = OFF and S6 = ON → Minimum Remote Loopback Mode
S5 = ON and S6 = ON → Dual Loopback Mode

c) OCTET TIMING (SWITCH S1)

If Octet Timing is enabled (ON), this 8 kHz signal will be asserted during the violation of Bit 8 (LSB) necessary for connect-
ing to higher order systems. When B30s are connected back to back, Octet Timing should be disabled (OFF).

d) TIMING MODES (SWITCHES S5 AND S6)

There are two timing modes for the G.703 module: internal timing mode and loop timing mode (default).
• Internal Timing Mode: The system clock is generated internally. Therefore, the G.703 timing selection should be in
the Internal Timing Mode for back-to-back (UR-to-UR) connections. For back-to-back connections, set for Octet Timing
(S1 = OFF) and Timing Mode = Internal Timing (S5 = ON and S6 = OFF).
• Loop Timing Mode: The system clock is derived from the received line signal. Therefore, the G.703 timing selection
should be in Loop Timing Mode for connections to higher order systems. For connection to a higher order system (UR-
to-multiplexer, factory defaults), set to Octet Timing (S1 = ON) and set Timing Mode = Loop Timing (S5 = OFF and S6
= OFF).

3-26 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS

The switch settings for the internal and loop timing modes are shown below:

842752A1.CDR

e) TEST MODES (SWITCHES S5 AND S6)

MINIMUM REMOTE LOOPBACK MODE: 3
In Minimum Remote Loopback mode, the multiplexer is enabled to return the data from the external interface without any
processing to assist in diagnosing G.703 Line Side problems irrespective of clock rate. Data enters from the G.703 inputs,
passes through the data stabilization latch which also restores the proper signal polarity, passes through the multiplexer
and then returns to the transmitter. The Differential Received Data is processed and passed to the G.703 Transmitter mod-
ule after which point the data is discarded. The G.703 Receiver module is fully functional and continues to process data and
passes it to the Differential Manchester Transmitter module. Since timing is returned as it is received, the timing source is
expected to be from the G.703 line side of the interface.

DMR = Differential Manchester Receiver

DMR G7X DMX = Differential Manchester Transmitter
G7X = G.703 Transmitter
G7R = G.703 Receiver

DMX G7R

DUAL LOOPBACK MODE:

In Dual Loopback Mode, the multiplexers are active and the functions of the circuit are divided into two with each receiver/
transmitter pair linked together to deconstruct and then reconstruct their respective signals. Differential Manchester data
enters the Differential Manchester Receiver module and then is returned to the Differential Manchester Transmitter module.
Likewise, G.703 data enters the G.703 Receiver module and is passed through to the G.703 Transmitter module to be
returned as G.703 data. Because of the complete split in the communications path and because, in each case, the clocks
are extracted and reconstructed with the outgoing data, in this mode there must be two independent sources of timing. One
source lies on the G.703 line side of the interface while the other lies on the Differential Manchester side of the interface.

DMR = Differential Manchester Receiver

DMR G7X DMX = Differential Manchester Transmitter
G7X = G.703 Transmitter
G7R = G.703 Receiver

DMX G7R

GE Multilin B30 Bus Differential Relay 3-27

 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS 3 HARDWARE

3.3.5 RS422 INTERFACE

a) DESCRIPTION
The following figure shows the RS422 2-terminal interface configuration at 64 kbps. AWG 24 twisted shielded pair is recom-
mended for external connections. This interface module is protected by surge suppression devices which optically isolated.
SHIELD TERMINATION
The shield pins (6a and 7b) are internally connected to the ground pin (8a). Proper shield termination is as follows:
Site 1: Terminate shield to pins 6a and/or 7b; Site 2: Terminate shield to ‘COM’ pin 2b.
The clock terminating impedance should match the impedance of the line.

W 3b Tx -

W7W
3
W 3a Rx -
RS422
W 2a Tx +
CHANNEL 1
W 4b Rx +
W 6a Shld.
W 5b Tx -
W 5a Rx -
RS422
W 4a Tx +
CHANNEL 2
W 6b Rx +
W 7b Shld.
W 7a +
CLOCK
W 8b -
W 2b com
W 8a SURGE

RS422.CDR
p/o 827831A6.CDR

Figure 3–32: RS422 INTERFACE CONFIGURATION

The following figure shows the typical pin interconnection between two RS422 interfaces. All pin interconnections are to be
maintained for a connection to a multiplexer.

Figure 3–33: TYPICAL PIN INTERCONNECTION BETWEEN TWO RS422 INTERFACES

b) TWO CHANNEL APPLICATIONS VIA MULTIPLEXERS

The RS422 Interface may be used for single or two channel applications over SONET/SDH and/or multiplexed systems.
When used in single channel applications, the RS422 interface links to higher order systems in a typical fashion observing
transmit (Tx), receive (Rx), and send timing (ST) connections. However, when used in two channel applications, certain cri-
teria must be followed since there is one clock input for the two RS422 channels. The system will function correctly if the
following connections are observed and your data module has a terminal timing feature. Terminal timing is a common fea-
ture to most synchronous data units that allows the module to accept timing from an external source. Using the terminal
timing feature, two channel applications can be achieved if these connections are followed: The send timing outputs from
the multiplexer (data module 1), will connect to the Clock inputs of the UR–RS422 interface in the usual fashion. In addition,
the send timing outputs of data module 1 will also be paralleled to the terminal timing inputs of data module 2. By using this
configuration, the timing for both data modules and both UR–RS422 channels will be derived from a single clock source. As
a result, data sampling for both of the UR–RS422 channels will be synchronized via the send timing leads on data module
1 as shown below. If the terminal timing feature is not available or this type of connection is not desired, the G.703 interface
is a viable option that does not impose timing restrictions.

3-28 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS

Data Module 1
Pin No. Signal Name
SD(A) - Send Data

7W
Tx1(+) W 2a
Tx1(-) W 3b SD(B) - Send Data
RS422
Rx1(+) W 4b RD(A) - Received Data
CHANNEL 1
Rx1(-) W 3a RD(B) - Received Data
Shld. W 6a RS(A) - Request to Send (RTS)
+ W 7a RS(B) - Request to Send (RTS)
CLOCK
- W 8b RT(A) - Receive Timing
Tx2(+) W 4a RT(B) - Receive Timing
Tx2(-) W 5b CS(A) - Clear To Send
RS422
Rx2(+) W 6b CS(B) - Clear To Send
CHANNEL 2
Local Loopback
L90 COMM.
Rx2(-) W 5a
Shld. W 7b Remote Loopback
com W 2b Signal Ground
SURGE W 8a ST(A) - Send Timing

3
ST(B) - Send Timing

Data Module 2
Pin No. Signal Name
TT(A) - Terminal Timing
TT(B) - Terminal Timing
SD(A) - Sand Data
SD(B) - Sand Data
RD(A) - Received Data
RD(B) - Received Data
RS(A) - Request to Send (RTS)
RS(B) - Request to Send (RTS)
CS(A) - Clear To Send
CS(B) - Clear To Send
Local Loopback
Remote Loopback
Signal Ground
ST(A) - Send Timing
ST(B) - Send Timing

831022A2.CDR

Figure 3–34: TIMING CONFIGURATION FOR RS422 TWO-CHANNEL, 3-TERMINAL APPLICATION

Data module 1 provides timing to the B30 RS422 interface via the ST(A) and ST(B) outputs. Data module 1 also provides
timing to data module 2 TT(A) and TT(B) inputs via the ST(A) and AT(B) outputs. The data module pin numbers have been
omitted in the figure above since they may vary depending on the manufacturer.

c) TRANSIT TIMING
The RS422 Interface accepts one clock input for Transmit Timing. It is important that the rising edge of the 64 kHz Transmit
Timing clock of the Multiplexer Interface is sampling the data in the center of the Transmit Data window. Therefore, it is
important to confirm Clock and Data Transitions to ensure Proper System Operation. For example, the following figure
shows the positive edge of the Tx Clock in the center of the Tx Data bit.

Tx Clock

Tx Data

Figure 3–35: CLOCK AND DATA TRANSITIONS

GE Multilin B30 Bus Differential Relay 3-29

 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS 3 HARDWARE

d) RECEIVE TIMING
The RS422 Interface utilizes NRZI-MARK Modulation Code and; therefore, does not rely on an Rx Clock to recapture data.
NRZI-MARK is an edge-type, invertible, self-clocking code.
To recover the Rx Clock from the data-stream, an integrated DPLL (Digital Phase Lock Loop) circuit is utilized. The DPLL is
driven by an internal clock, which is over-sampled 16X, and uses this clock along with the data-stream to generate a data
clock that can be used as the SCC (Serial Communication Controller) receive clock.

3.3.6 RS422 AND FIBER INTERFACE

The following figure shows the combined RS422 plus Fiber interface configuration at 64K baud. The 7L, 7M, 7N, 7P, and 74
modules are used in 2-terminal with a redundant channel or 3-terminal configurations where Channel 1 is employed via the
RS422 interface (possibly with a multiplexer) and Channel 2 via direct fiber.
3 AWG 24 twisted shielded pair is recommended for external RS422 connections and the shield should be grounded only at
one end. For the direct fiber channel, power budget issues should be addressed properly.
When using a LASER Interface, attenuators may be necessary to ensure that you do not exceed Maximum
Optical Input Power to the receiver.
WARNING

L907LNMP.CDR
P/O 827831AE.DWG

Figure 3–36: RS422 AND FIBER INTERFACE CONNECTION

Connections shown above are for multiplexers configured as DCE (Data Communications Equipment) units.

3.3.7 G.703 AND FIBER INTERFACE

The figure below shows the combined G.703 plus Fiber interface configuration at 64K baud. The 7E, 7F, 7G, 7Q, and 75
modules are used in configurations where Channel 1 is employed via the G.703 interface (possibly with a multiplexer) and
Channel 2 via direct fiber. AWG 24 twisted shielded pair is recommended for external G.703 connections connecting the
shield to Pin 1A at one end only. For the direct fiber channel, power budget issues should be addressed properly. See pre-
vious sections for more details on the G.703 and Fiber interfaces.
When using a LASER Interface, attenuators may be necessary to ensure that you do not exceed Maximum
Optical Input Power to the receiver.
WARNING

X 1a Shld.
W7E, F, G and Q

X 1b Tx -
G.703
X 2a Rx -
CHANNEL 1
X 2b Tx +
X 3a Rx +
X 3b SURGE

Tx2
FIBER
CHANNEL 2
Rx2

Figure 3–37: G.703 AND FIBER INTERFACE CONNECTION

3-30 B30 Bus Differential Relay GE Multilin

 3 HARDWARE 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS

3.3.8 IEEE C37.94 INTERFACE

The UR-series IEEE C37.94 communication modules (76 and 77) are designed to interface with IEEE C37.94 compliant
digital multiplexers and/or an IEEE C37.94 compliant interface converter for use with direct input/output applications for
firmware revisions 3.30 and higher. The IEEE C37.94 standard defines a point-to-point optical link for synchronous data
between a multiplexer and a teleprotection device. This data is typically 64 kbps, but the standard provides for speeds up to
64n kbps, where n = 1, 2,…, 12. The UR-series C37.94 communication module is 64 kbps only with n fixed at 1. The frame
is a valid International Telecommunications Union (ITU-T) recommended G.704 pattern from the standpoint of framing and
data rate. The frame is 256 bits and is repeated at a frame rate of 8000 Hz, with a resultant bit rate of 2048 kbps.
The specifications for the module are as follows:
IEEE standard: C37.94 for 1 × 64 kbps optical fiber interface
Fiber optic cable type: 50 mm or 62.5 mm core diameter optical fiber
Fiber optic mode: multi-mode
Fiber optic cable length: up to 2 km
3
Fiber optic connector: type ST
Wavelength: 830 ±40 nm
Connection: as per all fiber optic connections, a Tx to Rx connection is required.
The UR-series C37.94 communication module can be connected directly to any compliant digital multiplexer that supports
the IEEE C37.94 standard as shown below.
IEEE C37.94
Fiber Interface

Digital
UR series Multiplexer
relay IEEE C37.94
compliant

up to 2 km

The UR-series C37.94 communication module can be connected to the electrical interface (G.703, RS422, or X.21) of a
non-compliant digital multiplexer via an optical-to-electrical interface converter that supports the IEEE C37.94 standard, as
shown below.

IEEE C37.94 RS422

Fiber Interface Interface
Digital
UR series IEEE C37.94 Multiplexer
relay Converter with EIA-422
up to 2 km Interface

The UR-series C37.94 communication module has six (6) switches that are used to set the clock configuration. The func-
tions of these control switches is shown below.

842753A1.CDR

For the Internal Timing Mode, the system clock is generated internally. Therefore, the timing switch selection should be
Internal Timing for Relay 1 and Loop Timed for Relay 2. There must be only one timing source configured.
For the Looped Timing Mode, the system clock is derived from the received line signal. Therefore, the timing selection
should be in Loop Timing Mode for connections to higher order systems.
The C37.94 communications module cover removal procedure is as follows:

GE Multilin B30 Bus Differential Relay 3-31

 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS 3 HARDWARE

1. Remove the C37.94 module (76 or 77):

The ejector/inserter clips located at the top and at the bottom of each module, must be pulled simultaneously in order
to release the module for removal. Before performing this action, control power must be removed from the relay.
The original location of the module should be recorded to help ensure that the same or replacement module is inserted
into the correct slot.
2. Remove the module cover screw.
3. Remove the top cover by sliding it towards the rear and then lift it upwards.
4. Set the Timing Selection Switches (Channel 1, Channel 2) to the desired timing modes (see description above).
5. Replace the top cover and the cover screw.
6. Re-insert the C37.94 module Take care to ensure that the correct module type is inserted into the correct slot posi-
tion. The ejector/inserter clips located at the top and at the bottom of each module must be in the disengaged position
3 as the module is smoothly inserted into the slot. Once the clips have cleared the raised edge of the chassis, engage
the clips simultaneously. When the clips have locked into position, the module will be fully inserted.

Figure 3–38: IEEE C37.94 TIMING SELECTION SWITCH SETTING

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 3 HARDWARE 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS

3.3.9 C37.94SM INTERFACE

The UR-series C37.94SM communication modules (2A and 2B) are designed to interface with modified IEEE C37.94 com-
pliant digital multiplexers and/or IEEE C37.94 compliant interface converters that have been converted from 820 nm multi-
mode fiber optics to 1300 nm ELED single-mode fiber optics. The IEEE C37.94 standard defines a point-to-point optical link
for synchronous data between a multiplexer and a teleprotection device. This data is typically 64 kbps, but the standard
provides for speeds up to 64n kbps, where n = 1, 2,…, 12. The UR-series C37.94SM communication module is 64 kbps
only with n fixed at 1. The frame is a valid International Telecommunications Union (ITU-T) recommended G.704 pattern
from the standpoint of framing and data rate. The frame is 256 bits and is repeated at a frame rate of 8000 Hz, with a result-
ant bit rate of 2048 kbps.
The specifications for the module are as follows:
Emulated IEEE standard: emulates C37.94 for 1 × 64 kbps optical fiber interface (modules set to n = 1 or 64 kbps)
Fiber optic cable type: 9/125 μm core diameter optical fiber
Fiber optic mode: single-mode, ELED compatible with HP HFBR-1315T transmitter and HP HFBR-2316T receiver
3
Fiber optic cable length: up to 10 km
Fiber optic connector: type ST
Wavelength: 1300 ±40 nm
Connection: as per all fiber optic connections, a Tx to Rx connection is required.
The UR-series C37.94SM communication module can be connected directly to any compliant digital multiplexer that sup-
ports C37.94SM as shown below.
C37.94SM
Fiber Interface

Digital
UR-series Multiplexer
relay C37.94SM

up to 10 km

It can also can be connected directly to any other UR-series relay with a C37.94SM module as shown below.
C37.94SM
Fiber Interface

UR-series UR-series
relay relay

up to 10 km

The UR-series C37.94SM communication module has six (6) switches that are used to set the clock configuration. The
functions of these control switches is shown below.

842753A1.CDR

For the Internal Timing Mode, the system clock is generated internally. Therefore, the timing switch selection should be
Internal Timing for Relay 1 and Loop Timed for Relay 2. There must be only one timing source configured.
For the Looped Timing Mode, the system clock is derived from the received line signal. Therefore, the timing selection
should be in Loop Timing Mode for connections to higher order systems.
The C37.94SM communications module cover removal procedure is as follows:
1. Remove the C37.94SM module (modules 2A or 2B):

GE Multilin B30 Bus Differential Relay 3-33

 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS 3 HARDWARE

The ejector/inserter clips located at the top and at the bottom of each module, must be pulled simultaneously in order
to release the module for removal. Before performing this action, control power must be removed from the relay.
The original location of the module should be recorded to help ensure that the same or replacement module is inserted
into the correct slot.
2. Remove the module cover screw.
3. Remove the top cover by sliding it towards the rear and then lift it upwards.
4. Set the Timing Selection Switches (Channel 1, Channel 2) to the desired timing modes (see description above).
5. Replace the top cover and the cover screw.
6. Re-insert the C37.94SM module Take care to ensure that the correct module type is inserted into the correct slot
position. The ejector/inserter clips located at the top and at the bottom of each module must be in the disengaged posi-
tion as the module is smoothly inserted into the slot. Once the clips have cleared the raised edge of the chassis,
3 engage the clips simultaneously. When the clips have locked into position, the module will be fully inserted.

Figure 3–39: C37.94SM TIMING SELECTION SWITCH SETTING

3-34 B30 Bus Differential Relay GE Multilin

 4 HUMAN INTERFACES 4.1 ENERVISTA UR SETUP SOFTWARE INTERFACE

4 HUMAN INTERFACES 4.1ENERVISTA UR SETUP SOFTWARE INTERFACE 4.1.1 INTRODUCTION

The EnerVista UR Setup software provides a graphical user interface (GUI) as one of two human interfaces to a UR device.
The alternate human interface is implemented via the device’s faceplate keypad and display (see Faceplate Interface sec-
tion in this chapter).
The EnerVista UR Setup software provides a single facility to configure, monitor, maintain, and trouble-shoot the operation
of relay functions, connected over local or wide area communication networks. It can be used while disconnected (i.e. off-
line) or connected (i.e. on-line) to a UR device. In off-line mode, settings files can be created for eventual downloading to
the device. In on-line mode, you can communicate with the device in real-time.
The EnerVista UR Setup software, provided with every B30 relay, can be run from any computer supporting Microsoft Win-
dows® 95, 98, NT, 2000, ME, and XP. This chapter provides a summary of the basic EnerVista UR Setup software interface
features. The EnerVista UR Setup Help File provides details for getting started and using the EnerVista UR Setup software
interface.

4.1.2 CREATING A SITE LIST

To start using the EnerVista UR Setup software, a site definition and device definition must first be created. See the EnerV-
ista UR Setup Help File or refer to the Connecting EnerVista UR Setup with the B30 section in Chapter 1 for details.

4.1.3 ENERVISTA UR SETUP OVERVIEW

4
a) ENGAGING A DEVICE
The EnerVista UR Setup software may be used in on-line mode (relay connected) to directly communicate with a UR relay.
Communicating relays are organized and grouped by communication interfaces and into sites. Sites may contain any num-
ber of relays selected from the UR product series.

b) USING SETTINGS FILES

The EnerVista UR Setup software interface supports three ways of handling changes to relay settings:
• In off-line mode (relay disconnected) to create or edit relay settings files for later download to communicating relays.
• While connected to a communicating relay to directly modify any relay settings via relay data view windows, and then
save the settings to the relay.
• You can create/edit settings files and then write them to the relay while the interface is connected to the relay.
Settings files are organized on the basis of file names assigned by the user. A settings file contains data pertaining to the
following types of relay settings:
• Device Definition
• Product Setup
• System Setup
• FlexLogic™
• Grouped Elements
• Control Elements
• Inputs/Outputs
• Testing
Factory default values are supplied and can be restored after any changes.

c) CREATING AND EDITING FLEXLOGIC™

You can create or edit a FlexLogic™ equation in order to customize the relay. You can subsequently view the automatically
generated logic diagram.

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 4.1 ENERVISTA UR SETUP SOFTWARE INTERFACE 4 HUMAN INTERFACES

d) VIEWING ACTUAL VALUES

You can view real-time relay data such as input/output status and measured parameters.

e) VIEWING TRIGGERED EVENTS

While the interface is in either on-line or off-line mode, you can view and analyze data generated by triggered specified
parameters, via one of the following:
• Event Recorder facility: The event recorder captures contextual data associated with the last 1024 events, listed in
chronological order from most recent to oldest.
• Oscillography facility: The oscillography waveform traces and digital states are used to provide a visual display of
power system and relay operation data captured during specific triggered events.

f) FILE SUPPORT
• Execution: Any EnerVista UR Setup file which is double clicked or opened will launch the application, or provide focus
to the already opened application. If the file was a settings file (has a URS extension) which had been removed from
the Settings List tree menu, it will be added back to the Settings List tree menu.
• Drag and Drop: The Site List and Settings List control bar windows are each mutually a drag source and a drop target
for device-order-code-compatible files or individual menu items. Also, the Settings List control bar window and any
4 Windows Explorer directory folder are each mutually a file drag source and drop target.
New files which are dropped into the Settings List window are added to the tree which is automatically sorted alphabet-
ically with respect to settings file names. Files or individual menu items which are dropped in the selected device menu
in the Site List window will automatically be sent to the on-line communicating device.

g) FIRMWARE UPGRADES
The firmware of a B30 device can be upgraded, locally or remotely, via the EnerVista UR Setup software. The correspond-
ing instructions are provided by the EnerVista UR Setup Help file under the topic “Upgrading Firmware”.
Modbus addresses assigned to firmware modules, features, settings, and corresponding data items (i.e. default
values, minimum/maximum values, data type, and item size) may change slightly from version to version of firm-
NOTE
ware. The addresses are rearranged when new features are added or existing features are enhanced or modified.
The EEPROM DATA ERROR message displayed after upgrading/downgrading the firmware is a resettable, self-test
message intended to inform users that the Modbus addresses have changed with the upgraded firmware. This
message does not signal any problems when appearing after firmware upgrades.

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 4 HUMAN INTERFACES 4.1 ENERVISTA UR SETUP SOFTWARE INTERFACE

4.1.4 ENERVISTA UR SETUP MAIN WINDOW

The EnerVista UR Setup software main window supports the following primary display components:
a. Title bar which shows the pathname of the active data view
b. Main window menu bar
c. Main window tool bar
d. Site List control bar window
e. Settings List control bar window
f. Device data view window(s), with common tool bar
g. Settings File data view window(s), with common tool bar
h. Workspace area with data view tabs
i. Status bar

Figure 4–1: ENERVISTA UR SETUP SOFTWARE MAIN WINDOW

GE Multilin B30 Bus Differential Relay 4-3

 4.2 FACEPLATE INTERFACE 4 HUMAN INTERFACES

4.2FACEPLATE INTERFACE 4.2.1 FACEPLATE

The keypad/display/LED interface is one of two alternate human interfaces supported. The other alternate human interface
is implemented via the EnerVista UR Setup software. The faceplate interface is available in two configurations: horizontal
or vertical. The faceplate interface consists of several functional panels.
The faceplate is hinged to allow easy access to the removable modules. There is also a removable dust cover that fits over
the faceplate which must be removed in order to access the keypad panel. The following two figures show the horizontal
and vertical arrangement of faceplate panels.

LED PANEL 1 LED PANEL 2 LED PANEL 3 DISPLAY

STATUS EVENT CAUSE

IN SERVICE VOLTAGE
TROUBLE CURRENT RESET
TEST MODE
TRIP
FREQUENCY
OTHER USER 1
GE Multilin
ALARM PHASE A
PICKUP PHASE B USER 2
PHASE C
NEUTRAL/GROUND USER 3

MENU 7 8 9
USER 4 1 3 5 7 9 11

4
USER LABEL USER LABEL USER LABEL USER LABEL USER LABEL USER LABEL HELP MESSAGE 4 5 6
USER 5

ESCAPE 1 2 3
USER 6
2 4 6 8 10 12 ENTER VALUE 0 . +/-
USER 7 USER LABEL USER LABEL USER LABEL USER LABEL USER LABEL USER LABEL

CONTROL USER-PROGRAMMABLE KEYPAD

PUSHBUTTONS 1-7 PUSHBUTTONS 1-12 827801A5.CDR

Figure 4–2: UR-SERIES HORIZONTAL FACEPLATE PANELS

Figure 4–3: UR-SERIES VERTICAL FACEPLATE PANELS

4-4 B30 Bus Differential Relay GE Multilin

 4 HUMAN INTERFACES 4.2 FACEPLATE INTERFACE

4.2.2 LED INDICATORS

a) LED PANEL 1
This panel provides several LED indicators, several keys, and a communications port. The RESET key is used to reset any
latched LED indicator or target message, once the condition has been cleared (these latched conditions can also be reset
via the SETTINGS INPUT/OUTPUTS RESETTING menu). The USER keys are not used in this unit. The RS232 port is
intended for connection to a portable PC.

STATUS EVENT CAUSE

IN SERVICE VOLTAGE
TROUBLE CURRENT RESET
TEST MODE FREQUENCY
TRIP OTHER USER 1
ALARM PHASE A
PICKUP PHASE B USER 2
PHASE C
NEUTRAL/GROUND USER 3

Figure 4–4: LED PANEL 1

STATUS INDICATORS:
• IN SERVICE: Indicates that control power is applied; all monitored inputs/outputs and internal systems are OK; the
4
relay has been programmed.
• TROUBLE: Indicates that the relay has detected an internal problem.
• TEST MODE: Indicates that the relay is in test mode.
• TRIP: Indicates that the selected FlexLogic™ operand serving as a Trip switch has operated. This indicator always
latches; the RESET command must be initiated to allow the latch to be reset.
• ALARM: Indicates that the selected FlexLogic™ operand serving as an Alarm switch has operated. This indicator is
never latched.
• PICKUP: Indicates that an element is picked up. This indicator is never latched.
EVENT CAUSE INDICATORS:
These indicate the input type that was involved in a condition detected by an element that is operated or has a latched flag
waiting to be reset.
• VOLTAGE: Indicates voltage was involved.
• CURRENT: Indicates current was involved.
• FREQUENCY: Indicates frequency was involved.
• OTHER: Indicates a composite function was involved.
• PHASE A: Indicates Phase A was involved.
• PHASE B: Indicates Phase B was involved.
• PHASE C: Indicates Phase C was involved.
• NEUTRAL/GROUND: Indicates neutral or ground was involved.

GE Multilin B30 Bus Differential Relay 4-5

 4.2 FACEPLATE INTERFACE 4 HUMAN INTERFACES

b) LED PANELS 2 AND 3

These panels provide 48 amber LED indicators whose operation is controlled by the user. Support for applying a custom-
ized label beside every LED is provided.
User customization of LED operation is of maximum benefit in installations where languages other than English are used to
communicate with operators. Refer to the User-Programmable LEDs section in Chapter 5 for the settings used to program
the operation of the LEDs on these panels.

Figure 4–5: LED PANELS 2 AND 3 (INDEX TEMPLATE)

c) DEFAULT LABELS FOR LED PANEL 2

4 The default labels are intended to represent:
• GROUP 1...6: The illuminated GROUP is the active settings group.
Firmware revisions 2.9x and earlier support eight user setting groups; revisions 3.0x and higher support
six setting groups. For convenience of users using earlier firmware revisions, the relay panel shows eight
NOTE
setting groups. Please note that the LEDs, despite their default labels, are fully user-programmable.
The relay is shipped with the default label for the LED panel 2. The LEDs, however, are not pre-programmed. To match the
pre-printed label, the LED settings must be entered as shown in the User-Programmable LEDs section of Chapter 5. The
LEDs are fully user-programmable. The default labels can be replaced by user-printed labels for both panels as explained
in the following section.

SETTINGS IN USE
GROUP 1
GROUP 2
GROUP 3
GROUP 4
GROUP 5
GROUP 6
GROUP 7
GROUP 8

Figure 4–6: LED PANEL 2 (DEFAULT LABEL)

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 4 HUMAN INTERFACES 4.2 FACEPLATE INTERFACE

d) CUSTOM LABELING OF LEDS

Custom labeling of an LED-only panel is facilitated through a Microsoft Word file available from the following URL:
http://www.GEindustrial.com/multilin/support/ur/
This file provides templates and instructions for creating appropriate labeling for the LED panel. The following procedures
are contained in the downloadable file. The panel templates provide relative LED locations and located example text (x)
edit boxes. The following procedure demonstrates how to install/uninstall the custom panel labeling.
1. Remove the clear Lexan Front Cover (GE Multilin Part Number: 1501-0014).

Push in
and gently lift
up the cover.
2. Pop out the LED Module and/or the Blank Module with a screwdriver as shown below. Be careful not to damage the
plastic. 4

( LED MODULE ) ( BLANK MODULE )

3. Place the left side of the customized module back to the front panel frame, then snap back the right side.
4. Put the clear Lexan Front Cover back into place.

e) CUSTOMIZING THE DISPLAY MODULE

The following items are required to customize the B30 display module:
• Black and white or color printer (color preferred).
• Microsoft Word 97 or later software for editing the template.
• 1 each of: 8.5" x 11" white paper, exacto knife, ruler, custom display module (GE Multilin Part Number: 1516-0069),
and a custom module cover (GE Multilin Part Number: 1502-0015).
1. Open the LED panel customization template with Microsoft Word. Add text in places of the LED x text placeholders on
the template(s). Delete unused place holders as required.
2. When complete, save the Word file to your local PC for future use.
3. Print the template(s) to a local printer.
4. From the printout, cut-out the Background Template from the three windows, using the cropmarks as a guide.
5. Put the Background Template on top of the custom display module (GE Multilin Part Number: 1513-0069) and snap the
clear custom module cover (GE Multilin Part Number: 1502-0015) over it and the templates.

GE Multilin B30 Bus Differential Relay 4-7

 4.2 FACEPLATE INTERFACE 4 HUMAN INTERFACES

4.2.3 DISPLAY

All messages are displayed on a 2 × 20 character vacuum fluorescent display to make them visible under poor lighting con-
ditions. An optional liquid crystal display (LCD) is also available. Messages are displayed in English and do not require the
aid of an instruction manual for deciphering. While the keypad and display are not actively being used, the display will
default to defined messages. Any high priority event driven message will automatically override the default message and
appear on the display.

4.2.4 KEYPAD

Display messages are organized into ‘pages’ under the following headings: Actual Values, Settings, Commands, and Tar-
gets. The key navigates through these pages. Each heading page is broken down further into logical subgroups.
The MESSAGE keys navigate through the subgroups. The VALUE keys scroll increment or decrement
numerical setting values when in programming mode. These keys also scroll through alphanumeric values in the text edit
mode. Alternatively, values may also be entered with the numeric keypad.
The key initiates and advance to the next character in text edit mode or enters a decimal point. The key may be
pressed at any time for context sensitive help messages. The key stores altered setting values.

4 4.2.5 MENUS

a) NAVIGATION
Press the key to select the desired header display page (top-level menu). The header title appears momentarily fol-
lowed by a header display page menu item. Each press of the key advances through the main heading pages as
illustrated below.

ACTUAL VALUES SETTINGS COMMANDS TARGETS

ACTUAL VALUES SETTINGS COMMANDS No Active

STATUS PRODUCT SETUP VIRTUAL INPUTS Targets

USER DISPLAYS
(when in use)

User Display 1

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 4 HUMAN INTERFACES 4.2 FACEPLATE INTERFACE

b) HIERARCHY
The setting and actual value messages are arranged hierarchically. The header display pages are indicated by double
scroll bar characters ( ), while sub-header pages are indicated by single scroll bar characters ( ). The header display
pages represent the highest level of the hierarchy and the sub-header display pages fall below this level. The MESSAGE
and keys move within a group of headers, sub-headers, setting values, or actual values. Continually pressing the
MESSAGE key from a header display displays specific information for the header category. Conversely, continually
pressing the MESSAGE key from a setting value or actual value display returns to the header display.

HIGHEST LEVEL LOWEST LEVEL (SETTING VALUE)

SETTINGS PASSWORD ACCESS LEVEL:

PRODUCT SETUP SECURITY Restricted

SETTINGS
SYSTEM SETUP

c) EXAMPLE MENU NAVIGATION

4
ACTUAL VALUES Press the key until the header for the first Actual Values page appears. This
STATUS page contains system and relay status information. Repeatedly press the
MESSAGE keys to display the other actual value headers.

SETTINGS Press the key until the header for the first page of Settings appears. This page
PRODUCT SETUP contains settings to configure the relay.

SETTINGS Press the MESSAGE key to move to the next Settings page. This page contains
SYSTEM SETUP settings for System Setup. Repeatedly press the MESSAGE keys to display
the other setting headers and then back to the first Settings page header.

PASSWORD From the Settings page one header (Product Setup), press the MESSAGE key
SECURITY once to display the first sub-header (Password Security).

ACCESS LEVEL: Press the MESSAGE key once more and this will display the first setting for Pass-
Restricted word Security. Pressing the MESSAGE key repeatedly will display the remaining
setting messages for this sub-header.
PASSWORD Press the MESSAGE key once to move back to the first sub-header message.
SECURITY

DISPLAY Pressing the MESSAGE key will display the second setting sub-header associ-
PROPERTIES ated with the Product Setup header.

FLASH MESSAGE Press the MESSAGE key once more and this will display the first setting for Dis-
TIME: 1.0 s play Properties.

DEFAULT MESSAGE To view the remaining settings associated with the Display Properties subheader,
INTENSITY: 25% repeatedly press the MESSAGE key. The last message appears as shown.

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 4.2 FACEPLATE INTERFACE 4 HUMAN INTERFACES

4.2.6 CHANGING SETTINGS

a) ENTERING NUMERICAL DATA

Each numerical setting has its own minimum, maximum, and increment value associated with it. These parameters define
what values are acceptable for a setting.

FLASH MESSAGE For example, select the SETTINGS PRODUCT SETUP DISPLAY PROPERTIES FLASH
TIME: 1.0 s MESSAGE TIME setting.

MINIMUM: 0.5 Press the key to view the minimum and maximum values. Press the key
MAXIMUM: 10.0 again to view the next context sensitive help message.

Two methods of editing and storing a numerical setting value are available.
• 0 to 9 and (decimal point): The relay numeric keypad works the same as that of any electronic calculator. A num-
ber is entered one digit at a time. The leftmost digit is entered first and the rightmost digit is entered last. Pressing the
MESSAGE key or pressing the ESCAPE key, returns the original value to the display.
• VALUE : The VALUE key increments the displayed value by the step value, up to the maximum value
4 allowed. While at the maximum value, pressing the VALUE
upward from the minimum value. The VALUE
key again will allow the setting selection to continue
key decrements the displayed value by the step value, down to the
minimum value. While at the minimum value, pressing the VALUE key again will allow the setting selection to con-
tinue downward from the maximum value.

FLASH MESSAGE As an example, set the flash message time setting to 2.5 seconds. Press the appropriate
TIME: 2.5 s numeric keys in the sequence “2 . 5". The display message will change as the digits are
being entered.
NEW SETTING Until is pressed, editing changes are not registered by the relay. Therefore, press
HAS BEEN STORED to store the new value in memory. This flash message will momentarily appear as
confirmation of the storing process. Numerical values which contain decimal places will
be rounded-off if more decimal place digits are entered than specified by the step value.

b) ENTERING ENUMERATION DATA

Enumeration settings have data values which are part of a set, whose members are explicitly defined by a name. A set is
comprised of two or more members.

ACCESS LEVEL: For example, the selections available for ACCESS LEVEL are "Restricted", "Command",
Restricted "Setting", and "Factory Service".

Enumeration type values are changed using the VALUE keys. The VALUE key displays the next selection while the
VALUE key displays the previous selection.

ACCESS LEVEL: If the ACCESS LEVEL needs to be "Setting", press the VALUE keys until the proper selec-
Setting tion is displayed. Press at any time for the context sensitive help messages.

NEW SETTING Changes are not registered by the relay until the key is pressed. Pressing
HAS BEEN STORED stores the new value in memory. This flash message momentarily appears as confirma-
tion of the storing process.

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 4 HUMAN INTERFACES 4.2 FACEPLATE INTERFACE

c) ENTERING ALPHANUMERIC TEXT

Text settings have data values which are fixed in length, but user-defined in character. They may be comprised of upper
case letters, lower case letters, numerals, and a selection of special characters.
There are several places where text messages may be programmed to allow the relay to be customized for specific appli-
cations. One example is the Message Scratchpad. Use the following procedure to enter alphanumeric text messages.
For example: to enter the text, “Breaker #1”
1. Press to enter text edit mode.
2. Press the VALUE keys until the character 'B' appears; press to advance the cursor to the next position.
3. Repeat step 2 for the remaining characters: r,e,a,k,e,r, ,#,1.
4. Press to store the text.
5. If you have any problem, press to view context sensitive help. Flash messages will sequentially appear for sev-
eral seconds each. For the case of a text setting message, pressing displays how to edit and store new values.

d) ACTIVATING THE RELAY

RELAY SETTINGS:
Not Programmed
When the relay is powered up, the Trouble LED will be on, the In Service LED off, and
this message displayed, indicating the relay is in the "Not Programmed" state and is 4
safeguarding (output relays blocked) against the installation of a relay whose settings
have not been entered. This message remains until the relay is explicitly put in the
"Programmed" state.
To change the RELAY SETTINGS: "Not Programmed" mode to "Programmed", proceed as follows:
1. Press the key until the SETTINGS header flashes momentarily and the SETTINGS PRODUCT SETUP message
appears on the display.
2. Press the MESSAGE key until the PASSWORD SECURITY message appears on the display.
3. Press the MESSAGE key until the INSTALLATION message appears on the display.
4. Press the MESSAGE key until the RELAY SETTINGS: Not Programmed message is displayed.

SETTINGS

SETTINGS PASSWORD
PRODUCT SETUP SECURITY
DISPLAY
PROPERTIES
↓

USER-DEFINABLE
DISPLAYS
INSTALLATION RELAY SETTINGS:
Not Programmed

5. After the RELAY SETTINGS: Not Programmed message appears on the display, press the VALUE keys change the
selection to "Programmed".
6. Press the key.

RELAY SETTINGS: RELAY SETTINGS: NEW SETTING

Not Programmed Programmed HAS BEEN STORED

GE Multilin B30 Bus Differential Relay 4-11

 4.2 FACEPLATE INTERFACE 4 HUMAN INTERFACES

7. When the "NEW SETTING HAS BEEN STORED" message appears, the relay will be in "Programmed" state and the
In Service LED will turn on.

e) ENTERING INITIAL PASSWORDS

To enter the initial Setting (or Command) Password, proceed as follows:
1. Press the key until the SETTINGS header flashes momentarily and the SETTINGS PRODUCT SETUP message
appears on the display.
2. Press the MESSAGE key until the ACCESS LEVEL message appears on the display.
3. Press the MESSAGE key until the CHANGE SETTING (or COMMAND) PASSWORD message appears on the display.
SETTINGS

SETTINGS PASSWORD ACCESS LEVEL:

PRODUCT SETUP SECURITY Restricted
CHANGE COMMAND
PASSWORD: No
4 CHANGE SETTING
PASSWORD: No
ENCRYPTED COMMAND
PASSWORD: ----------
ENCRYPTED SETTING
PASSWORD: ----------

4. After the CHANGE...PASSWORD message appears on the display, press the VALUE key or the VALUE key to
change the selection to “Yes”.
5. Press the key and the display will prompt you to ENTER NEW PASSWORD.
6. Type in a numerical password (up to 10 characters) and press the key.
7. When the VERIFY NEW PASSWORD is displayed, re-type in the same password and press .
CHANGE SETTING
PASSWORD: No

CHANGE SETTING ENTER NEW VERIFY NEW

PASSWORD: Yes PASSWORD: ########## PASSWORD: ##########

NEW PASSWORD
HAS BEEN STORED

8. When the NEW PASSWORD HAS BEEN STORED message appears, your new Setting (or Command) Password will be
active.

f) CHANGING EXISTING PASSWORD

To change an existing password, follow the instructions in the previous section with the following exception. A message will
prompt you to type in the existing password (for each security level) before a new password can be entered.
In the event that a password has been lost (forgotten), submit the corresponding Encrypted Password from the PASSWORD
SECURITY menu to the Factory for decoding.

4-12 B30 Bus Differential Relay GE Multilin

 4 HUMAN INTERFACES 4.2 FACEPLATE INTERFACE

g) INVALID PASSWORD ENTRY

In the event that an incorrect Command or Setting password has been entered via the faceplate interface three times within
a three-minute time span, the LOCAL ACCESS DENIED FlexLogic™ operand will be set to “On” and the B30 will not allow
Settings or Command access via the faceplate interface for the next ten minutes. The TOO MANY ATTEMPTS – BLOCKED
FOR 10 MIN! flash message will appear upon activation of the ten minute timeout or any other time a user attempts any
change to the defined tier during the ten minute timeout. The LOCAL ACCESS DENIED FlexLogic™ operand will be set to
“Off” after the expiration of the ten-minute timeout.
In the event that an incorrect Command or Setting password has been entered via the any external communications inter-
face three times within a three-minute time span, the REMOTE ACCESS DENIED FlexLogic™ operand will be set to “On” and
the B30 will not allow Settings or Command access via the any external communications interface for the next ten minutes.
The REMOTE ACCESS DENIED FlexLogic™ operand will be set to “Off” after the expiration of the ten-minute timeout.

GE Multilin B30 Bus Differential Relay 4-13

 4.2 FACEPLATE INTERFACE 4 HUMAN INTERFACES

4-14 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.1 OVERVIEW

5 SETTINGS 5.1OVERVIEW 5.1.1 SETTINGS MENU

SETTINGS PASSWORD
See page 5-7.
PRODUCT SETUP SECURITY
DISPLAY
See page 5-8.
PROPERTIES
CLEAR RELAY
See page 5-9.
RECORDS
COMMUNICATIONS
See page 5-10.

MODBUS USER MAP

See page 5-22.

REAL TIME
See page 5-22.
CLOCK
USER-PROGRAMMABLE
See page 5-22.
FAULT REPORT
OSCILLOGRAPHY
See page 5-23.

USER-PROGRAMMABLE
See page 5-25.
LEDS
5
USER-PROGRAMMABLE
See page 5-28.
SELF TESTS
CONTROL
See page 5-29.
PUSHBUTTONS
USER-PROGRAMMABLE
See page 5-30.
PUSHBUTTONS
FLEX STATE
See page 5-31.
PARAMETERS
USER-DEFINABLE
See page 5-32.
DISPLAYS
DIRECT I/O
See page 5-34.

INSTALLATION
See page 5-39.

SETTINGS AC INPUTS
See page 5-40.
SYSTEM SETUP
POWER SYSTEM
See page 5-41.

SIGNAL SOURCES
See page 5-42.

FLEXCURVES
See page 5-44.

BUS
See page 5-51.

GE Multilin B30 Bus Differential Relay 5-1

 5.1 OVERVIEW 5 SETTINGS

SETTINGS FLEXLOGIC
See page 5-63.
FLEXLOGIC EQUATION EDITOR
FLEXLOGIC
See page 5-63.
TIMERS
FLEXELEMENTS
See page 5-64.

NON-VOLATILE
See page 5-68.
LATCHES

SETTINGS SETTING GROUP 1

See page 5-69.
GROUPED ELEMENTS
SETTING GROUP 2

SETTING GROUP 3

SETTING GROUP 4

SETTING GROUP 5

5 SETTING GROUP 6

SETTINGS SETTING GROUPS

See page 5-99.
CONTROL ELEMENTS
SELECTOR SWITCH
See page 5-100.

DIGITAL ELEMENTS
See page 5-106.

DIGITAL COUNTERS
See page 5-109.

MONITORING
See page 5-111.
ELEMENTS

SETTINGS CONTACT INPUTS

See page 5-112.
INPUTS / OUTPUTS
VIRTUAL INPUTS
See page 5-114.

CONTACT OUTPUTS
See page 5-115.

VIRTUAL OUTPUTS
See page 5-117.

REMOTE DEVICES
See page 5-118.

5-2 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.1 OVERVIEW

REMOTE INPUTS
See page 5-119.

REMOTE OUTPUTS
See page 5-120.
DNA BIT PAIRS
REMOTE OUTPUTS
See page 5-120.
UserSt BIT PAIRS
RESETTING
See page 5-121.

DIRECT INPUTS
See page 5-121.

DIRECT OUTPUTS
See page 5-121.

SETTINGS DCMA INPUTS

See page 5-125.
TRANSDUCER I/O
RTD INPUTS
See page 5-126.

DCMA OUTPUTS
See page 5-126.

SETTINGS TEST MODE

See page 5-130.
5
TESTING FUNCTION: Disabled
TEST MODE INITIATE:
See page 5-130.
On
FORCE CONTACT
See page 5-130.
INPUTS
FORCE CONTACT
See page 5-131.
OUTPUTS

5.1.2 INTRODUCTION TO ELEMENTS

In the design of UR relays, the term “element” is used to describe a feature that is based around a comparator. The com-
parator is provided with an input (or set of inputs) that is tested against a programmed setting (or group of settings) to deter-
mine if the input is within the defined range that will set the output to logic 1, also referred to as “setting the flag”. A single
comparator may make multiple tests and provide multiple outputs; for example, the time overcurrent comparator sets a
Pickup flag when the current input is above the setting and sets an Operate flag when the input current has been at a level
above the pickup setting for the time specified by the time-current curve settings. All comparators, except the Digital Ele-
ment which uses a logic state as the input, use analog parameter actual values as the input.
Elements are arranged into two classes, GROUPED and CONTROL. Each element classed as a GROUPED element is
provided with six alternate sets of settings, in setting groups numbered 1 through 6. The performance of a GROUPED ele-
ment is defined by the setting group that is active at a given time. The performance of a CONTROL element is independent
of the selected active setting group.
The main characteristics of an element are shown on the element logic diagram. This includes the input(s), settings, fixed
logic, and the output operands generated (abbreviations used on scheme logic diagrams are defined in Appendix F).
Some settings for current and voltage elements are specified in per-unit (pu) calculated quantities:
pu quantity = (actual quantity) / (base quantity)

GE Multilin B30 Bus Differential Relay 5-3

 5.1 OVERVIEW 5 SETTINGS

• For current elements, the ‘base quantity’ is the nominal secondary or primary current of the CT. Where the current
source is the sum of two CTs with different ratios, the ‘base quantity’ will be the common secondary or primary current
to which the sum is scaled (i.e. normalized to the larger of the 2 rated CT inputs). For example, if CT1 = 300 / 5 A and
CT2 = 100 / 5 A, then in order to sum these, CT2 is scaled to the CT1 ratio. In this case, the ‘base quantity’ will be 5 A
secondary or 300 A primary.
• For voltage elements the ‘base quantity’ is the nominal primary voltage of the protected system which corresponds
(based on VT ratio and connection) to secondary VT voltage applied to the relay. For example, on a system with a
13.8 kV nominal primary voltage and with 14400:120 V Delta-connected VTs, the secondary nominal voltage (1 pu)
would be:
13800
---------------- × 120 = 115 V (EQ 5.1)
14400
For Wye-connected VTs, the secondary nominal voltage (1 pu) would be:
13800
---------------- × 120
---------- = 66.4 V (EQ 5.2)
14400 3
Many settings are common to most elements and are discussed below:
• FUNCTION setting: This setting programs the element to be operational when selected as “Enabled”. The factory
default is “Disabled”. Once programmed to “Enabled”, any element associated with the Function becomes active and
all options become available.
• NAME setting: This setting is used to uniquely identify the element.
• SOURCE setting: This setting is used to select the parameter or set of parameters to be monitored.
• PICKUP setting: For simple elements, this setting is used to program the level of the measured parameter above or
5 below which the pickup state is established. In more complex elements, a set of settings may be provided to define the
range of the measured parameters which will cause the element to pickup.
• PICKUP DELAY setting: This setting sets a time-delay-on-pickup, or on-delay, for the duration between the Pickup
and Operate output states.
• RESET DELAY setting: This setting is used to set a time-delay-on-dropout, or off-delay, for the duration between the
Operate output state and the return to logic 0 after the input transits outside the defined pickup range.
• BLOCK setting: The default output operand state of all comparators is a logic 0 or “flag not set”. The comparator
remains in this default state until a logic 1 is asserted at the RUN input, allowing the test to be performed. If the RUN
input changes to logic 0 at any time, the comparator returns to the default state. The RUN input is used to supervise
the comparator. The BLOCK input is used as one of the inputs to RUN control.
• TARGET setting: This setting is used to define the operation of an element target message. When set to Disabled, no
target message or illumination of a faceplate LED indicator is issued upon operation of the element. When set to Self-
Reset, the target message and LED indication follow the Operate state of the element, and self-resets once the oper-
ate element condition clears. When set to Latched, the target message and LED indication will remain visible after the
element output returns to logic 0 - until a RESET command is received by the relay.
• EVENTS setting: This setting is used to control whether the Pickup, Dropout or Operate states are recorded by the
event recorder. When set to Disabled, element pickup, dropout or operate are not recorded as events. When set to
Enabled, events are created for:
(Element) PKP (pickup)
(Element) DPO (dropout)
(Element) OP (operate)
The DPO event is created when the measure and decide comparator output transits from the pickup state (logic 1) to
the dropout state (logic 0). This could happen when the element is in the operate state if the reset delay time is not ‘0’.

5-4 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.1 OVERVIEW

5.1.3 INTRODUCTION TO AC SOURCES

a) BACKGROUND
The B30 may be used on systems with breaker-and-a-half or ring bus configurations. In these applications, each of the two
three-phase sets of individual phase currents (one associated with each breaker) can be used as an input to a breaker fail-
ure element. The sum of both breaker phase currents and 3I_0 residual currents may be required for the circuit relaying
and metering functions. For a three-winding transformer application, it may be required to calculate watts and vars for each
of three windings, using voltage from different sets of VTs. These requirements can be satisfied with a single UR, equipped
with sufficient CT and VT input channels, by selecting the parameter to measure. A mechanism is provided to specify the
AC parameter (or group of parameters) used as the input to protection/control comparators and some metering elements.
Selection of the parameter(s) to measure is partially performed by the design of a measuring element or protection/control
comparator by identifying the type of parameter (fundamental frequency phasor, harmonic phasor, symmetrical component,
total waveform RMS magnitude, phase-phase or phase-ground voltage, etc.) to measure. The user completes the process
by selecting the instrument transformer input channels to use and some of the parameters calculated from these channels.
The input parameters available include the summation of currents from multiple input channels. For the summed currents of
phase, 3I_0, and ground current, current from CTs with different ratios are adjusted to a single ratio before summation.
A mechanism called a “Source” configures the routing of CT and VT input channels to measurement sub-systems.
Sources, in the context of UR series relays, refer to the logical grouping of current and voltage signals such that one source
contains all the signals required to measure the load or fault in a particular power apparatus. A given source may contain all
or some of the following signals: three-phase currents, single-phase ground current, three-phase voltages and an auxiliary
voltage from a single VT for checking for synchronism.
To illustrate the concept of Sources, as applied to current inputs only, consider the breaker-and-a-half scheme below. In this
application, the current flows as shown by the arrows. Some current flows through the upper bus bar to some other location
or power equipment, and some current flows into transformer Winding 1. The current into Winding 1 is the phasor sum (or
difference) of the currents in CT1 and CT2 (whether the sum or difference is used depends on the relative polarity of the CT 5
connections). The same considerations apply to transformer Winding 2. The protection elements require access to the net
current for transformer protection, but some elements may need access to the individual currents from CT1 and CT2.

CT1 CT2
Through Current

WDG 1
UR Power
Platform
Transformer
WDG 2

CT3 CT4 827791A2.CDR

Figure 5–1: BREAKER-AND-A-HALF SCHEME

In conventional analog or electronic relays, the sum of the currents is obtained from an appropriate external connection of
all CTs through which any portion of the current for the element being protected could flow. Auxiliary CTs are required to
perform ratio matching if the ratios of the primary CTs to be summed are not identical. In the UR series of relays, provisions
have been included for all the current signals to be brought to the UR device where grouping, ratio correction and summa-
tion are applied internally via configuration settings.
A major advantage of using internal summation is that the individual currents are available to the protection device; for
example, as additional information to calculate a restraint current, or to allow the provision of additional protection features
that operate on the individual currents such as breaker failure.
Given the flexibility of this approach, it becomes necessary to add configuration settings to the platform to allow the user to
select which sets of CT inputs will be added to form the net current into the protected device.

GE Multilin B30 Bus Differential Relay 5-5

 5.1 OVERVIEW 5 SETTINGS

The internal grouping of current and voltage signals forms an internal source. This source can be given a specific name
through the settings, and becomes available to protection and metering elements in the UR platform. Individual names can
be given to each source to help identify them more clearly for later use. For example, in the scheme shown in the above
diagram, the configures one Source to be the sum of CT1 and CT2 and can name this Source as “Wdg 1 Current”.
Once the sources have been configured, the user has them available as selections for the choice of input signal for the pro-
tection elements and as metered quantities.

b) CT/VT MODULE CONFIGURATION

CT and VT input channels are contained in CT/VT modules. The type of input channel can be phase/neutral/other voltage,
phase/ground current, or sensitive ground current. The CT/VT modules calculate total waveform RMS levels, fundamental
frequency phasors, symmetrical components and harmonics for voltage or current, as allowed by the hardware in each
channel. These modules may calculate other parameters as directed by the CPU module.
A CT/VT module contains up to eight input channels, numbered 1 through 8. The channel numbering corresponds to the
module terminal numbering 1 through 8 and is arranged as follows: Channels 1, 2, 3 and 4 are always provided as a group,
hereafter called a “bank,” and all four are either current or voltage, as are Channels 5, 6, 7 and 8. Channels 1, 2, 3 and 5, 6,
7 are arranged as phase A, B and C respectively. Channels 4 and 8 are either another current or voltage.
Banks are ordered sequentially from the block of lower-numbered channels to the block of higher-numbered channels, and
from the CT/VT module with the lowest slot position letter to the module with the highest slot position letter, as follows:
INCREASING SLOT POSITION LETTER -->
CT/VT MODULE 1 CT/VT MODULE 2 CT/VT MODULE 3
< bank 1 > < bank 3 > < bank 5 >
< bank 2 > < bank 4 > < bank 6 >

5 The UR platform allows for a maximum of three sets of three-phase voltages and six sets of three-phase currents. The
result of these restrictions leads to the maximum number of CT/VT modules in a chassis to three. The maximum number of
sources is six. A summary of CT/VT module configurations is shown below.
ITEM MAXIMUM NUMBER
CT/VT Module 3
CT Bank (3 phase channels, 1 ground channel) 12
VT Bank (3 phase channels, 1 auxiliary channel) 6

c) CT/VT INPUT CHANNEL CONFIGURATION

Upon relay startup, configuration settings for every bank of current or voltage input channels in the relay are automatically
generated from the order code. Within each bank, a channel identification label is automatically assigned to each bank of
channels in a given product. The ‘bank’ naming convention is based on the physical location of the channels, required by
the user to know how to connect the relay to external circuits. Bank identification consists of the letter designation of the slot
in which the CT/VT module is mounted as the first character, followed by numbers indicating the channel, either 1 or 5.
For three-phase channel sets, the number of the lowest numbered channel identifies the set. For example, F1 represents
the three-phase channel set of F1/F2/F3, where F is the slot letter and 1 is the first channel of the set of three channels.
Upon startup, the CPU configures the settings required to characterize the current and voltage inputs, and will display them
in the appropriate section in the sequence of the banks (as described above) as follows for a maximum configuration: F1,
F5, M1, M5, U1, and U5.
The above section explains how the input channels are identified and configured to the specific application instrument
transformers and the connections of these transformers. The specific parameters to be used by each measuring element
and comparator, and some actual values are controlled by selecting a specific source. The source is a group of current and
voltage input channels selected by the user to facilitate this selection. With this mechanism, a user does not have to make
multiple selections of voltage and current for those elements that need both parameters, such as a distance element or a
watt calculation. It also gathers associated parameters for display purposes.
The basic idea of arranging a source is to select a point on the power system where information is of interest. An applica-
tion example of the grouping of parameters in a Source is a transformer winding, on which a three phase voltage is mea-
sured, and the sum of the currents from CTs on each of two breakers is required to measure the winding current flow.

5-6 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

5.2PRODUCT SETUP 5.2.1 PASSWORD SECURITY

PATH: SETTINGS PRODUCT SETUP PASSWORD SECURITY

PASSWORD ACCESS LEVEL: Range: Restricted, Command, Setting,

SECURITY Restricted Factory Service (for factory use only)

CHANGE COMMAND Range: No, Yes

MESSAGE
PASSWORD: No
CHANGE SETTING Range: No, Yes
MESSAGE
PASSWORD: No
ENCRYPTED COMMAND Range: 0 to 9999999999
MESSAGE Note: ---------- indicates no password
PASSWORD: ----------
ENCRYPTED SETTING Range: 0 to 9999999999
MESSAGE Note: ---------- indicates no password
PASSWORD: ----------

Two levels of password security are provided: Command and Setting. The following command operations are under pass-
word supervision:
changing the state of virtual inputs, clearing the event records, clearing the oscillography records, changing the date
and time, clearing the data logger, user-programmable pushbuttons
The following setting operations are under password supervision:
changing any setting, test mode operation
The Command and Setting passwords are defaulted to "Null" when the relay is shipped from the factory. When a password
is set to "Null", the password security feature is disabled. 5
Programming a password code is required to enable each access level. A password consists of one to ten numerical char-
acters. When a CHANGE ... PASSWORD setting is set to “Yes”, the following message sequence is invoked:
1. ENTER NEW PASSWORD: ____________
2. VERIFY NEW PASSWORD: ____________
3. NEW PASSWORD HAS BEEN STORED
To gain write access to a "Restricted" setting, set ACCESS LEVEL to "Setting" and then change the setting, or attempt to
change the setting and follow the prompt to enter the programmed password. If the password is correctly entered, access
will be allowed. If no keys are pressed for longer than 30 minutes or control power is cycled, accessibility will automatically
revert to the "Restricted" level.
If an entered password is lost (or forgotten), consult the factory with the corresponding ENCRYPTED PASSWORD.
In the event that an incorrect Command or Setting password has been entered via the faceplate interface three times within
a three-minute time span, the LOCAL ACCESS DENIED FlexLogic™ operand will be set to “On” and the B30 will not allow
Settings or Command access via the faceplate interface for the next ten minutes. The TOO MANY ATTEMPTS – BLOCKED
FOR 10 MIN! flash message will appear upon activation of the ten minute timeout or any other time a user attempts any
change to the defined tier during the ten minute timeout. The LOCAL ACCESS DENIED FlexLogic™ operand will be set to
“Off” after the expiration of the ten-minute timeout.
In the event that an incorrect Command or Setting password has been entered via the any external communications inter-
face three times within a three-minute time span, the REMOTE ACCESS DENIED FlexLogic™ operand will be set to “On” and
the B30 will not allow Settings or Command access via the any external communications interface for the next ten minutes.
The REMOTE ACCESS DENIED FlexLogic™ operand will be set to “Off” after the expiration of the ten-minute timeout.
The B30 provides a means to raise an alarm upon failed password entry. Should password verification fail while accessing
a password-protected level of the relay (either settings or commands), the UNAUTHORIZED ACCESS FlexLogic™ operand is
asserted. The operand can be programmed to raise an alarm via contact outputs or communications. This feature can be
used to protect against both unauthorized and accidental access attempts.

GE Multilin B30 Bus Differential Relay 5-7

 5.2 PRODUCT SETUP 5 SETTINGS

The UNAUTHORIZED ACCESS operand is reset with the COMMANDS CLEAR RECORDS RESET UNAUTHORIZED
ALARMS command. Therefore, to apply this feature with security, the command level should be password-protected. The
operand does not generate events or targets. If these are required, the operand can be assigned to a digital element pro-
grammed with event logs and/or targets enabled.
If the Setting and Command passwords are identical, this one password allows access to both commands
and settings.
NOTE
When EnerVista UR Setup is used to access a particular level, the user will continue to have access to that
level as long as there are open windows in the EnerVista UR Setup software. To re-establish the password
NOTE
security feature, all windows must be closed for at least 30 minutes.

5.2.2 DISPLAY PROPERTIES

PATH: SETTINGS PRODUCT SETUP DISPLAY PROPERTIES

DISPLAY LANGUAGE: Range: English; English, French; English, Russian;

PROPERTIES English English, Chinese
(range dependent on order code)
FLASH MESSAGE Range: 0.5 to 10.0 s in steps of 0.1
MESSAGE
TIME: 1.0 s
DEFAULT MESSAGE Range: 10 to 900 s in steps of 1
MESSAGE
TIMEOUT: 300 s
DEFAULT MESSAGE Range: 25%, 50%, 75%, 100%
MESSAGE Visible only if a VFD is installed
INTENSITY: 25 %

5 MESSAGE
SCREEN SAVER
FEATURE: Disabled
Range: Disabled, Enabled
Visible only if an LCD is installed

SCREEN SAVER WAIT Range: 1 to 65535 min. in steps of 1

MESSAGE Visible only if an LCD is installed
TIME: 30 min
CURRENT CUT-OFF Range: 0.002 to 0.020 pu in steps of 0.001
MESSAGE
LEVEL: 0.020 pu
VOLTAGE CUT-OFF Range: 0.1 to 1.0 V secondary in steps of 0.1
MESSAGE
LEVEL: 1.0 V

Some relay messaging characteristics can be modified to suit different situations using the display properties settings.
• LANGUAGE: This setting selects the language used to display settings, actual values, and targets. The range is
dependent on the order code of the relay.
• FLASH MESSAGE TIME: Flash messages are status, warning, error, or information messages displayed for several
seconds in response to certain key presses during setting programming. These messages override any normal mes-
sages. The duration of a flash message on the display can be changed to accommodate different reading rates.
• DEFAULT MESSAGE TIMEOUT: If the keypad is inactive for a period of time, the relay automatically reverts to a
default message. The inactivity time is modified via this setting to ensure messages remain on the screen long enough
during programming or reading of actual values.
• DEFAULT MESSAGE INTENSITY: To extend phosphor life in the vacuum fluorescent display, the brightness can be
attenuated during default message display. During keypad interrogation, the display always operates at full brightness.
• SCREEN SAVER FEATURE and SCREEN SAVER WAIT TIME: These settings are only visible if the B30 has a liquid
crystal display (LCD) and control its backlighting. When the SCREEN SAVER FEATURE is “Enabled”, the LCD backlighting
is turned off after the DEFAULT MESSAGE TIMEOUT followed by the SCREEN SAVER WAIT TIME, providing that no keys
have been pressed and no target messages are active. When a keypress occurs or a target becomes active, the LCD
backlighting is turned on.
• CURRENT CUT-OFF LEVEL: This setting modifies the current cut-off threshold. Very low currents (1 to 2% of the
rated value) are very susceptible to noise. Some customers prefer very low currents to display as zero, while others
prefer the current be displayed even when the value reflects noise rather than the actual signal. The B30 applies a cut-
off value to the magnitudes and angles of the measured currents. If the magnitude is below the cut-off level, it is substi-

5-8 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

tuted with zero. This applies to phase and ground current phasors as well as true RMS values and symmetrical compo-
nents. The cut-off operation applies to quantities used for metering, protection, and control, as well as those used by
communications protocols. Note that the cut-off level for the sensitive ground input is 10 times lower that the CURRENT
CUT-OFF LEVEL setting value. Raw current samples available via oscillography are not subject to cut-off.

• VOLTAGE CUT-OFF LEVEL: This setting modifies the voltage cut-off threshold. Very low secondary voltage measure-
ments (at the fractional volt level) can be affected by noise. Some customers prefer these low voltages to be displayed
as zero, while others prefer the voltage to be displayed even when the value reflects noise rather than the actual sig-
nal. The B30 applies a cut-off value to the magnitudes and angles of the measured voltages. If the magnitude is below
the cut-off level, it is substituted with zero. This operation applies to phase and auxiliary voltages, and symmetrical
components. The cut-off operation applies to quantities used for metering, protection, and control, as well as those
used by communications protocols. Raw samples of the voltages available via oscillography are not subject cut-off.
Lower the VOLTAGE CUT-OFF LEVEL and CURRENT CUT-OFF LEVEL with care as the relay accepts lower signals
as valid measurements. Unless dictated otherwise by a specific application, the default settings of “0.02
NOTE
pu” for CURRENT CUT-OFF LEVEL and “1.0 V” for VOLTAGE CUT-OFF LEVEL are recommended.

5.2.3 CLEAR RELAY RECORDS

PATH: SETTINGS PRODUCT SETUP CLEAR RELAY RECORDS

CLEAR RELAY CLEAR USER REPORTS: Range: FlexLogic™ operand

RECORDS Off
CLEAR EVENT RECORDS: Range: FlexLogic™ operand
MESSAGE
Off
Range: FlexLogic™ operand
5
CLEAR OSCILLOGRAPHY?
MESSAGE
No
RESET UNAUTH ACCESS: Range: FlexLogic™ operand
MESSAGE
Off
CLEAR DIR I/O STATS: Range: FlexLogic™ operand.
MESSAGE Valid only for units with Direct I/O module.
Off

Selected records can be cleared from user-programmable conditions with FlexLogic™ operands. Assigning user-program-
mable pushbuttons to clear specific records are typical applications for these commands. Since the B30 responds to rising
edges of the configured FlexLogic™ operands, they must be asserted for at least 50 ms to take effect.
Clearing records with user-programmable operands is not protected by the command password. However, user-program-
mable pushbuttons are protected by the command password. Thus, if they are used to clear records, the user-programma-
ble pushbuttons can provide extra security if required.
For example, to assign User-Programmable Pushbutton 1 to clear demand records, the following settings should be
applied.
1. Assign the clear demand function to Pushbutton 1 by making the following change in the SETTINGS PRODUCT SETUP
CLEAR RELAY RECORDS menu:

CLEAR DEMAND: “PUSHBUTTON 1 ON”

2. Set the properties for User-Programmable Pushbutton 1 by making the following changes in the SETTINGS PRODUCT
SETUP USER-PROGRAMMABLE PUSHBUTTONS USER PUSHBUTTON 1 menu:

PUSHBUTTON 1 FUNCTION: “Self-reset”

PUSHBTN 1 DROP-OUT TIME: “0.20 s”

GE Multilin B30 Bus Differential Relay 5-9

 5.2 PRODUCT SETUP 5 SETTINGS

5.2.4 COMMUNICATIONS

a) MAIN MENU
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS

COMMUNICATIONS SERIAL PORTS

See below.

NETWORK
MESSAGE See page 5–11.

MODBUS PROTOCOL
MESSAGE See page 5–11.

DNP PROTOCOL
MESSAGE See page 5–12.

DNP / IEC104
MESSAGE See page 5–15.
POINT LISTS
IEC 61850 PROTOCOL
MESSAGE See page 5–16.

WEB SERVER
MESSAGE See page 5–18.
HTTP PROTOCOL
TFTP PROTOCOL
MESSAGE See page 5–18.

5 MESSAGE
IEC 60870-5-104
PROTOCOL
See page 5–19.

SNTP PROTOCOL
MESSAGE See page 5–19.

EGD PROTOCOL
MESSAGE See page 5–20.

b) SERIAL PORTS
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS SERIAL PORTS

SERIAL PORTS RS485 COM1 BAUD Range: 300, 1200, 2400, 4800, 9600, 14400, 19200,
RATE: 19200 28800, 33600, 38400, 57600, 115200. Only
active if CPU Type E is ordered.
RS485 COM1 PARITY: Range: None, Odd, Even
MESSAGE Only active if CPU Type E is ordered
None
RS485 COM1 RESPONSE Range: 0 to 1000 ms in steps of 10
MESSAGE Only active if CPU Type E is ordered
MIN TIME: 0 ms
RS485 COM2 BAUD Range: 300, 1200, 2400, 4800, 9600, 14400, 19200,
MESSAGE 28800, 33600, 38400, 57600, 115200
RATE: 19200
RS485 COM2 PARITY: Range: None, Odd, Even
MESSAGE
None
RS485 COM2 RESPONSE Range: 0 to 1000 ms in steps of 10
MESSAGE
MIN TIME: 0 ms

The B30 is equipped with up to 3 independent serial communication ports. The faceplate RS232 port is intended for local
use and is fixed at 19200 baud and no parity. The rear COM1 port type is selected when ordering: either an Ethernet or
RS485 port. The rear COM2 port is RS485. The RS485 ports have settings for baud rate and parity. It is important that
these parameters agree with the settings used on the computer or other equipment that is connected to these ports. Any of

5-10 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

these ports may be connected to a computer running EnerVista UR Setup. This software can download and upload setting
files, view measured parameters, and upgrade the relay firmware. A maximum of 32 relays can be daisy-chained and con-
nected to a DCS, PLC or PC using the RS485 ports.
For each RS485 port, the minimum time before the port will transmit after receiving data from a host can be
set. This feature allows operation with hosts which hold the RS485 transmitter active for some time after
NOTE
each transmission.

c) NETWORK
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS NETWORK

NETWORK IP ADDRESS: Range: Standard IP address format

0.0.0.0 Not shown if CPU Type E is ordered.

SUBNET IP MASK: Range: Standard IP address format

MESSAGE Not shown if CPU Type E is ordered.
0.0.0.0
GATEWAY IP ADDRESS: Range: Standard IP address format
MESSAGE Not shown if CPU Type E is ordered.
0.0.0.0
OSI NETWORK Range: Select to enter the OSI NETWORK ADDRESS.
MESSAGE Not shown if CPU Type E is ordered.
ADDRESS (NSAP)
ETHERNET OPERATION Range: Half-Duplex, Full-Duplex
MESSAGE Not shown if CPU Type E or N is ordered.
MODE: Full-Duplex

These messages appear only if the B30 is ordered with an Ethernet card.
The IP addresses are used with the DNP, Modbus/TCP, IEC 61580, IEC 60870-5-104, TFTP, and HTTP protocols. The
NSAP address is used with the IEC 61850 protocol over the OSI (CLNP/TP4) stack only. Each network protocol has a set- 5
ting for the TCP/UDP PORT NUMBER. These settings are used only in advanced network configurations and should normally
be left at their default values, but may be changed if required (for example, to allow access to multiple UR-series relays
behind a router). By setting a different TCP/UDP PORT NUMBER for a given protocol on each UR-series relay, the router can
map the relays to the same external IP address. The client software (EnerVista UR Setup, for example) must be configured
to use the correct port number if these settings are used.
When the NSAP address, any TCP/UDP Port Number, or any User Map setting (when used with DNP) is changed,
it will not become active until power to the relay has been cycled (OFF/ON).
NOTE
Do not set more than one protocol to use the same TCP/UDP PORT NUMBER, as this will result in unreliable
operation of those protocols.
WARNING

d) MODBUS PROTOCOL
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS MODBUS PROTOCOL

MODBUS PROTOCOL MODBUS SLAVE Range: 1 to 254 in steps of 1

ADDRESS: 254
MODBUS TCP PORT Range: 1 to 65535 in steps of 1
MESSAGE
NUMBER: 502

The serial communication ports utilize the Modbus protocol, unless configured for DNP or IEC 60870-5-104 operation (see
descriptions below). This allows the EnerVista UR Setup software to be used. The UR operates as a Modbus slave device
only. When using Modbus protocol on the RS232 port, the B30 will respond regardless of the MODBUS SLAVE ADDRESS pro-
grammed. For the RS485 ports each B30 must have a unique address from 1 to 254. Address 0 is the broadcast address
which all Modbus slave devices listen to. Addresses do not have to be sequential, but no two devices can have the same
address or conflicts resulting in errors will occur. Generally, each device added to the link should use the next higher
address starting at 1. Refer to Appendix B for more information on the Modbus protocol.
Changes to the MODBUS TCP PORT NUMBER setting will not take effect until the B30 is restarted.

NOTE

GE Multilin B30 Bus Differential Relay 5-11

 5.2 PRODUCT SETUP 5 SETTINGS

e) DNP PROTOCOL
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS DNP PROTOCOL

DNP PROTOCOL DNP CHANNELS Range: see sub-menu below

DNP ADDRESS: Range: 0 to 65519 in steps of 1

MESSAGE
65519
DNP NETWORK Range: see sub-menu below
MESSAGE
CLIENT ADDRESSES
DNP TCP/UDP PORT Range: 1 to 65535 in steps of 1
MESSAGE
NUMBER: 20000
DNP UNSOL RESPONSE Range: Enabled, Disabled
MESSAGE
FUNCTION: Disabled
DNP UNSOL RESPONSE Range: 0 to 60 s in steps of 1
MESSAGE
TIMEOUT: 5 s
DNP UNSOL RESPONSE Range: 1 to 255 in steps of 1
MESSAGE
MAX RETRIES: 10
DNP UNSOL RESPONSE Range: 0 to 65519 in steps of 1
MESSAGE
DEST ADDRESS: 1
DNP CURRENT SCALE Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
MESSAGE 100000

5
FACTOR: 1
DNP VOLTAGE SCALE Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
MESSAGE 100000
FACTOR: 1
DNP POWER SCALE Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
MESSAGE 100000
FACTOR: 1
DNP ENERGY SCALE Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
MESSAGE 100000
FACTOR: 1
DNP OTHER SCALE Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
MESSAGE 100000
FACTOR: 1
DNP CURRENT DEFAULT Range: 0 to 65535 in steps of 1
MESSAGE
DEADBAND: 30000
DNP VOLTAGE DEFAULT Range: 0 to 65535 in steps of 1
MESSAGE
DEADBAND: 30000
DNP POWER DEFAULT Range: 0 to 65535 in steps of 1
MESSAGE
DEADBAND: 30000
DNP ENERGY DEFAULT Range: 0 to 65535 in steps of 1
MESSAGE
DEADBAND: 30000
DNP OTHER DEFAULT Range: 0 to 65535 in steps of 1
MESSAGE
DEADBAND: 30000
DNP TIME SYNC IIN Range: 1 to 10080 min. in steps of 1
MESSAGE
PERIOD: 1440 min
DNP MESSAGE FRAGMENT Range: 30 to 2048 in steps of 1
MESSAGE
SIZE: 240
DNP OBJECT 1 Range: 1, 2
MESSAGE
DEFAULT VARIATION: 2

5-12 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

DNP OBJECT 2 Range: 1, 2

MESSAGE
DEFAULT VARIATION: 2
DNP OBJECT 20 Range: 1, 2, 5, 6
MESSAGE
DEFAULT VARIATION: 1
DNP OBJECT 21 Range: 1, 2, 9, 10
MESSAGE
DEFAULT VARIATION: 1
DNP OBJECT 22 Range: 1, 2, 5, 6
MESSAGE
DEFAULT VARIATION: 1
DNP OBJECT 23 Range: 1, 2, 5, 6
MESSAGE
DEFAULT VARIATION: 2
DNP OBJECT 30 Range: 1, 2, 3, 4, 5
MESSAGE
DEFAULT VARIATION: 1
DNP OBJECT 32 Range: 1, 2, 3, 4, 5, 7
MESSAGE
DEFAULT VARIATION: 1
DNP NUMBER OF PAIRED Range: 0 to 32 in steps of 1
MESSAGE
CONTROL POINTS: 0

The B30 supports the Distributed Network Protocol (DNP) version 3.0. The B30 can be used as a DNP slave device con-
nected to multiple DNP masters (usually an RTU or a SCADA master station). Since the B30 maintains two sets of DNP
data change buffers and connection information, two DNP masters can actively communicate with the B30 at one time.
The DNP Channels sub-menu is shown below.
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS DNP PROTOCOL DNP CHANNELS 5
DNP CHANNELS DNP CHANNEL 1 PORT: Range: NONE, COM1 - RS485, COM2 - RS485,
NETWORK FRONT PANEL - RS232, NETWORK - TCP,
NETWORK - UDP
DNP CHANNEL 2 PORT: Range: NONE, COM1 - RS485, COM2 - RS485,
MESSAGE FRONT PANEL - RS232, NETWORK - TCP,
COM2 - RS485
NETWORK - UDP

The DNP CHANNEL 1(2) PORT settings select the communications port assigned to the DNP protocol for each channel. Once
DNP is assigned to a serial port, the Modbus protocol is disabled on that port. Note that COM1 can be used only in non-
Ethernet UR relays. When this setting is set to “Network - TCP”, the DNP protocol can be used over TCP/IP on channels 1
or 2. When this value is set to “Network - UDP”, the DNP protocol can be used over UDP/IP on channel 1 only. Refer to
Appendix E for additional information on the DNP protocol.
Changes to the DNP CHANNEL 1(2) PORT settings will take effect only after power has been cycled to the relay.

NOTE

The DNP NETWORK CLIENT ADDRESS settings can force the B30 to respond to a maximum of five specific DNP masters. The
settings in this sub-menu are shown below.

GE Multilin B30 Bus Differential Relay 5-13

 5.2 PRODUCT SETUP 5 SETTINGS

PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS DNP PROTOCOL DNP NETWORK CLIENT ADDRESSES

DNP NETWORK CLIENT ADDRESS 1: Range: standard IP address

CLIENT ADDRESSES 0.0.0.0
CLIENT ADDRESS 2: Range: standard IP address
MESSAGE
0.0.0.0
CLIENT ADDRESS 3: Range: standard IP address
MESSAGE
0.0.0.0
CLIENT ADDRESS 4: Range: standard IP address
MESSAGE
0.0.0.0
CLIENT ADDRESS 5: Range: standard IP address
MESSAGE
0.0.0.0

The DNP UNSOL RESPONSE FUNCTION should be “Disabled” for RS485 applications since there is no collision avoidance
mechanism. The DNP UNSOL RESPONSE TIMEOUT sets the time the B30 waits for a DNP master to confirm an unsolicited
response. The DNP UNSOL RESPONSE MAX RETRIES setting determines the number of times the B30 retransmits an unsolic-
ited response without receiving confirmation from the master; a value of “255” allows infinite re-tries. The DNP UNSOL
RESPONSE DEST ADDRESS is the DNP address to which all unsolicited responses are sent. The IP address to which unsolic-
ited responses are sent is determined by the B30 from the current TCP connection or the most recent UDP message.
The DNP SCALE FACTOR settings are numbers used to scale Analog Input point values. These settings group the B30 Ana-
log Input data into types: current, voltage, power, energy, and other. Each setting represents the scale factor for all Analog
Input points of that type. For example, if the DNP VOLTAGE SCALE FACTOR setting is set to a value of 1000, all DNP Analog
Input points that are voltages will be returned with values 1000 times smaller (e.g. a value of 72000 V on the B30 will be
5 returned as 72). These settings are useful when analog input values must be adjusted to fit within certain ranges in DNP
masters. Note that a scale factor of 0.1 is equivalent to a multiplier of 10 (i.e. the value will be 10 times larger).
The DNP DEFAULT DEADBAND settings determine when to trigger unsolicited responses containing Analog Input data. These
settings group the B30 Analog Input data into types: current, voltage, power, energy, and other. Each setting represents the
default deadband value for all Analog Input points of that type. For example, to trigger unsolicited responses from the B30
when any current values change by 15 A, the DNP CURRENT DEFAULT DEADBAND setting should be set to “15”. Note that
these settings are the deadband default values. DNP Object 34 points can be used to change deadband values, from the
default, for each individual DNP Analog Input point. Whenever power is removed and re-applied to the B30, the default
deadbands will be in effect.
The B30 relay does not support power and energy metering. As such, the DNP POWER SCALE FACTOR, DNP POWER
DEFAULT DEADBAND, DNP ENERGY SCALE FACTOR and DNP ENERGY DEFAULT DEADBAND settings are not applicable.
NOTE

The DNP TIME SYNC IIN PERIOD setting determines how often the Need Time Internal Indication (IIN) bit is set by the B30.
Changing this time allows the DNP master to send time synchronization commands more or less often, as required.
The DNP MESSAGE FRAGMENT SIZE setting determines the size, in bytes, at which message fragmentation occurs. Large
fragment sizes allow for more efficient throughput; smaller fragment sizes cause more application layer confirmations to be
necessary which can provide for more robust data transfer over noisy communication channels.
When the DNP data points (analog inputs and/or binary inputs) are configured for Ethernet-enabled relays,
check the “DNP Points Lists” B30 web page to view the points lists. This page can be viewed with a web
NOTE
browser by entering the B30 IP address to access the B30 “Main Menu”, then by selecting the “Device
Information Menu” > “DNP Points Lists” menu item.
The DNP OBJECT N DEFAULT VARIATION settings allow the user to select the DNP default variation number for object types 1,
2, 20, 21, 22, 23, 30, and 32. The default variation refers to the variation response when variation 0 is requested and/or in
class 0, 1, 2, or 3 scans. Refer to the DNP Implementation section in Appendix E for additional details.
The DNP binary outputs typically map one-to-one to IED data points. That is, each DNP binary output controls a single
physical or virtual control point in an IED. In the B30 relay, DNP binary outputs are mapped to virtual inputs. However, some
legacy DNP implementations use a mapping of one DNP binary output to two physical or virtual control points to support
the concept of trip/close (for circuit breakers) or raise/lower (for tap changers) using a single control point. That is, the DNP
master can operate a single point for both trip and close, or raise and lower, operations. The B30 can be configured to sup-

5-14 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

port paired control points, with each paired control point operating two virtual inputs. The DNP NUMBER OF PAIRED CONTROL
POINTS setting allows configuration of from 0 to 32 binary output paired controls. Points not configured as paired operate on
a one-to-one basis.
The DNP ADDRESS setting is the DNP slave address. This number identifies the B30 on a DNP communications link. Each
DNP slave should be assigned a unique address.

f) DNP / IEC 60870-5-104 POINT LISTS

PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS DNP / IEC104 POINT LISTS

DNP / IEC104 BINARY INPUT / MSP Range: see sub-menu below

POINT LISTS POINTS
ANALOG INPUT / MME Range: see sub-menu below
MESSAGE
POINTS

The binary and analog inputs points for the DNP protocol, or the MSP and MME points for IEC 60870-5-104 protocol, can
configured to a maximum of 256 points. The value for each point is user-programmable and can be configured by assigning
FlexLogic™ operands for binary inputs / MSP points or FlexAnalog parameters for analog inputs / MME points.
The menu for the binary input points (DNP) or MSP points (IEC 60870-5-104) is shown below.
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS DNP / IEC104 POINT LISTS BINARY INPUT / MSP POINTS

BINARY INPUT / MSP Point: 0 Range: FlexLogic™ operand

POINTS Off
Point: 1 Range: FlexLogic™ operand
MESSAGE

5
Off
↓

Point: 255 Range: FlexLogic™ operand

MESSAGE
Off

Up to 256 binary input points can be configured for the DNP or IEC 60870-5-104 protocols. The points are configured by
assigning an appropriate FlexLogic™ operand. Refer to the Introduction to FlexLogic™ section in this chapter for the full
range of assignable operands.
The menu for the analog input points (DNP) or MME points (IEC 60870-5-104) is shown below.
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS DNP / IEC104 POINT LISTS ANALOG INPUT / MME POINTS

ANALOG INPUT / MME Point: 0 Range: any FlexAnalog parameter

POINTS Off
Point: 1 Range: any FlexAnalog parameter
MESSAGE
Off
↓

Point: 255 Range: any FlexAnalog parameter

MESSAGE
Off

Up to 256 analog input points can be configured for the DNP or IEC 60870-5-104 protocols. The analog point list is config-
ured by assigning an appropriate FlexAnalog parameter to each point. Refer to Appendix A: FlexAnalog Parameters for the
full range of assignable parameters.
The DNP / IEC 60870-5-104 point lists always begin with point 0 and end at the first “Off” value. Since DNP /
IEC 60870-5-104 point lists must be in one continuous block, any points assigned after the first “Off” point
NOTE
are ignored.
Changes to the DNP / IEC 60870-5-104 point lists will not take effect until the B30 is restarted.

NOTE

GE Multilin B30 Bus Differential Relay 5-15

 5.2 PRODUCT SETUP 5 SETTINGS

g) IEC 61850 PROTOCOL

PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS IEC 61850 PROTOCOL GSSE / GOOSE CONFIGURATION

GSSE / GOOSE REMOTE I/O TRANSFER Range: None, GSSE, GOOSE

CONFIGURATION METHOD: GSSE

DEFAULT GSSE/GOOSE: Range: 1 to 60 s in steps of 1

MESSAGE
UPDATE TIME: 60 s

GOOSE TRANSMIT VLAN Range: 0 to 7 in steps of 1

MESSAGE
PRIORITY: 4

GOOSE TRANSMIT VLAN Range: 0 to 4095 in steps of 1

MESSAGE
ID: 0

GOOSE TRANSMIT Range: 0 to 16383 in steps of 1

MESSAGE
ETYPE APPID: 0

SERVER LD NAME: IECDevice Range: up to 32 alphanumeric characters

CONFIGURATION

IEC/MMS TCP PORT Range: 1 to 65535 in steps of 1

MESSAGE
NUMBER: 102

INCLUDE NON-IEC Range: Disabled, Enabled

MESSAGE
DATA: Enabled

NUMBER OF STATUS Range: 8 to 128 in steps of 8

MESSAGE
5 POINTS IN GGIO1: 8
Range: Disabled, Enabled
SERVER SCANNING:
MESSAGE
Disabled

IEC 61850 LOGICAL PIOC LOGICAL NODE

NODE NAME PREFIXES NAME PREFIXES

PTOC LOGICAL NODE

MESSAGE
NAME PREFIXES
↓

PTRC LOGICAL NODE

MESSAGE
NAME PREFIXES

MMXU DEADBANDS MMXU1 DEADBANDS

MMXU2 DEADBANDS
MESSAGE

MMXU3 DEADBANDS
MESSAGE

MMXU4 DEADBANDS
MESSAGE

GGIO2 CONTROL GGIO2 CF SPCSO 1

CONFIGURATION

GGIO2 CF SPCSO 2
MESSAGE

GGIO2 CF SPCSO64
MESSAGE

5-16 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

The B30 Bus Differential Relay is provided with optional IEC 61850 communications capability. This fea-
ture is specified as a software option at the time of ordering. Refer to the Ordering section of chapter 2 for
additional details. The IEC 61850 protocol feature are not available if CPU Type E is ordered.

The B30 supports the Manufacturing Message Specification (MMS) protocol as specified by IEC 61850. MMS is supported
over two protocol stacks: TCP/IP over ethernet and TP4/CLNP (OSI) over ethernet. The B30 operates as an IEC 61850
server. The Remote Inputs/Outputs section in this chapter describe the peer-to-peer GSSE/GOOSE message scheme.
The REMOTE I/O TRANSFER METHOD selects the method used to transfer remote input/output data. This can be either IEC
61850 GSSE, IEC 61850 GOOSE, or none (remote inputs/outputs disabled). GOOSE messages are more efficient and can
make use of Ethernet priority tagging and virtual LAN functionality. All relays exchanging remote input/output data must be
set to the same transfer method.
The DEFAULT GSSE/GOOSE UPDATE TIME sets the time between GSSE or GOOSE messages when there are no remote out-
put state changes to be sent. When remote output data changes, GSSE or GOOSE messages are sent immediately. This
setting controls the steady-state ‘heartbeat’ time interval.
The GOOSE TRANSMIT VLAN PRIORITY setting indicates the Ethernet priority of GOOSE messages. This allows GOOSE
messages to have higher priority than other Ethernet data. The GOOSE TRANSMIT ETYPE APPID setting allows the selection
of a specific application ID for each GOOSE sending device. This value can be left at its default if the feature is not
required. Both the GOOSE TRANSMIT VLAN PRIORITY and GOOSE TRANSMIT ETYPE APPID settings are required by IEC 61850.
The LD NAME setting represents the MMS domain name (IEC 61850 logical device) where all IEC/MMS logical nodes are
located. The IEC/MMS TCP PORT NUMBER setting allows the user to change the TCP port number for MMS connections. The
INCLUDE NON-IEC DATA setting determines whether or not the “UR” MMS domain will be available. This domain contains a
large number of UR-series specific data items that are not available in the IEC 61850 logical nodes. This data does not fol-
low the IEC 61850 naming conventions. For communications schemes that strictly follow the IEC 61850 standard, this set- 5
ting should be “Disabled”.
The NUMBER OF STATUS POINTS IN GGIO1 setting determines the number of “Ind” (single point status indications) that are
instantiated in the GGIO1 logical node. The indication points in GGIO1 are mapped to FlexStates in the B30. These Flex-
States allow user-customized access to the FlexLogic™ operand states in the relay.
The SERVER SCANNING feature should be set to “Disabled” when IEC 61850 client/server functionality is not required. IEC
61850 has two modes of functionality: GOOSE/GSSE inter-device communication and client/server communication. If the
GOOSE/GSSE functionality is required without the IEC 61850 client server feature, then server scanning can be disabled
to increase CPU resources. When server scanning is disabled, there will be not updated to the IEC 61850 logical node sta-
tus values in the B30. Clients will still be able to connect to the server (B30 relay), but most data values will not be updated.
This setting does not affect GOOSE/GSSE operation.
Changes to the LD NAME, NUMBER OF STATUS POINTS IN GGIO1, and SERVER SCANNING settings will not take effect
until the B30 is restarted.
NOTE

The IEC 61850 logical node name prefix settings are used to create name prefixes to uniquely identify each logical node.
For example, the logical node “PTOC1” may have the name prefix “abc”. The full logical node name will then be
“abcMMXU1”. Valid characters for the logical node name prefixes are upper and lowercase letters, numbers, and the
underscore (_) character, and the first character in the prefix must be a letter. This conforms to the IEC 61850 standard.
The MMXU deadband settings represent the deadband values used to determine when the update the MMXU “mag” and
“cVal” values from the associated “instmag” and “instcVal” values. The “mag” and “cVal” values are used for the IEC 61850
buffered and unbuffered reports. These settings correspond to the associated “db” data items in the CF functional con-
straint of the MMXU logical node, as per the IEC 61850 standard. According to IEC 61850-7-3, the db value “shall repre-
sent the percentage of difference between the maximum and minimum in units of 0.00%”. Thus, it is important to know the
maximum value for each MMXU measured quantity, since this represents the 100.00% value for the deadband.
The minimum value for all quantities is 0; the maximum values are as follows:
phase current: 46 × phase CT primary setting
neutral current: 46 × ground CT primary setting
voltage: 275 × VT ratio setting

GE Multilin B30 Bus Differential Relay 5-17

 5.2 PRODUCT SETUP 5 SETTINGS

power (real, reactive, and apparent): 46 × phase CT primary setting × 275 × VT ratio setting
frequency: 90 Hz
power factor: 2
The GGIO2 control configuration settings are used to set the control model for each input. The available choices are “0”
(status only), “1” (direct control), and “2” (SBO with normal security). The GGIO2 control points are used to control the B30
virtual inputs.
Since GSSE/GOOSE messages are multicast ethernet by specification, they will not usually be forwarded by net-
work routers. However, GOOSE messages may be fowarded by routers if the router has been configured for VLAN
NOTE
functionality.

h) WEB SERVER HTTP PROTOCOL

PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS WEB SERVER HTTP PROTOCOL

WEB SERVER HTTP TCP PORT Range: 1 to 65535 in steps of 1

HTTP PROTOCOL NUMBER: 80

The B30 contains an embedded web server and is capable of transferring web pages to a web browser such as Microsoft
Internet Explorer or Netscape Navigator. This feature is available only if the B30 has the ethernet option installed. The web
pages are organized as a series of menus that can be accessed starting at the B30 “Main Menu”. Web pages are available
showing DNP and IEC 60870-5-104 points lists, Modbus registers, Event Records, Fault Reports, etc. The web pages can
be accessed by connecting the UR and a computer to an ethernet network. The Main Menu will be displayed in the web
browser on the computer simply by entering the IP address of the B30 into the “Address” box on the web browser.

i) TFTP PROTOCOL

5 PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS TFTP PROTOCOL

Range: 1 to 65535 in steps of 1

TFTP PROTOCOL TFTP MAIN UDP PORT
NUMBER: 69
TFTP DATA UDP PORT 1 Range: 0 to 65535 in steps of 1
MESSAGE
NUMBER: 0
TFTP DATA UDP PORT 2 Range: 0 to 65535 in steps of 1
MESSAGE
NUMBER: 0

The Trivial File Transfer Protocol (TFTP) can be used to transfer files from the B30 over a network. The B30 operates as a
TFTP server. TFTP client software is available from various sources, including Microsoft Windows NT. The dir.txt file
obtained from the B30 contains a list and description of all available files (event records, oscillography, etc.).

5-18 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

j) IEC 60870-5-104 PROTOCOL

PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS IEC 60870-5-104 PROTOCOL

IEC 60870-5-104 IEC 60870-5-104 Range: Enabled, Disabled

PROTOCOL FUNCTION: Disabled
IEC TCP PORT Range: 1 to 65535 in steps of 1
MESSAGE
NUMBER: 2404
IEC NETWORK
MESSAGE
CLIENT ADDRESSES
IEC COMMON ADDRESS Range: 0 to 65535 in steps of 1
MESSAGE
OF ASDU: 0
IEC CYCLIC DATA Range: 1 to 65535 s in steps of 1
MESSAGE
PERIOD: 60 s
IEC CURRENT DEFAULT Range: 0 to 65535 in steps of 1
MESSAGE
THRESHOLD: 30000
IEC VOLTAGE DEFAULT Range: 0 to 65535 in steps of 1
MESSAGE
THRESHOLD: 30000
IEC POWER DEFAULT Range: 0 to 65535 in steps of 1
MESSAGE
THRESHOLD: 30000
IEC ENERGY DEFAULT Range: 0 to 65535 in steps of 1
MESSAGE
THRESHOLD: 30000
IEC OTHER DEFAULT Range: 0 to 65535 in steps of 1 5
MESSAGE
THRESHOLD: 30000

The B30 supports the IEC 60870-5-104 protocol. The B30 can be used as an IEC 60870-5-104 slave device connected to
a maximum of two masters (usually either an RTU or a SCADA master station). Since the B30 maintains two sets of IEC
60870-5-104 data change buffers, no more than two masters should actively communicate with the B30 at one time.
The IEC ------- DEFAULT THRESHOLD settings are used to determine when to trigger spontaneous responses containing
M_ME_NC_1 analog data. These settings group the B30 analog data into types: current, voltage, power, energy, and other.
Each setting represents the default threshold value for all M_ME_NC_1 analog points of that type. For example, to trigger
spontaneous responses from the B30 when any current values change by 15 A, the IEC CURRENT DEFAULT THRESHOLD set-
ting should be set to 15. Note that these settings are the default values of the deadbands. P_ME_NC_1 (parameter of mea-
sured value, short floating point value) points can be used to change threshold values, from the default, for each individual
M_ME_NC_1 analog point. Whenever power is removed and re-applied to the B30, the default thresholds will be in effect.
The B30 relay does not support power and energy metering. As such, the IEC POWER DEFAULT THRESHOLD and IEC
ENERGY DEFAULT THRESHOLD settings are not applicable.
NOTE

The IEC 60870-5-104 and DNP protocols can not be used at the same time. When the IEC 60870-5-104 FUNC-
TION setting is set to “Enabled”, the DNP protocol will not be operational. When this setting is changed it
NOTE
will not become active until power to the relay has been cycled (Off/On).

k) SNTP PROTOCOL
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS SNTP PROTOCOL

SNTP PROTOCOL SNTP FUNCTION: Range: Enabled, Disabled

Disabled
SNTP SERVER IP ADDR: Range: Standard IP address format
MESSAGE
0.0.0.0
SNTP UDP PORT Range: 0 to 65535 in steps of 1
MESSAGE
NUMBER: 123

GE Multilin B30 Bus Differential Relay 5-19

 5.2 PRODUCT SETUP 5 SETTINGS

The B30 supports the Simple Network Time Protocol specified in RFC-2030. With SNTP, the B30 can obtain clock time
over an Ethernet network. The B30 acts as an SNTP client to receive time values from an SNTP/NTP server, usually a ded-
icated product using a GPS receiver to provide an accurate time. Both unicast and broadcast SNTP are supported.
If SNTP functionality is enabled at the same time as IRIG-B, the IRIG-B signal provides the time value to the B30 clock for
as long as a valid signal is present. If the IRIG-B signal is removed, the time obtained from the SNTP server is used. If
either SNTP or IRIG-B is enabled, the B30 clock value cannot be changed using the front panel keypad.
To use SNTP in unicast mode, SNTP SERVER IP ADDR must be set to the SNTP/NTP server IP address. Once this address is
set and SNTP FUNCTION is “Enabled”, the B30 attempts to obtain time values from the SNTP/NTP server. Since many time
values are obtained and averaged, it generally takes three to four minutes until the B30 clock is closely synchronized with
the SNTP/NTP server. It may take up to two minutes for the B30 to signal an SNTP self-test error if the server is offline.
To use SNTP in broadcast mode, set the SNTP SERVER IP ADDR setting to “0.0.0.0” and SNTP FUNCTION to “Enabled”. The
B30 then listens to SNTP messages sent to the “all ones” broadcast address for the subnet. The B30 waits up to eighteen
minutes (>1024 seconds) without receiving an SNTP broadcast message before signaling an SNTP self-test error.
The UR-series relays do not support the multicast or anycast SNTP functionality.

l) EGD PROTOCOL
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS EGD PROTOCOL

EGD PROTOCOL FAST PROD EXCH 1

CONFIGURATION
SLOW PROD EXCH 1
MESSAGE
CONFIGURATION

5
SLOW PROD EXCH 2
MESSAGE
CONFIGURATION

The B30 Bus Differential Relay is provided with optional Ethernet Global Data (EGD) communications
capability. This feature is specified as a software option at the time of ordering. Refer to the Ordering sec-
tion of chapter 2 for additional details. The Ethernet Global Data (EGD) protocol feature is not available if
CPU Type E is ordered.

The relay supports one fast Ethernet Global Data (EGD) exchange and two slow EGD exchanges. There are 20 data items
in the fast-produced EGD exchange and 50 data items in each slow-produced exchange.
Ethernet Global Data (EGD) is a suite of protocols used for the real-time transfer of data for display and control purposes.
The relay can be configured to ‘produce’ EGD data exchanges, and other devices can be configured to ‘consume’ EGD
data exchanges. The number of produced exchanges (up to three), the data items in each exchange (up to 50), and the
exchange production rate can be configured.
EGD cannot be used to transfer data between UR-series relays. The relay supports EGD production only. An EGD
exchange will not be transmitted unless the destination address is non-zero, and at least the first data item address is set to
a valid Modbus register address. Note that the default setting value of “0” is considered invalid.

5-20 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

The settings menu for the fast EGD exchange is shown below:
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS EGD PROTOCOL FAST PROD EXCH 1 CONFIGURATION

FAST PROD EXCH 1 EXCH 1 FUNCTION: Range: Disable, Enable

CONFIGURATION Disable
EXCH 1 DESTINATION: Range: standard IP address
MESSAGE
0.0.0.0
EXCH 1 DATA RATE: Range: 50 to 1000 ms in steps of 1
MESSAGE
1000 ms
EXCH 1 DATA ITEM 1: Range: 0 to 65535 in steps of 1
MESSAGE (Modbus register address range)
0
↓

EXCH 1 DATA ITEM 20: Range: 0 to 65535 in steps of 1

MESSAGE (Modbus register address range)
0

Fast exchanges (50 to 1000 ms) are generally used in control schemes. The B30 has one fast exchange (Exchange 1) and
two slow exchanges (Exchanges 2 and 3).
The settings menu for the slow EGD exchanges is shown below:
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS EGD PROTOCOL SLOW PROD EXCH 1(2) CONFIGURATION

SLOW PROD EXCH 1 EXCH 1 FUNCTION: Range: Disable, Enable

CONFIGURATION Disable

MESSAGE
EXCH 1 DESTINATION: Range: standard IP address 5
0.0.0.0
EXCH 1 DATA RATE: Range: 500 to 1000 ms in steps of 1
MESSAGE
1000 ms
EXCH 1 DATA ITEM 1: Range: 0 to 65535 in steps of 1
MESSAGE (Modbus register address range in decimal)
0
↓

EXCH 1 DATA ITEM 50: Range: 0 to 65535 in steps of 1

MESSAGE (Modbus register address range in decimal)
0

Slow EGD exchanges (500 to 1000 ms) are generally used for the transfer and display of data items. The settings for the
fast and slow exchanges are described below:
• EXCH 1 DESTINATION: This setting specifies the destination IP address of the produced EGD exchange. This is usu-
ally unicast or broadcast.
• EXCH 1 DATA RATE: This setting specifies the rate at which this EGD exchange is transmitted. If the setting is 50 ms,
the exchange data will be updated and sent once every 50 ms. If the setting is 1000 ms, the exchange data will be
updated and sent once per second. EGD exchange 1 has a setting range of 50 to 1000 ms. Exchanges 2 and 3 have a
setting range of 500 to 1000 ms.
• EXCH 1 DATA ITEM 1 to 20/50: These settings specify the data items that are part of this EGD exchange. Almost any
data from the B30 memory map can be configured to be included in an EGD exchange. The settings are the starting
Modbus register address for the data item in decimal format. Refer to Appendix B for the complete Modbus memory
map. Note that the Modbus memory map displays shows addresses in hexadecimal format; as such, it will be neces-
sary to convert these values to decimal format before entering them as values for these setpoints.
To select a data item to be part of an exchange, it is only necessary to choose the starting Modbus address of the item.
That is, for items occupying more than one Modbus register (e.g. 32 bit integers and floating point values), only the first
Modbus address is required. The EGD exchange configured with these settings contains the data items up to the first
setting that contains a Modbus address with no data, or 0. That is, if the first three settings contain valid Modbus
addresses and the fourth is 0, the produced EGD exchange will contain three data items.

GE Multilin B30 Bus Differential Relay 5-21

 5.2 PRODUCT SETUP 5 SETTINGS

5.2.5 MODBUS USER MAP

PATH: SETTINGS PRODUCT SETUP MODBUS USER MAP

MODBUS USER MAP ADDRESS 1: 0 Range: 0 to 65535 in steps of 1

VALUE: 0
↓

ADDRESS 256: 0 Range: 0 to 65535 in steps of 1

MESSAGE
VALUE: 0

The Modbus User Map provides read-only access for up to 256 registers. To obtain a memory map value, enter the desired
address in the ADDRESS line (this value must be converted from hex to decimal format). The corresponding value is dis-
played in the VALUE line. A value of “0” in subsequent register ADDRESS lines automatically returns values for the previous
ADDRESS lines incremented by “1”. An address value of “0” in the initial register means “none” and values of “0” will be dis-
played for all registers. Different ADDRESS values can be entered as required in any of the register positions.

5.2.6 REAL TIME CLOCK

PATH: SETTINGS PRODUCT SETUP REAL TIME CLOCK

REAL TIME IRIG-B SIGNAL TYPE: Range: None, DC Shift, Amplitude Modulated
CLOCK None
REAL TIME CLOCK Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled
5 The date and time can be synchronized a known time base and to other relays using an IRIG-B signal. It has the same
accuracy as an electronic watch, approximately ±1 minute per month. If an IRIG-B signal is connected to the relay, only the
current year needs to be entered. See the COMMANDS SET DATE AND TIME menu to manually set the relay clock.

The REAL TIME CLOCK EVENTS setting allows changes to the date and/or time to be captured in the event record.

5.2.7 USER-PROGRAMMABLE FAULT REPORT

PATH: SETTINGS PRODUCT SETUP USER-PROGRAMMABLE FAULT REPORT USER-PROGRAMMABLE FAULT REPORT 1(2)

USER-PROGRAMMABLE FAULT REPORT 1 Range: Disabled, Enabled

FAULT REPORT 1 FUNCTION: Disabled
PRE-FAULT 1 TRIGGER: Range: FlexLogic™ operand
MESSAGE
Off
FAULT 1 TRIGGER: Range: FlexLogic™ operand
MESSAGE
Off
FAULT REPORT 1 #1: Range: Off, any actual value analog parameter
MESSAGE
Off
FAULT REPORT 1 #2: Range: Off, any actual value analog parameter
MESSAGE
Off
↓

FAULT REPORT 1 #32: Range: Off, any actual value analog parameter
MESSAGE
Off

When enabled, this function monitors the pre-fault trigger. The pre-fault data are stored in the memory for prospective cre-
ation of the fault report on the rising edge of the pre-fault trigger. The element waits for the fault trigger as long as the pre-
fault trigger is asserted, but not shorter than 1 second. When the fault trigger occurs, the fault data is stored and the com-
plete report is created. If the fault trigger does not occur within 1 second after the pre-fault trigger drops out, the element
resets and no record is created.

5-22 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

The user programmable record contains the following information: the user-programmed relay name, detailed firmware
revision (4.9x, for example) and relay model (B30), the date and time of trigger, the name of pre-fault trigger (specific Flex-
Logic™ operand), the name of fault trigger (specific FlexLogic™ operand), the active setting group at pre-fault trigger, the
active setting group at fault trigger, pre-fault values of all programmed analog channels (one cycle before pre-fault trigger),
and fault values of all programmed analog channels (at the fault trigger).
Each fault report is stored as a file to a maximum capacity of ten files. An eleventh trigger overwrites the oldest file. The
EnerVista UR Setup software is required to view all captured data. A FAULT RPT TRIG event is automatically created when
the report is triggered.
The relay includes two user-programmable fault reports to enable capture of two types of trips (for example, trip from ther-
mal protection with the report configured to include temperatures, and short-circuit trip with the report configured to include
voltages and currents). Both reports feed the same report file queue.
The last record is available as individual data items via communications protocols.
• PRE-FAULT 1 TRIGGER: Specifies the FlexLogic™ operand to capture the pre-fault data. The rising edge of this
operand stores one cycle-old data for subsequent reporting. The element waits for the fault trigger to actually create a
record as long as the operand selected as PRE-FAULT TRIGGER is “On”. If the operand remains “Off” for 1 second, the
element resets and no record is created.
• FAULT 1 TRIGGER: Specifies the FlexLogic™ operand to capture the fault data. The rising edge of this operand
stores the data as fault data and results in a new report. The trigger (not the pre-fault trigger) controls the date and time
of the report.
• FAULT REPORT 1 #1 to #32: These settings specify an actual value such as voltage or current magnitude, true RMS,
phase angle, frequency, temperature, etc., to be stored should the report be created. Up to 32 channels can be config-
ured. Two reports are configurable to cope with variety of trip conditions and items of interest.

5.2.8 OSCILLOGRAPHY 5
a) MAIN MENU
PATH: SETTINGS PRODUCT SETUP OSCILLOGRAPHY

OSCILLOGRAPHY NUMBER OF RECORDS: Range: 1 to 64 in steps of 1

15
TRIGGER MODE: Range: Automatic Overwrite, Protected
MESSAGE
Automatic Overwrite
TRIGGER POSITION: Range: 0 to 100% in steps of 1
MESSAGE
50%
TRIGGER SOURCE: Range: FlexLogic™ operand
MESSAGE
Off
AC INPUT WAVEFORMS: Range: Off; 8, 16, 32, 64 samples/cycle
MESSAGE
16 samples/cycle
DIGITAL CHANNELS
MESSAGE

ANALOG CHANNELS
MESSAGE

Oscillography records contain waveforms captured at the sampling rate as well as other relay data at the point of trigger.
Oscillography records are triggered by a programmable FlexLogic™ operand. Multiple oscillography records may be cap-
tured simultaneously.
The NUMBER OF RECORDS is selectable, but the number of cycles captured in a single record varies considerably based on
other factors such as sample rate and the number of operational CT/VT modules. There is a fixed amount of data storage
for oscillography; the more data captured, the less the number of cycles captured per record. See the ACTUAL VALUES
RECORDS OSCILLOGRAPHY menu to view the number of cycles captured per record. The following table provides sam-
ple configurations with corresponding cycles/record.

GE Multilin B30 Bus Differential Relay 5-23

 5.2 PRODUCT SETUP 5 SETTINGS

Table 5–1: OSCILLOGRAPHY CYCLES/RECORD EXAMPLE

# RECORDS # CT/VTS SAMPLE # DIGITALS # ANALOGS CYCLES/
RATE RECORD
1 1 8 0 0 1872.0
1 1 16 16 0 1685.0
8 1 16 16 0 276.0
8 1 16 16 4 219.5
8 2 16 16 4 93.5
8 2 16 64 16 93.5
8 2 32 64 16 57.6
8 2 64 64 16 32.3
32 2 64 64 16 9.5

A new record may automatically overwrite an older record if TRIGGER MODE is set to “Automatic Overwrite”.
Set the TRIGGER POSITION to a percentage of the total buffer size (e.g. 10%, 50%, 75%, etc.). A trigger position of 25% con-
sists of 25% pre- and 75% post-trigger data. The TRIGGER SOURCE is always captured in oscillography and may be any
FlexLogic™ parameter (element state, contact input, virtual output, etc.). The relay sampling rate is 64 samples per cycle.
The AC INPUT WAVEFORMS setting determines the sampling rate at which AC input signals (i.e. current and voltage) are
stored. Reducing the sampling rate allows longer records to be stored. This setting has no effect on the internal sampling
rate of the relay which is always 64 samples per cycle, i.e. it has no effect on the fundamental calculations of the device.
When changes are made to the oscillography settings, all existing oscillography records will be CLEARED.

5 WARNING

b) DIGITAL CHANNELS
PATH: SETTINGS PRODUCT SETUP OSCILLOGRAPHY DIGITAL CHANNELS

DIGITAL CHANNELS DIGITAL CHANNEL 1: Range: FlexLogic™ operand

Off
↓

DIGITAL CHANNEL 63: Range: FlexLogic™ operand

MESSAGE
Off

A DIGITAL CHANNEL setting selects the FlexLogic™ operand state recorded in an oscillography trace. The length of each
oscillography trace depends in part on the number of parameters selected here. Parameters set to “Off” are ignored. Upon
startup, the relay will automatically prepare the parameter list.

c) ANALOG CHANNELS
PATH: SETTINGS PRODUCT SETUP OSCILLOGRAPHY ANALOG CHANNELS

ANALOG CHANNELS ANALOG CHANNEL 1: Range: Off, any FlexAnalog parameter

Off See Appendix A for complete list.

ANALOG CHANNEL 16: Range: Off, any FlexAnalog parameter

MESSAGE See Appendix A for complete list.
Off

An ANALOG CHANNEL setting selects the metering actual value recorded in an oscillography trace. The length of each oscil-
lography trace depends in part on the number of parameters selected here. Parameters set to “Off” are ignored. The
parameters available in a given relay are dependent on: (a) the type of relay, (b) the type and number of CT/VT hardware
modules installed, and (c) the type and number of Analog Input hardware modules installed. Upon startup, the relay will
automatically prepare the parameter list. A list of all possible analog metering actual value parameters is presented in
Appendix A: FlexAnalog Parameters. The parameter index number shown in any of the tables is used to expedite the
selection of the parameter on the relay display. It can be quite time-consuming to scan through the list of parameters via the
relay keypad/display - entering this number via the relay keypad will cause the corresponding parameter to be displayed.

5-24 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

All eight CT/VT module channels are stored in the oscillography file. The CT/VT module channels are named as follows:
<slot_letter><terminal_number>—<I or V><phase A, B, or C, or 4th input>
The fourth current input in a bank is called IG, and the fourth voltage input in a bank is called VX. For example, F2-IB desig-
nates the IB signal on Terminal 2 of the CT/VT module in slot F. If there are no CT/VT modules and Analog Input modules,
no analog traces will appear in the file; only the digital traces will appear.

5.2.9 USER-PROGRAMMABLE LEDS

a) MAIN MENU
PATH: SETTINGS PRODUCT SETUP USER-PROGRAMMABLE LEDS

USER-PROGRAMMABLE LED TEST

See below.
LEDS
TRIP & ALARM LEDS
MESSAGE See page 5–27.

USER-PROGRAMMABLE
MESSAGE See page 5–27.
LED 1
USER-PROGRAMMABLE
MESSAGE
LED 2
↓

USER-PROGRAMMABLE
MESSAGE
LED 48
5
b) LED TEST
PATH: SETTINGS PRODUCT SETUP USER-PROGRAMMABLE LEDS LED TEST

LED TEST LED TEST FUNCTION: Range: Disabled, Enabled.

Disabled
LED TEST CONTROL: Range: FlexLogic™ operand
MESSAGE
Off

When enabled, the LED Test can be initiated from any digital input or user-programmable condition such as user-program-
mable pushbutton. The control operand is configured under the LED TEST CONTROL setting. The test covers all LEDs,
including the LEDs of the optional user-programmable pushbuttons.
The test consists of three stages.
Stage 1: All 62 LEDs on the relay are illuminated. This is a quick test to verify if any of the LEDs is “burned”. This stage
lasts as long as the control input is on, up to a maximum of 1 minute. After 1 minute, the test will end.
Stage 2: All the LEDs are turned off, and then one LED at a time turns on for 1 second, then back off. The test routine
starts at the top left panel, moving from the top to bottom of each LED column. This test checks for hardware failures
that lead to more than one LED being turned on from a single logic point. This stage can be interrupted at any time.
Stage 3: All the LEDs are turned on. One LED at a time turns off for 1 second, then back on. The test routine starts at
the top left panel moving from top to bottom of each column of the LEDs. This test checks for hardware failures that
lead to more than one LED being turned off from a single logic point. This stage can be interrupted at any time.
When testing is in progress, the LEDs are controlled by the test sequence, rather than the protection, control, and monitor-
ing features. However, the LED control mechanism accepts all the changes to LED states generated by the relay and
stores the actual LED states (On or Off) in memory. When the test completes, the LEDs reflect the actual state resulting
from relay response during testing. The Reset pushbutton will not clear any targets when the LED Test is in progress.
A dedicated FlexLogic™ operand, LED TEST IN PROGRESS, is set for the duration of the test. When the test sequence is ini-
tiated, the LED Test Initiated event is stored in the Event Recorder.

GE Multilin B30 Bus Differential Relay 5-25

 5.2 PRODUCT SETUP 5 SETTINGS

The entire test procedure is user-controlled. In particular, Stage 1 can last as long as necessary, and Stages 2 and 3 can be
interrupted. The test responds to the position and rising edges of the control input defined by the LED TEST CONTROL set-
ting. The control pulses must last at least 250 ms to take effect. The following diagram explains how the test is executed.

READY TO TEST

Reset the
LED TEST IN PROGRESS
rising edge of the
operand
control input

Start the software image of Restore the LED states

the LEDs from the software image

Set the
LED TEST IN PROGRESS
operand

control input is on

STAGE 1 time-out
(all LEDs on) (1 minute)

dropping edge of the

control input

rising edge of the

Wait 1 second
control input

5 STAGE 2
(one LED on at a time)
rising edge of the
control input

rising edge of the

Wait 1 second
control input

rising edge
STAGE 3
of the control
(one LED off at a time) input

842011A1.CDR

Figure 5–2: LED TEST SEQUENCE

APPLICATION EXAMPLE 1:
Assume one needs to check if any of the LEDs is “burned” through User-Programmable Pushbutton 1. The following set-
tings should be applied. Configure User-Programmable Pushbutton 1 by making the following entries in the SETTINGS
PRODUCT SETUP USER-PROGRAMMABLE PUSHBUTTONS USER PUSHBUTTON 1 menu:

PUSHBUTTON 1 FUNCTION: “Self-reset”

PUSHBTN 1 DROP-OUT TIME: “0.10 s”

Configure the LED test to recognize User-Programmable Pushbutton 1 by making the following entries in the SETTINGS
PRODUCT SETUP USER-PROGRAMMABLE LEDS LED TEST menu:

LED TEST FUNCTION: “Enabled”

LED TEST CONTROL: “PUSHBUTTON 1 ON”

The test will be initiated when the User-Programmable Pushbutton 1 is pressed. The pushbutton should remain pressed for
as long as the LEDs are being visually inspected. When finished, the pushbutton should be released. The relay will then
automatically start Stage 2. At this point forward, test may be aborted by pressing the pushbutton.

APPLICATION EXAMPLE 2:
Assume one needs to check if any LEDs are “burned” as well as exercise one LED at a time to check for other failures. This
is to be performed via User-Programmable Pushbutton 1.

5-26 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

After applying the settings in Application Example 1, hold down the pushbutton as long as necessary to test all LEDs. Next,
release the pushbutton to automatically start Stage 2. Once Stage 2 has started, the pushbutton can be released. When
Stage 2 is completed, Stage 3 will automatically start. The test may be aborted at any time by pressing the pushbutton.

c) TRIP AND ALARM LEDS

PATH: SETTINGS PRODUCT SETUP USER-PROGRAMMABLE LEDS TRIP & ALARM LEDS

TRIP & ALARM LEDS TRIP LED INPUT: Range: FlexLogic™ operand
Off
ALARM LED INPUT: Range: FlexLogic™ operand
MESSAGE
Off

The Trip and Alarm LEDs are on LED Panel 1. Each indicator can be programmed to become illuminated when the
selected FlexLogic™ operand is in the Logic 1 state.

d) USER-PROGRAMMABLE LED 1(48)

PATH: SETTINGS PRODUCT SETUP USER-PROGRAMMABLE LEDS USER-PROGRAMMABLE LED 1(48)

USER-PROGRAMMABLE LED 1 OPERAND: Range: FlexLogic™ operand

LED 1 Off
LED 1 TYPE: Range: Self-Reset, Latched
MESSAGE
Self-Reset

There are 48 amber LEDs across the relay faceplate LED panels. Each of these indicators can be programmed to illumi-
nate when the selected FlexLogic™ operand is in the Logic 1 state.
• LEDs 1 through 24 inclusive are on LED Panel 2; LEDs 25 through 48 inclusive are on LED Panel 3.
5
Refer to the LED Indicators section in Chapter 4 for the locations of these indexed LEDs. This menu selects the operands
to control these LEDs. Support for applying user-customized labels to these LEDs is provided. If the LED X TYPE setting is
“Self-Reset” (default setting), the LED illumination will track the state of the selected LED operand. If the LED X TYPE setting
is ‘Latched’, the LED, once lit, remains so until reset by the faceplate RESET button, from a remote device via a communi-
cations channel, or from any programmed operand, even if the LED operand state de-asserts.

Table 5–2: RECOMMENDED SETTINGS FOR LED PANEL 2 LABELS

SETTING PARAMETER SETTING PARAMETER
LED 1 Operand SETTING GROUP ACT 1 LED 13 Operand Off
LED 2 Operand SETTING GROUP ACT 2 LED 14 Operand Off
LED 3 Operand SETTING GROUP ACT 3 LED 15 Operand Off
LED 4 Operand SETTING GROUP ACT 4 LED 16 Operand Off
LED 5 Operand SETTING GROUP ACT 5 LED 17 Operand Off
LED 6 Operand SETTING GROUP ACT 6 LED 18 Operand Off
LED 7 Operand Off LED 19 Operand Off
LED 8 Operand Off LED 20 Operand Off
LED 9 Operand Off LED 21 Operand Off
LED 10 Operand Off LED 22 Operand Off
LED 11 Operand Off LED 23 Operand Off
LED 12 Operand Off LED 24 Operand Off

Refer to the Control of Setting Groups example in the Control Elements section of this chapter for group activation.

GE Multilin B30 Bus Differential Relay 5-27

 5.2 PRODUCT SETUP 5 SETTINGS

5.2.10 USER-PROGRAMMABLE SELF TESTS

PATH: SETTINGS PRODUCT SETUP USER-PROGRAMMABLE SELF TESTS

USER-PROGRAMMABLE DIRECT RING BREAK Range: Disabled, Enabled. Valid for units equipped with
SELF TESTS FUNCTION: Enabled Direct Input/Output module.

DIRECT DEVICE OFF Range: Disabled, Enabled. Valid for units equipped with
MESSAGE Direct Input/Output module.
FUNCTION: Enabled
REMOTE DEVICE OFF Range: Disabled, Enabled. Valid for units that contain a
MESSAGE CPU with Ethernet capability.
FUNCTION: Enabled
PRI. ETHERNET FAIL Range: Disabled, Enabled. Valid for units that contain a
MESSAGE CPU with a primary fiber port.
FUNCTION: Disabled
SEC. ETHERNET FAIL Range: Disabled, Enabled. Valid for units that contain a
MESSAGE CPU with a redundant fiber port.
FUNCTION: Disabled
BATTERY FAIL Range: Disabled, Enabled.
MESSAGE
FUNCTION: Enabled
SNTP FAIL Range: Disabled, Enabled. Valid for units that contain a
MESSAGE CPU with Ethernet capability.
FUNCTION: Enabled
IRIG-B FAIL Range: Disabled, Enabled.
MESSAGE
FUNCTION: Enabled

5 All major self-test alarms are reported automatically with their corresponding FlexLogic™ operands, events, and targets.
Most of the Minor Alarms can be disabled if desired.
When in the “Disabled” mode, minor alarms will not assert a FlexLogic™ operand, write to the event recorder, display target
messages. Moreover, they will not trigger the ANY MINOR ALARM or ANY SELF-TEST messages. When in the “Enabled” mode,
minor alarms continue to function along with other major and minor alarms. Refer to the Relay Self-Tests section in Chapter
7 for additional information on major and minor self-test alarms.

5-28 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

5.2.11 CONTROL PUSHBUTTONS

PATH: SETTINGS PRODUCT SETUP CONTROL PUSHBUTTONS CONTROL PUSHBUTTON 1(7)

CONTROL CONTROL PUSHBUTTON 1 Range: Disabled, Enabled

PUSHBUTTON 1 FUNCTION: Disabled
CONTROL PUSHBUTTON 1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

The three standard pushbuttons located on the top left panel of the faceplate are user-programmable and can be used for
various applications such as performing an LED test, switching setting groups, and invoking and scrolling though user-pro-
grammable displays, etc. The location of the control pushbuttons in the following figure.
An additonal four control pushbuttons are included when the B30 is ordered with twelve user programmable pushbuttons.

STATUS EVENT CAUSE

IN SERVICE VOLTAGE
TROUBLE CURRENT RESET
TEST MODE FREQUENCY
TRIP OTHER USER 1 THREE
ALARM PHASE A STANDARD
PICKUP PHASE B USER 2
PHASE C
CONTROL
NEUTRAL/GROUND USER 3 PUSHBUTTONS

USER 4

USER 5 FOUR EXTRA

OPTIONAL
USER 6
CONTROL
PUSHBUTTONS

5
USER 7

842733A2.CDR

Figure 5–3: CONTROL PUSHBUTTONS

Control pushbuttons are not typically used for critical operations and are not protected by the control password. However,
by supervising their output operands, the user can dynamically enable or disable control pushbuttons for security reasons.
Each control pushbutton asserts its own FlexLogic™ operand, CONTROL PUSHBTN 1(7) ON. These operands should be
configured appropriately to perform the desired function. The operand remains asserted as long as the pushbutton is
pressed and resets when the pushbutton is released. A dropout delay of 100 ms is incorporated to ensure fast pushbutton
manipulation will be recognized by various features that may use control pushbuttons as inputs.
An event is logged in the Event Record (as per user setting) when a control pushbutton is pressed; no event is logged when
the pushbutton is released. The faceplate keys (including control keys) cannot be operated simultaneously – a given key
must be released before the next one can be pressed.

SETTING
CONTROL PUSHBUTTON

{
1 FUNCTION:
Enabled=1

SETTINGS
SYSTEM SETUP/
BREAKERS/BREAKER 1/
BREAKER 1 PUSHBUTTON
CONTROL:
When applicable

AND RUN
Enabled=1
OFF TIMER
SYSTEM SETUP/ FLEXLOGIC OPERAND
BREAKERS/BREAKER 2/ ON 0 CONTROL PUSHBTN 1 ON
BREAKER 2 PUSHBUTTON 100 msec
CONTROL:
842010A2.CDR
Enabled=1

Figure 5–4: CONTROL PUSHBUTTON LOGIC

GE Multilin B30 Bus Differential Relay 5-29

 5.2 PRODUCT SETUP 5 SETTINGS

5.2.12 USER-PROGRAMMABLE PUSHBUTTONS

PATH: SETTINGS PRODUCT SETUP USER-PROGRAMMABLE PUSHBUTTONS USER PUSHBUTTON 1(12)

USER PUSHBUTTON 1 PUSHBUTTON 1 Range: Self-Reset, Latched, Disabled

FUNCTION: Disabled
PUSHBTN 1 ID TEXT: Range: Up to 20 alphanumeric characters
MESSAGE

PUSHBTN 1 ON TEXT: Range: Up to 20 alphanumeric characters

MESSAGE

PUSHBTN 1 OFF TEXT: Range: Up to 20 alphanumeric characters

MESSAGE

PUSHBTN 1 DROP-OUT Range: 0 to 60.00 s in steps of 0.01

MESSAGE
TIME: 0.00 s
PUSHBUTTON 1 Range: Self-Reset, Latched, Disabled
MESSAGE
TARGETS: Disabled
PUSHBUTTON 1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

The B30 has 12 optional user-programmable pushbuttons available, each configured via 12 identical menus. The pushbut-
tons provide an easy and error-free method of manually entering digital information (On, Off) into FlexLogic™ equations as
well as protection and control elements. Typical applications include breaker control, autorecloser blocking, ground protec-
5 tion blocking, and setting groups changes.
The user-configurable pushbuttons are shown below. They can be custom labeled with a factory-provided template, avail-
able online at http://www.GEmultilin.com.

1 3 5 7 9 11
USER LABEL USER LABEL USER LABEL USER LABEL USER LABEL USER LABEL

2 4 6 8 10 12
USER LABEL USER LABEL USER LABEL USER LABEL USER LABEL USER LABEL

Figure 5–5: USER-PROGRAMMABLE PUSHBUTTONS

Each pushbutton asserts its own On and Off FlexLogic™ operands, respectively. FlexLogic™ operands should be used to
program desired pushbutton actions. The operand names are PUSHBUTTON 1 ON and PUSHBUTTON 1 OFF.
A pushbutton may be programmed to latch or self-reset. An indicating LED next to each pushbutton signals the present sta-
tus of the corresponding "On" FlexLogic™ operand. When set to "Latched", the state of each pushbutton is stored in non-
volatile memory which is maintained during any supply power loss.
Pushbuttons states can be logged by the Event Recorder and displayed as target messages. User-defined messages can
also be associated with each pushbutton and displayed when the pushbutton is ON.
• PUSHBUTTON 1 FUNCTION: This setting selects the characteristic of the pushbutton. If set to “Disabled”, the push-
button is deactivated and the corresponding FlexLogic™ operands (both “On” and “Off”) are de-asserted. If set to
“Self-reset”, the control logic of the pushbutton asserts the “On” corresponding FlexLogic™ operand as long as the
pushbutton is being pressed. As soon as the pushbutton is released, the FlexLogic™ operand is de-asserted. The
“Off” operand is asserted/de-asserted accordingly.
If set to “Latched”, the control logic alternates the state of the corresponding FlexLogic™ operand between “On” and
“Off” on each push of the button. When operating in “Latched” mode, FlexLogic™ operand states are stored in non-vol-
atile memory. Should power be lost, the correct pushbutton state is retained upon subsequent power up of the relay.

5-30 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

• PUSHBTN 1 ID TEXT: This setting specifies the top 20-character line of the user-programmable message and is
intended to provide ID information of the pushbutton. Refer to the User-Definable Displays section for instructions on
how to enter alphanumeric characters from the keypad.
• PUSHBTN 1 ON TEXT: This setting specifies the bottom 20-character line of the user-programmable message and is
displayed when the pushbutton is in the “on” position. Refer to the User-Definable Displays section for instructions on
entering alphanumeric characters from the keypad.
• PUSHBTN 1 OFF TEXT: This setting specifies the bottom 20-character line of the user-programmable message and is
displayed when the pushbutton is activated from the On to the Off position and the PUSHBUTTON 1 FUNCTION is
“Latched”. This message is not displayed when the PUSHBUTTON 1 FUNCTION is “Self-reset” as the pushbutton operand
status is implied to be “Off” upon its release. All user text messaging durations for the pushbuttons are configured with
the PRODUCT SETUP DISPLAY PROPERTIES FLASH MESSAGE TIME setting.

• PUSHBTN 1 DROP-OUT TIME: This setting specifies a drop-out time delay for a pushbutton in the self-reset mode. A
typical applications for this setting is providing a select-before-operate functionality. The selecting pushbutton should
have the drop-out time set to a desired value. The operating pushbutton should be logically ANDed with the selecting
pushbutton in FlexLogic™. The selecting pushbutton LED remains on for the duration of the drop-out time, signaling
the time window for the intended operation.
For example, consider a relay with the following settings: PUSHBTN 1 ID TEXT: “AUTORECLOSER”, PUSHBTN 1 ON TEXT:
“DISABLED - CALL 2199", and PUSHBTN 1 OFF TEXT: “ENABLED”. When Pushbutton 1 changes its state to the “On” posi-
tion, the following AUTOCLOSER DISABLED – Call 2199 message is displayed: When Pushbutton 1 changes its state to the
“Off” position, the message will change to AUTORECLOSER ENABLED.
User-programmable pushbuttons require a type HP relay faceplate. If an HP-type faceplate was ordered sepa-
rately, the relay order code must be changed to indicate the HP faceplate option. This can be done via EnerVista
NOTE
UR Setup with the Maintenance > Enable Pushbutton command.

5.2.13 FLEX STATE PARAMETERS 5

PATH: SETTINGS PRODUCT SETUP FLEX STATE PARAMETERS

FLEX STATE PARAMETER 1: Range: FlexLogic™ operand

PARAMETERS Off
PARAMETER 2: Range: FlexLogic™ operand
MESSAGE
Off
↓

PARAMETER 256: Range: FlexLogic™ operand

MESSAGE
Off

This feature provides a mechanism where any of 256 selected FlexLogic™ operand states can be used for efficient moni-
toring. The feature allows user-customized access to the FlexLogic™ operand states in the relay. The state bits are packed
so that 16 states may be read out in a single Modbus register. The state bits can be configured so that all of the states
which are of interest to the user are available in a minimum number of Modbus registers.
The state bits may be read out in the “Flex States” register array beginning at Modbus address 900 hex. 16 states are
packed into each register, with the lowest-numbered state in the lowest-order bit. There are 16 registers in total to accom-
modate the 256 state bits.

GE Multilin B30 Bus Differential Relay 5-31

 5.2 PRODUCT SETUP 5 SETTINGS

5.2.14 USER-DEFINABLE DISPLAYS

a) MAIN MENU
PATH: SETTINGS PRODUCT SETUP USER-DEFINABLE DISPLAYS

USER-DEFINABLE INVOKE AND SCROLL: Range: FlexLogic™ operand

DISPLAYS Off
USER DISPLAY 1 Range: up to 20 alphanumeric characters
MESSAGE

USER DISPLAY 16 Range: up to 20 alphanumeric characters

MESSAGE

This menu provides a mechanism for manually creating up to 16 user-defined information displays in a convenient viewing
sequence in the USER DISPLAYS menu (between the TARGETS and ACTUAL VALUES top-level menus). The sub-menus facili-
tate text entry and Modbus Register data pointer options for defining the User Display content.
Once programmed, the user-definable displays can be viewed in two ways.
• KEYPAD: Use the Menu key to select the USER DISPLAYS menu item to access the first user-definable display (note
that only the programmed screens are displayed). The screens can be scrolled using the Up and Down keys. The dis-
play disappears after the default message time-out period specified by the PRODUCT SETUP DISPLAY PROPERTIES
DEFAULT MESSAGE TIMEOUT setting.

• USER-PROGRAMMABLE CONTROL INPUT: The user-definable displays also respond to the INVOKE AND SCROLL
setting. Any FlexLogic™ operand (in particular, the user-programmable pushbutton operands), can be used to navi-
5 gate the programmed displays.
On the rising edge of the configured operand (such as when the pushbutton is pressed), the displays are invoked by
showing the last user-definable display shown during the previous activity. From this moment onward, the operand
acts exactly as the Down key and allows scrolling through the configured displays. The last display wraps up to the first
one. The INVOKE AND SCROLL input and the Down keypad key operate concurrently.
When the default timer expires (set by the DEFAULT MESSAGE TIMEOUT setting), the relay will start to cycle through the
user displays. The next activity of the INVOKE AND SCROLL input stops the cycling at the currently displayed user dis-
play, not at the first user-defined display. The INVOKE AND SCROLL pulses must last for at least 250 ms to take effect.

b) USER DISPLAY 1(16)

PATH: SETTINGS PRODUCT SETUP USER-DEFINABLE DISPLAYS USER DISPLAY 1(16)

USER DISPLAY 1 DISP 1 TOP LINE: Range: up to 20 alphanumeric characters

DISP 1 BOTTOM LINE: Range: up to 20 alphanumeric characters

MESSAGE

DISP 1 ITEM 1 Range: 0 to 65535 in steps of 1

MESSAGE
0
DISP 1 ITEM 2 Range: 0 to 65535 in steps of 1
MESSAGE
0
DISP 1 ITEM 3 Range: 0 to 65535 in steps of 1
MESSAGE
0
DISP 1 ITEM 4 Range: 0 to 65535 in steps of 1
MESSAGE
0
DISP 1 ITEM 5: Range: 0 to 65535 in steps of 1
MESSAGE
0

5-32 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

Any existing system display can be automatically copied into an available user display by selecting the existing display and
pressing the key. The display will then prompt ADD TO USER DISPLAY LIST?. After selecting “Yes”, a message indi-
cates that the selected display has been added to the user display list. When this type of entry occurs, the sub-menus are
automatically configured with the proper content – this content may subsequently be edited.
This menu is used to enter user-defined text and/or user-selected Modbus-registered data fields into the particular user
display. Each user display consists of two 20-character lines (top and bottom). The tilde (~) character is used to mark the
start of a data field - the length of the data field needs to be accounted for. Up to 5 separate data fields (ITEM 1(5)) can be
entered in a user display - the nth tilde (~) refers to the nth item.
A User Display may be entered from the faceplate keypad or the EnerVista UR Setup interface (preferred for convenience).
The following procedure shows how to enter text characters in the top and bottom lines from the faceplate keypad:
1. Select the line to be edited.
2. Press the key to enter text edit mode.
3. Use either Value key to scroll through the characters. A space is selected like a character.
4. Press the key to advance the cursor to the next position.
5. Repeat step 3 and continue entering characters until the desired text is displayed.
6. The key may be pressed at any time for context sensitive help information.
7. Press the key to store the new settings.
To enter a numerical value for any of the 5 items (the decimal form of the selected Modbus address) from the faceplate key-
pad, use the number keypad. Use the value of ‘0’ for any items not being used. Use the key at any selected system
display (setting, actual value, or command) which has a Modbus address, to view the hexadecimal form of the Modbus
address, then manually convert it to decimal form before entering it (EnerVista UR Setup usage conveniently facilitates this
conversion). 5
Use the key to go to the user displays menu to view the user-defined content. The current user displays will show in
sequence, changing every 4 seconds. While viewing a user display, press the key and then select the ‘Yes” option
to remove the display from the user display list. Use the key again to exit the user displays menu.
An example User Display setup and result is shown below:

USER DISPLAY 1 DISP 1 TOP LINE: Shows user-defined text with first Tilde marker.
Current X ~ A
DISP 1 BOTTOM LINE: Shows user-defined text with second Tilde marker.
MESSAGE
Current Y ~ A
DISP 1 ITEM 1: Shows decimal form of user-selected Modbus Register
MESSAGE Address, corresponding to first Tilde marker.
6016
DISP 1 ITEM 2: Shows decimal form of user-selected Modbus
MESSAGE Register Address, corresponding to 2nd Tilde marker.
6357
DISP 1 ITEM 3: This item is not being used - there is no corresponding
MESSAGE Tilde marker in Top or Bottom lines.
0
DISP 1 ITEM 4: This item is not being used - there is no corresponding
MESSAGE Tilde marker in Top or Bottom lines.
0
DISP 1 ITEM 5: This item is not being used - there is no corresponding
MESSAGE
0 Tilde marker in Top or Bottom lines.

USER DISPLAYS Current X 0.850 A Shows the resultant display content.

→
Current Y 0.327 A

GE Multilin B30 Bus Differential Relay 5-33

 5.2 PRODUCT SETUP 5 SETTINGS

5.2.15 DIRECT INPUTS/OUTPUTS

a) MAIN MENU
PATH: SETTINGS PRODUCT SETUP DIRECT I/O

DIRECT I/O DIRECT OUTPUT Range: 1 to 16

DEVICE ID: 1
DIRECT I/O CH1 RING Range: Yes, No
MESSAGE
CONFIGURATION: Yes
DIRECT I/O CH2 RING Range: Yes, No
MESSAGE
CONFIGURATION: Yes
DIRECT I/O DATA Range: 64 kbps, 128 kbps
MESSAGE
RATE: 64 kbps
DIRECT I/O CHANNEL Range: Disabled, Enabled
MESSAGE
CROSSOVER: Disabled
CRC ALARM CH1
MESSAGE See page 5–38.

CRC ALARM CH2

MESSAGE See page 5–38.

UNRETURNED
MESSAGE See page 5–39.
MESSAGES ALARM CH1

5 MESSAGE
UNRETURNED
MESSAGES ALARM CH2
See page 5–39.

Direct inputs/outputs are intended for exchange of status information (inputs and outputs) between UR-series relays con-
nected directly via Type-7 digital communications cards. The mechanism is very similar to IEC 61850 GSSE, except that
communications takes place over a non-switchable isolated network and is optimized for speed. On Type 7 cards that sup-
port two channels, direct output messages are sent from both channels simultaneously. This effectively sends direct output
messages both ways around a ring configuration. On Type 7 cards that support one channel, direct output messages are
sent only in one direction. Messages will be resent (forwarded) when it is determined that the message did not originate at
the receiver.
Direct output message timing is similar to GSSE message timing. Integrity messages (with no state changes) are sent at
least every 1000 ms. Messages with state changes are sent within the main pass scanning the inputs and asserting the
outputs unless the communication channel bandwidth has been exceeded. Two Self-Tests are performed and signaled by
the following FlexLogic™ operands:
1. DIRECT RING BREAK (direct input/output ring break). This FlexLogic™ operand indicates that direct output messages
sent from a UR-series relay are not being received back by the relay.
2. DIRECT DEVICE 1(16) OFF (direct device offline). This FlexLogic™ operand indicates that direct output messages from
at least one direct device are not being received.
Direct input/output settings are similar to remote input/output settings. The equivalent of the remote device name strings for
direct inputs/outputs is the DIRECT OUTPUT DEVICE ID. The DIRECT OUTPUT DEVICE ID identifies the relay in all direct output
messages. All UR-series IEDs in a ring should have unique numbers assigned. The IED ID is used to identify the sender of
the direct input/output message.
If the direct input/output scheme is configured to operate in a ring (DIRECT I/O RING CONFIGURATION: “Yes”), all direct output
messages should be received back. If not, the Direct Input/Output Ring Break self-test is triggered. The self-test error is sig-
naled by the DIRECT RING BREAK FlexLogic™ operand.
Select the DIRECT I/O DATA RATE to match the data capabilities of the communications channel. Back-to-back connections of
the local relays configured with the 7A, 7B, 7C, 7D, 7H, 7I, 7J, 7K, 72 and 73 fiber optic communication cards may be set to
128 kbps. For local relays configured with all other communication cards (i.e. 7E, 7F, 7G, 7L, 7M, 7N, 7P, 7R, 7S, 7T, 7W,
74, 75, 76 and 77), the baud rate will be set to 64 kbps. All IEDs communicating over direct inputs/outputs must be set to

5-34 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

the same data rate. UR-series IEDs equipped with dual-channel communications cards apply the same data rate to both
channels. Delivery time for direct input/output messages is approximately 0.2 of a power system cycle at 128 kbps and 0.4
of a power system cycle at 64 kbps, per each ‘bridge’.
The G.703 and RS422 modules are fixed at 64 kbps only. The SETTINGS PRODUCT SETUP DIRECT I/O
setting is not applicable to these modules.
DIRECT I/O DATA RATE
NOTE

The DIRECT I/O CHANNEL CROSSOVER setting applies to B30s with dual-channel communication cards and allows crossing
over messages from Channel 1 to Channel 2. This places all UR-series IEDs into one direct input/output network regard-
less of the physical media of the two communication channels.
The following application examples illustrate the basic concepts for direct input/output configuration. Please refer to the
Inputs/Outputs section in this chapter for information on configuring FlexLogic™ operands (flags, bits) to be exchanged.
EXAMPLE 1: EXTENDING THE INPUT/OUTPUT CAPABILITIES OF A UR-SERIES RELAY
Consider an application that requires additional quantities of digital inputs and/or output contacts and/or lines of program-
mable logic that exceed the capabilities of a single UR-series chassis. The problem is solved by adding an extra UR-series
IED, such as the C30, to satisfy the additional input/output and programmable logic requirements. The two IEDs are con-
nected via single-channel digital communication cards as shown in the figure below.

TX1
UR IED 1
RX1

TX1
UR IED 2
RX1
5
842711A1.CDR

Figure 5–6: INPUT/OUTPUT EXTENSION VIA DIRECT INPUTS/OUTPUTS

In the above application, the following settings should be applied:
UR IED 1: DIRECT OUTPUT DEVICE ID: "1"
DIRECT I/O RING CONFIGURATION: "Yes"
DIRECT I/O DATA RATE: "128 kbps"

UR IED 2: DIRECT OUTPUT DEVICE ID: "2"

DIRECT I/O RING CONFIGURATION: "Yes"
DIRECT I/O DATA RATE: "128 kbps"

The message delivery time is about 0.2 of power cycle in both ways (at 128 kbps); i.e., from Device 1 to Device 2, and from
Device 2 to Device 1. Different communications cards can be selected by the user for this back-to-back connection (fiber,
G.703, or RS422).
EXAMPLE 2: INTERLOCKING BUSBAR PROTECTION
A simple interlocking busbar protection scheme could be accomplished by sending a blocking signal from downstream
devices, say 2, 3, and 4, to the upstream device that monitors a single incomer of the busbar, as shown below.

UR IED 1 BLOCK

UR IED 2 UR IED 3 UR IED 4

842712A1.CDR

Figure 5–7: SAMPLE INTERLOCKING BUSBAR PROTECTION SCHEME

GE Multilin B30 Bus Differential Relay 5-35

 5.2 PRODUCT SETUP 5 SETTINGS

For increased reliability, a dual-ring configuration (shown below) is recommended for this application.

TX1 RX1
UR IED 1
RX2 TX2

RX1 TX2 RX2 TX1

UR IED 2 UR IED 4
TX1 RX2 TX2 RX1

TX2 RX2
UR IED 3
RX1 TX1
842716A1.CDR

Figure 5–8: INTERLOCKING BUS PROTECTION SCHEME VIA DIRECT INPUTS/OUTPUTS

In the above application, the following settings should be applied:
UR IED 1: DIRECT OUTPUT DEVICE ID: “1” UR IED 2: DIRECT OUTPUT DEVICE ID: “2”
DIRECT I/O RING CONFIGURATION: “Yes” DIRECT I/O RING CONFIGURATION: “Yes”
UR IED 3: DIRECT OUTPUT DEVICE ID: “3” UR IED 4: DIRECT OUTPUT DEVICE ID: “4”
DIRECT I/O RING CONFIGURATION: “Yes” DIRECT I/O RING CONFIGURATION: “Yes”
Message delivery time is approximately 0.2 of power system cycle (at 128 kbps) times number of ‘bridges’ between the ori-
gin and destination. Dual-ring configuration effectively reduces the maximum ‘communications distance’ by a factor of two.
In this configuration the following delivery times are expected (at 128 kbps) if both rings are healthy:
5 IED 1 to IED 2: 0.2 of power system cycle; IED 1 to IED 3: 0.4 of power system cycle;
IED 1 to IED 4: 0.2 of power system cycle; IED 2 to IED 3: 0.2 of power system cycle;
IED 2 to IED 4: 0.4 of power system cycle; IED 3 to IED 4: 0.2 of power system cycle
If one ring is broken (say TX2/RX2) the delivery times are as follows:
IED 1 to IED 2: 0.2 of power system cycle; IED 1 to IED 3: 0.4 of power system cycle;
IED 1 to IED 4: 0.6 of power system cycle; IED 2 to IED 3: 0.2 of power system cycle;
IED 2 to IED 4: 0.4 of power system cycle; IED 3 to IED 4: 0.2 of power system cycle
A coordinating timer for this bus protection scheme could be selected to cover the worst case scenario (0.4 of power sys-
tem cycle). Upon detecting a broken ring, the coordination time should be adaptively increased to 0.6 of power system
cycle. The complete application requires addressing a number of issues such as failure of both the communications rings,
failure or out-of-service conditions of one of the relays, etc. Self-monitoring flags of the direct inputs/outputs feature would
be primarily used to address these concerns.
EXAMPLE 3: PILOT-AIDED SCHEMES
Consider the three-terminal line protection application shown below:

UR IED 1 UR IED 2

UR IED 3
842713A1.CDR

Figure 5–9: THREE-TERMINAL LINE APPLICATION

A permissive pilot-aided scheme could be implemented in a two-ring configuration as shown below (IEDs 1 and 2 constitute
a first ring, while IEDs 2 and 3 constitute a second ring):

5-36 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

TX1 RX1 RX2

UR IED 1 UR IED 2
RX1 TX1 TX2

RX1
UR IED 3
TX1
842714A1.CDR

Figure 5–10: SINGLE-CHANNEL OPEN LOOP CONFIGURATION

In the above application, the following settings should be applied:
UR IED 1: DIRECT OUTPUT DEVICE ID: “1” UR IED 2: DIRECT OUTPUT DEVICE ID: “2”
DIRECT I/O RING CONFIGURATION: “Yes” DIRECT I/O RING CONFIGURATION: “Yes”
UR IED 3: DIRECT OUTPUT DEVICE ID: "3"
DIRECT I/O RING CONFIGURATION: "Yes"
In this configuration the following delivery times are expected (at 128 kbps):
IED 1 to IED 2: 0.2 of power system cycle; IED 1 to IED 3: 0.5 of power system cycle;
IED 2 to IED 3: 0.2 of power system cycle
In the above scheme, IEDs 1 and 3 do not communicate directly. IED 2 must be configured to forward the messages as
explained in the Inputs/Outputs section. A blocking pilot-aided scheme should be implemented with more security and, ide-
ally, faster message delivery time. This could be accomplished using a dual-ring configuration as shown below. 5
TX2 TX1 RX1 RX2
UR IED 1 UR IED 2
RX1 RX2 TX2 TX1

TX1 RX1
UR IED 3
RX2 TX2
842715A1.CDR

Figure 5–11: DUAL-CHANNEL CLOSED LOOP (DUAL-RING) CONFIGURATION

In the above application, the following settings should be applied:
UR IED 1: DIRECT OUTPUT DEVICE ID: “1” UR IED 2: DIRECT OUTPUT DEVICE ID: “2”
DIRECT I/O RING CONFIGURATION: “Yes” DIRECT I/O RING CONFIGURATION: “Yes”
UR IED 3: DIRECT OUTPUT DEVICE ID: "3"
DIRECT I/O RING CONFIGURATION: "Yes"
In this configuration the following delivery times are expected (at 128 kbps) if both the rings are healthy:
IED 1 to IED 2: 0.2 of power system cycle; IED 1 to IED 3: 0.2 of power system cycle;
IED 2 to IED 3: 0.2 of power system cycle
The two communications configurations could be applied to both permissive and blocking schemes. Speed, reliability and
cost should be taken into account when selecting the required architecture.

GE Multilin B30 Bus Differential Relay 5-37

 5.2 PRODUCT SETUP 5 SETTINGS

b) CRC ALARM CH1(2)

PATH: SETTINGS PRODUCT SETUP DIRECT I/O CRC ALARM CH1(2)

CRC ALARM CH1 CRC ALARM CH1 Range: Enabled, Disabled

FUNCTION: Disabled
CRC ALARM CH1 Range: 100 to 10000 in steps of 1
MESSAGE
MESSAGE COUNT: 600
CRC ALARM CH1 Range: 1 to 1000 in steps of 1
MESSAGE
THRESHOLD: 10
CRC ALARM CH1 Range: Enabled, Disabled
MESSAGE
EVENTS: Disabled

The B30 checks integrity of the incoming direct input/output messages using a 32-bit CRC. The CRC Alarm function is
available for monitoring the communication medium noise by tracking the rate of messages failing the CRC check. The
monitoring function counts all incoming messages, including messages that failed the CRC check. A separate counter adds
up messages that failed the CRC check. When the failed CRC counter reaches the user-defined level specified by the CRC
ALARM CH1 THRESHOLD setting within the user-defined message count CRC ALARM 1 CH1 COUNT, the DIR IO CH1 CRC ALARM
FlexLogic™ operand is set.
When the total message counter reaches the user-defined maximum specified by the CRC ALARM CH1 MESSAGE COUNT set-
ting, both the counters reset and the monitoring process is restarted.
The operand shall be configured to drive an output contact, user-programmable LED, or selected communication-based
output. Latching and acknowledging conditions - if required - should be programmed accordingly.

5 The CRC Alarm function is available on a per-channel basis. The total number of direct input/output messages that failed
the CRC check is available as the ACTUAL VALUES STATUS DIRECT INPUTS CRC FAIL COUNT CH1(2) actual value.

• Message Count and Length of the Monitoring Window: To monitor communications integrity, the relay sends 1
message per second (at 64 kbps) or 2 messages per second (128 kbps) even if there is no change in the direct out-
puts. For example, setting the CRC ALARM CH1 MESSAGE COUNT to “10000”, corresponds a time window of about 160
minutes at 64 kbps and 80 minutes at 128 kbps. If the messages are sent faster as a result of direct outputs activity, the
monitoring time interval will shorten. This should be taken into account when determining the CRC ALARM CH1 MESSAGE
COUNT setting. For example, if the requirement is a maximum monitoring time interval of 10 minutes at 64 kbps, then
the CRC ALARM CH1 MESSAGE COUNT should be set to 10 × 60 × 1 = 600.
• Correlation of Failed CRC and Bit Error Rate (BER): The CRC check may fail if one or more bits in a packet are cor-
rupted. Therefore, an exact correlation between the CRC fail rate and the BER is not possible. Under certain assump-
tions an approximation can be made as follows. A direct input/output packet containing 20 bytes results in 160 bits of
data being sent and therefore, a transmission of 63 packets is equivalent to 10,000 bits. A BER of 10–4 implies 1 bit
error for every 10,000 bits sent/received. Assuming the best case of only 1 bit error in a failed packet, having 1 failed
packet for every 63 received is about equal to a BER of 10–4.

5-38 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.2 PRODUCT SETUP

c) UNRETURNED MESSAGES ALARM CH1(2)

PATH: SETTINGS PRODUCT SETUP DIRECT I/O UNRETURNED MESSAGES ALARM CH1(2)

UNRETURNED UNRET MSGS ALARM CH1 Range: Enabled, Disabled

MESSAGES ALARM CH1 FUNCTION: Disabled
UNRET MSGS ALARM CH1 Range: 100 to 10000 in steps of 1
MESSAGE
MESSAGE COUNT: 600
UNRET MSGS ALARM CH1 Range: 1 to 1000 in steps of 1
MESSAGE
THRESHOLD: 10
UNRET MSGS ALARM CH1 Range: Enabled, Disabled
MESSAGE
EVENTS: Disabled

The B30 checks integrity of the direct input/output communication ring by counting unreturned messages. In the ring config-
uration, all messages originating at a given device should return within a pre-defined period of time. The Unreturned Mes-
sages Alarm function is available for monitoring the integrity of the communication ring by tracking the rate of unreturned
messages. This function counts all the outgoing messages and a separate counter adds the messages have failed to
return. When the unreturned messages counter reaches the user-definable level specified by the UNRET MSGS ALARM CH1
THRESHOLD setting and within the user-defined message count UNRET MSGS ALARM CH1 COUNT, the DIR IO CH1 UNRET ALM
FlexLogic™ operand is set.
When the total message counter reaches the user-defined maximum specified by the UNRET MSGS ALARM CH1 MESSAGE
COUNT setting, both the counters reset and the monitoring process is restarted.

The operand shall be configured to drive an output contact, user-programmable LED, or selected communication-based
output. Latching and acknowledging conditions, if required, should be programmed accordingly.
The Unreturned Messages Alarm function is available on a per-channel basis and is active only in the ring configuration. 5
The total number of unreturned input/output messages is available as the ACTUAL VALUES STATUS DIRECT INPUTS
UNRETURNED MSG COUNT CH1(2) actual value.

5.2.16 INSTALLATION

PATH: SETTINGS PRODUCT SETUP INSTALLATION

INSTALLATION RELAY SETTINGS: Range: Not Programmed, Programmed

Not Programmed
RELAY NAME: Range: up to 20 alphanumeric characters
MESSAGE
Relay-1

To safeguard against the installation of a relay without any entered settings, the unit will not allow signaling of any output
relay until RELAY SETTINGS is set to "Programmed". This setting is defaulted to "Not Programmed" when at the factory. The
UNIT NOT PROGRAMMED self-test error message is displayed until the relay is put into the "Programmed" state.
The RELAY NAME setting allows the user to uniquely identify a relay. This name will appear on generated reports. This name
is also used to identify specific devices which are engaged in automatically sending/receiving data over the Ethernet com-
munications channel using the IEC 61850 protocol.

GE Multilin B30 Bus Differential Relay 5-39

 5.3 SYSTEM SETUP 5 SETTINGS

5.3SYSTEM SETUP 5.3.1 AC INPUTS

a) CURRENT BANKS
PATH: SETTINGS SYSTEM SETUP AC INPUTS CURRENT BANK F1(S5)

CURRENT BANK F1 PHASE CT F1 Range: 1 to 65000 A in steps of 1

PRIMARY: 1 A
PHASE CT F1 Range: 1 A, 5 A
MESSAGE
SECONDARY: 1 A
GROUND CT F1 Range: 1 to 65000 A in steps of 1
MESSAGE
PRIMARY: 1 A
GROUND CT F1 Range: 1 A, 5 A
MESSAGE
SECONDARY: 1 A

Six banks of phase/ground CTs can be set, where the current banks are denoted in the following format (X represents the
module slot position letter):
Xa, where X = {F, L, S} and a = {1, 5}.
See the Introduction to AC Sources section at the beginning of this chapter for additional details.
These settings are critical for all features that have settings dependent on current measurements. When the relay is
ordered, the CT module must be specified to include a standard or sensitive ground input. As the phase CTs are connected
in Wye (star), the calculated phasor sum of the three phase currents (IA + IB + IC = Neutral Current = 3Io) is used as the
input for the neutral overcurrent elements. In addition, a zero-sequence (core balance) CT which senses current in all of the

5 circuit primary conductors, or a CT in a neutral grounding conductor may also be used. For this configuration, the ground
CT primary rating must be entered. To detect low level ground fault currents, the sensitive ground input may be used. In this
case, the sensitive ground CT primary rating must be entered. Refer to Chapter 3 for more details on CT connections.
Enter the rated CT primary current values. For both 1000:5 and 1000:1 CTs, the entry would be 1000. For correct opera-
tion, the CT secondary rating must match the setting (which must also correspond to the specific CT connections used).
The following example illustrates how multiple CT inputs (current banks) are summed as one source current. Given If the
following current banks:
F1: CT bank with 500:1 ratio; F5: CT bank with 1000: ratio; L1: CT bank with 800:1 ratio
The following rule applies:
SRC 1 = F1 + F5 + L1 (EQ 5.3)

1 pu is the highest primary current. In this case, 1000 is entered and the secondary current from the 500:1 ratio CT will be
adjusted to that created by a 1000:1 CT before summation. If a protection element is set up to act on SRC 1 currents, then
a pickup level of 1 pu will operate on 1000 A primary.
The same rule applies for current sums from CTs with different secondary taps (5 A and 1 A).

5-40 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.3 SYSTEM SETUP

b) VOLTAGE BANKS
PATH: SETTINGS SYSTEM SETUP AC INPUTS VOLTAGE BANK F5(S5)

VOLTAGE BANK F5 PHASE VT F5 Range: Wye, Delta

CONNECTION: Wye
PHASE VT F5 Range: 50.0 to 240.0 V in steps of 0.1
MESSAGE
SECONDARY: 66.4 V
PHASE VT F5 Range: 1.00 to 24000.00 in steps of 0.01
MESSAGE
RATIO: 1.00 :1
AUXILIARY VT F5 Range: Vn, Vag, Vbg, Vcg, Vab, Vbc, Vca
MESSAGE
CONNECTION: Vag
AUXILIARY VT F5 Range: 50.0 to 240.0 V in steps of 0.1
MESSAGE
SECONDARY: 66.4 V
AUXILIARY VT F5 Range: 1.00 to 24000.00 in steps of 0.01
MESSAGE
RATIO: 1.00 :1

Three banks of phase/auxiliary VTs can be set, where voltage banks are denoted in the following format (X represents the
module slot position letter):
Xa, where X = {F, L, S} and a = {5}.
See the Introduction to AC Sources section at the beginning of this chapter for additional details.
With VTs installed, the relay can perform voltage measurements as well as power calculations. Enter the PHASE VT F5 CON-
NECTION made to the system as “Wye” or “Delta”. An open-delta source VT connection would be entered as “Delta”. See
the Typical Wiring Diagram in Chapter 3 for details.
5
The nominal PHASE VT F5 SECONDARY voltage setting is the voltage across the relay input terminals when nominal
voltage is applied to the VT primary.
NOTE
For example, on a system with a 13.8 kV nominal primary voltage and with a 14400:120 volt VT in a Delta connec-
tion, the secondary voltage would be 115, i.e. (13800 / 14400) × 120. For a Wye connection, the voltage value
entered must be the phase to neutral voltage which would be 115 / 3 = 66.4.
On a 14.4 kV system with a Delta connection and a VT primary to secondary turns ratio of 14400:120, the voltage
value entered would be 120, i.e. 14400 / 120.

5.3.2 POWER SYSTEM

PATH: SETTINGS SYSTEM SETUP POWER SYSTEM

POWER SYSTEM NOMINAL FREQUENCY: Range: 25 to 60 Hz in steps of 1

60 Hz
PHASE ROTATION: Range: ABC, ACB
MESSAGE
ABC
FREQUENCY AND PHASE Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
REFERENCE: SRC 1
FREQUENCY TRACKING: Range: Disabled, Enabled
MESSAGE
Enabled

The power system NOMINAL FREQUENCY value is used as a default to set the digital sampling rate if the system frequency
cannot be measured from available signals. This may happen if the signals are not present or are heavily distorted. Before
reverting to the nominal frequency, the frequency tracking algorithm holds the last valid frequency measurement for a safe
period of time while waiting for the signals to reappear or for the distortions to decay.

GE Multilin B30 Bus Differential Relay 5-41

 5.3 SYSTEM SETUP 5 SETTINGS

The phase sequence of the power system is required to properly calculate sequence components and power parameters.
The PHASE ROTATION setting matches the power system phase sequence. Note that this setting informs the relay of the
actual system phase sequence, either ABC or ACB. CT and VT inputs on the relay, labeled as A, B, and C, must be con-
nected to system phases A, B, and C for correct operation.
The FREQUENCY AND PHASE REFERENCE setting determines which signal source is used (and hence which AC signal) for
phase angle reference. The AC signal used is prioritized based on the AC inputs that are configured for the signal source:
phase voltages takes precedence, followed by auxiliary voltage, then phase currents, and finally ground current.
For three phase selection, phase A is used for angle referencing ( V ANGLE REF = V A ), while Clarke transformation of the
phase signals is used for frequency metering and tracking ( V FREQUENCY = ( 2V A – V B – V C ) ⁄ 3 ) for better performance dur-
ing fault, open pole, and VT and CT fail conditions.
The phase reference and frequency tracking AC signals are selected based upon the Source configuration, regardless of
whether or not a particular signal is actually applied to the relay.
Phase angle of the reference signal will always display zero degrees and all other phase angles will be relative to this sig-
nal. If the pre-selected reference signal is not measurable at a given time, the phase angles are not referenced.
The phase angle referencing is done via a phase locked loop, which can synchronize independent UR-series relays if they
have the same AC signal reference. These results in very precise correlation of time tagging in the event recorder between
different UR-series relays provided the relays have an IRIG-B connection.
FREQUENCY TRACKING should only be set to "Disabled" in very unusual circumstances; consult the factory for spe-
cial variable-frequency applications.
NOTE

5.3.3 SIGNAL SOURCES

5 PATH: SETTINGS SYSTEM SETUP SIGNAL SOURCES SOURCE 1(6)

SOURCE 1 SOURCE 1 NAME: Range: up to 6 alphanumeric characters

SRC 1
SOURCE 1 PHASE CT: Range: None, F1, F5, F1+F5,... up to a combination of
MESSAGE any 6 CTs. Only Phase CT inputs are displayed.
None
SOURCE 1 GROUND CT: Range: None, F1, F5, F1+F5,... up to a combination of
MESSAGE any 6 CTs. Only Ground CT inputs are displayed.
None
SOURCE 1 PHASE VT: Range: None, F1, F5, L1, L5, S1, S5
MESSAGE Only phase voltage inputs will be displayed.
None
SOURCE 1 AUX VT: Range: None, F1, F5, L1, L5, S1, S5
MESSAGE Only auxiliary voltage inputs will be displayed.
None

Six identical source menus are available. The "SRC 1" text can be replaced by with a user-defined name appropriate for the
associated source.
“F”, “L”, and “S” represent the module slot position. The number directly following these letters represents either the first
bank of four channels (1, 2, 3, 4) called “1” or the second bank of four channels (5, 6, 7, 8) called “5” in a particular CT/VT
module. Refer to the Introduction to AC Sources section at the beginning of this chapter for additional details on this con-
cept.
It is possible to select the sum of up to six (6) CTs. The first channel displayed is the CT to which all others will be referred.
For example, the selection “F1+F5” indicates the sum of each phase from channels “F1” and “F5”, scaled to whichever CT
has the higher ratio. Selecting “None” hides the associated actual values.
The approach used to configure the AC sources consists of several steps; first step is to specify the information about each
CT and VT input. For CT inputs, this is the nominal primary and secondary current. For VTs, this is the connection type,
ratio and nominal secondary voltage. Once the inputs have been specified, the configuration for each source is entered,
including specifying which CTs will be summed together.

5-42 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.3 SYSTEM SETUP

User Selection of AC Parameters for Comparator Elements:

CT/VT modules automatically calculate all current and voltage parameters from the available inputs. Users must select the
specific input parameters to be measured by every element in the relevant settings menu. The internal design of the ele-
ment specifies which type of parameter to use and provides a setting for source selection. In elements where the parameter
may be either fundamental or RMS magnitude, such as phase time overcurrent, two settings are provided. One setting
specifies the source, the second setting selects between fundamental phasor and RMS.
AC Input Actual Values:
The calculated parameters associated with the configured voltage and current inputs are displayed in the current and volt-
age sections of actual values. Only the phasor quantities associated with the actual AC physical input channels will be dis-
played here. All parameters contained within a configured source are displayed in the sources section of the actual values.
EXAMPLE USE OF SOURCES:
An example of the use of sources, with a relay with three CT/VT modules, is shown in the diagram below. A relay could
have the following hardware configuration:
INCREASING SLOT POSITION LETTER -->
CT/VT MODULE 1 CT/VT MODULE 2 CT/VT MODULE 3
CTs CTs VTs

This configuration could be used on a two winding transformer, with one winding connected into a breaker-and-a-half sys-
tem. The following figure shows the arrangement of sources used to provide the functions required in this application, and
the CT/VT inputs that are used to provide the data.

F1 DSP Bank

5
F5
Source 1 Source 2
Amps Amps

Source 3
51BF-1 51BF-2
U1 Volts Amps

A W Var 87T

A W Var 51P

Volts Amps
M1

M1 Source 4

UR Relay
M5

Figure 5–12: EXAMPLE USE OF SOURCES

GE Multilin B30 Bus Differential Relay 5-43

 5.3 SYSTEM SETUP 5 SETTINGS

5.3.4 FLEXCURVES™

a) SETTINGS
PATH: SETTINGS SYSTEM SETUP FLEXCURVES FLEXCURVE A(D)

FLEXCURVE A FLEXCURVE A TIME AT Range: 0 to 65535 ms in steps of 1

0.00 xPKP: 0 ms

FlexCurves™ A through D have settings for entering times to Reset/Operate at the following pickup levels: 0.00 to 0.98 /
1.03 to 20.00. This data is converted into 2 continuous curves by linear interpolation between data points. To enter a cus-
tom FlexCurve™, enter the Reset/Operate time (using the VALUE keys) for each selected pickup point (using the
MESSAGE keys) for the desired protection curve (A, B, C, or D).

Table 5–3: FLEXCURVE™ TABLE

RESET TIME RESET TIME OPERATE TIME OPERATE TIME OPERATE TIME OPERATE TIME
MS MS MS MS MS MS

0.00 0.68 1.03 2.9 4.9 10.5

0.05 0.70 1.05 3.0 5.0 11.0

0.10 0.72 1.1 3.1 5.1 11.5

0.15 0.74 1.2 3.2 5.2 12.0

0.20 0.76 1.3 3.3 5.3 12.5

5 0.25 0.78 1.4 3.4 5.4 13.0

0.30 0.80 1.5 3.5 5.5 13.5

0.35 0.82 1.6 3.6 5.6 14.0

0.40 0.84 1.7 3.7 5.7 14.5

0.45 0.86 1.8 3.8 5.8 15.0

0.48 0.88 1.9 3.9 5.9 15.5

0.50 0.90 2.0 4.0 6.0 16.0

0.52 0.91 2.1 4.1 6.5 16.5

0.54 0.92 2.2 4.2 7.0 17.0

0.56 0.93 2.3 4.3 7.5 17.5

0.58 0.94 2.4 4.4 8.0 18.0

0.60 0.95 2.5 4.5 8.5 18.5

0.62 0.96 2.6 4.6 9.0 19.0

0.64 0.97 2.7 4.7 9.5 19.5

0.66 0.98 2.8 4.8 10.0 20.0

The relay using a given FlexCurve™ applies linear approximation for times between the user-entered
points. Special care must be applied when setting the two points that are close to the multiple of pickup of
NOTE
1, i.e. 0.98 pu and 1.03 pu. It is recommended to set the two times to a similar value; otherwise, the linear
approximation may result in undesired behavior for the operating quantity that is close to 1.00 pu.

5-44 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.3 SYSTEM SETUP

b) FLEXCURVE™ CONFIGURATION WITH ENERVISTA UR SETUP

The EnerVista UR Setup software allows for easy configuration and management of FlexCurves™ and their associated
data points. Prospective FlexCurves™ can be configured from a selection of standard curves to provide the best approxi-
mate fit, then specific data points can be edited afterwards. Alternately, curve data can be imported from a specified file
(.csv format) by selecting the Import Data From EnerVista UR Setup setting.
Curves and data can be exported, viewed, and cleared by clicking the appropriate buttons. FlexCurves™ are customized
by editing the operating time (ms) values at pre-defined per-unit current multiples. Note that the pickup multiples start at
zero (implying the "reset time"), operating time below pickup, and operating time above pickup.

c) RECLOSER CURVE EDITING

Recloser Curve selection is special in that recloser curves can be shaped into a composite curve with a minimum response
time and a fixed time above a specified pickup multiples. There are 41 recloser curve types supported. These definite oper-
ating times are useful to coordinate operating times, typically at higher currents and where upstream and downstream pro-
tective devices have different operating characteristics. The Recloser Curve configuration window shown below appears
when the Initialize From EnerVista UR Setup setting is set to “Recloser Curve” and the Initialize FlexCurve button is clicked.

Multiplier: Scales (multiplies) the curve operating times

Addr: Adds the time specified in this field (in ms) to each
curve operating time value.

Minimum Response Time (MRT): If enabled, the MRT setting

defines the shortest operating time even if the curve suggests
a shorter time at higher current multiples. A composite operating
characteristic is effectively defined. For current multiples lower
than the intersection point, the curve dictates the operating time;
5
otherwise, the MRT does. An information message appears
when attempting to apply an MRT shorter than the minimum
curve time.

High Current Time: Allows the user to set a pickup multiple

from which point onwards the operating time is fixed. This is
normally only required at higher current levels. The HCT Ratio
defines the high current pickup multiple; the HCT defines the
operating time.
842721A1.CDR

Figure 5–13: RECLOSER CURVE INITIALIZATION

Multiplier and Adder settings only affect the curve portion of the characteristic and not the MRT and HCT settings.
The HCT settings override the MRT settings for multiples of pickup greater than the HCT Ratio.
NOTE

GE Multilin B30 Bus Differential Relay 5-45

 5.3 SYSTEM SETUP 5 SETTINGS

d) EXAMPLE
A composite curve can be created from the GE_111 standard with MRT = 200 ms and HCT initially disabled and then
enabled at 8 times pickup with an operating time of 30 ms. At approximately 4 times pickup, the curve operating time is
equal to the MRT and from then onwards the operating time remains at 200 ms (see below).

842719A1.CDR

Figure 5–14: COMPOSITE RECLOSER CURVE WITH HCT DISABLED

With the HCT feature enabled, the operating time reduces to 30 ms for pickup multiples exceeding 8 times pickup.

842720A1.CDR

Figure 5–15: COMPOSITE RECLOSER CURVE WITH HCT ENABLED

Configuring a composite curve with an increase in operating time at increased pickup multiples is not allowed. If this
is attempted, the EnerVista UR Setup software generates an error message and discards the proposed changes.
NOTE

e) STANDARD RECLOSER CURVES

The standard Recloser curves available for the B30 are displayed in the following graphs.

5-46 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.3 SYSTEM SETUP

1 GE106

0.5

0.2
TIME (sec)

GE103

GE104 GE105
0.1

0.05
GE101 GE102

0.02

0.01
1 1.2 1.5 2 2.5 3 4 5 6 7 8 9 10 12 15 20
CURRENT (multiple of pickup) 842723A1.CDR
5
Figure 5–16: RECLOSER CURVES GE101 TO GE106

50

20 GE142

10

5
GE138
TIME (sec)

1 GE120
GE113
0.5

0.2

0.1

0.05
1 1.2 1.5 2 2.5 3 4 5 6 7 8 9 10 12 15 20
CURRENT (multiple of pickup) 842725A1.CDR

Figure 5–17: RECLOSER CURVES GE113, GE120, GE138 AND GE142

GE Multilin B30 Bus Differential Relay 5-47

 5.3 SYSTEM SETUP 5 SETTINGS

50

20

10
GE201
TIME (sec)

GE151
2

GE134 GE140
1
GE137

0.5

1 1.2 1.5 2 2.5 3 4 5 6 7 8 9 10 12 15 20

5
CURRENT (multiple of pickup) 842730A1.CDR

Figure 5–18: RECLOSER CURVES GE134, GE137, GE140, GE151 AND GE201

50

GE152

20
TIME (sec)

GE141
10

GE131
5

GE200

2
1 1.2 1.5 2 2.5 3 4 5 6 7 8 9 10 12 15 20
CURRENT (multiple of pickup) 842728A1.CDR

Figure 5–19: RECLOSER CURVES GE131, GE141, GE152, AND GE200

5-48 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.3 SYSTEM SETUP

50

20
GE164
10

2
TIME (sec)

GE162
1

0.5
GE133
0.2
GE165
0.1

0.05
GE161
0.02 GE163

0.01
1 1.2 1.5 2 2.5 3 4 5 6 7 8 9 10 12 15 20
CURRENT (multiple of pickup) 842729A1.CDR

Figure 5–20: RECLOSER CURVES GE133, GE161, GE162, GE163, GE164 AND GE165 5
20
GE132
10

1
TIME (sec)

0.5 GE139

0.2
GE136
0.1
GE116
0.05
GE118 GE117

0.02

0.01
1 1.2 1.5 2 2.5 3 4 5 6 7 8 9 10 12 15 20
CURRENT (multiple of pickup) 842726A1.CDR

Figure 5–21: RECLOSER CURVES GE116, GE117, GE118, GE132, GE136, AND GE139

GE Multilin B30 Bus Differential Relay 5-49

 5.3 SYSTEM SETUP 5 SETTINGS

20

10

5
GE122
2

1
TIME (sec)

0.5
GE114
0.2
GE111
GE121
0.1

0.05 GE115 GE112

GE107

0.02

0.01
1 1.2 1.5 2 2.5 3 4 5 6 7 8 9 10 12 15 20
CURRENT (multiple of pickup)
5
842724A1.CDR

Figure 5–22: RECLOSER CURVES GE107, GE111, GE112, GE114, GE115, GE121, AND GE122

50

20
GE202
10
TIME (sec)

GE135
2 GE119

0.5

0.2
1 1.2 1.5 2 2.5 3 4 5 6 7 8 9 10 12 15 20
CURRENT (multiple of pickup) 842727A1.CDR

Figure 5–23: RECLOSER CURVES GE119, GE135, AND GE202

5-50 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.3 SYSTEM SETUP

5.3.5 BUS

PATH: SETTINGS SYSTEM SETUP BUS BUS ZONE 1

BUS ZONE 1 BUS ZONE 1A SOURCE: Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
SRC 1
BUS ZONE 1B SOURCE: Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SRC 1
BUS ZONE 1C SOURCE: Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SRC 1
BUS ZONE 1D SOURCE: Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SRC 1
BUS ZONE 1E SOURCE: Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SRC 1
BUS ZONE 1F SOURCE: Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SRC 1
BUS ZONE 1A STATUS: Range: FlexLogic™ operand
MESSAGE
Off
BUS ZONE 1B STATUS: Range: FlexLogic™ operand
MESSAGE
Off
BUS ZONE 1C STATUS: Range: FlexLogic™ operand
MESSAGE
Off 5
BUS ZONE 1D STATUS: Range: FlexLogic™ operand
MESSAGE
Off
BUS ZONE 1E STATUS: Range: FlexLogic™ operand
MESSAGE
Off
BUS ZONE 1F STATUS: Range: FlexLogic™ operand
MESSAGE
Off

One bus differential zone can be configured. The zone is associated with its own bus differential protection element and CT
trouble monitoring element.
The bus differential zone is defined by providing the names of Sources whose currents bound the differential zone (refer to
settings BUS ZONE 1A SOURCE to BUS ZONE 1F SOURCE).
The connection status of a circuit with respect to the protected bus is dynamically provided by FlexLogic™ operands (BUS
ZONE 1A STATUS to BUS ZONE 1F STATUS settings). A given operand should be "On" if the corresponding circuit is connected
to the bus. The operands are to be formed from the contact inputs that reflect positions of switches and/or breakers. If con-
tact discrepancy filtering is needed, it should be accomplished using FlexLogic™ when forming the final status operands.
The status signal is meant to exclude a given current from the bus zone if the circuit is connected to a different bus section
and its non-zero values would upset the current balance causing a spurious differential signal. Therefore, it is not required
nor recommended to use the position of the breaker to control the status signal of a given circuit. If the breaker is opened,
the circuit may remain included in the bus differential zone as the zero current values are measured and used when calcu-
lating the differential signal. Excluding/including dynamically a given current during the operation of a breaker can cause
undesirable transients and race conditions for the relay algorithm.
If a given circuit cannot be connected to any other bus section different than the protected one, the FlexLogic™ constant
"On" is recommended for the status signal.

GE Multilin B30 Bus Differential Relay 5-51

 5.4 FLEXLOGIC™ 5 SETTINGS

5.4FLEXLOGIC™ 5.4.1 INTRODUCTION TO FLEXLOGIC™

To provide maximum flexibility to the user, the arrangement of internal digital logic combines fixed and user-programmed
parameters. Logic upon which individual features are designed is fixed, and all other logic, from digital input signals through
elements or combinations of elements to digital outputs, is variable. The user has complete control of all variable logic
through FlexLogic™. In general, the system receives analog and digital inputs which it uses to produce analog and digital
outputs. The major sub-systems of a generic UR-series relay involved in this process are shown below.

Figure 5–24: UR ARCHITECTURE OVERVIEW

The states of all digital signals used in the B30 are represented by flags (or FlexLogic™ operands, which are described
later in this section). A digital “1” is represented by a 'set' flag. Any external contact change-of-state can be used to block an
element from operating, as an input to a control feature in a FlexLogic™ equation, or to operate a contact output. The state
of the contact input can be displayed locally or viewed remotely via the communications facilities provided. If a simple
scheme where a contact input is used to block an element is desired, this selection is made when programming the ele-
ment. This capability also applies to the other features that set flags: elements, virtual inputs, remote inputs, schemes, and
human operators.
If more complex logic than presented above is required, it is implemented via FlexLogic™. For example, if it is desired to
have the closed state of contact input H7a and the operated state of the phase undervoltage element block the operation of
the phase time overcurrent element, the two control input states are programmed in a FlexLogic™ equation. This equation
ANDs the two control inputs to produce a ‘virtual output’ which is then selected when programming the phase time overcur-
rent to be used as a blocking input. Virtual outputs can only be created by FlexLogic™ equations.
Traditionally, protective relay logic has been relatively limited. Any unusual applications involving interlocks, blocking, or
supervisory functions had to be hard-wired using contact inputs and outputs. FlexLogic™ minimizes the requirement for
auxiliary components and wiring while making more complex schemes possible.

5-52 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.4 FLEXLOGIC™

The logic that determines the interaction of inputs, elements, schemes and outputs is field programmable through the use
of logic equations that are sequentially processed. The use of virtual inputs and outputs in addition to hardware is available
internally and on the communication ports for other relays to use (distributed FlexLogic™).
FlexLogic™ allows users to customize the relay through a series of equations that consist of operators and operands. The
operands are the states of inputs, elements, schemes and outputs. The operators are logic gates, timers and latches (with
set and reset inputs). A system of sequential operations allows any combination of specified operands to be assigned as
inputs to specified operators to create an output. The final output of an equation is a numbered register called a virtual out-
put. Virtual outputs can be used as an input operand in any equation, including the equation that generates the output, as a
seal-in or other type of feedback.
A FlexLogic™ equation consists of parameters that are either operands or operators. Operands have a logic state of 1 or 0.
Operators provide a defined function, such as an AND gate or a Timer. Each equation defines the combinations of parame-
ters to be used to set a Virtual Output flag. Evaluation of an equation results in either a 1 (=ON, i.e. flag set) or 0 (=OFF, i.e.
flag not set). Each equation is evaluated at least 4 times every power system cycle.
Some types of operands are present in the relay in multiple instances; e.g. contact and remote inputs. These types of oper-
ands are grouped together (for presentation purposes only) on the faceplate display. The characteristics of the different
types of operands are listed in the table below.

Table 5–4: B30 FLEXLOGIC™ OPERAND TYPES

OPERAND TYPE STATE EXAMPLE FORMAT CHARACTERISTICS
[INPUT IS ‘1’ (= ON) IF...]
Contact Input On Cont Ip On Voltage is presently applied to the input (external contact
closed).
Off Cont Ip Off Voltage is presently not applied to the input (external
contact open).
Contact Output
(type Form-A contact
Voltage On Cont Op 1 VOn Voltage exists across the contact. 5
only) Voltage Off Cont Op 1 VOff Voltage does not exists across the contact.
Current On Cont Op 1 IOn Current is flowing through the contact.
Current Off Cont Op 1 IOff Current is not flowing through the contact.
Direct Input On DIRECT INPUT 1 On The direct input is presently in the ON state.
Element Pickup PHASE TOC1 PKP The tested parameter is presently above the pickup setting
(Analog) of an element which responds to rising values or below the
pickup setting of an element which responds to falling
values.
Dropout PHASE TOC1 DPO This operand is the logical inverse of the above PKP
operand.
Operate PHASE TOC1 OP The tested parameter has been above/below the pickup
setting of the element for the programmed delay time, or
has been at logic 1 and is now at logic 0 but the reset timer
has not finished timing.
Block PH DIR1 BLK The output of the comparator is set to the block function.
Element Pickup Dig Element 1 PKP The input operand is at logic 1.
(Digital)
Dropout Dig Element 1 DPO This operand is the logical inverse of the above PKP
operand.
Operate Dig Element 1 OP The input operand has been at logic 1 for the programmed
pickup delay time, or has been at logic 1 for this period and
is now at logic 0 but the reset timer has not finished timing.
Element Higher than Counter 1 HI The number of pulses counted is above the set number.
(Digital Counter)
Equal to Counter 1 EQL The number of pulses counted is equal to the set number.
Lower than Counter 1 LO The number of pulses counted is below the set number.
Fixed On On Logic 1
Off Off Logic 0
Remote Input On REMOTE INPUT 1 On The remote input is presently in the ON state.
Virtual Input On Virt Ip 1 On The virtual input is presently in the ON state.
Virtual Output On Virt Op 1 On The virtual output is presently in the set state (i.e.
evaluation of the equation which produces this virtual
output results in a "1").

GE Multilin B30 Bus Differential Relay 5-53

 5.4 FLEXLOGIC™ 5 SETTINGS

The operands available for this relay are listed alphabetically by types in the following table.
Table 5–5: B30 FLEXLOGIC™ OPERANDS (Sheet 1 of 4)
OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION
CONTROL CONTROL PUSHBTN n ON Control Pushbutton n (n = 1 to 7) is being pressed.
PUSHBUTTONS
DIRECT DEVICES DIRECT DEVICE 1On Flag is set, logic=1
↓ ↓
DIRECT DEVICE 16On Flag is set, logic=1
DIRECT DEVICE 1Off Flag is set, logic=1
↓ ↓
DIRECT DEVICE 16Off Flag is set, logic=1
DIRECT INPUT/ DIR IO CH1(2) CRC ALARM The rate of Direct Input messages received on Channel 1(2) and failing the
OUTPUT CRC exceeded the user-specified level.
CHANNEL DIR IO CRC ALARM The rate of Direct Input messages failing the CRC exceeded the user-
MONITORING specified level on Channel 1 or 2.
DIR IO CH1(2) UNRET ALM The rate of returned direct input/output messages on Channel 1(2) exceeded
the user-specified level (ring configurations only).
DIR IO UNRET ALM The rate of returned direct input/output messages exceeded the user-
specified level on Channel 1 or 2 (ring configurations only).
ELEMENT: AUX OV1 PKP Auxiliary Overvoltage element has picked up
Auxiliary AUX OV1 DPO Auxiliary Overvoltage element has dropped out
Overvoltage AUX OV1 OP Auxiliary Overvoltage element has operated
ELEMENT: BUS 1 OP At least one phase of the bus differential characteristic has operated
Bus Differential BUS 1 DPO At least one phase of the bus differential characteristic has dropped out
BUS 1 BIASED OP A Phase A biased differential function has operated
BUS 1 BIASED OP B Phase B biased differential function has operated
BUS 1 BIASED OP C Phase C biased differential function has operated
BUS 1 BIASED PKP A Phase A biased differential function has picked up
BUS 1 BIASED PKP B Phase B biased differential function has picked up
BUS 1 BIASED PKP C Phase C biased differential function has picked up
5 BUS 1 UNBIASED OP A
BUS 1 UNBIASED OP B
BUS 1 UNBIASED OP C
Phase A unbiased differential function has operated
Phase B unbiased differential function has operated
Phase C unbiased differential function has operated
BUS 1 BIASED DPO A Phase A biased differential function has dropped out
BUS 1 BIASED DPO B Phase B biased differential function has dropped out
BUS 1 BIASED DPO C Phase C biased differential function has dropped out
BUS 1 UNBIASED DPO A Phase A unbiased differential function has dropped out
BUS 1 UNBIASED DPO B Phase B unbiased differential function has dropped out
BUS 1 UNBIASED DPO C Phase C unbiased differential function has dropped out
BUS 1 DIR A Phase A directional principle has picked up
BUS 1 DIR B Phase B directional principle has picked up
BUS 1 DIR C Phase C directional principle has picked up
BUS 1 SAT A CT saturation is detected in phase A
BUS 1 SAT B CT saturation is detected in phase B
BUS 1 SAT C CT saturation is detected in phase C
ELEMENT: CT TROUBLE1 OP At least one phase of CT Trouble Zone 1 is operated
CT Trouble CT TROUBLE1 OP A Phase A of CT Trouble Zone 1 has operated
CT TROUBLE1 OP B Phase B of CT Trouble Zone 1 has operated
CT TROUBLE1 OP C Phase C of CT Trouble Zone 1 has operated
ELEMENT: Counter 1 HI Digital Counter 1 output is ‘more than’ comparison value
Digital Counters Counter 1 EQL Digital Counter 1 output is ‘equal to’ comparison value
Counter 1 LO Digital Counter 1 output is ‘less than’ comparison value
↓ ↓
Counter 8 HI Digital Counter 8 output is ‘more than’ comparison value
Counter 8 EQL Digital Counter 8 output is ‘equal to’ comparison value
Counter 8 LO Digital Counter 8 output is ‘less than’ comparison value
ELEMENT: Dig Element 1 PKP Digital Element 1 is picked up
Digital Elements Dig Element 1 OP Digital Element 1 is operated
Dig Element 1 DPO Digital Element 1 is dropped out
↓ ↓
Dig Element 48 PKP Digital Element 48 is picked up
Dig Element 48 OP Digital Element 48 is operated
Dig Element 48 DPO Digital Element 48 is dropped out
ELEMENT: FxE 1 PKP FlexElement™ 1 has picked up
FlexElements™ FxE 1 OP FlexElement™ 1 has operated
FxE 1 DPO FlexElement™ 1 has dropped out
↓ ↓
FxE 8 PKP FlexElement™ 8 has picked up
FxE 8 OP FlexElement™ 8 has operated
FxE 8 DPO FlexElement™ 8 has dropped out

5-54 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.4 FLEXLOGIC™

Table 5–5: B30 FLEXLOGIC™ OPERANDS (Sheet 2 of 4)

OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION
ELEMENT LATCH 1 ON Non-Volatile Latch 1 is ON (Logic = 1)
Non-Volatile LATCH 1 OFF Non-Voltage Latch 1 is OFF (Logic = 0)
Latches ↓ ↓
LATCH 16 ON Non-Volatile Latch 16 is ON (Logic = 1)
LATCH 16 OFF Non-Voltage Latch 16 is OFF (Logic = 0)
ELEMENT: NEUTRAL OV1 PKP Neutral Overvoltage element has picked up
Neutral Overvoltage NEUTRAL OV1 DPO Neutral Overvoltage element has dropped out
NEUTRAL OV1 OP Neutral Overvoltage element has operated
ELEMENT: NEUTRAL TOC1 PKP Neutral Time Overcurrent 1 has picked up
Neutral Time NEUTRAL TOC1 OP Neutral Time Overcurrent 1 has operated
Overcurrent NEUTRAL TOC1 DPO Neutral Time Overcurrent 1 has dropped out
NEUTRAL TOC2 to TOC6 Same set of operands as shown for NEUTRAL TOC1
ELEMENT: PHASE IOC1 PKP At least one phase of PHASE IOC1 has picked up
Phase PHASE IOC1 OP At least one phase of PHASE IOC1 has operated
Instantaneous PHASE IOC1 DPO At least one phase of PHASE IOC1 has dropped out
Overcurrent PHASE IOC1 PKP A Phase A of PHASE IOC1 has picked up
PHASE IOC1 PKP B Phase B of PHASE IOC1 has picked up
PHASE IOC1 PKP C Phase C of PHASE IOC1 has picked up
PHASE IOC1 OP A Phase A of PHASE IOC1 has operated
PHASE IOC1 OP B Phase B of PHASE IOC1 has operated
PHASE IOC1 OP C Phase C of PHASE IOC1 has operated
PHASE IOC1 DPO A Phase A of PHASE IOC1 has dropped out
PHASE IOC1 DPO B Phase B of PHASE IOC1 has dropped out
PHASE IOC1 DPO C Phase C of PHASE IOC1 has dropped out
PHASE IOC2 Same set of operands as shown for PHASE IOC1
ELEMENT: PHASE TOC1 PKP At least one phase of PHASE TOC1 has picked up
Phase Time PHASE TOC1 OP At least one phase of PHASE TOC1 has operated
Overcurrent PHASE TOC1 DPO At least one phase of PHASE TOC1 has dropped out
PHASE TOC1 PKP A
PHASE TOC1 PKP B
Phase A of PHASE TOC1 has picked up
Phase B of PHASE TOC1 has picked up
5
PHASE TOC1 PKP C Phase C of PHASE TOC1 has picked up
PHASE TOC1 OP A Phase A of PHASE TOC1 has operated
PHASE TOC1 OP B Phase B of PHASE TOC1 has operated
PHASE TOC1 OP C Phase C of PHASE TOC1 has operated
PHASE TOC1 DPO A Phase A of PHASE TOC1 has dropped out
PHASE TOC1 DPO B Phase B of PHASE TOC1 has dropped out
PHASE TOC1 DPO C Phase C of PHASE TOC1 has dropped out
PHASE TOC2 to TOC6 Same set of operands as shown for PHASE TOC1
ELEMENT: PHASE UV1 PKP At least one phase of UV1 has picked up
Phase Undervoltage PHASE UV1 OP At least one phase of UV1 has operated
PHASE UV1 DPO At least one phase of UV1 has dropped out
PHASE UV1 PKP A Phase A of UV1 has picked up
PHASE UV1 PKP B Phase B of UV1 has picked up
PHASE UV1 PKP C Phase C of UV1 has picked up
PHASE UV1 OP A Phase A of UV1 has operated
PHASE UV1 OP B Phase B of UV1 has operated
PHASE UV1 OP C Phase C of UV1 has operated
PHASE UV1 DPO A Phase A of UV1 has dropped out
PHASE UV1 DPO B Phase B of UV1 has dropped out
PHASE UV1 DPO C Phase C of UV1 has dropped out
PHASE UV2 Same set of operands as shown for PHASE UV1
ELEMENT: SELECTOR 1 POS Y Selector Switch 1 is in Position Y (mutually exclusive operands).
Selector Switch SELECTOR 1 BIT 0 First bit of the 3-bit word encoding position of Selector 1.
SELECTOR 1 BIT 1 Second bit of the 3-bit word encoding position of Selector 1.
SELECTOR 1 BIT 2 Third bit of the 3-bit word encoding position of Selector 1.
SELECTOR 1 STP ALARM Position of Selector 1 has been pre-selected with the stepping up control
input but not acknowledged.
SELECTOR 1 BIT ALARM Position of Selector 1 has been pre-selected with the 3-bit control input but
not acknowledged.
SELECTOR 1 ALARM Position of Selector 1 has been pre-selected but not acknowledged.
SELECTOR 1 PWR ALARM Position of Selector Switch 1 is undetermined or restored from memory when
the relay powers up and synchronizes to the 3-bit input.
SELECTOR 2 Same set of operands as shown above for SELECTOR 1
ELEMENT: SETTING GROUP ACT 1 Setting Group 1 is active
Setting Group ↓ ↓
SETTING GROUP ACT 6 Setting Group 6 is active

GE Multilin B30 Bus Differential Relay 5-55

 5.4 FLEXLOGIC™ 5 SETTINGS

Table 5–5: B30 FLEXLOGIC™ OPERANDS (Sheet 3 of 4)

OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION
FIXED OPERANDS Off Logic = 0. Does nothing and may be used as a delimiter in an equation list;
used as ‘Disable’ by other features.
On Logic = 1. Can be used as a test setting.
INPUTS/OUTPUTS: Cont Ip 1 On (will not appear unless ordered)
Contact Inputs Cont Ip 2 On (will not appear unless ordered)
↓ ↓
Cont Ip 1 Off (will not appear unless ordered)
Cont Ip 2 Off (will not appear unless ordered)
↓ ↓
INPUTS/OUTPUTS: Cont Op 1 IOn (will not appear unless ordered)
Contact Outputs, Cont Op 2 IOn (will not appear unless ordered)
Current ↓ ↓
(from detector on
Form-A output only) Cont Op 1 IOff (will not appear unless ordered)
Cont Op 2 IOff (will not appear unless ordered)
↓ ↓
INPUTS/OUTPUTS: Cont Op 1 VOn (will not appear unless ordered)
Contact Outputs, Cont Op 2 VOn (will not appear unless ordered)
Voltage ↓ ↓
(from detector on
Form-A output only) Cont Op 1 VOff (will not appear unless ordered)
Cont Op 2 VOff (will not appear unless ordered)
↓ ↓
INPUTS/OUTPUTS DIRECT INPUT 1 On Flag is set, logic=1
Direct Inputs ↓ ↓
DIRECT INPUT 32 On Flag is set, logic=1
INPUTS/OUTPUTS: REMOTE INPUT 1 On Flag is set, logic=1
Remote Inputs ↓ ↓

5 INPUTS/OUTPUTS:
REMOTE INPUT 32 On
Virt Ip 1 On
Flag is set, logic=1
Flag is set, logic=1
Virtual Inputs ↓ ↓
Virt Ip 64 On Flag is set, logic=1
INPUTS/OUTPUTS: Virt Op 1 On Flag is set, logic=1
Virtual Outputs ↓ ↓
Virt Op 96 On Flag is set, logic=1
LED TEST LED TEST IN PROGRESS An LED test has been initiated and has not finished.
REMOTE DEVICES REMOTE DEVICE 1 On Flag is set, logic=1
↓ ↓
REMOTE DEVICE 16 On Flag is set, logic=1
REMOTE DEVICE 1 Off Flag is set, logic=1
↓ ↓
REMOTE DEVICE 16 Off Flag is set, logic=1
RESETTING RESET OP Reset command is operated (set by all 3 operands below)
RESET OP (COMMS) Communications source of the reset command
RESET OP (OPERAND) Operand (assigned in the INPUTS/OUTPUTS RESETTING menu) source
of the reset command
RESET OP (PUSHBUTTON) Reset key (pushbutton) source of the reset command

5-56 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.4 FLEXLOGIC™

Table 5–5: B30 FLEXLOGIC™ OPERANDS (Sheet 4 of 4)

OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION
SELF- ANY MAJOR ERROR Any of the major self-test errors generated (major error)
DIAGNOSTICS ANY MINOR ERROR Any of the minor self-test errors generated (minor error)
ANY SELF-TEST Any self-test errors generated (generic, any error)
BATTERY FAIL See description in Chapter 7: Commands and Targets.
DIRECT DEVICE OFF See description in Chapter 7: Commands and Targets.
DIRECT RING BREAK See description in Chapter 7: Commands and Targets.
DSP ERROR See description in Chapter 7: Commands and Targets.
EEPROM DATA ERROR See description in Chapter 7: Commands and Targets.
EQUIPMENT MISMATCH See description in Chapter 7: Commands and Targets.
FLEXLOGIC ERR TOKEN See description in Chapter 7: Commands and Targets.
IRIG-B FAILURE See description in Chapter 7: Commands and Targets.
LATCHING OUT ERROR See description in Chapter 7: Commands and Targets.
LOW ON MEMORY See description in Chapter 7: Commands and Targets.
NO DSP INTERRUPTS See description in Chapter 7: Commands and Targets.
PRI ETHERNET FAIL See description in Chapter 7: Commands and Targets.
PROGRAM MEMORY See description in Chapter 7: Commands and Targets.
PROTOTYPE FIRMWARE See description in Chapter 7: Commands and Targets.
REMOTE DEVICE OFF See description in Chapter 7: Commands and Targets.
SEC ETHERNET FAIL See description in Chapter 7: Commands and Targets.
SNTP FAILURE See description in Chapter 7: Commands and Targets.
SYSTEM EXCEPTION See description in Chapter 7: Commands and Targets.
UNIT NOT CALIBRATED See description in Chapter 7: Commands and Targets.
UNIT NOT PROGRAMMED See description in Chapter 7: Commands and Targets.
WATCHDOG ERROR See description in Chapter 7: Commands and Targets.
UNAUTHORIZED UNAUTHORIZED ACCESS Asserted when a password entry fails while accessing a password-protected
ACCESS ALARM level of the relay.
USER- PUSHBUTTON x ON Pushbutton Number x is in the ’On’ position
PROGRAMMABLE PUSHBUTTON x OFF Pushbutton Number x is in the ’Off’ position
PUSHBUTTONS

Some operands can be re-named by the user. These are the names of the breakers in the breaker control feature, the ID
(identification) of contact inputs, the ID of virtual inputs, and the ID of virtual outputs. If the user changes the default name/
5
ID of any of these operands, the assigned name will appear in the relay list of operands. The default names are shown in
the FlexLogic™ operands table above.
The characteristics of the logic gates are tabulated below, and the operators available in FlexLogic™ are listed in the Flex-
Logic™ operators table.

Table 5–6: FLEXLOGIC™ GATE CHARACTERISTICS

GATES NUMBER OF INPUTS OUTPUT IS ‘1’ (= ON) IF...
NOT 1 input is ‘0’
OR 2 to 16 any input is ‘1’
AND 2 to 16 all inputs are ‘1’
NOR 2 to 16 all inputs are ‘0’
NAND 2 to 16 any input is ‘0’
XOR 2 only one input is ‘1’

GE Multilin B30 Bus Differential Relay 5-57

 5.4 FLEXLOGIC™ 5 SETTINGS

Table 5–7: FLEXLOGIC™ OPERATORS

TYPE SYNTAX DESCRIPTION NOTES
Editor INSERT Insert a parameter in an equation list.
DELETE Delete a parameter from an equation list.
End END The first END encountered signifies the last entry in
the list of processed FlexLogic™ parameters.
One Shot POSITIVE ONE SHOT One shot that responds to a positive going edge. A ‘one shot’ refers to a single input gate
that generates a pulse in response to an
NEGATIVE ONE One shot that responds to a negative going edge. edge on the input. The output from a ‘one
SHOT shot’ is True (positive) for only one pass
DUAL ONE SHOT One shot that responds to both the positive and through the FlexLogic™ equation. There is
negative going edges. a maximum of 64 ‘one shots’.
Logic NOT Logical Not Operates on the previous parameter.
Gate
OR(2) 2 input OR gate Operates on the 2 previous parameters.
↓ ↓ ↓
OR(16) 16 input OR gate Operates on the 16 previous parameters.
AND(2) 2 input AND gate Operates on the 2 previous parameters.
↓ ↓ ↓
AND(16) 16 input AND gate Operates on the 16 previous parameters.
NOR(2) 2 input NOR gate Operates on the 2 previous parameters.
↓ ↓ ↓
NOR(16) 16 input NOR gate Operates on the 16 previous parameters.
NAND(2) 2 input NAND gate Operates on the 2 previous parameters.
↓ ↓ ↓
NAND(16) 16 input NAND gate Operates on the 16 previous parameters.
XOR(2) 2 input Exclusive OR gate Operates on the 2 previous parameters.

5 LATCH (S,R) Latch (Set, Reset) - reset-dominant The parameter preceding LATCH(S,R) is
the Reset input. The parameter preceding
the Reset input is the Set input.
Timer TIMER 1 Timer set with FlexLogic™ Timer 1 settings. The timer is started by the preceding
↓ ↓ parameter. The output of the timer is
TIMER 32 Timer set with FlexLogic™ Timer 32 settings. TIMER #.
Assign = Virt Op 1 Assigns previous FlexLogic™ parameter to Virtual The virtual output is set by the preceding
Virtual ↓ Output 1. parameter
Output = Virt Op 96 ↓
Assigns previous FlexLogic™ parameter to Virtual
Output 96.

5.4.2 FLEXLOGIC™ RULES

When forming a FlexLogic™ equation, the sequence in the linear array of parameters must follow these general rules:
1. Operands must precede the operator which uses the operands as inputs.
2. Operators have only one output. The output of an operator must be used to create a virtual output if it is to be used as
an input to two or more operators.
3. Assigning the output of an operator to a Virtual Output terminates the equation.
4. A timer operator (e.g. "TIMER 1") or virtual output assignment (e.g. " = Virt Op 1") may only be used once. If this rule is
broken, a syntax error will be declared.

5.4.3 FLEXLOGIC™ EVALUATION

Each equation is evaluated in the order in which the parameters have been entered.
FlexLogic™ provides latches which by definition have a memory action, remaining in the set state after the
set input has been asserted. However, they are volatile; i.e. they reset on the re-application of control
CAUTION
power.
When making changes to settings, all FlexLogic™ equations are re-compiled whenever any new setting
value is entered, so all latches are automatically reset. If it is necessary to re-initialize FlexLogic™ during
testing, for example, it is suggested to power the unit down and then back up.

5-58 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.4 FLEXLOGIC™

5.4.4 FLEXLOGIC™ EXAMPLE

This section provides an example of implementing logic for a typical application. The sequence of the steps is quite impor-
tant as it should minimize the work necessary to develop the relay settings. Note that the example presented in the figure
below is intended to demonstrate the procedure, not to solve a specific application situation.
In the example below, it is assumed that logic has already been programmed to produce Virtual Outputs 1 and 2, and is
only a part of the full set of equations used. When using FlexLogic™, it is important to make a note of each Virtual Output
used – a Virtual Output designation (1 to 96) can only be properly assigned once.

VIRTUAL OUTPUT 1
State=ON

VIRTUAL OUTPUT 2
Set
State=ON
LATCH
VIRTUAL INPUT 1 OR #1 Reset
State=ON Timer 2
XOR Time Delay Operate Output
DIGITAL ELEMENT 1 OR #2
on Dropout Relay H1
State=Pickup
(200 ms)

DIGITAL ELEMENT 2 Timer 1

State=Operated Time Delay
AND
on Pickup
(800 ms)
CONTACT INPUT H1c 827025A2.vsd
State=Closed

Figure 5–25: EXAMPLE LOGIC SCHEME

1. Inspect the example logic diagram to determine if the required logic can be implemented with the FlexLogic™ opera-
tors. If this is not possible, the logic must be altered until this condition is satisfied. Once this is done, count the inputs
5
to each gate to verify that the number of inputs does not exceed the FlexLogic™ limits, which is unlikely but possible. If
the number of inputs is too high, subdivide the inputs into multiple gates to produce an equivalent. For example, if 25
inputs to an AND gate are required, connect Inputs 1 through 16 to AND(16), 17 through 25 to AND(9), and the outputs
from these two gates to AND(2).
Inspect each operator between the initial operands and final virtual outputs to determine if the output from the operator
is used as an input to more than one following operator. If so, the operator output must be assigned as a Virtual Output.
For the example shown above, the output of the AND gate is used as an input to both OR#1 and Timer 1, and must
therefore be made a Virtual Output and assigned the next available number (i.e. Virtual Output 3). The final output
must also be assigned to a Virtual Output as Virtual Output 4, which will be programmed in the contact output section
to operate relay H1 (i.e. Output Contact H1).
Therefore, the required logic can be implemented with two FlexLogic™ equations with outputs of Virtual Output 3 and
Virtual Output 4 as shown below.

VIRTUAL OUTPUT 1
State=ON

VIRTUAL OUTPUT 2
Set
State=ON
LATCH
VIRTUAL INPUT 1 OR #1 Reset
State=ON Timer 2
XOR Time Delay
DIGITAL ELEMENT 1 OR #2 VIRTUAL OUTPUT 4
on Dropout
State=Pickup (200 ms)

DIGITAL ELEMENT 2 Timer 1

State=Operated Time Delay
AND
on Pickup
(800 ms)
CONTACT INPUT H1c
State=Closed VIRTUAL OUTPUT 3

827026A2.VSD

Figure 5–26: LOGIC EXAMPLE WITH VIRTUAL OUTPUTS

GE Multilin B30 Bus Differential Relay 5-59

 5.4 FLEXLOGIC™ 5 SETTINGS

2. Prepare a logic diagram for the equation to produce Virtual Output 3, as this output will be used as an operand in the
Virtual Output 4 equation (create the equation for every output that will be used as an operand first, so that when these
operands are required they will already have been evaluated and assigned to a specific Virtual Output). The logic for
Virtual Output 3 is shown below with the final output assigned.

DIGITAL ELEMENT 2
State=Operated

AND(2) VIRTUAL OUTPUT 3

CONTACT INPUT H1c

State=Closed

827027A2.VSD

Figure 5–27: LOGIC FOR VIRTUAL OUTPUT 3

3. Prepare a logic diagram for Virtual Output 4, replacing the logic ahead of Virtual Output 3 with a symbol identified as
Virtual Output 3, as shown below.

VIRTUAL OUTPUT 1
State=ON

VIRTUAL OUTPUT 2
Set
State=ON
LATCH
VIRTUAL INPUT 1 OR #1 Reset
State=ON Timer 2
XOR Time Delay VIRTUAL
DIGITAL ELEMENT 1 OR #2
on Dropout OUTPUT 4
State=Pickup
(200 ms)

Timer 1

5 VIRTUAL OUTPUT 3
State=ON
Time Delay
on Pickup
(800 ms)
CONTACT INPUT H1c
State=Closed 827028A2.VSD

Figure 5–28: LOGIC FOR VIRTUAL OUTPUT 4

4. Program the FlexLogic™ equation for Virtual Output 3 by translating the logic into available FlexLogic™ parameters.
The equation is formed one parameter at a time until the required logic is complete. It is generally easier to start at the
output end of the equation and work back towards the input, as shown in the following steps. It is also recommended to
list operator inputs from bottom to top. For demonstration, the final output will be arbitrarily identified as parameter 99,
and each preceding parameter decremented by one in turn. Until accustomed to using FlexLogic™, it is suggested that
a worksheet with a series of cells marked with the arbitrary parameter numbers be prepared, as shown below.

01
02
03
04
05
.....

97
98
99
827029A1.VSD

Figure 5–29: FLEXLOGIC™ WORKSHEET

5. Following the procedure outlined, start with parameter 99, as follows:
99: The final output of the equation is Virtual Output 3, which is created by the operator "= Virt Op n". This parameter
is therefore "= Virt Op 3."

5-60 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.4 FLEXLOGIC™

98: The gate preceding the output is an AND, which in this case requires two inputs. The operator for this gate is a 2-
input AND so the parameter is “AND(2)”. Note that FlexLogic™ rules require that the number of inputs to most
types of operators must be specified to identify the operands for the gate. As the 2-input AND will operate on the
two operands preceding it, these inputs must be specified, starting with the lower.
97: This lower input to the AND gate must be passed through an inverter (the NOT operator) so the next parameter is
“NOT”. The NOT operator acts upon the operand immediately preceding it, so specify the inverter input next.
96: The input to the NOT gate is to be contact input H1c. The ON state of a contact input can be programmed to be
set when the contact is either open or closed. Assume for this example the state is to be ON for a closed contact.
The operand is therefore “Cont Ip H1c On”.
95: The last step in the procedure is to specify the upper input to the AND gate, the operated state of digital element 2.
This operand is "DIG ELEM 2 OP".
Writing the parameters in numerical order can now form the equation for VIRTUAL OUTPUT 3:
[95] DIG ELEM 2 OP
[96] Cont Ip H1c On
[97] NOT
[98] AND(2)
[99] = Virt Op 3
It is now possible to check that this selection of parameters will produce the required logic by converting the set of parame-
ters into a logic diagram. The result of this process is shown below, which is compared to the Logic for Virtual Output 3 dia-
gram as a check.
FLEXLOGIC ENTRY n:
95 DIG ELEM 2 OP VIRTUAL
AND
FLEXLOGIC ENTRY n: OUTPUT 3
96 Cont Ip H1c On
FLEXLOGIC ENTRY n:
5
97 NOT
FLEXLOGIC ENTRY n:
98 AND (2)
FLEXLOGIC ENTRY n:
99 =Virt Op 3
827030A2.VSD

Figure 5–30: FLEXLOGIC™ EQUATION FOR VIRTUAL OUTPUT 3

6. Repeating the process described for VIRTUAL OUTPUT 3, select the FlexLogic™ parameters for Virtual Output 4.
99: The final output of the equation is VIRTUAL OUTPUT 4 which is parameter “= Virt Op 4".
98: The operator preceding the output is Timer 2, which is operand “TIMER 2". Note that the settings required for the
timer are established in the timer programming section.
97: The operator preceding Timer 2 is OR #2, a 3-input OR, which is parameter “OR(3)”.
96: The lowest input to OR #2 is operand “Cont Ip H1c On”.
95: The center input to OR #2 is operand “TIMER 1".
94: The input to Timer 1 is operand “Virt Op 3 On".
93: The upper input to OR #2 is operand “LATCH (S,R)”.
92: There are two inputs to a latch, and the input immediately preceding the latch reset is OR #1, a 4-input OR, which
is parameter “OR(4)”.
91: The lowest input to OR #1 is operand “Virt Op 3 On".
90: The input just above the lowest input to OR #1 is operand “XOR(2)”.
89: The lower input to the XOR is operand “DIG ELEM 1 PKP”.
88: The upper input to the XOR is operand “Virt Ip 1 On".
87: The input just below the upper input to OR #1 is operand “Virt Op 2 On".
86: The upper input to OR #1 is operand “Virt Op 1 On".
85: The last parameter is used to set the latch, and is operand “Virt Op 4 On".

GE Multilin B30 Bus Differential Relay 5-61

 5.4 FLEXLOGIC™ 5 SETTINGS

The equation for VIRTUAL OUTPUT 4 is:

[85] Virt Op 4 On
[86] Virt Op 1 On
[87] Virt Op 2 On
[88] Virt Ip 1 On
[89] DIG ELEM 1 PKP
[90] XOR(2)
[91] Virt Op 3 On
[92] OR(4)
[93] LATCH (S,R)
[94] Virt Op 3 On
[95] TIMER 1
[96] Cont Ip H1c On
[97] OR(3)
[98] TIMER 2
[99] = Virt Op 4
It is now possible to check that the selection of parameters will produce the required logic by converting the set of parame-
ters into a logic diagram. The result of this process is shown below, which is compared to the Logic for Virtual Output 4 dia-
gram as a check.

FLEXLOGIC ENTRY n:
85 Virt Op 4 On
FLEXLOGIC ENTRY n:
86 Virt Op 1 On
FLEXLOGIC ENTRY n:

5 87
88
Virt Op 2 On
FLEXLOGIC ENTRY n:
Set
LATCH
Virt Ip 1 On
XOR OR Reset
FLEXLOGIC ENTRY n:
89 DIG ELEM 1 PKP
FLEXLOGIC ENTRY n:
90 XOR
FLEXLOGIC ENTRY n:
91 Virt Op 3 On VIRTUAL
OR T2 OUTPUT 4
FLEXLOGIC ENTRY n:
92 OR (4)
FLEXLOGIC ENTRY n:
93 LATCH (S,R)
FLEXLOGIC ENTRY n:
94 Virt Op 3 On T1
FLEXLOGIC ENTRY n:
95 TIMER 1
FLEXLOGIC ENTRY n:
96 Cont Ip H1c On
FLEXLOGIC ENTRY n:
97 OR (3)
FLEXLOGIC ENTRY n:
98 TIMER 2
FLEXLOGIC ENTRY n:
99 =Virt Op 4 827031A2.VSD

Figure 5–31: FLEXLOGIC™ EQUATION FOR VIRTUAL OUTPUT 4

7. Now write the complete FlexLogic™ expression required to implement the logic, making an effort to assemble the
equation in an order where Virtual Outputs that will be used as inputs to operators are created before needed. In cases
where a lot of processing is required to perform logic, this may be difficult to achieve, but in most cases will not cause
problems as all logic is calculated at least 4 times per power frequency cycle. The possibility of a problem caused by
sequential processing emphasizes the necessity to test the performance of FlexLogic™ before it is placed in service.
In the following equation, Virtual Output 3 is used as an input to both Latch 1 and Timer 1 as arranged in the order
shown below:
DIG ELEM 2 OP
Cont Ip H1c On
NOT
AND(2)

5-62 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.4 FLEXLOGIC™

= Virt Op 3
Virt Op 4 On
Virt Op 1 On
Virt Op 2 On
Virt Ip 1 On
DIG ELEM 1 PKP
XOR(2)
Virt Op 3 On
OR(4)
LATCH (S,R)
Virt Op 3 On
TIMER 1
Cont Ip H1c On
OR(3)
TIMER 2
= Virt Op 4
END
In the expression above, the Virtual Output 4 input to the 4-input OR is listed before it is created. This is typical of a
form of feedback, in this case, used to create a seal-in effect with the latch, and is correct.
8. The logic should always be tested after it is loaded into the relay, in the same fashion as has been used in the past.
Testing can be simplified by placing an "END" operator within the overall set of FlexLogic™ equations. The equations
will then only be evaluated up to the first "END" operator.
The "On" and "Off" operands can be placed in an equation to establish a known set of conditions for test purposes, and
the "INSERT" and "DELETE" commands can be used to modify equations.

5.4.5 FLEXLOGIC™ EQUATION EDITOR

5
PATH: SETTINGS FLEXLOGIC FLEXLOGIC EQUATION EDITOR

FLEXLOGIC FLEXLOGIC ENTRY 1: Range: FlexLogic™ parameters

EQUATION EDITOR END
↓

FLEXLOGIC ENTRY 512: Range: FlexLogic™ parameters

MESSAGE
END

There are 512 FlexLogic™ entries available, numbered from 1 to 512, with default ‘END’ entry settings. If a "Disabled" Ele-
ment is selected as a FlexLogic™ entry, the associated state flag will never be set to ‘1’. The ‘+/–‘ key may be used when
editing FlexLogic™ equations from the keypad to quickly scan through the major parameter types.

5.4.6 FLEXLOGIC™ TIMERS

PATH: SETTINGS FLEXLOGIC FLEXLOGIC TIMERS FLEXLOGIC TIMER 1(32)

FLEXLOGIC TIMER 1 Range: millisecond, second, minute

TIMER 1 TYPE: millisecond
TIMER 1 PICKUP Range: 0 to 60000 in steps of 1
MESSAGE
DELAY: 0
TIMER 1 DROPOUT Range: 0 to 60000 in steps of 1
MESSAGE
DELAY: 0

There are 32 identical FlexLogic™ timers available. These timers can be used as operators for FlexLogic™ equations.
• TIMER 1 TYPE: This setting is used to select the time measuring unit.
• TIMER 1 PICKUP DELAY: Sets the time delay to pickup. If a pickup delay is not required, set this function to "0".
• TIMER 1 DROPOUT DELAY: Sets the time delay to dropout. If a dropout delay is not required, set this function to "0".

GE Multilin B30 Bus Differential Relay 5-63

 5.4 FLEXLOGIC™ 5 SETTINGS

5.4.7 FLEXELEMENTS™

PATH: SETTING FLEXLOGIC FLEXELEMENTS FLEXELEMENT 1(8)

FLEXELEMENT 1 FLEXELEMENT 1 Range: Disabled, Enabled

FUNCTION: Disabled
FLEXELEMENT 1 NAME: Range: up to 6 alphanumeric characters
MESSAGE
FxE1
FLEXELEMENT 1 +IN: Range: Off, any analog actual value parameter
MESSAGE
Off
FLEXELEMENT 1 -IN: Range: Off, any analog actual value parameter
MESSAGE
Off
FLEXELEMENT 1 INPUT Range: Signed, Absolute
MESSAGE
MODE: Signed
FLEXELEMENT 1 COMP Range: Level, Delta
MESSAGE
MODE: Level
FLEXELEMENT 1 Range: Over, Under
MESSAGE
DIRECTION: Over
FLEXELEMENT 1 Range: –90.000 to 90.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.000 pu
FLEXELEMENT 1 Range: 0.1 to 50.0% in steps of 0.1

5 MESSAGE
HYSTERESIS: 3.0%
FLEXELEMENT 1 dt Range: milliseconds, seconds, minutes
MESSAGE
UNIT: milliseconds
FLEXELEMENT 1 dt: Range: 20 to 86400 in steps of 1
MESSAGE
20
FLEXELEMENT 1 PKP Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
DELAY: 0.000 s
FLEXELEMENT 1 RST Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
DELAY: 0.000 s
FLEXELEMENT 1 BLK: Range: FlexLogic™ operand
MESSAGE
Off
FLEXELEMENT 1 Range: Self-reset, Latched, Disabled
MESSAGE
TARGET: Self-reset
FLEXELEMENT 1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

A FlexElement™ is a universal comparator that can be used to monitor any analog actual value calculated by the relay or a
net difference of any two analog actual values of the same type. The effective operating signal could be treated as a signed
number or its absolute value could be used as per user's choice.
The element can be programmed to respond either to a signal level or to a rate-of-change (delta) over a pre-defined period
of time. The output operand is asserted when the operating signal is higher than a threshold or lower than a threshold as
per user's choice.

5-64 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.4 FLEXLOGIC™

SETTING
SETTINGS
FLEXELEMENT 1
FUNCTION: FLEXELEMENT 1 INPUT
MODE:
Enabled = 1
FLEXELEMENT 1 COMP
MODE:
Disabled = 0
FLEXELEMENT 1
DIRECTION:
SETTING
FLEXELEMENT 1 PICKUP:
FLEXELEMENT 1 BLK:
FLEXELEMENT 1 INPUT
AND HYSTERESIS:
Off = 0
FLEXELEMENT 1 dt UNIT: SETTINGS

SETTINGS FLEXELEMENT 1 PKP

FLEXELEMENT 1 dt: DELAY:
FLEXELEMENT 1 +IN: FLEXELEMENT 1 RST
RUN DELAY:
Actual Value FLEXLOGIC OPERANDS
+ tPKP
FLEXELEMENT 1 -IN: FxE 1 OP
- tRST
Actual Value FxE 1 DPO

FxE 1 PKP

ACTUAL VALUE

FlexElement 1 OpSig 842004A3.CDR

Figure 5–32: FLEXELEMENT™ SCHEME LOGIC

The FLEXELEMENT 1 +IN setting specifies the first (non-inverted) input to the FlexElement™. Zero is assumed as the input if
this setting is set to “Off”. For proper operation of the element at least one input must be selected. Otherwise, the element
will not assert its output operands.
5
This FLEXELEMENT 1 –IN setting specifies the second (inverted) input to the FlexElement™. Zero is assumed as the input if
this setting is set to “Off”. For proper operation of the element at least one input must be selected. Otherwise, the element
will not assert its output operands. This input should be used to invert the signal if needed for convenience, or to make the
element respond to a differential signal such as for a top-bottom oil temperature differential alarm. The element will not
operate if the two input signals are of different types, for example if one tries to use active power and phase angle to build
the effective operating signal.
The element responds directly to the differential signal if the FLEXELEMENT 1 INPUT MODE setting is set to “Signed”. The ele-
ment responds to the absolute value of the differential signal if this setting is set to “Absolute”. Sample applications for the
“Absolute” setting include monitoring the angular difference between two phasors with a symmetrical limit angle in both
directions; monitoring power regardless of its direction, or monitoring a trend regardless of whether the signal increases of
decreases.
The element responds directly to its operating signal – as defined by the FLEXELEMENT 1 +IN, FLEXELEMENT 1 –IN and FLEX-
ELEMENT 1 INPUT MODE settings – if the FLEXELEMENT 1 COMP MODE setting is set to “Level”. The element responds to the
rate of change of its operating signal if the FLEXELEMENT 1 COMP MODE setting is set to “Delta”. In this case the FLEXELE-
MENT 1 dt UNIT and FLEXELEMENT 1 dt settings specify how the rate of change is derived.

The FLEXELEMENT 1 DIRECTION setting enables the relay to respond to either high or low values of the operating signal. The
following figure explains the application of the FLEXELEMENT 1 DIRECTION, FLEXELEMENT 1 PICKUP and FLEXELEMENT 1 HYS-
TERESIS settings.

GE Multilin B30 Bus Differential Relay 5-65

 5.4 FLEXLOGIC™ 5 SETTINGS

FLEXELEMENT 1 PKP

FLEXELEMENT
DIRECTION = Over

HYSTERESIS = % of PICKUP

FlexElement 1 OpSig

PICKUP
FLEXELEMENT 1 PKP

FLEXELEMENT
DIRECTION = Under

HYSTERESIS = % of PICKUP

FlexElement 1 OpSig

PICKUP
842705A1.CDR

Figure 5–33: FLEXELEMENT™ DIRECTION, PICKUP, AND HYSTERESIS

In conjunction with the FLEXELEMENT 1 INPUT MODE setting the element could be programmed to provide two extra charac-
teristics as shown in the figure below.

FLEXELEMENT 1 PKP

5 FLEXELEMENT
DIRECTION = Over;
FLEXELEMENT INPUT
MODE = Signed;

FlexElement 1 OpSig

FLEXELEMENT 1 PKP

FLEXELEMENT
DIRECTION = Over;
FLEXELEMENT INPUT
MODE = Absolute;

FlexElement 1 OpSig

FLEXELEMENT 1 PKP

FLEXELEMENT
DIRECTION = Under;
FLEXELEMENT INPUT
MODE = Signed;

FlexElement 1 OpSig

FLEXELEMENT 1 PKP

FLEXELEMENT
DIRECTION = Under;
FLEXELEMENT INPUT
MODE = Absolute;

FlexElement 1 OpSig
842706A2.CDR

Figure 5–34: FLEXELEMENT™ INPUT MODE SETTING

5-66 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.4 FLEXLOGIC™

The FLEXELEMENT 1 PICKUP setting specifies the operating threshold for the effective operating signal of the element. If set
to “Over”, the element picks up when the operating signal exceeds the FLEXELEMENT 1 PICKUP value. If set to “Under”, the
element picks up when the operating signal falls below the FLEXELEMENT 1 PICKUP value.
The FLEXELEMENT 1 HYSTERESIS setting controls the element dropout. It should be noticed that both the operating signal
and the pickup threshold can be negative facilitating applications such as reverse power alarm protection. The FlexEle-
ment™ can be programmed to work with all analog actual values measured by the relay. The FLEXELEMENT 1 PICKUP set-
ting is entered in per-unit values using the following definitions of the base units:

Table 5–8: FLEXELEMENT™ BASE UNITS

BUS DIFFERENTIAL IBASE = maximum primary RMS value of the +IN and –IN inputs
RESTRAINING CURRENT (CT primary for source currents, and bus reference primary current for bus differential currents)
(Bus Diff Mag)
BUS DIFFERENTIAL IBASE = maximum primary RMS value of the +IN and – IN inputs
RESTRAINING CURRENT (CT primary for source currents, and bus reference primary current for bus differential currents)
(Bus Rest Mag)
dcmA BASE = maximum value of the DCMA INPUT MAX setting for the two transducers configured
under the +IN and –IN inputs.
FREQUENCY fBASE = 1 Hz
PHASE ANGLE ϕBASE = 360 degrees (see the UR angle referencing convention)
POWER FACTOR PFBASE = 1.00
RTDs BASE = 100°C
SOURCE CURRENT IBASE = maximum nominal primary RMS value of the +IN and –IN inputs
SOURCE POWER PBASE = maximum value of VBASE × IBASE for the +IN and –IN inputs
SOURCE VOLTAGE VBASE = maximum nominal primary RMS value of the +IN and –IN inputs
5
The FLEXELEMENT 1 HYSTERESIS setting defines the pickup–dropout relation of the element by specifying the width of the
hysteresis loop as a percentage of the pickup value as shown in the FlexElement™ Direction, Pickup, and Hysteresis dia-
gram.
The FLEXELEMENT 1 DT UNIT setting specifies the time unit for the setting FLEXELEMENT 1 dt. This setting is applicable only if
FLEXELEMENT 1 COMP MODE is set to “Delta”. The FLEXELEMENT 1 DT setting specifies duration of the time interval for the
rate of change mode of operation. This setting is applicable only if FLEXELEMENT 1 COMP MODE is set to “Delta”.
This FLEXELEMENT 1 PKP DELAY setting specifies the pickup delay of the element. The FLEXELEMENT 1 RST DELAY setting
specifies the reset delay of the element.

GE Multilin B30 Bus Differential Relay 5-67

 5.4 FLEXLOGIC™ 5 SETTINGS

5.4.8 NON-VOLATILE LATCHES

PATH: SETTINGS FLEXLOGIC NON-VOLATILE LATCHES LATCH 1(16)

LATCH 1 LATCH 1 Range: Disabled, Enabled

FUNCTION: Disabled
LATCH 1 TYPE: Range: Reset Dominant, Set Dominant
MESSAGE
Reset Dominant
LATCH 1 SET: Range: FlexLogic™ operand
MESSAGE
Off
LATCH 1 RESET: Range: FlexLogic™ operand
MESSAGE
Off
LATCH 1 Range: Self-reset, Latched, Disabled
MESSAGE
TARGET: Self-reset
LATCH 1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

The non-volatile latches provide a permanent logical flag that is stored safely and will not reset upon reboot after the relay
is powered down. Typical applications include sustaining operator commands or permanently block relay functions, such as
Autorecloser, until a deliberate HMI action resets the latch. The settings, logic, and element operation are described below:
• LATCH 1 TYPE: This setting characterizes Latch 1 to be Set- or Reset-dominant.
• LATCH 1 SET: If asserted, the specified FlexLogic™ operands 'sets' Latch 1.
5 • LATCH 1 RESET: If asserted, the specified FlexLogic™ operand 'resets' Latch 1.

SETTING
SETTING
LATCH N LATCH N LATCH N LATCH N LATCH N LATCH 1 FUNCTION:
TYPE SET RESET ON OFF
LATCH 1 TYPE:
Reset ON OFF ON OFF Disabled=0
Dominant Enabled=1 RUN
OFF OFF Previous Previous
State State
ON ON OFF ON SETTING

OFF ON OFF ON LATCH 1 SET:

FLEXLOGIC OPERANDS
Set ON OFF ON OFF
Dominant Off=0 SET LATCH 1 ON
ON ON ON OFF LATCH 1 OFF
OFF OFF Previous Previous SETTING
State State
LATCH 1 SET:
OFF ON OFF ON
Off=0 RESET
842005A1.CDR

Figure 5–35: NON-VOLATILE LATCH OPERATION TABLE (N=1 to 16) AND LOGIC

5-68 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

5.5GROUPED ELEMENTS 5.5.1 OVERVIEW

Each protection element can be assigned up to six different sets of settings according to Setting Group designations 1 to 6.
The performance of these elements is defined by the active Setting Group at a given time. Multiple setting groups allow the
user to conveniently change protection settings for different operating situations (e.g. altered power system configuration,
season of the year). The active setting group can be preset or selected via the SETTING GROUPS menu (see the Control Ele-
ments section later in this chapter). See also the Introduction to Elements section at the beginning of this chapter.

5.5.2 SETTING GROUP

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6)

SETTING GROUP 1 BUS DIFFERENTIAL

See below.

PHASE CURRENT
MESSAGE See page 5-73.

NEUTRAL CURRENT
MESSAGE See page 5-81.

GROUND CURRENT
MESSAGE See page 5-83.

BREAKER FAILURE
MESSAGE See page 5-85.

MESSAGE
VOLTAGE ELEMENTS
See page 5-94. 5
Each of the six setting group menus is identical. Setting Group 1 (the default active group) automatically becomes active if
no other group is active (see Section 5.6.2: Setting Groups on page 5–99 for further details).

5.5.3 BUS DIFFERENTIAL

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) BUS DIFFERENTIAL BUS ZONE 1 DIFFERENTIAL

BUS ZONE 1 BUS ZONE 1 DIFF Range: Disabled, Enabled

DIFFERENTIAL FUNCTION: Disabled
BUS ZONE 1 DIFF Range: 0.050 to 2.000 pu in steps of 0.001
MESSAGE
PICKUP: 0.100 pu
BUS ZONE 1 DIFF Range: 15 to 100% in steps of 1
MESSAGE
LOW SLOPE: 25%
BUS ZONE 1 DIFF Range: 1.00 to 30.00 pu in steps of 0.01
MESSAGE
LOW BPNT: 2.00 pu
BUS ZONE 1 DIF Range: 50 to 100% in steps of 1
MESSAGE
HIGH SLOPE: 60%
BUS ZONE 1 DIFF Range: 1.00 to 30.00 pu in steps of 0.01
MESSAGE
HIGH BPNT: 8.00 pu
BUS ZONE 1 DIFF Range: 0.10 to 99.99 pu in steps of 0.01
MESSAGE
HIGH SET: 15.00 pu
BUS ZONE 1 DIFF Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
SEAL-IN: 0.400 s
BUS ZONE 1 DIFF BLK: Range: FlexLogic™ operand
MESSAGE
Off

GE Multilin B30 Bus Differential Relay 5-69

 5.5 GROUPED ELEMENTS 5 SETTINGS

BUS ZONE 1 DIFF Range: Self-reset, Latched, Disabled

MESSAGE
TARGET: Latched
BUS ZONE 1 DIFF Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

The operation of this element is completely dependent on the dynamic bus replica, which must be defined first. Both biased
and unbiased bus differential protection functions are provided for the bus differential zone.
The biased bus differential function has a dual-slope operating characteristic (see figure below) operating in conjunction
with saturation detection and a directional comparison principle (refer to the Bus Zone 1 Differential Scheme Logic figure in
this section).

|Id|
differential

OPERATE
HIGH
SLOPE

BLOCK

5
LOW
SLOPE Ir
PICKUP
HIGH BPNT
LOW BPNT

restraining

836720A1.CDR

Figure 5–36: BIASED DIFFERENTIAL OPERATING CHARACTERISTIC

The protected zone input current with the highest magnitude is used as the restraining signal. Stability during heavy exter-
nal faults is achieved by dynamic CT saturation detection and current flow direction supervision without affecting sensitivity
and speed of operation for internal faults.
The differential operating characteristic is divided into two regions. In the region of low differential currents and lower slope,
the element operates on a 2-out-of-2 basis, applying both the differential and current directional tests. In the region of high
differential currents, the element operates on a dynamic 1-out-of-2 / 2-out-of-2 basis. If the differential current is in this
region and CT saturation is detected, both the differential and current directional tests are applied. If CT saturation is ruled
out by the saturation detector, the differential protection principle alone is capable of causing the element to operate.
The saturation detector is an integral part of the bus differential element. It has no settings but uses some of the differential
characteristic parameters. The flags indicating CT saturation are available on a per phase basis as FlexLogic™ operands.
The directional principle is an integral part of the biased bus differential element and has no associated settings. The direc-
tional element dynamically identifies what appears to be the faulted circuit and compares its current angle with that of the
sum of the remaining currents of the protected zone. The element declares a bus fault if the angle is less than 90°. Direc-
tional indicating flags signal operation on a per-phase basis and are available as FlexLogic™ operands.
The unbiased bus differential function checks the magnitude of the differential current against an adjustable threshold. Nei-
ther the bias nor the directional principles apply. The operation of the unbiased differential function is associated with sepa-
rate output operands. More information can be found in the Theory of Operation chapter.
Operation of this element is completely dependent on the dynamic bus replica which must be first defined under Bus Zone
1. The bus differential element 1 protects the differential zone defined as Bus Zone 1.
• BUS ZONE 1 DIFF PICKUP: This setting defines the minimum differential current required for operation of the biased
bus differential protection element. This setting is chosen based on the maximum magnitude of the differential current
that might be seen under no-load conditions. This setting prevents relay maloperation in the situation when the bus
carries little power and the restraining signal is too low to provide enough bias in the first slope region of the differential
characteristic.

5-70 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

This setting may also be set above the maximum load level to ensure security during CT trouble conditions. However,
voltage supervision or a check-zone are better alternatives.
• BUS ZONE 1 DIFF LOW SLOPE: This setting defines the percentage bias for the restraining currents, from zero to the
lower breakpoint (LOW BPNT). This setting determines the sensitivity of the relay for low current internal faults. The
value chosen should be high enough to accommodate the spurious differential current resulting from inaccuracy of the
CTs operating in their linear mode, i.e. in load conditions and during distant external faults. When adjusting this setting,
it must be kept in mind that the restraining signal used by the biased bus differential protection element is created as
the maximum of all the input currents.
• BUS ZONE 1 DIFF LOW BPNT: This setting defines the lower breakpoint of the dual-slope operating characteristic.
The percentage bias applied for the restraining current from zero to the value specified as LOW BPNT is given by the
LOW SLOPE setting. This setting should be set above the maximum load current. The LOW BPNT may be moved to the
AC current under which all the CTs are guaranteed to transform without saturation. This includes the effect of residual
magnetism. When adjusting this setting, it must be kept in mind that the restraining signal is created as the maximum
of all the input currents.
• BUS ZONE 1 DIFF HIGH SLOPE: This setting defines the percentage bias for the restraining currents above the
higher breakpoint (HIGH BPNT). This setting affects stability of the relay for heavy external faults. Traditionally, the
value chosen for this setting should be high enough to accommodate the spurious differential current resulting from
saturation of the CTs during heavy external faults. This requirement may be considerably relaxed in favor of sensitivity
and speed of operation as the relay detects CT saturation and upon detection applies the directional principle to pre-
vent maloperation. When adjusting this setting, it must be kept in mind that the restraining signal is created as the max-
imum of all the input currents.
• BUS ZONE 1 DIFF HIGH BPNT: This setting defines the higher breakpoint of the dual-slope operating characteristic.
The percentage bias applied for the restraining current above the value specified as HIGH BPNT is given by the HIGH
SLOPE setting. The HIGH BPNT setting should be set below the minimum AC current that is likely to saturate the weak-
est CT feeding the relay. When adjusting this setting, it must be kept in that mind the restraining signal is created as the 5
maximum of all the input currents.
The dual-slope operating characteristic of the biased bus differential protection element is shaped to ensure true per-
centage bias for high restraining currents (see the following Figure). This means that the straight line defining the
upper slope intersects the origin of the differential-restraining plane and a discontinuity appears between the low and
high slope regions (between the LOW BPNT and HIGH BPNT settings). This discontinuity is handled by approximating the
operate/no-operate boundary of the characteristic using a certain “gluing” function. This ensures smooth transition of
the slope from LOW SLOPE (lower value) to HIGH SLOPE (higher value).
The following parameters of the biased operating characteristic are used by the saturation detector: LOW SLOPE, HIGH
SLOPE, and HIGH BPNT. The saturation detector uses these settings to detect specific relations between the differential
and restraining currents. The values of these settings should be selected based on the aforementioned criteria related
to the art of bus differential protection.
• BUS ZONE 1 DIFF HIGH SET: This setting defines the minimum differential current required for operation of the unbi-
ased bus differential protection function. This setting is based on the maximum magnitude of the differential current
that might be seen during heavy external faults causing deep CT saturation. When selecting this setting, keep in mind
that the unbiased bus differential protection function uses the full-cycle Fourier measuring algorithm and applies it to
pre-filtered samples of the input currents. As a result, the transient measuring errors including the effect of the DC
component are below 2%. During heavy CT saturation when the currents are significantly distorted, the magnitude of
the differential current as measured by the relay and used by the unbiased bus differential function is significantly lower
than both the peak values of the waveform and the true RMS value. The measured magnitude practically reflects the
power system frequency component alone. This allows for lower values of the HIGH SET setting.
The unbiased (high set) differential function can be virtually disabled by setting its operating threshold, HIGH SET, very
high.
• BUS ZONE 1 DIFF SEAL-IN: This setting defines the drop-out time of the seal-in timer applied to the BUS 1 OP Flex-
Logic™ operand.
More information on the Bus Zone Differential settings can be found in the Application of Settings chapter.

GE Multilin B30 Bus Differential Relay 5-71

 5

5-72
SETTING
BUS ZONE 1 DIFF
FUNCTION:
Disable = 0
SETTING
Enable=1
BUS ZONE 1 DIFF
HIGH SET:
SETTING FLEXLOGIC OPERANDS
AND RUN
BUS ZONE 1 DIFF | Iad1 | > HIGH SET BUS 1 UNBIASED OP A
BLOCK: BUS 1 UNBIASED DPO A
RUN
Off = 0 | Ibd1 | > HIGH SET BUS 1 UNBIASED OP B
BUS 1 UNBIASED DPO B
RUN
| Icd1 | > HIGH SET BUS 1 UNBIASED OP C
5.5 GROUPED ELEMENTS

BUS 1 UNBIASED DPO C

SETTING
SETTING BUS ZONE 1 DIFF
abc abc abc abc
BUS ZONE 1A SOURCE: OR SEAL-IN:
FLEXLOGIC OPERAND
Ia 0
OR t DPO BUS 1 OP
Ib
abc abc abc abc BUS 1 DPO
Ic OR
ia
ib AND
FLEXLOGIC OPERANDS

SAMPLES PHASORS
ic
OR BUS 1 BIASED OP A
OR
BUS 1 BIASED DPO A
AND
SETTING
BUS ZONE 1A STATUS:
Off = 0 AND
FLEXLOGIC OPERANDS
SETTING OR BUS 1 BIASED OP B
OR
BUS ZONE 1 DIFF BUS 1 BIASED DPO B
... ... ... PICKUP: AND

BUS ZONE 1 DIFF

LOW SLOPE:
AND
BUS ZONE 1 DIFF FLEXLOGIC OPERANDS
SETTING
LOW BPNT:
BUS ZONE 1F SOURCE: OR BUS 1 BIASED OP C
OR
BUS ZONE 1 DIFF BUS 1 BIASED DPO C
Ia AND
HIGH SLOPE:
Ib
BUS ZONE 1 DIFF

B30 Bus Differential Relay

Ic abc HIGH BPNT:

DIFFERENTIAL AND RESTRAINING CURRENTS

ia OR
Icd1 RUN d iffe r e n tia l
ib

SAMPLES PHASORS
ic Ibd1

restraining
FLEXLOGIC OPERANDS
Iad1 BUS 1 BIASED PKP A
OR BUS 1 BIASED PKP B
d iffe r e n tia l
BUS 1 BIASED PKP C
Icr1

restraining

Figure 5–37: BUS ZONE 1 DIFFERENTIAL SCHEME LOGIC

SETTING Ibr1
BUS ZONE 1F STATUS: Iar1 OR
Off = 0 FLEXLOGIC OPERANDS
CURRENT BUS 1 DIR A
DIRECTIONAL BUS 1 DIR B
ELEMENT BUS 1 DIR C

FLEXLOGIC OPERANDS
BUS 1 SAT A
SATURATION
BUS 1 SAT B
DETECTOR
BUS 1 SAT C

836721A6.CDR
5 SETTINGS

GE Multilin
 5 SETTINGS 5.5 GROUPED ELEMENTS

5.5.4 PHASE CURRENT

a) MAIN MENU
PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) PHASE CURRENT

PHASE CURRENT PHASE TOC1

See page 5–78.

PHASE TOC2
MESSAGE See page 5–78.

PHASE TOC3
MESSAGE See page 5–78.

PHASE TOC4
MESSAGE See page 5–78.

PHASE TOC5 Note: Seen only if slot F or slot M has an 8H or 8J CT

MESSAGE module installed.

PHASE TOC6 Note: Seen only if slot F or slot M has an 8H or 8J CT

MESSAGE module installed.

PHASE IOC1
MESSAGE See page 5–80.

PHASE IOC2
MESSAGE

b) INVERSE TOC CURVE CHARACTERISTICS

5
The inverse time overcurrent curves used by the time overcurrent elements are the IEEE, IEC, GE Type IAC, and I2t stan-
dard curve shapes. This allows for simplified coordination with downstream devices. If however, none of these curve
shapes is adequate, FlexCurves™ may be used to customize the inverse time curve characteristics. The Definite Time
curve is also an option that may be appropriate if only simple protection is required.

Table 5–9: OVERCURRENT CURVE TYPES

IEEE IEC GE TYPE IAC OTHER
IEEE Extremely Inv. IEC Curve A (BS142) IAC Extremely Inv. I2t
IEEE Very Inverse IEC Curve B (BS142) IAC Very Inverse FlexCurves™ A, B, C, and D
IEEE Moderately Inv. IEC Curve C (BS142) IAC Inverse Recloser Curves
IEC Short Inverse IAC Short Inverse Definite Time

A time dial multiplier setting allows selection of a multiple of the base curve shape (where the time dial multiplier = 1) with
the curve shape (CURVE) setting. Unlike the electromechanical time dial equivalent, operate times are directly proportional
to the time multiplier (TD MULTIPLIER) setting value. For example, all times for a multiplier of 10 are 10 times the multiplier 1
or base curve values. Setting the multiplier to zero results in an instantaneous response to all current levels above pickup.
Time overcurrent time calculations are made with an internal ‘energy capacity’ memory variable. When this variable indi-
cates that the energy capacity has reached 100%, a time overcurrent element will operate. If less than 100% energy capac-
ity is accumulated in this variable and the current falls below the dropout threshold of 97 to 98% of the pickup value, the
variable must be reduced. Two methods of this resetting operation are available: “Instantaneous” and “Timed”. The “Instan-
taneous” selection is intended for applications with other relays, such as most static relays, which set the energy capacity
directly to zero when the current falls below the reset threshold. The “Timed” selection can be used where the relay must
coordinate with electromechanical relays.

GE Multilin B30 Bus Differential Relay 5-73

 5.5 GROUPED ELEMENTS 5 SETTINGS

IEEE CURVES:
The IEEE time overcurrent curve shapes conform to industry standards and the IEEE C37.112-1996 curve classifications
for extremely, very, and moderately inverse. The IEEE curves are derived from the formulae:

A tr
---------------------------------- + B ---------------------------------
-
I -⎞ p
T = TDM × ⎛ --------------- , T = TDM × ⎛ ----------------⎞ 2 – 1
I (EQ 5.4)
⎝ I pickup⎠ – 1
RESET
⎝ I pickup⎠

where: T = operate time (in seconds), TDM = Multiplier setting, I = input current, Ipickup = Pickup Current setting
A, B, p = constants, TRESET = reset time in seconds (assuming energy capacity is 100% and RESET is “Timed”),
tr = characteristic constant

Table 5–10: IEEE INVERSE TIME CURVE CONSTANTS

IEEE CURVE SHAPE A B P TR
IEEE Extremely Inverse 28.2 0.1217 2.0000 29.1
IEEE Very Inverse 19.61 0.491 2.0000 21.6
IEEE Moderately Inverse 0.0515 0.1140 0.02000 4.85

Table 5–11: IEEE CURVE TRIP TIMES (IN SECONDS)

MULTIPLIER CURRENT ( I / Ipickup)
(TDM)
1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
IEEE EXTREMELY INVERSE

5 0.5
1.0
11.341
22.682
4.761
9.522
1.823
3.647
1.001
2.002
0.648
1.297
0.464
0.927
0.355
0.709
0.285
0.569
0.237
0.474
0.203
0.407
2.0 45.363 19.043 7.293 4.003 2.593 1.855 1.418 1.139 0.948 0.813
4.0 90.727 38.087 14.587 8.007 5.187 3.710 2.837 2.277 1.897 1.626
6.0 136.090 57.130 21.880 12.010 7.780 5.564 4.255 3.416 2.845 2.439
8.0 181.454 76.174 29.174 16.014 10.374 7.419 5.674 4.555 3.794 3.252
10.0 226.817 95.217 36.467 20.017 12.967 9.274 7.092 5.693 4.742 4.065
IEEE VERY INVERSE
0.5 8.090 3.514 1.471 0.899 0.654 0.526 0.450 0.401 0.368 0.345
1.0 16.179 7.028 2.942 1.798 1.308 1.051 0.900 0.802 0.736 0.689
2.0 32.358 14.055 5.885 3.597 2.616 2.103 1.799 1.605 1.472 1.378
4.0 64.716 28.111 11.769 7.193 5.232 4.205 3.598 3.209 2.945 2.756
6.0 97.074 42.166 17.654 10.790 7.849 6.308 5.397 4.814 4.417 4.134
8.0 129.432 56.221 23.538 14.387 10.465 8.410 7.196 6.418 5.889 5.513
10.0 161.790 70.277 29.423 17.983 13.081 10.513 8.995 8.023 7.361 6.891
IEEE MODERATELY INVERSE
0.5 3.220 1.902 1.216 0.973 0.844 0.763 0.706 0.663 0.630 0.603
1.0 6.439 3.803 2.432 1.946 1.688 1.526 1.412 1.327 1.260 1.207
2.0 12.878 7.606 4.864 3.892 3.377 3.051 2.823 2.653 2.521 2.414
4.0 25.756 15.213 9.729 7.783 6.753 6.102 5.647 5.307 5.041 4.827
6.0 38.634 22.819 14.593 11.675 10.130 9.153 8.470 7.960 7.562 7.241
8.0 51.512 30.426 19.458 15.567 13.507 12.204 11.294 10.614 10.083 9.654
10.0 64.390 38.032 24.322 19.458 16.883 15.255 14.117 13.267 12.604 12.068

5-74 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

IEC CURVES
For European applications, the relay offers three standard curves defined in IEC 255-4 and British standard BS142. These
are defined as IEC Curve A, IEC Curve B, and IEC Curve C. The formulae for these curves are:
K tr
--------------------------------------- --------------------------------------
-
T = TDM × ( I ⁄ I pickup ) E – 1 , T RESET = TDM × ( I ⁄ I 2 (EQ 5.5)
pickup ) – 1

where: T = operate time (in seconds), TDM = Multiplier setting, I = input current, Ipickup = Pickup Current setting, K, E =
constants, tr = characteristic constant, and TRESET = reset time in seconds (assuming energy capacity is 100%
and RESET is “Timed”)

Table 5–12: IEC (BS) INVERSE TIME CURVE CONSTANTS

IEC (BS) CURVE SHAPE K E TR
IEC Curve A (BS142) 0.140 0.020 9.7
IEC Curve B (BS142) 13.500 1.000 43.2
IEC Curve C (BS142) 80.000 2.000 58.2
IEC Short Inverse 0.050 0.040 0.500

Table 5–13: IEC CURVE TRIP TIMES (IN SECONDS)

MULTIPLIER CURRENT ( I / Ipickup)
(TDM)
1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
IEC CURVE A
0.05 0.860 0.501 0.315 0.249 0.214 0.192 0.176 0.165 0.156 0.149
0.10
0.20
1.719
3.439
1.003
2.006
0.630
1.260
0.498
0.996
0.428
0.856
0.384
0.767
0.353
0.706
0.330
0.659
0.312
0.623
0.297
0.594
5
0.40 6.878 4.012 2.521 1.992 1.712 1.535 1.411 1.319 1.247 1.188
0.60 10.317 6.017 3.781 2.988 2.568 2.302 2.117 1.978 1.870 1.782
0.80 13.755 8.023 5.042 3.984 3.424 3.070 2.822 2.637 2.493 2.376
1.00 17.194 10.029 6.302 4.980 4.280 3.837 3.528 3.297 3.116 2.971
IEC CURVE B
0.05 1.350 0.675 0.338 0.225 0.169 0.135 0.113 0.096 0.084 0.075
0.10 2.700 1.350 0.675 0.450 0.338 0.270 0.225 0.193 0.169 0.150
0.20 5.400 2.700 1.350 0.900 0.675 0.540 0.450 0.386 0.338 0.300
0.40 10.800 5.400 2.700 1.800 1.350 1.080 0.900 0.771 0.675 0.600
0.60 16.200 8.100 4.050 2.700 2.025 1.620 1.350 1.157 1.013 0.900
0.80 21.600 10.800 5.400 3.600 2.700 2.160 1.800 1.543 1.350 1.200
1.00 27.000 13.500 6.750 4.500 3.375 2.700 2.250 1.929 1.688 1.500
IEC CURVE C
0.05 3.200 1.333 0.500 0.267 0.167 0.114 0.083 0.063 0.050 0.040
0.10 6.400 2.667 1.000 0.533 0.333 0.229 0.167 0.127 0.100 0.081
0.20 12.800 5.333 2.000 1.067 0.667 0.457 0.333 0.254 0.200 0.162
0.40 25.600 10.667 4.000 2.133 1.333 0.914 0.667 0.508 0.400 0.323
0.60 38.400 16.000 6.000 3.200 2.000 1.371 1.000 0.762 0.600 0.485
0.80 51.200 21.333 8.000 4.267 2.667 1.829 1.333 1.016 0.800 0.646
1.00 64.000 26.667 10.000 5.333 3.333 2.286 1.667 1.270 1.000 0.808
IEC SHORT TIME
0.05 0.153 0.089 0.056 0.044 0.038 0.034 0.031 0.029 0.027 0.026
0.10 0.306 0.178 0.111 0.088 0.075 0.067 0.062 0.058 0.054 0.052
0.20 0.612 0.356 0.223 0.175 0.150 0.135 0.124 0.115 0.109 0.104
0.40 1.223 0.711 0.445 0.351 0.301 0.269 0.247 0.231 0.218 0.207
0.60 1.835 1.067 0.668 0.526 0.451 0.404 0.371 0.346 0.327 0.311
0.80 2.446 1.423 0.890 0.702 0.602 0.538 0.494 0.461 0.435 0.415
1.00 3.058 1.778 1.113 0.877 0.752 0.673 0.618 0.576 0.544 0.518

GE Multilin B30 Bus Differential Relay 5-75

 5.5 GROUPED ELEMENTS 5 SETTINGS

IAC CURVES:
The curves for the General Electric type IAC relay family are derived from the formulae:

⎛ B D E ⎞ tr
T = TDM × ⎜ A + ------------------------------ + -------------------------------------2- + -------------------------------------3-⎟ , T RESET = TDM × -------------------------------
- (EQ 5.6)
⎝ ( I ⁄ I pkp ) – C ( ( I ⁄ I ) – C ) ( ( I ⁄ I ) – C ) ⎠ 2
pkp pkp ( I ⁄ I pkp ) – 1

where: T = operate time (in seconds), TDM = Multiplier setting, I = Input current, Ipkp = Pickup Current setting, A to E =
constants, tr = characteristic constant, and TRESET = reset time in seconds (assuming energy capacity is 100%
and RESET is “Timed”)

Table 5–14: GE TYPE IAC INVERSE TIME CURVE CONSTANTS

IAC CURVE SHAPE A B C D E TR
IAC Extreme Inverse 0.0040 0.6379 0.6200 1.7872 0.2461 6.008
IAC Very Inverse 0.0900 0.7955 0.1000 –1.2885 7.9586 4.678
IAC Inverse 0.2078 0.8630 0.8000 –0.4180 0.1947 0.990
IAC Short Inverse 0.0428 0.0609 0.6200 –0.0010 0.0221 0.222

Table 5–15: IAC CURVE TRIP TIMES

MULTIPLIER CURRENT ( I / Ipickup)
(TDM)
1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
IAC EXTREMELY INVERSE
0.5 1.699 0.749 0.303 0.178 0.123 0.093 0.074 0.062 0.053 0.046

5 1.0
2.0
3.398
6.796
1.498
2.997
0.606
1.212
0.356
0.711
0.246
0.491
0.186
0.372
0.149
0.298
0.124
0.248
0.106
0.212
0.093
0.185
4.0 13.591 5.993 2.423 1.422 0.983 0.744 0.595 0.495 0.424 0.370
6.0 20.387 8.990 3.635 2.133 1.474 1.115 0.893 0.743 0.636 0.556
8.0 27.183 11.987 4.846 2.844 1.966 1.487 1.191 0.991 0.848 0.741
10.0 33.979 14.983 6.058 3.555 2.457 1.859 1.488 1.239 1.060 0.926
IAC VERY INVERSE
0.5 1.451 0.656 0.269 0.172 0.133 0.113 0.101 0.093 0.087 0.083
1.0 2.901 1.312 0.537 0.343 0.266 0.227 0.202 0.186 0.174 0.165
2.0 5.802 2.624 1.075 0.687 0.533 0.453 0.405 0.372 0.349 0.331
4.0 11.605 5.248 2.150 1.374 1.065 0.906 0.810 0.745 0.698 0.662
6.0 17.407 7.872 3.225 2.061 1.598 1.359 1.215 1.117 1.046 0.992
8.0 23.209 10.497 4.299 2.747 2.131 1.813 1.620 1.490 1.395 1.323
10.0 29.012 13.121 5.374 3.434 2.663 2.266 2.025 1.862 1.744 1.654
IAC INVERSE
0.5 0.578 0.375 0.266 0.221 0.196 0.180 0.168 0.160 0.154 0.148
1.0 1.155 0.749 0.532 0.443 0.392 0.360 0.337 0.320 0.307 0.297
2.0 2.310 1.499 1.064 0.885 0.784 0.719 0.674 0.640 0.614 0.594
4.0 4.621 2.997 2.128 1.770 1.569 1.439 1.348 1.280 1.229 1.188
6.0 6.931 4.496 3.192 2.656 2.353 2.158 2.022 1.921 1.843 1.781
8.0 9.242 5.995 4.256 3.541 3.138 2.878 2.695 2.561 2.457 2.375
10.0 11.552 7.494 5.320 4.426 3.922 3.597 3.369 3.201 3.072 2.969
IAC SHORT INVERSE
0.5 0.072 0.047 0.035 0.031 0.028 0.027 0.026 0.026 0.025 0.025
1.0 0.143 0.095 0.070 0.061 0.057 0.054 0.052 0.051 0.050 0.049
2.0 0.286 0.190 0.140 0.123 0.114 0.108 0.105 0.102 0.100 0.099
4.0 0.573 0.379 0.279 0.245 0.228 0.217 0.210 0.204 0.200 0.197
6.0 0.859 0.569 0.419 0.368 0.341 0.325 0.314 0.307 0.301 0.296
8.0 1.145 0.759 0.559 0.490 0.455 0.434 0.419 0.409 0.401 0.394
10.0 1.431 0.948 0.699 0.613 0.569 0.542 0.524 0.511 0.501 0.493

5-76 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

I2t CURVES:
The curves for the I2t are derived from the formulae:

100 100
-------------------------- ----------------------------
I ⎞ 2 , T RESET = TDM × ⎛ I ⎞ – 2
T = TDM × ⎛ --------------- (EQ 5.7)
- ----------------
⎝ I pickup ⎠ ⎝ I pickup ⎠

where: T = Operate Time (sec.); TDM = Multiplier Setting; I = Input Current; Ipickup = Pickup Current Setting;
TRESET = Reset Time in sec. (assuming energy capacity is 100% and RESET: Timed)

Table 5–16: I2T CURVE TRIP TIMES

MULTIPLIER CURRENT ( I / Ipickup)
(TDM)
1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
0.01 0.44 0.25 0.11 0.06 0.04 0.03 0.02 0.02 0.01 0.01
0.10 4.44 2.50 1.11 0.63 0.40 0.28 0.20 0.16 0.12 0.10
1.00 44.44 25.00 11.11 6.25 4.00 2.78 2.04 1.56 1.23 1.00
10.00 444.44 250.00 111.11 62.50 40.00 27.78 20.41 15.63 12.35 10.00
100.00 4444.4 2500.0 1111.1 625.00 400.00 277.78 204.08 156.25 123.46 100.00
600.00 26666.7 15000.0 6666.7 3750.0 2400.0 1666.7 1224.5 937.50 740.74 600.00

FLEXCURVES™:
The custom FlexCurves™ are described in detail in the FlexCurves™ section of this chapter. The curve shapes for the
FlexCurves™ are derived from the formulae:

I
T = TDM × FlexCurve Time at ⎛⎝ ----------------⎞⎠
I
when ⎛⎝ ----------------⎞⎠ ≥ 1.00 (EQ 5.8)
5
I pickup I pickup

I I
T RESET = TDM × FlexCurve Time at ⎛⎝ ----------------⎞⎠ when ⎛⎝ ----------------⎞⎠ ≤ 0.98 (EQ 5.9)
I pickup I pickup

where: T = Operate Time (sec.), TDM = Multiplier setting

I = Input Current, Ipickup = Pickup Current setting
TRESET = Reset Time in seconds (assuming energy capacity is 100% and RESET: Timed)
DEFINITE TIME CURVE:
The Definite Time curve shape operates as soon as the pickup level is exceeded for a specified period of time. The base
definite time curve delay is in seconds. The curve multiplier of 0.00 to 600.00 makes this delay adjustable from instanta-
neous to 600.00 seconds in steps of 10 ms.
T = TDM in seconds, when I > I pickup (EQ 5.10)

T RESET = – TDM in seconds (EQ 5.11)

where: T = Operate Time (sec.), TDM = Multiplier setting

I = Input Current, Ipickup = Pickup Current setting
TRESET = Reset Time in seconds (assuming energy capacity is 100% and RESET: Timed)
RECLOSER CURVES:
The B30 uses the FlexCurve™ feature to facilitate programming of 41 recloser curves. Please refer to the FlexCurve™ sec-
tion in this chapter for additional details.

GE Multilin B30 Bus Differential Relay 5-77

 5.5 GROUPED ELEMENTS 5 SETTINGS

c) PHASE TIME OVERCURRENT (ANSI 51P)

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) PHASE CURRENT PHASE TOC1(6)

PHASE TOC1 PHASE TOC1 Range: Disabled, Enabled

FUNCTION: Disabled
PHASE TOC1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SOURCE: SRC 1
PHASE TOC1 Range: Phasor, RMS
MESSAGE
INPUT: Phasor
PHASE TOC1 Range: 0.000 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.000 pu
PHASE TOC1 Range: See Overcurrent Curve Types table
MESSAGE
CURVE: IEEE Mod Inv
PHASE TOC1 Range: 0.00 to 600.00 in steps of 0.01
MESSAGE
TD MULTIPLIER: 1.00
PHASE TOC1 Range: Instantaneous, Timed
MESSAGE
RESET: Instantaneous
PHASE TOC1 VOLTAGE Range: Disabled, Enabled
MESSAGE
RESTRAINT: Disabled
PHASE TOC1 BLOCK A: Range: FlexLogic™ operand
MESSAGE

5
Off
PHASE TOC1 BLOCK B: Range: FlexLogic™ operand
MESSAGE
Off
PHASE TOC1 BLOCK C: Range: FlexLogic™ operand
MESSAGE
Off
PHASE TOC1 Range: Self-reset, Latched, Disabled
MESSAGE
TARGET: Self-reset
PHASE TOC1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

The phase time overcurrent element can provide a desired time-delay operating characteristic versus the applied current or
be used as a simple Definite Time element. The phase current input quantities may be programmed as fundamental phasor
magnitude or total waveform RMS magnitude as required by the application.
Two methods of resetting operation are available: “Timed” and “Instantaneous” (refer to the Inverse TOC Curves Character-
istic sub-section earlier for details on curve setup, trip times and reset operation). When the element is blocked, the time
accumulator will reset according to the reset characteristic. For example, if the element reset characteristic is set to “Instan-
taneous” and the element is blocked, the time accumulator will be cleared immediately.
The PHASE TOC1 PICKUP setting can be dynamically reduced by a voltage restraint feature (when enabled). This is accom-
plished via the multipliers (Mvr) corresponding to the phase-phase voltages of the voltage restraint characteristic curve (see
the figure below); the pickup level is calculated as ‘Mvr’ times the PHASE TOC1 PICKUP setting. If the voltage restraint feature
is disabled, the pickup level always remains at the setting value.

5-78 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

Multiplier for Pickup Current

1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Phase-Phase Voltage ÷ VT Nominal Phase-phase Voltage
818784A4.CDR

Figure 5–38: PHASE TOC VOLTAGE RESTRAINT CHARACTERISTIC

SETTING
PHASE TOC1
FUNCTION:
Disabled=0
Enabled=1

SETTING
PHASE TOC1
BLOCK-A :
Off=0

SETTING
PHASE TOC1
BLOCK-B:
5
Off=0
SETTING
SETTING
PHASE TOC1
PHASE TOC1 INPUT:
BLOCK-C:
PHASE TOC1
Off=0 PICKUP:
PHASE TOC1
SETTING CURVE:
PHASE TOC1 PHASE TOC1
SOURCE: TD MULTIPLIER:
IA
PHASE TOC1
IB RESET: FLEXLOGIC OPERAND
IC AND RUN PHASE TOC1 A PKP
IA PICKUP
Seq=ABC Seq=ACB PHASE TOC1 A DPO
MULTIPLY INPUTS
RUN
t PHASE TOC1 A OP
VAB VAC Set
Calculate Multiplier Set Pickup AND RUN PHASE TOC1 B PKP
RUN
Multiplier-Phase A IB PICKUP
Set PHASE TOC1 B DPO
VBC VBA Set Pickup
Calculate Multiplier t PHASE TOC1 B OP
RUN
Multiplier-Phase B
Set AND RUN PHASE TOC1 C PKP
VCA VCB IC PICKUP
Calculate Multiplier Set Pickup PHASE TOC1 C DPO
Multiplier-Phase C
t PHASE TOC1 C OP
SETTING OR PHASE TOC1 PKP
PHASE TOC1 VOLT
RESTRAINT: OR PHASE TOC1 OP
Enabled

AND PHASE TOC1 DPO

827072A4.CDR

Figure 5–39: PHASE TOC1 SCHEME LOGIC

GE Multilin B30 Bus Differential Relay 5-79

 5.5 GROUPED ELEMENTS 5 SETTINGS

d) PHASE INSTANTANEOUS OVERCURRENT (ANSI 50P)

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) PHASE CURRENT PHASE IOC 1(2)

PHASE IOC1 PHASE IOC1 Range: Disabled, Enabled

FUNCTION: Disabled
PHASE IOC1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SOURCE: SRC 1
PHASE IOC1 Range: 0.000 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.000 pu
PHASE IOC1 PICKUP Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 0.00 s
PHASE IOC1 RESET Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 0.00 s
PHASE IOC1 BLOCK A: Range: FlexLogic™ operand
MESSAGE
Off
PHASE IOC1 BLOCK B: Range: FlexLogic™ operand
MESSAGE
Off
PHASE IOC1 BLOCK C: Range: FlexLogic™ operand
MESSAGE
Off
PHASE IOC1 Range: Self-reset, Latched, Disabled
MESSAGE

5
TARGET: Self-reset
PHASE IOC1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled
Two instantaneous overcurrent elements facilitate applications including an external check zone function. For bus configu-
rations of up to 5 feeders, each with a second set of CTs, a check zone can be implemented by externally summing cur-
rents from the independent sets of CTs and connecting the resulting differential current to the sixth current input. In this
case, one element monitors the independently formed differential current and supervises the differential protection.
If applied, the overcurrent function responding to the independently formed differential signal should be used to supervise
the output from the main differential protection with a FlexLogic™ AND gate before driving the output contact. It is not rec-
ommended to use the drop-out operand of the overcurrent function as the block input to the Differential element. The differ-
ential element includes the saturation detector that responds to specific time relationships between the differential and
restraining currents, and therefore, it must be operational all the time in order to function properly.
The phase instantaneous overcurrent element may be used as an instantaneous element with no intentional delay or as a
Definite Time element. The input current is the fundamental phasor magnitude.
SETTING SETTING SETTINGS FLEXLOGIC
PHASE IOC1 PHASE IOC1 PHASE IOC1 OPERANDS
FUNCTION: PICKUP: PICKUPDELAY: PHASE IOC1 A PKP
Enabled = 1 AND RUN PHASE IOC1 RESET
Disabled = 0 DELAY: PHASE IOC1 A DPO
IA ≥ PICKUP tPKP
SETTING tRST PHASE IOC1 B PKP
AND RUN
PHASE IOC1 PHASE IOC1 B DPO
SOURCE: tPKP
IB ≥ PICKUP
IA tRST PHASE IOC1 C PKP
AND RUN
IB
tPKP PHASE IOC1 C DPO
IC
IC ≥ PICKUP tRST
PHASE IOC1 A OP

SETTING PHASE IOC1 B OP

PHASE IOC1
BLOCK-A: PHASE IOC1 C OP
Off = 0
OR PHASE IOC1 PKP

SETTING OR PHASE IOC1 OP

PHASE IOC1
BLOCK-B:
AND PHASE IOC1 DPO
Off = 0

SETTING
827033A6.VSD
PHASE IOC1
BLOCK-C:
Off = 0

Figure 5–40: PHASE IOC1 SCHEME LOGIC

5-80 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

5.5.5 NEUTRAL CURRENT

a) NEUTRAL TIME OVERCURRENT (ANSI 51N)

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) NEUTRAL CURRENT NEUTRAL TOC1

NEUTRAL TOC1 NEUTRAL TOC1 Range: Disabled, Enabled

FUNCTION: Disabled
NEUTRAL TOC1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SOURCE: SRC 1
NEUTRAL TOC1 Range: Phasor, RMS
MESSAGE
INPUT: Phasor
NEUTRAL TOC1 Range: 0.000 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.000 pu
NEUTRAL TOC1 Range: See OVERCURRENT CURVE TYPES table
MESSAGE
CURVE: IEEE Mod Inv
NEUTRAL TOC1 Range: 0.00 to 600.00 in steps of 0.01
MESSAGE
TD MULTIPLIER: 1.00
NEUTRAL TOC1 Range: Instantaneous, Timed
MESSAGE
RESET: Instantaneous
NEUTRAL TOC1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off

MESSAGE
NEUTRAL TOC1 Range: Self-reset, Latched, Disabled
5
TARGET: Self-reset
NEUTRAL TOC1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

The Neutral Time Overcurrent element can provide a desired time-delay operating characteristic versus the applied current
or be used as a simple Definite Time element. The neutral current input value is a quantity calculated as 3Io from the phase
currents and may be programmed as fundamental phasor magnitude or total waveform RMS magnitude as required by the
application.
Two methods of resetting operation are available: “Timed” and “Instantaneous” (refer to the Inverse TOC Curve Character-
istics section for details on curve setup, trip times and reset operation). When the element is blocked, the time accumulator
will reset according to the reset characteristic. For example, if the element reset characteristic is set to “Instantaneous” and
the element is blocked, the time accumulator will be cleared immediately.

SETTINGS
NEUTRAL TOC1
SETTING INPUT:
NEUTRAL TOC1 NEUTRAL TOC1
FUNCTION: PICKUP:
Disabled = 0 NEUTRAL TOC1
Enabled = 1 CURVE:
NEUTRAL TOC1
TD MULTIPLIER:
NEUTRAL TOC 1 FLEXLOGIC OPERANDS
SETTING
RESET: NEUTRAL TOC1 PKP
NEUTRAL TOC1
AND RUN IN ≥ PICKUP NEUTRAL TOC1 DPO
SOURCE:
NEUTRAL TOC1 OP
IN t
I
SETTING
NEUTRAL TOC1
BLOCK:
Off = 0 827034A3.VSD

Figure 5–41: NEUTRAL TOC1 SCHEME LOGIC

GE Multilin B30 Bus Differential Relay 5-81

 5.5 GROUPED ELEMENTS 5 SETTINGS

b) NEUTRAL INSTANTANEOUS OVERCURRENT (ANSI 50N)

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) NEUTRAL CURRENT NEUTRAL IOC1(6)

NEUTRAL IOC1 NEUTRAL IOC1 Range: Disabled, Enabled

FUNCTION: Disabled
NEUTRAL IOC1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SOURCE: SRC 1
NEUTRAL IOC1 Range: 0.000 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.000 pu
NEUTRAL IOC1 PICKUP Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 0.00 s
NEUTRAL IOC1 RESET Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 0.00 s
NEUTRAL IOC1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off
NEUTRAL IOC1 Range: Self-reset, Latched, Disabled
MESSAGE
TARGET: Self-reset
NEUTRAL IOC1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

The Neutral Instantaneous Overcurrent element may be used as an instantaneous function with no intentional delay or as a

5 Definite Time function. The element essentially responds to the magnitude of a neutral current fundamental frequency pha-
sor calculated from the phase currents. A “positive-sequence restraint” is applied for better performance. A small portion
(6.25%) of the positive-sequence current magnitude is subtracted from the zero-sequence current magnitude when forming
the operating quantity of the element as follows:
I op = 3 × ( I_0 – K ⋅ I_1 ) where K = 1 ⁄ 16 (EQ 5.12)

The positive-sequence restraint allows for more sensitive settings by counterbalancing spurious zero-sequence currents
resulting from:
• system unbalances under heavy load conditions
• transformation errors of current transformers (CTs) during double-line and three-phase faults
• switch-off transients during double-line and three-phase faults
The positive-sequence restraint must be considered when testing for pickup accuracy and response time (multiple of
pickup). The operating quantity depends on how test currents are injected into the relay (single-phase injection:
I op = 0.9375 ⋅ I injected ; three-phase pure zero-sequence injection: I op = 3 × I injected ).

SETTING

NEUTRAL IOC1 FUNCTION: SETTINGS

Disabled=0 NEUTRAL IOC1

SETTING PICKUP DELAY :
Enabled=1 FLEXLOGIC OPERANDS
NEUTRAL IOC1
NEUTRAL IOC1 PICKUP: NEUTRAL IOC1 PKP
RESET DELAY :
SETTING NEUTRAL IOC1 DPO
AND RUN tPKP
tRST NEUTRAL IOC1 OP
NEUTRAL IOC1 BLOCK: 3( I_0 - K I_1 ) PICKUP

Off=0

SETTING

NEUTRAL IOC1 SOURCE:

827035A4.CDR
I_0

Figure 5–42: NEUTRAL IOC1 SCHEME LOGIC

5-82 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

5.5.6 GROUND CURRENT

a) GROUND TIME OVERCURRENT (ANSI 51G)

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) GROUND CURRENT GROUND TOC1(6)

GROUND TOC1 GROUND TOC1 Range: Disabled, Enabled

FUNCTION: Disabled
GROUND TOC1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SOURCE: SRC 1
GROUND TOC1 Range: Phasor, RMS
MESSAGE
INPUT: Phasor
GROUND TOC1 Range: 0.000 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.000 pu
GROUND TOC1 Range: see the Overcurrent Curve Types table
MESSAGE
CURVE: IEEE Mod Inv
GROUND TOC1 Range: 0.00 to 600.00 in steps of 0.01
MESSAGE
TD MULTIPLIER: 1.00
GROUND TOC1 Range: Instantaneous, Timed
MESSAGE
RESET: Instantaneous
GROUND TOC1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off

MESSAGE
GROUND TOC1 Range: Self-reset, Latched, Disabled
5
TARGET: Self-reset
GROUND TOC1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

This element can provide a desired time-delay operating characteristic versus the applied current or be used as a simple
Definite Time element. The ground current input value is the quantity measured by the ground input CT and is the funda-
mental phasor or RMS magnitude. Two methods of resetting operation are available; “Timed” and “Instantaneous” (refer to
the Inverse Time Overcurrent Curve Characteristics section for details). When the element is blocked, the time accumulator
will reset according to the reset characteristic. For example, if the element reset characteristic is set to “Instantaneous” and
the element is blocked, the time accumulator will be cleared immediately.
These elements measure the current that is connected to the ground channel of a CT/VT module. This channel
may be equipped with a standard or sensitive input. The conversion range of a standard channel is from 0.02 to 46
NOTE
times the CT rating. The conversion range of a sensitive channel is from 0.002 to 4.6 times the CT rating.

SETTINGS
GROUND TOC1
SETTING INPUT:
GROUND TOC1 GROUND TOC1
FUNCTION: PICKUP:
Disabled = 0 GROUND TOC1
Enabled = 1 CURVE:
GROUND TOC1
TD MULTIPLIER:
GROUND TOC 1 FLEXLOGIC OPERANDS
SETTING
RESET: GROUND TOC1 PKP
GROUND TOC1
AND RUN IG ≥ PICKUP GROUND TOC1 DPO
SOURCE:
GROUND TOC1 OP
IG t
I
SETTING
GROUND TOC1
BLOCK:
827036A3.VSD
Off = 0

Figure 5–43: GROUND TOC1 SCHEME LOGIC

GE Multilin B30 Bus Differential Relay 5-83

 5.5 GROUPED ELEMENTS 5 SETTINGS

b) GROUND INSTANTANEOUS OVERCURRENT (ANSI 50G)

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) GROUND CURRENT GROUND IOC1(6)

GROUND IOC1 GROUND IOC1 Range: Disabled, Enabled

FUNCTION: Disabled
GROUND IOC1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SOURCE: SRC 1
GROUND IOC1 Range: 0.000 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.000 pu
GROUND IOC1 PICKUP Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 0.00 s
GROUND IOC1 RESET Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 0.00 s
GROUND IOC1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off
GROUND IOC1 Range: Self-reset, Latched, Disabled
MESSAGE
TARGET: Self-reset
GROUND IOC1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

The Ground Instantaneous Overcurrent element may be used as an instantaneous element with no intentional delay or as

5 a Definite Time element. The ground current input is the quantity measured by the ground input CT and is the fundamental
phasor magnitude.

FLEXLOGIC OPERANDS
SETTING GROUND IOC1 PKP
GROUND IOC1
GROUND IOIC DPO
FUNCTION:
Disabled = 0 SETTINGS GROUND IOC1 OP

Enabled = 1 GROUND IOC1 PICKUP

SETTING DELAY:
GROUND IOC1 GROUND IOC1 RESET
SETTING
PICKUP: DELAY:
GROUND IOC1
AND RUN tPKP
SOURCE:
IG
IG ≥ PICKUP tRST
SETTING
GROUND IOC1
BLOCK:
827037A4.VSD
Off = 0

Figure 5–44: GROUND IOC1 SCHEME LOGIC

These elements measure the current that is connected to the ground channel of a CT/VT module. This channel
may be equipped with a standard or sensitive input. The conversion range of a standard channel is from 0.02 to 46
NOTE
times the CT rating. The conversion range of a sensitive channel is from 0.002 to 4.6 times the CT rating.

5-84 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

5.5.7 BREAKER FAILURE

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) BREAKER FAILURE BREAKER FAILURE 1(6)

BREAKER FAILURE 1 BF1 FUNCTION: Range: Disabled, Enabled

Disabled

BF1 MODE: Range: 3-Pole, 1-Pole

MESSAGE
3-Pole

BF1 SOURCE: Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6

MESSAGE
SRC 1
BF1 USE AMP SUPV: Range: Yes, No
MESSAGE
Yes
BF1 USE SEAL-IN: Range: Yes, No
MESSAGE
Yes
BF1 3-POLE INITIATE: Range: FlexLogic™ operand
MESSAGE
Off
BF1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off
BF1 PH AMP SUPV Range: 0.001 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.050 pu
BF1 N AMP SUPV Range: 0.001 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.050 pu 5
BF1 USE TIMER 1: Range: Yes, No
MESSAGE
Yes
BF1 TIMER 1 PICKUP Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
DELAY: 0.000 s
BF1 USE TIMER 2: Range: Yes, No
MESSAGE
Yes
BF1 TIMER 2 PICKUP Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
DELAY: 0.000 s
BF1 USE TIMER 3: Range: Yes, No
MESSAGE
Yes
BF1 TIMER 3 PICKUP Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
DELAY: 0.000 s
BF1 BKR POS1 φA/3P: Range: FlexLogic™ operand
MESSAGE
Off
BF1 BKR POS2 φA/3P: Range: FlexLogic™ operand
MESSAGE
Off
BF1 BREAKER TEST ON: Range: FlexLogic™ operand
MESSAGE
Off
BF1 PH AMP HISET Range: 0.001 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.050 pu
BF1 N AMP HISET Range: 0.001 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.050 pu
BF1 PH AMP LOSET Range: 0.001 to 30.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.050 pu

GE Multilin B30 Bus Differential Relay 5-85

 5.5 GROUPED ELEMENTS 5 SETTINGS

BF1 N AMP LOSET Range: 0.001 to 30.000 pu in steps of 0.001

MESSAGE
PICKUP: 1.050 pu
BF1 LOSET TIME Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
DELAY: 0.000 s
BF1 TRIP DROPOUT Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
DELAY: 0.000 s
BF1 TARGET Range: Self-reset, Latched, Disabled
MESSAGE
Self-Reset
BF1 EVENTS Range: Disabled, Enabled
MESSAGE
Disabled
BF1 PH A INITIATE: Range: FlexLogic™ operand
MESSAGE Valid only for 1-Pole breaker failure schemes.
Off
BF1 PH B INITIATE: Range: FlexLogic™ operand
MESSAGE Valid only for 1-Pole breaker failure schemes.
Off
BF1 PH C INITIATE: Range: FlexLogic™ operand
MESSAGE Valid only for 1-Pole breaker failure schemes.
Off
BF1 BKR POS1 φB Range: FlexLogic™ operand
MESSAGE Valid only for 1-Pole breaker failure schemes.
Off
BF1 BKR POS1 φC Range: FlexLogic™ operand
MESSAGE Valid only for 1-Pole breaker failure schemes.
Off
5 MESSAGE
BF1 BKR POS2 φB Range: FlexLogic™ operand
Off Valid only for 1-Pole breaker failure schemes.

BF1 BKR POS2 φC Range: FlexLogic™ operand

MESSAGE Valid only for 1-Pole breaker failure schemes.
Off

There are 2 identical Breaker Failure menus available, numbered 1 and 2.

In general, a breaker failure scheme determines that a breaker signaled to trip has not cleared a fault within a definite time,
so further tripping action must be performed. Tripping from the breaker failure scheme should trip all breakers, both local
and remote, that can supply current to the faulted zone. Usually operation of a breaker failure element will cause clearing of
a larger section of the power system than the initial trip. Because breaker failure can result in tripping a large number of
breakers and this affects system safety and stability, a very high level of security is required.
Two schemes are provided: one for three-pole tripping only (identified by the name "3BF") and one for three pole plus sin-
gle-pole operation (identified by the name "1BF"). The philosophy used in these schemes is identical. The operation of a
breaker failure element includes three stages: initiation, determination of a breaker failure condition, and output.
INITIATION STAGE:
A FlexLogic™ operand representing the protection trip signal initially sent to the breaker must be selected to initiate the
scheme. The initiating signal should be sealed-in if primary fault detection can reset before the breaker failure timers have
finished timing. The seal-in is supervised by current level, so it is reset when the fault is cleared. If desired, an incomplete
sequence seal-in reset can be implemented by using the initiating operand to also initiate a FlexLogic™ timer, set longer
than any breaker failure timer, whose output operand is selected to block the breaker failure scheme.
Schemes can be initiated either directly or with current level supervision. It is particularly important in any application to
decide if a current-supervised initiate is to be used. The use of a current-supervised initiate results in the breaker failure ele-
ment not being initiated for a breaker that has very little or no current flowing through it, which may be the case for trans-
former faults. For those situations where it is required to maintain breaker fail coverage for fault levels below the BF1 PH
AMP SUPV PICKUP or the BF1 N AMP SUPV PICKUP setting, a current supervised initiate should not be used. This feature
should be utilized for those situations where coordinating margins may be reduced when high speed reclosing is used.
Thus, if this choice is made, fault levels must always be above the supervision pickup levels for dependable operation of
the breaker fail scheme. This can also occur in breaker-and-a-half or ring bus configurations where the first breaker closes
into a fault; the protection trips and attempts to initiate breaker failure for the second breaker, which is in the process of
closing, but does not yet have current flowing through it.

5-86 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

When the scheme is initiated, it immediately sends a trip signal to the breaker initially signaled to trip (this feature is usually
described as Re-Trip). This reduces the possibility of widespread tripping that results from a declaration of a failed breaker.
DETERMINATION OF A BREAKER FAILURE CONDITION:
The schemes determine a breaker failure condition via three ‘paths’. Each of these paths is equipped with a time delay,
after which a failed breaker is declared and trip signals are sent to all breakers required to clear the zone. The delayed
paths are associated with Breaker Failure Timers 1, 2, and 3, which are intended to have delays increasing with increasing
timer numbers. These delayed paths are individually enabled to allow for maximum flexibility.
Timer 1 logic (Early Path) is supervised by a fast-operating breaker auxiliary contact. If the breaker is still closed (as indi-
cated by the auxiliary contact) and fault current is detected after the delay interval, an output is issued. Operation of the
breaker auxiliary switch indicates that the breaker has mechanically operated. The continued presence of current indicates
that the breaker has failed to interrupt the circuit.
Timer 2 logic (Main Path) is not supervised by a breaker auxiliary contact. If fault current is detected after the delay interval,
an output is issued. This path is intended to detect a breaker that opens mechanically but fails to interrupt fault current; the
logic therefore does not use a breaker auxiliary contact.
The Timer 1 and 2 paths provide two levels of current supervision, Hi-set and Lo-set, that allow the supervision level to
change from a current which flows before a breaker inserts an opening resistor into the faulted circuit to a lower level after
resistor insertion. The Hi-set detector is enabled after timeout of Timer 1 or 2, along with a timer that will enable the Lo-set
detector after its delay interval. The delay interval between Hi-set and Lo-set is the expected breaker opening time. Both
current detectors provide a fast operating time for currents at small multiples of the pickup value. The overcurrent detectors
are required to operate after the breaker failure delay interval to eliminate the need for very fast resetting overcurrent detec-
tors.
Timer 3 logic (Slow Path) is supervised by a breaker auxiliary contact and a control switch contact used to indicate that the
breaker is in/out of service, disabling this path when the breaker is out of service for maintenance. There is no current level
check in this logic as it is intended to detect low magnitude faults and it is therefore the slowest to operate. 5
OUTPUT:
The outputs from the schemes are:
• FlexLogic™ operands that report on the operation of portions of the scheme
• FlexLogic™ operand used to re-trip the protected breaker
• FlexLogic™ operands that initiate tripping required to clear the faulted zone. The trip output can be sealed-in for an
adjustable period.
• Target message indicating a failed breaker has been declared
• Illumination of the faceplate Trip LED (and the Phase A, B or C LED, if applicable)
MAIN PATH SEQUENCE:

ACTUAL CURRENT MAGNITUDE

FAILED INTERRUPTION
0
AMP CALCULATED CURRENT MAGNITUDE
CORRECT INTERRUPTION
Rampdown
0
PROTECTION OPERATION BREAKER INTERRUPTING TIME
(ASSUMED 1.5 cycles) (ASSUMED 3 cycles)
MARGIN BACKUP BREAKER OPERATING TIME
(Assumed 2 Cycles) (Assumed 3 Cycles)

BREAKER FAILURE TIMER No. 2 (±1/8 cycle)

INITIATE (1/8 cycle)

BREAKER FAILURE CURRENT DETECTOR PICKUP (1/8 cycle)

BREAKER FAILURE OUTPUT RELAY PICKUP (1/4 cycle)

FAULT cycles
OCCURS
0 1 2 3 4 5 6 7 8 9 10 11

827083A6.CDR

Figure 5–45: BREAKER FAILURE MAIN PATH SEQUENCE

GE Multilin B30 Bus Differential Relay 5-87

 5.5 GROUPED ELEMENTS 5 SETTINGS

The current supervision elements reset in less than 0.7 of a power cycle up to the multiple of pickup of 100 (threshold set at
0.01 of the actual fault current) as shown below.

Breaker failure reset time (cycles)

Multiple of pickup (fault current / threshold setting)

Figure 5–46: BREAKER FAILURE OVERCURRENT SUPERVISION RESET TIME
SETTINGS:

5 •
•
BF1 MODE: This setting is used to select the breaker failure operating mode: single or three pole.
BF1 USE AMP SUPV: If set to "Yes", the element will only be initiated if current flowing through the breaker is above
the supervision pickup level.
• BF1 USE SEAL-IN: If set to "Yes", the element will only be sealed-in if current flowing through the breaker is above the
supervision pickup level.
• BF1 3-POLE INITIATE: This setting selects the FlexLogic™ operand that will initiate 3-pole tripping of the breaker.
• BF1 PH AMP SUPV PICKUP: This setting is used to set the phase current initiation and seal-in supervision level.
Generally this setting should detect the lowest expected fault current on the protected breaker. It can be set as low as
necessary (lower than breaker resistor current or lower than load current) - Hiset and Loset current supervision will
guarantee correct operation.
• BF1 N AMP SUPV PICKUP: This setting is used to set the neutral current initiate and seal-in supervision level. Gener-
ally this setting should detect the lowest expected fault current on the protected breaker. Neutral current supervision is
used only in the three phase scheme to provide increased sensitivity. This setting is valid only for three-pole tripping
schemes.
• BF1 USE TIMER 1: If set to "Yes", the Early Path is operational.
• BF1 TIMER 1 PICKUP DELAY: Timer 1 is set to the shortest time required for breaker auxiliary contact Status-1 to
open, from the time the initial trip signal is applied to the breaker trip circuit, plus a safety margin.
• BF1 USE TIMER 2: If set to "Yes", the Main Path is operational.
• BF1 TIMER 2 PICKUP DELAY: Timer 2 is set to the expected opening time of the breaker, plus a safety margin. This
safety margin was historically intended to allow for measuring and timing errors in the breaker failure scheme equip-
ment. In microprocessor relays this time is not significant. In B30 relays, which use a Fourier transform, the calculated
current magnitude will ramp-down to zero one power frequency cycle after the current is interrupted, and this lag
should be included in the overall margin duration, as it occurs after current interruption. The Breaker Failure Main Path
Sequence diagram below shows a margin of two cycles; this interval is considered the minimum appropriate for most
applications.
Note that in bulk oil circuit breakers, the interrupting time for currents less than 25% of the interrupting rating can be
significantly longer than the normal interrupting time.
• BF1 USE TIMER 3: If set to "Yes", the Slow Path is operational.

5-88 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

• BF1 TIMER 3 PICKUP DELAY: Timer 3 is set to the same interval as Timer 2, plus an increased safety margin.
Because this path is intended to operate only for low level faults, the delay can be in the order of 300 to 500 ms.
• BF1 BKR POS1 φA/3P: This setting selects the FlexLogic™ operand that represents the protected breaker early-type
auxiliary switch contact (52/a). When using 1-Pole breaker failure scheme, this operand represents the protected
breaker early-type auxiliary switch contact on pole A. This is normally a non-multiplied Form-A contact. The contact
may even be adjusted to have the shortest possible operating time.
• BF1 BKR POS2 φA/3P: This setting selects the FlexLogic™ operand that represents the breaker normal-type auxiliary
switch contact (52/a). When using 1-Pole breaker failure scheme, this operand represents the protected breaker auxil-
iary switch contact on pole A. This may be a multiplied contact.
• BF1 BREAKER TEST ON: This setting is used to select the FlexLogic™ operand that represents the breaker In-Ser-
vice/Out-of-Service switch set to the Out-of-Service position.
• BF1 PH AMP HISET PICKUP: This setting sets the phase current output supervision level. Generally this setting
should detect the lowest expected fault current on the protected breaker, before a breaker opening resistor is inserted.
• BF1 N AMP HISET PICKUP: This setting sets the neutral current output supervision level. Generally this setting
should detect the lowest expected fault current on the protected breaker, before a breaker opening resistor is inserted.
Neutral current supervision is used only in the three pole scheme to provide increased sensitivity. This setting is valid
only for 3-pole breaker failure schemes.
• BF1 PH AMP LOSET PICKUP: This setting sets the phase current output supervision level. Generally this setting
should detect the lowest expected fault current on the protected breaker, after a breaker opening resistor is inserted
(approximately 90% of the resistor current).
• BF1 N AMP LOSET PICKUP: This setting sets the neutral current output supervision level. Generally this setting
should detect the lowest expected fault current on the protected breaker, after a breaker opening resistor is inserted

•
(approximately 90% of the resistor current). This setting is valid only for 3-pole breaker failure schemes.
BF1 LOSET TIME DELAY: Sets the pickup delay for current detection after opening resistor insertion.
5
• BF1 TRIP DROPOUT DELAY: This setting is used to set the period of time for which the trip output is sealed-in. This
timer must be coordinated with the automatic reclosing scheme of the failed breaker, to which the breaker failure ele-
ment sends a cancel reclosure signal. Reclosure of a remote breaker can also be prevented by holding a Transfer Trip
signal on longer than the "reclaim" time.
• BF1 PH A INITIATE / BF1 PH B INITIATE / BF 1 PH C INITIATE: These settings select the FlexLogic™ operand to ini-
tiate phase A, B, or C single-pole tripping of the breaker and the phase A, B, or C portion of the scheme, accordingly.
This setting is only valid for 1-pole breaker failure schemes.
• BF1 BKR POS1 φB / BF1 BKR POS 1 φC: These settings select the FlexLogic™ operand to represents the protected
breaker early-type auxiliary switch contact on poles B or C, accordingly. This contact is normally a non-multiplied Form-
A contact. The contact may even be adjusted to have the shortest possible operating time. This setting is valid only for
1-pole breaker failure schemes.
• BF1 BKR POS2 φB: Selects the FlexLogic™ operand that represents the protected breaker normal-type auxiliary
switch contact on pole B (52/a). This may be a multiplied contact. This setting is valid only for 1-pole breaker failure
schemes.
• BF1 BKR POS2 φC: This setting selects the FlexLogic™ operand that represents the protected breaker normal-type
auxiliary switch contact on pole C (52/a). This may be a multiplied contact. For single-pole operation, the scheme has
the same overall general concept except that it provides re-tripping of each single pole of the protected breaker. The
approach shown in the following single pole tripping diagram uses the initiating information to determine which pole is
supposed to trip. The logic is segregated on a per-pole basis. The overcurrent detectors have ganged settings. This
setting is valid only for 1-pole breaker failure schemes.
Upon operation of the breaker failure element for a single pole trip command, a 3-pole trip command should be given
via output operand BKR FAIL 1 TRIP OP.

GE Multilin B30 Bus Differential Relay 5-89

 5.5 GROUPED ELEMENTS 5 SETTINGS

In D60 Only
From Trip Output
FLEXLOGIC OPERANDS
TRIP PHASE C
TRIP PHASE B
TRIP 3-POLE
TRIP PHASE A

SETTING

BF1 FUNCTION:

Enable=1
Disable=0

SETTING AND

BF1 BLOCK :

Off=0

SETTING

BF1 PH A INITIATE:
OR
Off=0
FLEXLOGIC OPERAND

BKR FAIL 1 RETRIPA

SETTING OR
OR
BF1 3-POLE INITIATE : AND

Off=0 Initiated Ph A
TO SHEET 2 OF 2
SETTING

BF1 USE SEAL-IN:

5 YES=1
NO=0
AND
AND

SEAL-IN PATH
SETTING OR

BF1 USE AMP SUPV:

YES=1
NO=0 OR

OR
TO SHEET 2 OF 2
FLEXLOGIC OPERAND (Initiated)
SETTING
OR
BF1 PH B INITIATE : OR BKR FAIL 1 RETRIPB
AND
Off=0 AND
SEAL-IN PATH

Initiated Ph B
TO SHEET 2 OF 2
OR

SETTING OR
BF1 PH C INITIATE : FLEXLOGIC OPERAND
OR
BKR FAIL 1 RETRIPC
Off=0
AND
SETTING AND
SETTING SEAL-IN PATH
BF1 PH AMP SUPV
BF1 SOURCE : PICKUP : Initiated Ph C
RUN TO SHEET 2 OF 2
IA IA PICKUP
RUN
IB IB PICKUP OR
RUN
IC IC PICKUP

} TO SHEET 2 OF 2
(827070.CDR)

827069A5.CDR

Figure 5–47: BREAKER FAILURE 1-POLE [INITIATE] (Sheet 1 of 2)

5-90 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

FROM SHEET 1 OF 2
(Initiated)
SETTING
SETTING
BF1 TIMER 1 PICKUP
BF1 USE TIMER 1: DELAY: FLEXLOGIC OPERAND

YES=1 AND 0 BKR FAIL 1 T1 OP

NO=0

SETTING
BF1 BKR POS1 A/3P:

Off=0 AND

FROM SHEET 1 OF 2
Initiated Ph A
OR

SETTING SETTING
BF1 USE TIMER 2: BF1 TIMER 2 PICKUP
DELAY: AND
NO=0 FLEXLOGIC OPERAND
YES=1 AND 0
BKR FAIL 1 T2 OP
SETTING
BF1 BKR POS1 B:

Off=0 AND

FROM SHEET 1 OF 2 OR
Initiated Ph B

SETTING
BF1 BKR POS1 C:
AND

5
Off=0 AND

FROM SHEET 1 OF 2 OR
Initiated Ph C

AND
SETTING
BF1 PH AMP HISET
FROM SHEET 1 OF 2
PICKUP:
(827069.CDR)
RUN
IA IA PICKUP
RUN
IB IB PICKUP
RUN
IC IC PICKUP

SETTING SETTING
BF1 LOSET TIME SETTING
BF1 USE TIMER 3: DELAY: BF1 TRIP DROPOUT
YES=1 DELAY: FLEXLOGIC OPERAND
0
NO=0 0 BKR FAIL 1 TRIP OP
OR
0
SETTING SETTING
BF1 BKR POS2 A/3P: 0 BF1 PH AMP LOSET
PICKUP :
RUN
Off=0 IA PICKUP
SETTING RUN
IB PICKUP
SETTING BF1 TIMER 3 PICKUP RUN
IC PICKUP
DELAY:
BF1 BKR POS2 B:
AND 0 FLEXLOGIC OPERAND
Off=0 BKR FAIL 1 T3 OP

SETTING
BF1 BKR POS2 C:

Off=0

SETTING

BF1 BREAKER TEST ON:

Off=0 827070A4.CDR

Figure 5–48: BREAKER FAILURE 1-POLE [TIMERS] (Sheet 2 of 2)

GE Multilin B30 Bus Differential Relay 5-91

 5.5 GROUPED ELEMENTS 5 SETTINGS

Figure 5–49: BREAKER FAILURE 3-POLE [INITIATE] (Sheet 1 of 2)

5-92 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

Figure 5–50: BREAKER FAILURE 3-POLE [TIMERS] (Sheet 2 of 2)

GE Multilin B30 Bus Differential Relay 5-93

 5.5 GROUPED ELEMENTS 5 SETTINGS

5.5.8 VOLTAGE ELEMENTS

a) MAIN MENU
PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) VOLTAGE ELEMENTS

VOLTAGE ELEMENTS PHASE

See page 5–95.
UNDERVOLTAGE1
PHASE
MESSAGE See page 5–95.
UNDERVOLTAGE2
NEUTRAL OV1
MESSAGE See page 5–97.

NEUTRAL OV2
MESSAGE See page 5–97.

NEUTRAL OV3
MESSAGE See page 5–97.

AUXILIARY OV1
MESSAGE See page 5–98.

These protection elements can be used for a variety of applications such as:
Undervoltage Protection: For voltage sensitive loads, such as induction motors, a drop in voltage increases the drawn
current which may cause dangerous overheating in the motor. The undervoltage protection feature can be used to either
cause a trip or generate an alarm when the voltage drops below a specified voltage setting for a specified time delay.
5 Permissive Functions: The undervoltage feature may be used to block the functioning of external devices by operating an
output relay when the voltage falls below the specified voltage setting. The undervoltage feature may also be used to block
the functioning of other elements through the block feature of those elements.
Source Transfer Schemes: In the event of an undervoltage, a transfer signal may be generated to transfer a load from its
normal source to a standby or emergency power source.
The undervoltage elements can be programmed to have a Definite Time delay characteristic. The Definite Time curve oper-
ates when the voltage drops below the pickup level for a specified period of time. The time delay is adjustable from 0 to
600.00 seconds in steps of 10 ms. The undervoltage elements can also be programmed to have an inverse time delay
characteristic. The undervoltage delay setting defines the family of curves shown below.
D=5.0 2.0 1.0
20.0
D
T = ---------------------------------
- 18.0
V ⎞
⎛ 1 – ------------------
⎝ V ⎠ 16.0
pickup
14.0
Time (seconds)

where: T = Operating Time 12.0

D = Undervoltage Delay Setting 10.0

(D = 0.00 operates instantaneously) 8.0

V = Secondary Voltage applied to the relay 6.0

Vpickup = Pickup Level 4.0

2.0
At 0% of pickup, the operating time equals the
0.0
UNDERVOLTAGE DELAY setting. 0 10 20 30 40 50 60 70 80 90 100 110
NOTE
% of V pickup

Figure 5–51: INVERSE TIME UNDERVOLTAGE CURVES

5-94 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

b) PHASE UNDERVOLTAGE (ANSI 27P)

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) VOLTAGE ELEMENTS PHASE UNDERVOLTAGE1(2)

PHASE PHASE UV1 Range: Disabled, Enabled

UNDERVOLTAGE1 FUNCTION: Disabled
PHASE UV1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SOURCE: SRC 1
PHASE UV1 MODE: Range: Phase to Ground, Phase to Phase
MESSAGE
Phase to Ground
PHASE UV1 Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
PICKUP: 1.000 pu
PHASE UV1 Range: Definite Time, Inverse Time
MESSAGE
CURVE: Definite Time
PHASE UV1 Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 1.00 s
PHASE UV1 MINIMUM Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
VOLTAGE: 0.100 pu
PHASE UV1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off
PHASE UV1 Range: Self-reset, Latched, Disabled
MESSAGE
TARGET: Self-reset
PHASE UV1 Range: Disabled, Enabled 5
MESSAGE
EVENTS: Disabled

Two undervoltage elements facilitate applications including undervoltage supervision of the main bus differential protection
to prevent maloperation in the event of CT trouble.
In this scheme, the normal voltage level halts the differential element. An actual bus fault operates the undervoltage ele-
ment, thereby permitting the differential element to operate. This can be applied for bus configurations of up to 5 feeders
with the voltage signal available. If applied, use the undervoltage function to supervise the main differential output with an
AND gate in the FlexLogic™ equation before driving the output contact.
Using the drop-out undervoltage operand as the Block input to the differential element is not recommended. The differential
element includes the saturation detector that responds to certain time relationships between the differential and restraining
currents, and therefore, it must be operational all the time in order to function properly.
This element may be used to give a desired time-delay operating characteristic versus the applied fundamental voltage
(phase-to-ground or phase-to-phase for Wye VT connection, or phase-to-phase for Delta VT connection) or as a Definite
Time element. The element resets instantaneously if the applied voltage exceeds the dropout voltage. The delay setting
selects the minimum operating time of the phase undervoltage. The minimum voltage setting selects the operating voltage
below which the element is blocked (a setting of “0” will allow a dead source to be considered a fault condition).

GE Multilin B30 Bus Differential Relay 5-95

 5.5 GROUPED ELEMENTS 5 SETTINGS

SETTING SETTING
PHASE UV1 PHASE UV1
FUNCTION: PICKUP:
Disabled = 0 PHASE UV1
Enabled = 1 CURVE:
PHASE UV1
SETTING DELAY: FLEXLOGIC OPERANDS
AND
PHASE UV1 AND RUN VAG or VAB < PICKUP PHASE UV1 A PKP
BLOCK: t PHASE UV1 A DPO
Off = 0 PHASE UV1 A OP
V
SETTING
SETTING AND RUN VBG or VBC< PICKUP PHASE UV1 B PKP

}
PHASE UV1
t PHASE UV1 B DPO
PHASE UV1 SOURCE: MINIMUM VOLTAGE:
PHASE UV1 B OP
VAG or VAB < Minimum
Source VT = Delta V
VBG or VBC < Minimum
VAB AND RUN VCG or VCA < PICKUP PHASE UV1 C PKP
VCG or VCA < Minimum
VBC t PHASE UV1 C DPO
VCA PHASE UV1 C OP
Source VT = Wye V
FLEXLOGIC OPERAND
SETTING OR PHASE UV1 PKP

PHASE UV1 MODE:

Phase to Ground Phase to Phase FLEXLOGIC OPERAND

VAG VAB OR PHASE UV1 OP
VBG VBC
VCG VCA
FLEXLOGIC OPERAND
AND PHASE UV1 DPO

827039AB.CDR

Figure 5–52: PHASE UNDERVOLTAGE1 SCHEME LOGIC

5-96 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.5 GROUPED ELEMENTS

c) NEUTRAL OVERVOLTAGE (ANSI 59N)

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) VOLTAGE ELEMENTS NEUTRAL OV1(3)

NEUTRAL OV1 NEUTRAL OV1 Range: Disabled, Enabled

FUNCTION: Disabled
NEUTRAL OV1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SOURCE: SRC 1
NEUTRAL OV1 PICKUP: Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
0.300 pu
NEUTRAL OV1 CURVE: Range: Definite time, FlexCurve A, FlexCurve B,
MESSAGE FlexCurve C
Definite time
NEUTRAL OV1 PICKUP: Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 1.00 s
NEUTRAL OV1 RESET: Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 1.00 s
NEUTRAL OV1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off
NEUTRAL OV1 TARGET: Range: Self-reset, Latched, Disabled
MESSAGE
Self-reset
NEUTRAL OV1 EVENTS: Range: Disabled, Enabled
MESSAGE
Disabled
5
There are three neutral overvoltage elements available. The neutral overvoltage element can be used to detect asymmetri-
cal system voltage condition due to a ground fault or to the loss of one or two phases of the source. The element responds
to the system neutral voltage (3V_0), calculated from the phase voltages. The nominal secondary voltage of the phase volt-
age channels entered under SETTINGS SYSTEM SETUP AC INPUTS VOLTAGE BANK PHASE VT SECONDARY is the
p.u. base used when setting the pickup level.
The Neutral Overvoltage element can provide a time-delayed operating characteristic versus the applied voltage (initialized
from FlexCurves A, B, or C) or be used as a definite time element. The NEUTRAL OV1(3) PICKUP DELAY setting applies only if
the NEUTRAL OV1(3) CURVE setting is “Definite time”. The source assigned to this element must be configured for a phase
VT.
VT errors and normal voltage unbalance must be considered when setting this element. This function requires the VTs to
be Wye connected.

Figure 5–53: NEUTRAL OVERVOLTAGE1 SCHEME LOGIC

GE Multilin B30 Bus Differential Relay 5-97

 5.5 GROUPED ELEMENTS 5 SETTINGS

d) AUXILIARY OVERVOLTAGE (ANSI 27X)

PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) VOLTAGE ELEMENTS AUXILIARY OV1

AUXILIARY OV1 AUX OV1 Range: Disabled, Enabled

FUNCTION: Disabled
AUX OV1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
SOURCE: SRC 1
AUX OV1 PICKUP: Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
0.300 pu
AUX OV1 PICKUP Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 1.00 s
AUX OV1 RESET Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
DELAY: 1.00 s
AUX OV1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off
AUX OV1 TARGET: Range: Self-reset, Latched, Disabled
MESSAGE
Self-reset
AUX OV1 EVENTS: Range: Disabled, Enabled
MESSAGE
Disabled

This element is intended for monitoring overvoltage conditions of the auxiliary voltage. The nominal secondary voltage of

5 the auxiliary voltage channel entered under SYSTEM SETUP AC INPUTS

ONDARY is the p.u. base used when setting the pickup level.
VOLTAGE BANK X5 AUXILIARY VT X5 SEC-

SETTING
AUX OV1
FUNCTION:
Disabled=0
SETTING
Enabled=1
AUX OV1 PICKUP: SETTING
SETTING
AND RUN AUX OV1 PICKUP
DELAY :
AUX OV1 BLOCK:
AUX OV1 RESET
Off=0 DELAY :
FLEXLOGIC OPERANDS
Vx < Pickup tPKP
SETTING tRST AUX OV1 OP
AUX OV1 DPO
AUX OV1 SIGNAL
SOURCE: AUX OV1 PKP
AUXILIARY VOLT (Vx)
827836A2.CDR

Figure 5–54: AUXILIARY OVERVOLTAGE SCHEME LOGIC

5-98 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.6 CONTROL ELEMENTS

5.6CONTROL ELEMENTS 5.6.1 OVERVIEW

Control elements are generally used for control rather than protection. See the Introduction to Elements section at the
beginning of this chapter for further information.

5.6.2 SETTING GROUPS

PATH: SETTINGS CONTROL ELEMENTS SETTINGS GROUPS

SETTING GROUPS SETTING GROUPS Range: Disabled, Enabled

FUNCTION: Disabled
SETTING GROUPS BLK: Range: FlexLogic™ operand
MESSAGE
Off
GROUP 2 ACTIVATE ON: Range: FlexLogic™ operand
MESSAGE
Off
GROUP 3 ACTIVATE ON: Range: FlexLogic™ operand
MESSAGE
Off
↓
GROUP 6 ACTIVATE ON: Range: FlexLogic™ operand
MESSAGE
Off
GROUP 1 NAME: Range: up to 16 alphanumeric characters
MESSAGE

GROUP 2 NAME: Range: up to 16 alphanumeric characters

5
MESSAGE

↓
GROUP 6 NAME: Range: up to 16 alphanumeric characters
MESSAGE

SETTING GROUP Range: Disabled, Enabled

MESSAGE
EVENTS: Disabled

The Setting Groups menu controls the activation/deactivation of up to six possible groups of settings in the GROUPED ELE-
MENTS settings menu. The faceplate ‘Settings In Use’ LEDs indicate which active group (with a non-flashing energized
LED) is in service.
The SETTING GROUPS BLK setting prevents the active setting group from changing when the FlexLogic™ parameter is set to
"On". This can be useful in applications where it is undesirable to change the settings under certain conditions, such as the
breaker being open.
Each GROUP n ACTIVATE ON setting selects a FlexLogic™ operand which, when set, will make the particular setting group
active for use by any grouped element. A priority scheme ensures that only one group is active at a given time – the high-
est-numbered group which is activated by its GROUP n ACTIVATE ON parameter takes priority over the lower-numbered
groups. There is no “activate on” setting for Group 1 (the default active group), because Group 1 automatically becomes
active if no other group is active.
The SETTING GROUP 1(6) NAME settings allows to user to assign a name to each of the six settings groups. Once pro-
grammed, this name will appear on the second line of the GROUPED ELEMENTS SETTING GROUP 1(6) menu display.
The relay can be set up via a FlexLogic™ equation to receive requests to activate or de-activate a particular non-default
settings group. The following FlexLogic™ equation (see the figure below) illustrates requests via remote communications
(e.g. VIRTUAL INPUT 1) or from a local contact input (e.g. H7a) to initiate the use of a particular settings group, and requests
from several overcurrent pickup measuring elements to inhibit the use of the particular settings group. The assigned VIR-
TUAL OUTPUT 1 operand is used to control the “On” state of a particular settings group.

GE Multilin B30 Bus Differential Relay 5-99

 5.6 CONTROL ELEMENTS 5 SETTINGS

Figure 5–55: EXAMPLE FLEXLOGIC™ CONTROL OF A SETTINGS GROUP

5.6.3 SELECTOR SWITCH

PATH: SETTINGS CONTROL ELEMENTS SELECTOR SWITCH SELECTOR SWITCH 1(2)

SELECTOR SWITCH 1 SELECTOR 1 FUNCTION: Range: Disabled, Enabled

Disabled
SELECTOR 1 FULL Range: 1 to 7 in steps of 1
MESSAGE
RANGE: 7
5 MESSAGE
SELECTOR 1 TIME-OUT: Range: 3.0 to 60.0 s in steps of 0.1
5.0 s
SELECTOR 1 STEP-UP: Range: FlexLogic™ operand
MESSAGE
Off
SELECTOR 1 STEP-UP Range: Time-out, Acknowledge
MESSAGE
MODE: Time-out
SELECTOR 1 ACK: Range: FlexLogic™ operand
MESSAGE
Off
SELECTOR 1 3BIT A0: Range: FlexLogic™ operand
MESSAGE
Off
SELECTOR 1 3BIT A1: Range: FlexLogic™ operand
MESSAGE
Off
SELECTOR 1 3BIT A2: Range: FlexLogic™ operand
MESSAGE
Off
SELECTOR 1 3BIT Range: Time-out, Acknowledge
MESSAGE
MODE: Time-out
SELECTOR 1 3BIT ACK: Range: FlexLogic™ operand
MESSAGE
Off
SELECTOR 1 POWER-UP Range: Restore, Synchronize, Sync/Restore
MESSAGE
MODE: Restore
SELECTOR 1 TARGETS: Range: Self-reset, Latched, Disabled
MESSAGE
Self-reset
SELECTOR 1 EVENTS: Range: Disabled, Enabled
MESSAGE
Disabled

5-100 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.6 CONTROL ELEMENTS

The Selector Switch element is intended to replace a mechanical selector switch. Typical applications include setting group
control or control of multiple logic sub-circuits in user-programmable logic.
The element provides for two control inputs. The step-up control allows stepping through selector position one step at a
time with each pulse of the control input, such as a user-programmable pushbutton. The 3-bit control input allows setting
the selector to the position defined by a 3-bit word.
The element allows pre-selecting a new position without applying it. The pre-selected position gets applied either after time-
out or upon acknowledgement via separate inputs (user setting). The selector position is stored in non-volatile memory.
Upon power-up, either the previous position is restored or the relay synchronizes to the current 3-bit word (user setting).
Basic alarm functionality alerts the user under abnormal conditions; e.g. the 3-bit control input being out of range.
• SELECTOR 1 FULL RANGE: This setting defines the upper position of the selector. When stepping up through avail-
able positions of the selector, the upper position wraps up to the lower position (Position 1). When using a direct 3-bit
control word for programming the selector to a desired position, the change would take place only if the control word is
within the range of 1 to the SELECTOR FULL RANGE. If the control word is outside the range, an alarm is established by
setting the SELECTOR ALARM FlexLogic™ operand for 3 seconds.
• SELECTOR 1 TIME-OUT: This setting defines the time-out period for the selector. This value is used by the relay in
the following two ways. When the SELECTOR STEP-UP MODE is “Time-out”, the setting specifies the required period of
inactivity of the control input after which the pre-selected position is automatically applied. When the SELECTOR STEP-
UP MODE is “Acknowledge”, the setting specifies the period of time for the acknowledging input to appear. The timer is
re-started by any activity of the control input. The acknowledging input must come before the SELECTOR 1 TIME-OUT
timer expires; otherwise, the change will not take place and an alarm will be set.
• SELECTOR 1 STEP-UP: This setting specifies a control input for the selector switch. The switch is shifted to a new
position at each rising edge of this signal. The position changes incrementally, wrapping up from the last (SELECTOR 1
FULL RANGE) to the first (Position 1). Consecutive pulses of this control operand must not occur faster than every
50 ms. After each rising edge of the assigned operand, the time-out timer is restarted and the SELECTOR SWITCH 1:
POS Z CHNG INITIATED target message is displayed, where Z the pre-selected position. The message is displayed for
5
the time specified by the FLASH MESSAGE TIME setting. The pre-selected position is applied after the selector times out
(“Time-out” mode), or when the acknowledging signal appears before the element times out (“Acknowledge” mode).
When the new position is applied, the relay displays the SELECTOR SWITCH 1: POSITION Z IN USE message. Typically,
a user-programmable pushbutton is configured as the stepping up control input.
• SELECTOR 1 STEP-UP MODE: This setting defines the selector mode of operation. When set to “Time-out”, the
selector will change its position after a pre-defined period of inactivity at the control input. The change is automatic and
does not require any explicit confirmation of the intent to change the selector's position. When set to “Acknowledge”,
the selector will change its position only after the intent is confirmed through a separate acknowledging signal. If the
acknowledging signal does not appear within a pre-defined period of time, the selector does not accept the change
and an alarm is established by setting the SELECTOR STP ALARM output FlexLogic™ operand for 3 seconds.
• SELECTOR 1 ACK: This setting specifies an acknowledging input for the stepping up control input. The pre-selected
position is applied on the rising edge of the assigned operand. This setting is active only under “Acknowledge” mode of
operation. The acknowledging signal must appear within the time defined by the SELECTOR 1 TIME-OUT setting after the
last activity of the control input. A user-programmable pushbutton is typically configured as the acknowledging input.
• SELECTOR 1 3BIT A0, A1, and A2: These settings specify a 3-bit control input of the selector. The 3-bit control word
pre-selects the position using the following encoding convention:

A2 A1 A0 POSITION
0 0 0 rest
0 0 1 1
0 1 0 2
0 1 1 3
1 0 0 4
1 0 1 5
1 1 0 6
1 1 1 7

GE Multilin B30 Bus Differential Relay 5-101

 5.6 CONTROL ELEMENTS 5 SETTINGS

The “rest” position (0, 0, 0) does not generate an action and is intended for situations when the device generating the
3-bit control word is having a problem. When SELECTOR 1 3BIT MODE is “Time-out”, the pre-selected position is applied
in SELECTOR 1 TIME-OUT seconds after the last activity of the 3-bit input. When SELECTOR 1 3BIT MODE is “Acknowl-
edge”, the pre-selected position is applied on the rising edge of the SELECTOR 1 3BIT ACK acknowledging input.
The stepping up control input (SELECTOR 1 STEP-UP) and the 3-bit control inputs (SELECTOR 1 3BIT A0 through A2) lock-
out mutually: once the stepping up sequence is initiated, the 3-bit control input is inactive; once the 3-bit control
sequence is initiated, the stepping up input is inactive.
• SELECTOR 1 3BIT MODE: This setting defines the selector mode of operation. When set to “Time-out”, the selector
changes its position after a pre-defined period of inactivity at the control input. The change is automatic and does not
require explicit confirmation to change the selector position. When set to “Acknowledge”, the selector changes its posi-
tion only after confirmation via a separate acknowledging signal. If the acknowledging signal does not appear within a
pre-defined period of time, the selector rejects the change and an alarm established by invoking the SELECTOR BIT
ALARM FlexLogic™ operand for 3 seconds.
• SELECTOR 1 3BIT ACK: This setting specifies an acknowledging input for the 3-bit control input. The pre-selected
position is applied on the rising edge of the assigned FlexLogic™ operand. This setting is active only under the
“Acknowledge” mode of operation. The acknowledging signal must appear within the time defined by the SELECTOR
TIME-OUT setting after the last activity of the 3-bit control inputs. Note that the stepping up control input and 3-bit control
input have independent acknowledging signals (SELECTOR 1 ACK and SELECTOR 1 3BIT ACK, accordingly).
• SELECTOR 1 POWER-UP MODE: This setting specifies the element behavior on power up of the relay.
When set to “Restore”, the last position of the selector (stored in the non-volatile memory) is restored after powering up
the relay. If the position restored from memory is out of range, position 0 (no output operand selected) is applied and
an alarm is set (SELECTOR 1 PWR ALARM).
When set to “Synchronize” selector switch acts as follows. For two power cycles, the selector applies position 0 to the
5 switch and activates SELECTOR 1 PWR ALARM. After two power cycles expire, the selector synchronizes to the position
dictated by the 3-bit control input. This operation does not wait for time-out or the acknowledging input. When the syn-
chronization attempt is unsuccessful (i.e., the 3-bit input is not available (0,0,0) or out of range) then the selector switch
output is set to position 0 (no output operand selected) and an alarm is established (SELECTOR 1 PWR ALARM).
The operation of “Synch/Restore” mode is similar to the “Synchronize” mode. The only difference is that after an
unsuccessful synchronization attempt, the switch will attempt to restore the position stored in the relay memory. The
“Synch/Restore” mode is useful for applications where the selector switch is employed to change the setting group in
redundant (two relay) protection schemes.
• SELECTOR 1 EVENTS: If enabled, the following events are logged:

EVENT NAME DESCRIPTION

SELECTOR 1 POS Z Selector 1 changed its position to Z.
SELECTOR 1 STP ALARM The selector position pre-selected via the stepping up control input has not been
confirmed before the time out.
SELECTOR 1 BIT ALARM The selector position pre-selected via the 3-bit control input has not been confirmed
before the time out.

5-102 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.6 CONTROL ELEMENTS

The following figures illustrate the operation of the Selector Switch. In these diagrams, “T” represents a time-out setting.

pre-existing changed to 4 with changed to 1 with changed to 2 with a changed to 7 with

position 2 a pushbutton a 3-bit input pushbutton a 3-bit input

STEP-UP

T T

3BIT A0

3BIT A1

3BIT A2
T T

POS 1

POS 2

POS 3

POS 4

POS 5

POS 6 5
POS 7

BIT 0

BIT 1

BIT 2

STP ALARM

BIT ALARM

ALARM
842737A1.CDR

Figure 5–56: TIME-OUT MODE

GE Multilin B30 Bus Differential Relay 5-103

 5.6 CONTROL ELEMENTS 5 SETTINGS

pre-existing changed to 4 with changed to 1 with changed to 2 with

position 2 a pushbutton a 3-bit input a pushbutton

STEP-UP

ACK

3BIT A0

3BIT A1

3BIT A2

3BIT ACK

POS 1

POS 2

POS 3

POS 4

POS 5

POS 6

5 POS 7

BIT 0

BIT 1

BIT 2

STP ALARM

BIT ALARM

ALARM

842736A1.CDR

Figure 5–57: ACKNOWLEDGE MODE

5-104 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.6 CONTROL ELEMENTS

APPLICATION EXAMPLE
Consider an application where the selector switch is used to control Setting Groups 1 through 4 in the relay. The setting
groups are to be controlled from both User-Programmable Pushbutton 1 and from an external device via Contact Inputs 1
through 3. The active setting group shall be available as an encoded 3-bit word to the external device and SCADA via out-
put contacts 1 through 3. The pre-selected setting group shall be applied automatically after 5 seconds of inactivity of the
control inputs. When the relay powers up, it should synchronize the setting group to the 3-bit control input.
Make the following changes to Setting Group Control in the SETTINGS CONTROL ELEMENTS SETTING GROUPS menu:
SETTING GROUPS FUNCTION: “Enabled” GROUP 4 ACTIVATE ON: “SELECTOR 1 POS 4"
SETTING GROUPS BLK: “Off” GROUP 5 ACTIVATE ON: “Off”
GROUP 2 ACTIVATE ON: “SELECTOR 1 POS 2" GROUP 6 ACTIVATE ON: “Off”
GROUP 3 ACTIVATE ON: “SELECTOR 1 POS 3"
Make the following changes to Selector Switch element in the SETTINGS CONTROL ELEMENTS SELECTOR SWITCH
SELECTOR SWITCH 1 menu to assign control to User Programmable Pushbutton 1 and Contact Inputs 1 through 3:
SELECTOR 1 FUNCTION: “Enabled” SELECTOR 1 3BIT A0: “CONT IP 1 ON”
SELECTOR 1 FULL-RANGE: “4” SELECTOR 1 3BIT A1: “CONT IP 2 ON”
SELECTOR 1 STEP-UP MODE: “Time-out” SELECTOR 1 3BIT A2: “CONT IP 3 ON”
SELECTOR 1 TIME-OUT: “5.0 s” SELECTOR 1 3BIT MODE: “Time-out”
SELECTOR 1 STEP-UP: “PUSHBUTTON 1 ON” SELECTOR 1 3BIT ACK: “Off”
SELECTOR 1 ACK: “Off” SELECTOR 1 POWER-UP MODE: “Synchronize”

Now, assign the contact output operation (assume the H6E module) to the Selector Switch element by making the following
changes in the SETTINGS INPUTS/OUTPUTS CONTACT OUTPUTS menu:

OUTPUT H1 OPERATE: “SELECTOR 1 BIT 0"

OUTPUT H2 OPERATE:
OUTPUT H3 OPERATE:
“SELECTOR 1 BIT 1"
“SELECTOR 1 BIT 2" 5
Finally, assign configure User-Programmable Pushbutton 1 by making the following changes in the SETTINGS PRODUCT
SETUP USER-PROGRAMMABLE PUSHBUTTONS USER PUSHBUTTON 1 menu:

PUSHBUTTON 1 FUNCTION: “Self-reset”

PUSHBUTTON 1 DROP-OUT TIME: “0.10 s”

The logic for the selector switch is shown below:

SETTINGS
SELECTOR 1 FULL RANGE:

SELECTOR 1 STEP-UP MODE:

SELECTOR 1 3BIT MODE:

SELECTOR 1 TIME-OUT: ACTUAL VALUE

SETTINGS
SELECTOR 1 POSITION
SELECTOR 1 FUNCTION: SELECTOR 1 POWER-UP MODE:
Enabled = 1 RUN
SELECTOR 1 STEP-UP: FLEXLOGIC OPERANDS
Off step up SELECTOR 1 POS 1
2
SELECTOR 1 ACK: 1 SELECTOR 1 POS 2
3
Off acknowledge SELECTOR 1 POS 3
SELECTOR 1 3BIT A0: 4
SELECTOR 1 POS 4
Off on SELECTOR 1 POS 5
3-bit control in

SELECTOR 1 3BIT A1: 7 5

SELECTOR 1 POS 6
Off 6
SELECTOR 1 POS 7
SELECTOR 1 3BIT A2:
Off FLEXLOGIC OPERANDS
SELECTOR 1 3BIT ACK:
SELECTOR 1 STP ALARM
3-bit
Off
acknowledge 3-bit position out SELECTOR 1 BIT ALARM
OR

SELECTOR 1 ALARM
SELECTOR 1 PWR ALARM
SELECTOR 1 BIT 0
SELECTOR 1 BIT 1
SELECTOR 1 BIT 2
842012A1.CDR

Figure 5–58: SELECTOR SWITCH LOGIC

GE Multilin B30 Bus Differential Relay 5-105

 5.6 CONTROL ELEMENTS 5 SETTINGS

5.6.4 DIGITAL ELEMENTS

PATH: SETTINGS CONTROL ELEMENTS DIGITAL ELEMENTS DIGITAL ELEMENT 1(48)

DIGITAL ELEMENT 1 DIGITAL ELEMENT 1 Range: Disabled, Enabled

FUNCTION: Disabled
DIG ELEM 1 NAME: Range: 16 alphanumeric characters
MESSAGE
Dig Element 1
DIG ELEM 1 INPUT: Range: FlexLogic™ operand
MESSAGE
Off
DIG ELEM 1 PICKUP Range: 0.000 to 999999.999 s in steps of 0.001
MESSAGE
DELAY: 0.000 s
DIG ELEM 1 RESET Range: 0.000 to 999999.999 s in steps of 0.001
MESSAGE
DELAY: 0.000 s
DIG ELEMENT 1 Range: Disabled, Enabled
MESSAGE
PICKUP LED: Enabled
DIG ELEM 1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off
DIGITAL ELEMENT 1 Range: Self-reset, Latched, Disabled
MESSAGE
TARGET: Self-reset
DIGITAL ELEMENT 1 Range: Disabled, Enabled

5 MESSAGE
EVENTS: Disabled

There are 48 identical digital elements available, numbered 1 to 48. A digital element can monitor any FlexLogic™ operand
and present a target message and/or enable events recording depending on the output operand state. The digital element
settings include a name which will be referenced in any target message, a blocking input from any selected FlexLogic™
operand, and a timer for pickup and reset delays for the output operand.
• DIGITAL ELEMENT 1 INPUT: Selects a FlexLogic™ operand to be monitored by the digital element.
• DIGITAL ELEMENT 1 PICKUP DELAY: Sets the time delay to pickup. If a pickup delay is not required, set to "0".
• DIGITAL ELEMENT 1 RESET DELAY: Sets the time delay to reset. If a reset delay is not required, set to “0”.
• DIGITAL ELEMENT 1 PICKUP LED: This setting enables or disabled the digital element pickup LED. When set to
“Disabled”, the operation of the pickup LED is blocked.

SETTING
DIGITAL ELEMENT 01
FUNCTION:
Disabled = 0 SETTINGS
Enabled = 1 DIGITAL ELEMENT 01
SETTING PICKUP DELAY:
DIGITAL ELEMENT 01 DIGITAL ELEMENT 01 FLEXLOGIC OPERANDS
SETTING
NAME: RESET DELAY:
DIGITAL ELEMENT 01 DIG ELEM 01 DPO
AND RUN tPKP
INPUT: DIG ELEM 01 PKP
Off = 0 DIG ELEM 01 OP
INPUT = 1 tRST
SETTING
DIGITAL ELEMENT 01
BLOCK:
827042A1.VSD
Off = 0

Figure 5–59: DIGITAL ELEMENT SCHEME LOGIC

CIRCUIT MONITORING APPLICATIONS:
Some versions of the digital input modules include an active voltage monitor circuit connected across Form-A contacts. The
voltage monitor circuit limits the trickle current through the output circuit (see technical specifications for Form-A).

5-106 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.6 CONTROL ELEMENTS

As long as the current through the Voltage Monitor is above a threshold (see technical specifications for Form-A), the Flex-
Logic™ operand "Cont Op # VOn" will be set (# represents the output contact number). If the output circuit has a high resis-
tance or the DC current is interrupted, the trickle current will drop below the threshold and the FlexLogic™ operand "Cont
Op # VOff" will be set. Consequently, the state of these operands can be used as indicators of the integrity of the circuits in
which Form-A contacts are inserted.
EXAMPLE 1: BREAKER TRIP CIRCUIT INTEGRITY MONITORING
In many applications it is desired to monitor the breaker trip circuit integrity so problems can be detected before a trip oper-
ation is required. The circuit is considered to be healthy when the voltage monitor connected across the trip output contact
detects a low level of current, well below the operating current of the breaker trip coil. If the circuit presents a high resis-
tance, the trickle current will fall below the monitor threshold and an alarm would be declared.
In most breaker control circuits, the trip coil is connected in series with a breaker auxiliary contact which is open when the
breaker is open (see diagram below). To prevent unwanted alarms in this situation, the trip circuit monitoring logic must
include the breaker position.

DC+

UR Relay - Form-A

H1a
I = Current Monitor I
H1b
V = Voltage Monitor V
H1c

52a

5
Trip
Coil

827073A1.vsd
DC–
Figure 5–60: TRIP CIRCUIT EXAMPLE 1
Assume the output contact H1 is a trip contact. Using the contact output settings, this output will be given an ID name, e.g.
“Cont Op 1". Assume a 52a breaker auxiliary contact is connected to contact input H7a to monitor breaker status. Using the
contact input settings, this input will be given an ID name, e.g. “Cont Ip 1" and will be set “On” when the breaker is closed.
Using Digital Element 1 to monitor the breaker trip circuit, the settings will be:

DIGITAL ELEMENT 1 DIGITAL ELEMENT 1

FUNCTION: Enabled
DIG ELEM 1 NAME:
MESSAGE
Bkr Trip Cct Out
DIG ELEM 1 INPUT:
MESSAGE
Cont Op 1 VOff
DIG ELEM 1 PICKUP
MESSAGE
DELAY: 0.200 s
DIG ELEM 1 RESET
MESSAGE
DELAY: 0.100 s
DIG ELEM 1 BLOCK:
MESSAGE
Cont Ip 1 Off
DIGITAL ELEMENT 1
MESSAGE
TARGET: Self-reset
DIGITAL ELEMENT 1
MESSAGE
EVENTS: Enabled

GE Multilin B30 Bus Differential Relay 5-107

 5.6 CONTROL ELEMENTS 5 SETTINGS

The PICKUP DELAY setting should be greater than the operating time of the breaker to avoid nuisance
alarms.
NOTE

EXAMPLE 2: BREAKER TRIP CIRCUIT INTEGRITY MONITORING

If it is required to monitor the trip circuit continuously, independent of the breaker position (open or closed), a method to
maintain the monitoring current flow through the trip circuit when the breaker is open must be provided (as shown in the fig-
ure below). This can be achieved by connecting a suitable resistor (see figure below) across the auxiliary contact in the trip
circuit. In this case, it is not required to supervise the monitoring circuit with the breaker position – the BLOCK setting is
selected to “Off”. In this case, the settings will be:

DIGITAL ELEMENT 1 DIGITAL ELEMENT 1

FUNCTION: Enabled
DIG ELEM 1 NAME:
MESSAGE
Bkr Trip Cct Out
DIG ELEM 1 INPUT:
MESSAGE
Cont Op 1 VOff
DIG ELEM 1 PICKUP
MESSAGE
DELAY: 0.200 s
DIG ELEM 1 RESET
MESSAGE
DELAY: 0.100 s
DIG ELEM 1 BLOCK:
5
MESSAGE
Off
DIGITAL ELEMENT 1
MESSAGE
TARGET: Self-reset
DIGITAL ELEMENT 1
MESSAGE
EVENTS: Enabled

DC+

UR Relay - Form-A Table 5–17: VALUES OF RESISTOR ‘R’

POWER RESISTANCE POWER
H1a SUPPLY (V DC) (OHMS) (WATTS)
I = Current Monitor I
24 1000 2
H1c
30 5000 2
V = Voltage Monitor V
H1b 48 10000 2
110 25000 5
52a By-pass
R
Resistor 125 25000 5
250 50000 5

Trip
Coil

827074A2.VSD
DC–
Figure 5–61: TRIP CIRCUIT EXAMPLE 2

5-108 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.6 CONTROL ELEMENTS

5.6.5 DIGITAL COUNTERS

PATH: SETTINGS CONTROL ELEMENTS DIGITAL COUNTERS COUNTER 1(8)

COUNTER 1 COUNTER 1 Range: Disabled, Enabled

FUNCTION: Disabled
COUNTER 1 NAME: Range: 12 alphanumeric characters
MESSAGE
Counter 1
COUNTER 1 UNITS: Range: 6 alphanumeric characters
MESSAGE

COUNTER 1 PRESET: Range: –2,147,483,648 to +2,147,483,647

MESSAGE
0
COUNTER 1 COMPARE: Range: –2,147,483,648 to +2,147,483,647
MESSAGE
0
COUNTER 1 UP: Range: FlexLogic™ operand
MESSAGE
Off
COUNTER 1 DOWN: Range: FlexLogic™ operand
MESSAGE
Off
COUNTER 1 BLOCK: Range: FlexLogic™ operand
MESSAGE
Off
CNT1 SET TO PRESET: Range: FlexLogic™ operand
MESSAGE
Off 5
COUNTER 1 RESET: Range: FlexLogic™ operand
MESSAGE
Off
COUNT1 FREEZE/RESET: Range: FlexLogic™ operand
MESSAGE
Off
COUNT1 FREEZE/COUNT: Range: FlexLogic™ operand
MESSAGE
Off

There are 8 identical digital counters, numbered from 1 to 8. A digital counter counts the number of state transitions from
Logic 0 to Logic 1. The counter is used to count operations such as the pickups of an element, the changes of state of an
external contact (e.g. breaker auxiliary switch), or pulses from a watt-hour meter.
• COUNTER 1 UNITS: Assigns a label to identify the unit of measure pertaining to the digital transitions to be counted.
The units label will appear in the corresponding actual values status.
• COUNTER 1 PRESET: Sets the count to a required preset value before counting operations begin, as in the case
where a substitute relay is to be installed in place of an in-service relay, or while the counter is running.
• COUNTER 1 COMPARE: Sets the value to which the accumulated count value is compared. Three FlexLogic™ output
operands are provided to indicate if the present value is ‘more than (HI)’, ‘equal to (EQL)’, or ‘less than (LO)’ the set
value.
• COUNTER 1 UP: Selects the FlexLogic™ operand for incrementing the counter. If an enabled UP input is received
when the accumulated value is at the limit of +2,147,483,647 counts, the counter will rollover to –2,147,483,648.
• COUNTER 1 DOWN: Selects the FlexLogic™ operand for decrementing the counter. If an enabled DOWN input is
received when the accumulated value is at the limit of –2,147,483,648 counts, the counter will rollover to
+2,147,483,647.
• COUNTER 1 BLOCK: Selects the FlexLogic™ operand for blocking the counting operation. All counter operands are
blocked.

GE Multilin B30 Bus Differential Relay 5-109

 5.6 CONTROL ELEMENTS 5 SETTINGS

• CNT1 SET TO PRESET: Selects the FlexLogic™ operand used to set the count to the preset value. The counter will
be set to the preset value in the following situations:
1. When the counter is enabled and the CNT1 SET TO PRESET operand has the value 1 (when the counter is enabled
and CNT1 SET TO PRESET operand is 0, the counter will be set to 0).
2. When the counter is running and the CNT1 SET TO PRESET operand changes the state from 0 to 1 (CNT1 SET TO
PRESET changing from 1 to 0 while the counter is running has no effect on the count).
3. When a reset or reset/freeze command is sent to the counter and the CNT1 SET TO PRESET operand has the value
1 (when a reset or reset/freeze command is sent to the counter and the CNT1 SET TO PRESET operand has the
value 0, the counter will be set to 0).
• COUNTER 1 RESET: Selects the FlexLogic™ operand for setting the count to either “0” or the preset value depending
on the state of the CNT1 SET TO PRESET operand.
• COUNTER 1 FREEZE/RESET: Selects the FlexLogic™ operand for capturing (freezing) the accumulated count value
into a separate register with the date and time of the operation, and resetting the count to “0”.
• COUNTER 1 FREEZE/COUNT: Selects the FlexLogic™ operand for capturing (freezing) the accumulated count value
into a separate register with the date and time of the operation, and continuing counting. The present accumulated
value and captured frozen value with the associated date/time stamp are available as actual values. If control power is
interrupted, the accumulated and frozen values are saved into non-volatile memory during the power down operation.

SETTING
COUNTER 1 FUNCTION:
Disabled = 0
SETTINGS
Enabled = 1
COUNTER 1 NAME:

5 SETTING
COUNTER 1 UP:
AND COUNTER 1 UNITS:
COUNTER 1 PRESET:
RUN
Off = 0 SETTING
FLEXLOGIC
COUNTER 1 COMPARE: OPERANDS
SETTING
CALCULATE Count more than Comp. COUNTER 1 HI
COUNTER 1 DOWN: VALUE Count equal to Comp. COUNTER 1 EQL
Off = 0 Count less than Comp. COUNTER 1 LO

SETTING
COUNTER 1 BLOCK:
Off = 0 SET TO PRESET VALUE

SETTING SET TO ZERO

ACTUAL VALUE
CNT 1 SET TO PRESET: COUNTER 1 ACCUM:
Off = 0
AND

SETTING AND ACTUAL VALUES

COUNTER 1 RESET:
COUNTER 1 FROZEN:
Off = 0
OR STORE DATE & TIME Date & Time
SETTING
COUNT1 FREEZE/RESET:
Off = 0
OR
827065A1.VSD
SETTING
COUNT1 FREEZE/COUNT:
Off = 0

Figure 5–62: DIGITAL COUNTER SCHEME LOGIC

5-110 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.6 CONTROL ELEMENTS

5.6.6 MONITORING ELEMENTS

a) CT TROUBLE ZONE
PATH: SETTINGS CONTROL ELEMENTS MONITORING ELEMENTS CT TROUBLE ZONE 1

CT TROUBLE ZONE 1 CT TROUBLE ZONE 1 Range: Disabled, Enabled, Alarm

FUNCTION: Disabled
CT TROUBLE ZONE 1 Range: 0.020 to 2.000 pu in steps of 0.001
MESSAGE
PICKUP: 0.100 pu
CT TROUBLE ZONE 1 Range: 1.0 to 60.0 s in steps of 0.1
MESSAGE
DELAY: 10.0 s
CT TROUBLE ZONE 1 Range: Self-reset, Latched, Disabled
MESSAGE
TARGET: Self-reset
CT TROUBLE ZONE 1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

This element uses the differential current calculated in accordance with the bus configuration programmed under Bus Zone
1. Operation of this element is therefore completely dependent on the dynamic bus replica, which must be defined first. The
bus differential zones are defined using the path SETTINGS SYSTEM SETUP BUS. The CT Trouble element 1 detects
CT problems in any of the circuits actually connected to the differential zone defined as Bus Zone 1.
The CT TROUBLE ZONE 1 PICKUP setting specifies the differential current level that defines an abnormal bus state. If the dif-
ferential current in a given phase remains above this level for the time interval defined by the CT TROUBLE ZONE 1 DELAY
setting, CT Trouble is declared for the given phase by setting the appropriate FlexLogic™ output operand.
5
SETTING
CT TROUBLE ZONE 1
FUNCTION:
Disable = 0
Enabled, Alarm=1

SETTING
BUS ZONE 1A SOURCE:
Ia
PHASORS

Ib
Ic FLEXLOGIC OPERAND
SETTING SETTING OR CT TROUBLE 1 OP
CT TROUBLE ZONE 1 CT TROUBLE ZONE 1
PICKUP: DELAY:
FLEXLOGIC OPERANDS
SETTING RUN
BUS ZONE 1A STATUS: | Iad1 | > PICKUP PKP
DIFFERENTIAL CURRENTS

CT TROUBLE 1 OP A
Iad1

Off = 0 0
RUN
... | Ibd1 | > PICKUP PKP CT TROUBLE 1 OP B
Ibd1

0
SETTING RUN
BUS ZONE 1F SOURCE: | Icd1 | > PICKUP PKP CT TROUBLE 1 OP C
Icd1

Ia 0
PHASORS

Ib
Ic
836722A2.CDR

SETTING
BUS ZONE 1F STATUS:
Off = 0

Figure 5–63: CT TROUBLE SCHEME LOGIC

GE Multilin B30 Bus Differential Relay 5-111

 5.7 INPUTS/OUTPUTS 5 SETTINGS

5.7INPUTS/OUTPUTS 5.7.1 CONTACT INPUTS

PATH: SETTINGS INPUTS/OUTPUTS CONTACT INPUTS

CONTACT INPUTS

CONTACT INPUT H5a

CONTACT INPUT H5a ID: Range: up to 12 alphanumeric characters

MESSAGE
Cont Ip 1

CONTACT INPUT H5a Range: 0.0 to 16.0 ms in steps of 0.5

MESSAGE
DEBNCE TIME: 2.0 ms

CONTACT INPUT H5a Range: Disabled, Enabled

MESSAGE
EVENTS: Disabled
↓

CONTACT INPUT xxx

CONTACT INPUT
THRESHOLDS

Ips H5a,H5c,H6a,H6c Range: 17, 33, 84, 166 Vdc

MESSAGE

5 THRESHOLD: 33 Vdc

Ips H7a,H7c,H8a,H8c Range: 17, 33, 84, 166 Vdc

MESSAGE
THRESHOLD: 33 Vdc
↓

Ips xxx,xxx,xxx,xxx Range: 17, 33, 84, 166 Vdc

MESSAGE
THRESHOLD: 33 Vdc

The contact inputs menu contains configuration settings for each contact input as well as voltage thresholds for each group
of four contact inputs. Upon startup, the relay processor determines (from an assessment of the installed modules) which
contact inputs are available and then display settings for only those inputs.
An alphanumeric ID may be assigned to a contact input for diagnostic, setting, and event recording purposes. The CON-
TACT IP X On” (Logic 1) FlexLogic™ operand corresponds to contact input “X” being closed, while CONTACT IP X Off corre-
sponds to contact input “X” being open. The CONTACT INPUT DEBNCE TIME defines the time required for the contact to
overcome ‘contact bouncing’ conditions. As this time differs for different contact types and manufacturers, set it as a maxi-
mum contact debounce time (per manufacturer specifications) plus some margin to ensure proper operation. If CONTACT
INPUT EVENTS is set to “Enabled”, every change in the contact input state will trigger an event.

A raw status is scanned for all Contact Inputs synchronously at the constant rate of 0.5 ms as shown in the figure below.
The DC input voltage is compared to a user-settable threshold. A new contact input state must be maintained for a user-
settable debounce time in order for the B30 to validate the new contact state. In the figure below, the debounce time is set
at 2.5 ms; thus the 6th sample in a row validates the change of state (mark no. 1 in the diagram). Once validated (de-
bounced), the contact input asserts a corresponding FlexLogic™ operand and logs an event as per user setting.
A time stamp of the first sample in the sequence that validates the new state is used when logging the change of the con-
tact input into the Event Recorder (mark no. 2 in the diagram).
Protection and control elements, as well as FlexLogic™ equations and timers, are executed eight times in a power system
cycle. The protection pass duration is controlled by the frequency tracking mechanism. The FlexLogic™ operand reflecting
the debounced state of the contact is updated at the protection pass following the validation (marks no. 3 and 4 on the fig-
ure below). The update is performed at the beginning of the protection pass so all protection and control functions, as well
as FlexLogic™ equations, are fed with the updated states of the contact inputs.

5-112 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.7 INPUTS/OUTPUTS

The FlexLogic™ operand response time to the contact input change is equal to the debounce time setting plus up to one
protection pass (variable and depending on system frequency if frequency tracking enabled). If the change of state occurs
just after a protection pass, the recognition is delayed until the subsequent protection pass; that is, by the entire duration of
the protection pass. If the change occurs just prior to a protection pass, the state is recognized immediately. Statistically a
delay of half the protection pass is expected. Owing to the 0.5 ms scan rate, the time resolution for the input contact is
below 1msec.
For example, 8 protection passes per cycle on a 60 Hz system correspond to a protection pass every 2.1 ms. With a con-
tact debounce time setting of 3.0 ms, the FlexLogic™ operand-assert time limits are: 3.0 + 0.0 = 3.0 ms and 3.0 + 2.1 = 5.1
ms. These time limits depend on how soon the protection pass runs after the debouncing time.
Regardless of the contact debounce time setting, the contact input event is time-stamped with a 1 μs accuracy using the
time of the first scan corresponding to the new state (mark no. 2 below). Therefore, the time stamp reflects a change in the
DC voltage across the contact input terminals that was not accidental as it was subsequently validated using the debounce
timer. Keep in mind that the associated FlexLogic™ operand is asserted/de-asserted later, after validating the change.
The debounce algorithm is symmetrical: the same procedure and debounce time are used to filter the LOW-HIGH (marks
no.1, 2, 3, and 4 in the figure below) and HIGH-LOW (marks no. 5, 6, 7, and 8 below) transitions.
VOLTAGE
INPUT

USER-PROGRAMMABLE THRESHOLD

6
2 1 3 5
Time stamp of the first

5
TM
Time stamp of the first At this time, the The FlexLogic scan corresponding to the
At this time, the new
scan corresponding to new (HIGH) operand is going to new validated state is
(LOW) contact state is
the new validated state is contact state is be asserted at this logged in the SOE record
validated
logged in the SOE record validated protection pass

7
RAW CONTACT

The FlexLogicTM
operand is going to be
STATE

de-asserted at this
protection pass
DEBOUNCE TIME
(user setting)

4
The FlexLogicTM operand
DEBOUNCE TIME
The FlexLogicTM operand changes reflecting the
SCAN TIME (user setting)
changes reflecting the validated contact state
FLEXLOGICTM

(0.5 msec) validated contact state

OPERAND

PROTECTION PASS
(8 times a cycle controlled by the
frequency tracking mechanism)
842709A1.cdr

Figure 5–64: INPUT CONTACT DEBOUNCING MECHANISM AND TIME-STAMPING SAMPLE TIMING
Contact inputs are isolated in groups of four to allow connection of wet contacts from different voltage sources for each
group. The CONTACT INPUT THRESHOLDS determine the minimum voltage required to detect a closed contact input. This
value should be selected according to the following criteria: 17 for 24 V sources, 33 for 48 V sources, 84 for 110 to 125 V
sources and 166 for 250 V sources.
For example, to use contact input H5a as a status input from the breaker 52b contact to seal-in the trip relay and record it in
the Event Records menu, make the following settings changes:
CONTACT INPUT H5A ID: "Breaker Closed (52b)"
CONTACT INPUT H5A EVENTS: "Enabled"

Note that the 52b contact is closed when the breaker is open and open when the breaker is closed.

GE Multilin B30 Bus Differential Relay 5-113

 5.7 INPUTS/OUTPUTS 5 SETTINGS

5.7.2 VIRTUAL INPUTS

PATH: SETTINGS INPUTS/OUTPUTS VIRTUAL INPUTS VIRTUAL INPUT 1(64)

VIRTUAL INPUT 1 VIRTUAL INPUT 1 Range: Disabled, Enabled

FUNCTION: Disabled
VIRTUAL INPUT 1 ID: Range: Up to 12 alphanumeric characters
MESSAGE
Virt Ip 1
VIRTUAL INPUT 1 Range: Self-Reset, Latched
MESSAGE
TYPE: Latched
VIRTUAL INPUT 1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

There are 64 virtual inputs that can be individually programmed to respond to input signals from the keypad (Commands
menu) and communications protocols. All virtual input operands are defaulted to OFF = 0 unless the appropriate input sig-
nal is received. Virtual input states are preserved through a control power loss.
If the VIRTUAL INPUT x FUNCTION is to “Disabled”, the input will be forced to 'Off' (Logic 0) regardless of any attempt to alter
the input. If set to “Enabled”, the input operates as shown on the logic diagram and generates output FlexLogic™ operands
in response to received input signals and the applied settings.
There are two types of operation: Self-Reset and Latched. If VIRTUAL INPUT x TYPE is “Self-Reset”, when the input signal
transits from OFF = 0 to ON = 1, the output operand will be set to ON = 1 for only one evaluation of the FlexLogic™ equa-
tions and then return to OFF = 0. If set to “Latched”, the virtual input sets the state of the output operand to the same state
as the most recent received input, ON =1 or OFF = 0.
5 The “Self-Reset” operating mode generates the output operand for a single evaluation of the FlexLogic™
equations. If the operand is to be used anywhere other than internally in a FlexLogic™ equation, it will
NOTE
likely have to be lengthened in time. A FlexLogic™ timer with a delayed reset can perform this function.

SETTING
VIRTUAL INPUT 1
FUNCTION:
Disabled=0
Enabled=1 S
AND
Latch
“Virtual Input 1 to ON = 1”
SETTING
“Virtual Input 1 to OFF = 0” R VIRTUAL INPUT 1 ID:
AND
SETTING (Flexlogic Operand)
OR
Virt Ip 1
VIRTUAL INPUT 1
TYPE:
Latched AND
Self - Reset 827080A2.CDR

Figure 5–65: VIRTUAL INPUTS SCHEME LOGIC

5-114 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.7 INPUTS/OUTPUTS

5.7.3 CONTACT OUTPUTS

a) DIGITAL OUTPUTS
PATH: SETTINGS INPUTS/OUTPUTS CONTACT OUTPUTS CONTACT OUTPUT H1

CONTACT OUTPUT H1 CONTACT OUTPUT H1 ID Range: Up to 12 alphanumeric characters

Cont Op 1
OUTPUT H1 OPERATE: Range: FlexLogic™ operand
MESSAGE
Off
OUTPUT H1 SEAL-IN: Range: FlexLogic™ operand
MESSAGE
Off
CONTACT OUTPUT H1 Range: Disabled, Enabled
MESSAGE
EVENTS: Enabled

Upon startup of the relay, the main processor will determine from an assessment of the modules installed in the chassis
which contact outputs are available and present the settings for only these outputs.
An ID may be assigned to each contact output. The signal that can OPERATE a contact output may be any FlexLogic™
operand (virtual output, element state, contact input, or virtual input). An additional FlexLogic™ operand may be used to
SEAL-IN the relay. Any change of state of a contact output can be logged as an Event if programmed to do so.

For example, the trip circuit current is monitored by providing a current threshold detector in series with some Form-A con-
tacts (see the trip circuit example in the Digital Elements section). The monitor will set a flag (see the specifications for
Form-A). The name of the FlexLogic™ operand set by the monitor, consists of the output relay designation, followed by the
name of the flag; e.g. ‘Cont Op 1 IOn’ or ‘Cont Op 1 IOff’.
In most breaker control circuits, the trip coil is connected in series with a breaker auxiliary contact used to interrupt current 5
flow after the breaker has tripped, to prevent damage to the less robust initiating contact. This can be done by monitoring
an auxiliary contact on the breaker which opens when the breaker has tripped, but this scheme is subject to incorrect oper-
ation caused by differences in timing between breaker auxiliary contact change-of-state and interruption of current in the
trip circuit. The most dependable protection of the initiating contact is provided by directly measuring current in the tripping
circuit, and using this parameter to control resetting of the initiating relay. This scheme is often called ‘trip seal-in’.
This can be realized in the B30 using the ‘Cont Op 1 IOn’ FlexLogic™ operand to seal-in the contact output as follows:
CONTACT OUTPUT H1 ID: “Cont Op 1"
OUTPUT H1 OPERATE: any suitable FlexLogic™ operand
OUTPUT H1 SEAL-IN: “Cont Op 1 IOn”
CONTACT OUTPUT H1 EVENTS: “Enabled”

b) LATCHING OUTPUTS
PATH: SETTINGS INPUTS/OUTPUTS CONTACT OUTPUTS CONTACT OUTPUT H1a

CONTACT OUTPUT H1a OUTPUT H1a ID Range: Up to 12 alphanumeric characters

L-Cont Op 1
OUTPUT H1a OPERATE: Range: FlexLogic™ operand
MESSAGE
Off
OUTPUT H1a RESET: Range: FlexLogic™ operand
MESSAGE
Off
OUTPUT H1a TYPE: Range: Operate-dominant, Reset-dominant
MESSAGE
Operate-dominant
OUTPUT H1a EVENTS: Range: Disabled, Enabled
MESSAGE
Disabled

GE Multilin B30 Bus Differential Relay 5-115

 5.7 INPUTS/OUTPUTS 5 SETTINGS

The B30 latching output contacts are mechanically bi-stable and controlled by two separate (open and close) coils. As such
they retain their position even if the relay is not powered up. The relay recognizes all latching output contact cards and pop-
ulates the setting menu accordingly. On power up, the relay reads positions of the latching contacts from the hardware
before executing any other functions of the relay (such as protection and control features or FlexLogic™).
The latching output modules, either as a part of the relay or as individual modules, are shipped from the factory with all
latching contacts opened. It is highly recommended to double-check the programming and positions of the latching con-
tacts when replacing a module.
Since the relay asserts the output contact and reads back its position, it is possible to incorporate self-monitoring capabili-
ties for the latching outputs. If any latching outputs exhibits a discrepancy, the LATCHING OUTPUT ERROR self-test error is
declared. The error is signaled by the LATCHING OUT ERROR FlexLogic™ operand, event, and target message.
• OUTPUT H1a OPERATE: This setting specifies a FlexLogic™ operand to operate the ‘close coil’ of the contact. The
relay will seal-in this input to safely close the contact. Once the contact is closed and the RESET input is logic 0 (off),
any activity of the OPERATE input, such as subsequent chattering, will not have any effect. With both the OPERATE and
RESET inputs active (logic 1), the response of the latching contact is specified by the OUTPUT H1A TYPE setting.

• OUTPUT H1a RESET: This setting specifies a FlexLogic™ operand to operate the ‘trip coil’ of the contact. The relay
will seal-in this input to safely open the contact. Once the contact is opened and the OPERATE input is logic 0 (off), any
activity of the RESET input, such as subsequent chattering, will not have any effect. With both the OPERATE and RESET
inputs active (logic 1), the response of the latching contact is specified by the OUTPUT H1A TYPE setting.
• OUTPUT H1a TYPE: This setting specifies the contact response under conflicting control inputs; that is, when both the
OPERATE and RESET signals are applied. With both control inputs applied simultaneously, the contact will close if set to
“Operate-dominant” and will open if set to “Reset-dominant”.

Application Example 1:

5 A latching output contact H1a is to be controlled from two user-programmable pushbuttons (buttons number 1 and 2). The
following settings should be applied.
Program the Latching Outputs by making the following changes in the SETTINGS INPUTS/OUTPUTS CONTACT OUT-
PUTS CONTACT OUTPUT H1a menu (assuming an H4L module):

OUTPUT H1a OPERATE: “PUSHBUTTON 1 ON”

OUTPUT H1a RESET: “PUSHBUTTON 2 ON”

Program the pushbuttons by making the following changes in the PRODUCT SETUP USER-PROGRAMMABLE PUSHBUT-
TONS USER PUSHBUTTON 1 and USER PUSHBUTTON 2 menus:

PUSHBUTTON 1 FUNCTION: “Self-reset” PUSHBUTTON 2 FUNCTION: “Self-reset”

PUSHBTN 1 DROP-OUT TIME: “0.00 s” PUSHBTN 2 DROP-OUT TIME: “0.00 s”

Application Example 2:
A relay, having two latching contacts H1a and H1c, is to be programmed. The H1a contact is to be a Type-a contact, while
the H1c contact is to be a Type-b contact (Type-a means closed after exercising the operate input; Type-b means closed
after exercising the reset input). The relay is to be controlled from virtual outputs: VO1 to operate and VO2 to reset.
Program the Latching Outputs by making the following changes in the SETTINGS INPUTS/OUTPUTS CONTACT OUT-
PUTS CONTACT OUTPUT H1a and CONTACT OUTPUT H1c menus (assuming an H4L module):

OUTPUT H1a OPERATE: “VO1” OUTPUT H1c OPERATE: “VO2”

OUTPUT H1a RESET: “VO2” OUTPUT H1c RESET: “VO1”

Since the two physical contacts in this example are mechanically separated and have individual control inputs, they will not
operate at exactly the same time. A discrepancy in the range of a fraction of a maximum operating time may occur. There-
fore, a pair of contacts programmed to be a multi-contact relay will not guarantee any specific sequence of operation (such
as make before break). If required, the sequence of operation must be programmed explicitly by delaying some of the con-
trol inputs as shown in the next application example.

Application Example 3:
A make before break functionality must be added to the preceding example. An overlap of 20 ms is required to implement
this functionality as described below:

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 5 SETTINGS 5.7 INPUTS/OUTPUTS

Write the following FlexLogic™ equation (EnerVista UR Setup example shown):

Both timers (Timer 1 and Timer 2) should be set to 20 ms pickup and 0 ms dropout.
Program the Latching Outputs by making the following changes in the SETTINGS INPUTS/OUTPUTS CONTACT OUT-
PUTS CONTACT OUTPUT H1a and CONTACT OUTPUT H1c menus (assuming an H4L module):

OUTPUT H1a OPERATE: “VO1” OUTPUT H1c OPERATE: “VO2”

OUTPUT H1a RESET: “VO4” OUTPUT H1c RESET: “VO3”

Application Example 4:
A latching contact H1a is to be controlled from a single virtual output VO1. The contact should stay closed as long as VO1
is high, and should stay opened when VO1 is low. Program the relay as follows.
Write the following FlexLogic™ equation (EnerVista UR Setup example shown):

Program the Latching Outputs by making the following changes in the SETTINGS INPUTS/OUTPUTS CONTACT OUT-
PUTS CONTACT OUTPUT H1a menu (assuming an H4L module):

OUTPUT H1a OPERATE: “VO1”

OUTPUT H1a RESET: “VO2”

5.7.4 VIRTUAL OUTPUTS

PATH: SETTINGS INPUTS/OUTPUTS VIRTUAL OUTPUTS VIRTUAL OUTPUT 1(96)

VIRTUAL OUTPUT 1 VIRTUAL OUTPUT 1 ID Range: Up to 12 alphanumeric characters

Virt Op 1
VIRTUAL OUTPUT 1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

There are 96 virtual outputs that may be assigned via FlexLogic™. If not assigned, the output will be forced to ‘OFF’ (Logic
0). An ID may be assigned to each virtual output. Virtual outputs are resolved in each pass through the evaluation of the
FlexLogic™ equations. Any change of state of a virtual output can be logged as an event if programmed to do so.
For example, if Virtual Output 1 is the trip signal from FlexLogic™ and the trip relay is used to signal events, the settings
would be programmed as follows:
VIRTUAL OUTPUT 1 ID: "Trip"
VIRTUAL OUTPUT 1 EVENTS: "Disabled"

GE Multilin B30 Bus Differential Relay 5-117

 5.7 INPUTS/OUTPUTS 5 SETTINGS

5.7.5 REMOTE DEVICES

a) REMOTE INPUTS/OUTPUTS OVERVIEW

Remote inputs and outputs provide a means of exchanging digital state information between Ethernet-networked devices.
The IEC 61850 GSSE (Generic Substation State Event) and GOOSE (Generic Object Oriented Substation Event) stan-
dards are used.
The IEC 61850 specification requires that communications between devices be implemented on Ethernet.
For UR-series relays, Ethernet communications is provided only all CPU modules except type 9E.
NOTE

The sharing of digital point state information between GSSE/GOOSE equipped relays is essentially an extension to Flex-
Logic™, allowing distributed FlexLogic™ by making operands available to/from devices on a common communications net-
work. In addition to digital point states, GSSE/GOOSE messages identify the originator of the message and provide other
information required by the communication specification. All devices listen to network messages and capture data only from
messages that have originated in selected devices.
IEC 61850 GSSE messages are compatible with UCA GOOSE messages and contain a fixed set of digital points. IEC
61850 GOOSE messages can, in general, contain any configurable data items. When used by the remote input/output fea-
ture, IEC 61850 GOOSE messages contain the same data as GSSE messages.
Both GSSE and GOOSE messages are designed to be short, reliable, and high priority. GOOSE messages have additional
advantages over GSSE messages due to their support of VLAN (virtual LAN) and Ethernet priority tagging functionality.
The GSSE message structure contains space for 128 bit pairs representing digital point state information. The IEC 61850
specification provides 32 “DNA” bit pairs that represent the state of two pre-defined events and 30 user-defined events. All
remaining bit pairs are “UserSt” bit pairs, which are status bits representing user-definable events. The B30 implementation
provides 32 of the 96 available UserSt bit pairs.

5 The IEC 61850 specification includes features that are used to cope with the loss of communication between transmitting
and receiving devices. Each transmitting device will send a GSSE/GOOSE message upon a successful power-up, when
the state of any included point changes, or after a specified interval (the default update time) if a change-of-state has not
occurred. The transmitting device also sends a ‘hold time’ which is set greater than three times the programmed default
time required by the receiving device.
Receiving devices are constantly monitoring the communications network for messages they require, as recognized by the
identification of the originating device carried in the message. Messages received from remote devices include the mes-
sage time allowed to live. The receiving relay sets a timer assigned to the originating device to this time interval, and if it
has not received another message from this device at time-out, the remote device is declared to be non-communicating, so
it will use the programmed default state for all points from that specific remote device. If a message is received from a
remote device before the time allowed to live expires, all points for that device are updated to the states contained in the
message and the hold timer is restarted. The status of a remote device, where “Offline” indicates non-communicating, can
be displayed.
The remote input/output facility provides for 32 remote inputs and 64 remote outputs.

b) LOCAL DEVICES: ID OF DEVICE FOR TRANSMITTING GSSE/GOOSE MESSAGES

In a B30 relay, the device ID that identifies the originator of the message is programmed in the SETTINGS PRODUCT SETUP
INSTALLATION RELAY NAME setting.

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 5 SETTINGS 5.7 INPUTS/OUTPUTS

c) REMOTE DEVICES: ID OF DEVICE FOR RECEIVING GSSE/GOOSE MESSAGES

PATH: SETTINGS INPUTS/OUTPUTS REMOTE DEVICES REMOTE DEVICE 1(16)

REMOTE DEVICE 1 REMOTE DEVICE 1 ID: Range: up to 20 alphanumeric characters

Remote Device 1
REMOTE DEVICE 1 Range: 0 to 4095 in steps of 1
MESSAGE
VLAN ID: 0
REMOTE DEVICE 1 Range: 0 to 16383 in steps of 1
MESSAGE
ETYPE APPID: 0

Sixteen remote devices, numbered from 1 to 16, can be selected for setting purposes. A receiving relay must be pro-
grammed to capture messages from only those originating remote devices of interest. This setting is used to select specific
remote devices by entering (bottom row) the exact identification (ID) assigned to those devices.
The REMOTE DEVICE 1(16) VLAN ID and REMOTE DEVICE 1(16) ETYPE APPID settings are only used with GOOSE messages;
they are not applicable to GSSE messages. The REMOTE DEVICE 1(16) VLAN ID setting identifies the virtual LAN on which the
remote device is sending the GOOSE message. The REMOTE DEVICE 1(16) ETYPE APPID setting identifies the Ethernet appli-
cation identification in the GOOSE message. These settings should match the corresponding settings on the sending
device.

5.7.6 REMOTE INPUTS

PATH: SETTINGS INPUTS/OUTPUTS REMOTE INPUTS REMOTE INPUT 1(32)

REMOTE INPUT 1 REMOTE INPUT 1 ID: Range: up to 12 alphanumeric characters

Remote Ip 1 5
REMOTE IN 1 DEVICE: Range: 1 to 16 inclusive
MESSAGE
Remote Device 1
REMOTE IN 1 BIT Range: None, DNA-1 to DNA-32, UserSt-1 to UserSt-32
MESSAGE
PAIR: None
REMOTE IN 1 DEFAULT Range: On, Off, Latest/On, Latest/Off
MESSAGE
STATE: Off
REMOTE IN 1 Range: Disabled, Enabled
MESSAGE
EVENTS: Disabled

Remote Inputs which create FlexLogic™ operands at the receiving relay, are extracted from GSSE/GOOSE messages
originating in remote devices. The relay provides 32 remote inputs, each of which can be selected from a list consisting of
64 selections: DNA-1 through DNA-32 and UserSt-1 through UserSt-32. The function of DNA inputs is defined in the IEC
61850 specification and is presented in the IEC 61850 DNA Assignments table in the Remote Outputs section. The function
of UserSt inputs is defined by the user selection of the FlexLogic™ operand whose state is represented in the GSSE/
GOOSE message. A user must program a DNA point from the appropriate FlexLogic™ operand.
Remote Input 1 must be programmed to replicate the logic state of a specific signal from a specific remote device for local
use. This programming is performed via the three settings shown above.
The REMOTE INPUT 1 ID setting allows the user to assign descriptive text to the remote input. The REMOTE IN 1 DEVICE setting
selects the number (1 to 16) of the remote device which originates the required signal, as previously assigned to the remote
device via the setting REMOTE DEVICE NN ID (see the Remote Devices section). REMOTE IN 1 BIT PAIR selects the specific bits
of the GSSE/GOOSE message required.
The REMOTE IN 1 DEFAULT STATE setting selects the logic state for this point if the local relay has just completed startup or
the remote device sending the point is declared to be non-communicating. The following choices are available:
• Setting REMOTE IN 1 DEFAULT STATE to “On” value defaults the input to Logic 1.
• Setting REMOTE IN 1 DEFAULT STATE to “Off” value defaults the input to Logic 0.

GE Multilin B30 Bus Differential Relay 5-119

 5.7 INPUTS/OUTPUTS 5 SETTINGS

• Setting REMOTE IN 1 DEFAULT STATE to “Latest/On” freezes the input in case of lost communications. If the latest state is
not known, such as after relay power-up but before the first communication exchange, the input will default to Logic 1.
When communication resumes, the input becomes fully operational.
• Setting REMOTE IN 1 DEFAULT STATE to “Latest/Off” freezes the input in case of lost communications. If the latest state is
not known, such as after relay power-up but before the first communication exchange, the input will default to Logic 0.
When communication resumes, the input becomes fully operational.
For additional information on GSSE/GOOOSE messaging, refer to the Remote Devices section in this chap-
ter.
NOTE

5.7.7 REMOTE OUTPUTS

a) DNA BIT PAIRS

PATH: SETTINGS INPUTS/OUTPUTS REMOTE OUTPUTS DNA BIT PAIRS REMOTE OUPUTS DNA- 1(32) BIT PAIR

REMOTE OUTPUTS DNA- 1 OPERAND: Range: FlexLogic™ operand

DNA- 1 BIT PAIR Off
DNA- 1 EVENTS: Range: Disabled, Enabled
MESSAGE
Disabled

Remote outputs (1 to 32) are FlexLogic™ operands inserted into GSSE/GOOSE messages that are transmitted to remote
devices on a LAN. Each digital point in the message must be programmed to carry the state of a specific FlexLogic™ oper-
and. The above operand setting represents a specific DNA function (as shown in the following table) to be transmitted.

Table 5–18: IEC 61850 DNA ASSIGNMENTS

5 DNA IEC 61850 DEFINITION FLEXLOGIC™ OPERAND
1 Test IEC 61850 TEST MODE
2 ConfRev IEC 61850 CONF REV

b) USERST BIT PAIRS

PATH: SETTINGS INPUTS/OUTPUTS REMOTE OUTPUTS UserSt BIT PAIRS REMOTE OUTPUTS UserSt- 1(32) BIT PAIR

REMOTE OUTPUTS UserSt- 1 OPERAND: Range: FlexLogic™ operand

UserSt- 1 BIT PAIR Off
UserSt- 1 EVENTS: Range: Disabled, Enabled
MESSAGE
Disabled

Remote outputs 1 to 32 originate as GSSE/GOOSE messages to be transmitted to remote devices. Each digital point in the
message must be programmed to carry the state of a specific FlexLogic™ operand. The setting above is used to select the
operand which represents a specific UserSt function (as selected by the user) to be transmitted.
The following setting represents the time between sending GSSE/GOOSE messages when there has been no change of
state of any selected digital point. This setting is located in the PRODUCT SETUP COMMUNICATIONS IEC 61850 PROTO-
COL GSSE/GOOSE CONFIGURATION settings menu.

DEFAULT GSSE/GOOSE Range: 1 to 60 s in steps of 1

UPDATE TIME: 60 s
The following setting determines whether remote input/output data is transported using IEC 61850 GSSE or IEC 61850
GOOSE messages. If GOOSE is selected, the VLAN and APPID settings should be set accordingly. If GSSE is selected,
the VLAN and APPID settings are not relevant. This setting is located in the PRODUCT SETUP COMMUNICATIONS IEC
61850 PROTOCOL GSSE/GOOSE CONFIGURATION menu.

REMOTE I/O TRANSFER Range: GOOSE, GSSE, None

METHOD: GSSE
For more information on GSSE/GOOSE messaging, refer to Remote Inputs/Outputs Overview in the
Remote Devices section.
NOTE

5-120 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.7 INPUTS/OUTPUTS

5.7.8 RESETTING

PATH: SETTINGS INPUTS/OUTPUTS RESETTING

RESETTING RESET OPERAND: Range: FlexLogic™ operand

Off

Some events can be programmed to latch the faceplate LED event indicators and the target message on the display. Once
set, the latching mechanism will hold all of the latched indicators or messages in the set state after the initiating condition
has cleared until a RESET command is received to return these latches (not including FlexLogic™ latches) to the reset
state. The RESET command can be sent from the faceplate Reset button, a remote device via a communications channel,
or any programmed operand.
When the RESET command is received by the relay, two FlexLogic™ operands are created. These operands, which are
stored as events, reset the latches if the initiating condition has cleared. The three sources of RESET commands each cre-
ate the RESET OP FlexLogic™ operand. Each individual source of a RESET command also creates its individual operand
RESET OP (PUSHBUTTON), RESET OP (COMMS) or RESET OP (OPERAND) to identify the source of the command. The setting
shown above selects the operand that will create the RESET OP (OPERAND) operand.

5.7.9 DIRECT INPUTS/OUTPUTS

a) DIRECT INPUTS
PATH: SETTINGS INPUTS/OUTPUTS DIRECT INPUTS DIRECT INPUT 1(32)

DIRECT INPUT 1 DIRECT INPUT 1 Range: up to 12 alphanumeric characters

NAME: Dir Ip 1

MESSAGE
DIRECT INPUT 1 Range: 1 to 16 5
DEVICE ID: 1
DIRECT INPUT 1 Range: 1 to 32
MESSAGE
BIT NUMBER: 1
DIRECT INPUT 1 Range: On, Off, Latest/On, Latest/Off
MESSAGE
DEFAULT STATE: Off
DIRECT INPUT 1 Range: Enabled, Disabled
MESSAGE
EVENTS: Disabled

These settings specify how the direct input information is processed. The DIRECT INPUT 1 NAME setting allows the user to
assign a descriptive name to the direct input. The DIRECT INPUT DEVICE ID represents the source of this direct input. The
specified direct input is driven by the device identified here.
The DIRECT INPUT 1 BIT NUMBER is the bit number to extract the state for this direct input. Direct Input x is driven by the bit
identified here as DIRECT INPUT 1 BIT NUMBER. This corresponds to the direct output number of the sending device.
The DIRECT INPUT 1 DEFAULT STATE represents the state of the direct input when the associated direct device is offline. The
following choices are available:
• Setting DIRECT INPUT 1 DEFAULT STATE to “On” value defaults the input to Logic 1.
• Setting DIRECT INPUT 1 DEFAULT STATE to “Off” value defaults the input to Logic 0.
• Setting DIRECT INPUT 1 DEFAULT STATE to “Latest/On” freezes the input in case of lost communications. If the latest
state is not known, such as after relay power-up but before the first communication exchange, the input will default to
Logic 1. When communication resumes, the input becomes fully operational.
• Setting DIRECT INPUT 1 DEFAULT STATE to “Latest/Off” freezes the input in case of lost communications. If the latest
state is not known, such as after relay power-up but before the first communication exchange, the input will default to
Logic 0. When communication resumes, the input becomes fully operational.

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 5.7 INPUTS/OUTPUTS 5 SETTINGS

b) DIRECT OUTPUTS
PATH: SETTINGS INPUTS/OUTPUTS DIRECT OUTPUTS DIRECT OUTPUT 1(32)

DIRECT OUTPUT 1 DIRECT OUT 1 NAME: Range: up to 12 alphanumeric characters

Dir Out 1
DIRECT OUT 1 OPERAND: Range: FlexLogic™ operand
MESSAGE
Off
DIRECT OUTPUT 1 Range: Enabled, Disabled
MESSAGE
EVENTS: Disabled

The DIRECT OUT 1 NAME setting allows the user to assign a descriptive name to the direct output. The DIR OUT 1 OPERAND is
the FlexLogic™ operand that determines the state of this direct output.

c) APPLICATION EXAMPLES
The examples introduced in the earlier Direct Inputs/Outputs section (part of the Product Setup section) direct inputs/out-
puts are continued below to illustrate usage of the direct inputs and outputs.
EXAMPLE 1: EXTENDING INPUT/OUTPUT CAPABILITIES OF A B30 RELAY
Consider an application that requires additional quantities of digital inputs and/or output contacts and/or lines of program-
mable logic that exceed the capabilities of a single UR-series chassis. The problem is solved by adding an extra UR-series
IED, such as the C30, to satisfy the additional inputs/outputs and programmable logic requirements. The two IEDs are con-
nected via single-channel digital communication cards as shown below.

TX1

5 UR IED 1
RX1

TX1
UR IED 2
RX1

Figure 5–66: INPUT/OUTPUT EXTENSION VIA DIRECT INPUTS/OUTPUTS

Assume Contact Input 1 from UR IED 2 is to be used by UR IED 1. The following settings should be applied (Direct Input 5
and bit number 12 are used, as an example):
UR IED 1: DIRECT INPUT 5 DEVICE ID = “2” UR IED 2: DIRECT OUT 12 OPERAND = “Cont Ip 1 On”
DIRECT INPUT 5 BIT NUMBER = “12”

The Cont Ip 1 On operand of UR IED 2 is now available in UR IED 1 as DIRECT INPUT 5 ON.
EXAMPLE 2: INTERLOCKING BUSBAR PROTECTION
A simple interlocking busbar protection scheme can be accomplished by sending a blocking signal from downstream
devices, say 2, 3 and 4, to the upstream device that monitors a single incomer of the busbar, as shown in the figure below.

UR IED 1 BLOCK

UR IED 2 UR IED 3 UR IED 4

842712A1.CDR

Figure 5–67: SAMPLE INTERLOCKING BUSBAR PROTECTION SCHEME

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 5 SETTINGS 5.7 INPUTS/OUTPUTS

Assume that Phase Instantaneous Overcurrent 1 is used by Devices 2, 3, and 4 to block Device 1. If not blocked, Device 1
would trip the bus upon detecting a fault and applying a short coordination time delay.
The following settings should be applied (assume Bit 3 is used by all 3 devices to sent the blocking signal and Direct Inputs
7, 8, and 9 are used by the receiving device to monitor the three blocking signals):
UR IED 2: DIRECT OUT 3 OPERAND: "PHASE IOC1 OP"

UR IED 3: DIRECT OUT 3 OPERAND: "PHASE IOC1 OP"

UR IED 4: DIRECT OUT 3 OPERAND: "PHASE IOC1 OP"

UR IED 1: DIRECT INPUT 7 DEVICE ID: "2"

DIRECT INPUT 7 BIT NUMBER: "3"
DIRECT INPUT 7 DEFAULT STATE: select "On" for security, select "Off" for dependability

DIRECT INPUT 8 DEVICE ID: "3"

DIRECT INPUT 8 BIT NUMBER: "3"
DIRECT INPUT 8 DEFAULT STATE: select "On" for security, select "Off" for dependability

DIRECT INPUT 9 DEVICE ID: "4"

DIRECT INPUT 9 BIT NUMBER: "3"
DIRECT INPUT 9 DEFAULT STATE: select "On" for security, select "Off" for dependability
Now the three blocking signals are available in UR IED 1 as DIRECT INPUT 7 ON, DIRECT INPUT 8 ON, and DIRECT INPUT 9
ON. Upon losing communications or a device, the scheme is inclined to block (if any default state is set to “On”), or to trip
the bus on any overcurrent condition (all default states set to “Off”).
EXAMPLE 2: PILOT-AIDED SCHEMES
Consider a three-terminal line protection application shown in the figure below. 5
UR IED 1 UR IED 2

UR IED 3
842713A1.CDR

Figure 5–68: THREE-TERMINAL LINE APPLICATION

Assume the Hybrid Permissive Overreaching Transfer Trip (Hybrid POTT) scheme is applied using the architecture shown
below. The scheme output operand HYB POTT TX1 is used to key the permission.

TX1 RX1 RX2

UR IED 1 UR IED 2
RX1 TX1 TX2

RX1
UR IED 3
TX1
842714A1.CDR

Figure 5–69: SINGLE-CHANNEL OPEN-LOOP CONFIGURATION

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 5.7 INPUTS/OUTPUTS 5 SETTINGS

In the above architecture, Devices 1 and 3 do not communicate directly. Therefore, Device 2 must act as a ‘bridge’. The fol-
lowing settings should be applied:
UR IED 1: DIRECT OUT 2 OPERAND: "HYB POTT TX1"
DIRECT INPUT 5 DEVICE ID: "2"
DIRECT INPUT 5 BIT NUMBER: "2" (this is a message from IED 2)
DIRECT INPUT 6 DEVICE ID: "2"
DIRECT INPUT 6 BIT NUMBER: "4" (effectively, this is a message from IED 3)
UR IED 3: DIRECT OUT 2 OPERAND: "HYB POTT TX1"
DIRECT INPUT 5 DEVICE ID: "2"
DIRECT INPUT 5 BIT NUMBER: "2" (this is a message from IED 2)
DIRECT INPUT 6 DEVICE ID: "2"
DIRECT INPUT 6 BIT NUMBER: "3" (effectively, this is a message from IED 1)
UR IED 2: DIRECT INPUT 5 DEVICE ID: "1"
DIRECT INPUT 5 BIT NUMBER: "2"
DIRECT INPUT 6 DEVICE ID: "3"
DIRECT INPUT 6 BIT NUMBER: "2"
DIRECT OUT 2 OPERAND: "HYB POTT TX1"
DIRECT OUT 3 OPERAND: "DIRECT INPUT 5" (forward a message from 1 to 3)
DIRECT OUT 4 OPERAND: "DIRECT INPUT 6" (forward a message from 3 to 1)
Signal flow between the three IEDs is shown in the figure below:

UR IED 1 UR IED 2

5
DIRECT OUT 2 = HYB POTT TX1 DIRECT INPUT 5
DIRECT INPUT 5 DIRECT OUT 2 = HYB POTT TX1
DIRECT INPUT 6 DIRECT OUT 4 = DIRECT INPUT 6
DIRECT OUT 3 = DIRECT INPUT 5
DIRECT INPUT 6

UR IED 3 DIRECT INPUT 5

DIRECT INPUT 6
DIRECT OUT 2 = HYB POTT TX1

842717A1.CDR

Figure 5–70: SIGNAL FLOW FOR DIRECT INPUT/OUTPUT EXAMPLE 3

In three-terminal applications, both the remote terminals must grant permission to trip. Therefore, at each terminal, Direct
Inputs 5 and 6 should be ANDed in FlexLogic™ and the resulting operand configured as the permission to trip (HYB POTT
RX1 setting).

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 5 SETTINGS 5.8 TRANSDUCER INPUTS/OUTPUTS

5.8TRANSDUCER INPUTS/OUTPUTS 5.8.1 DCMA INPUTS

PATH: SETTINGS TRANSDUCER I/O DCMA INPUTS DCMA INPUT H1(U8)

DCMA INPUT H1 DCMA INPUT H1 Range: Disabled, Enabled

FUNCTION: Disabled
DCMA INPUT H1 ID: Range: up to 20 alphanumeric characters
MESSAGE
DCMA Ip 1
DCMA INPUT H1 Range: 6 alphanumeric characters
MESSAGE
UNITS: μA
DCMA INPUT H1 Range: 0 to –1 mA, 0 to +1 mA, –1 to +1 mA, 0 to 5 mA,
MESSAGE 0 to 10mA, 0 to 20 mA, 4 to 20 mA
RANGE: 0 to -1 mA
DCMA INPUT H1 MIN Range: –9999.999 to +9999.999 in steps of 0.001
MESSAGE
VALUE: 0.000
DCMA INPUT H1 MAX Range: –9999.999 to +9999.999 in steps of 0.001
MESSAGE
VALUE: 0.000

Hardware and software is provided to receive signals from external transducers and convert these signals into a digital for-
mat for use as required. The relay will accept inputs in the range of –1 to +20 mA DC, suitable for use with most common
transducer output ranges; all inputs are assumed to be linear over the complete range. Specific hardware details are con-
tained in Chapter 3.
Before the dcmA input signal can be used, the value of the signal measured by the relay must be converted to the range
and quantity of the external transducer primary input parameter, such as DC voltage or temperature. The relay simplifies
this process by internally scaling the output from the external transducer and displaying the actual primary parameter.
5
dcmA input channels are arranged in a manner similar to CT and VT channels. The user configures individual channels
with the settings shown here.
The channels are arranged in sub-modules of two channels, numbered from 1 through 8 from top to bottom. On power-up,
the relay will automatically generate configuration settings for every channel, based on the order code, in the same general
manner that is used for CTs and VTs. Each channel is assigned a slot letter followed by the row number, 1 through 8 inclu-
sive, which is used as the channel number. The relay generates an actual value for each available input channel.
Settings are automatically generated for every channel available in the specific relay as shown above for the first channel of
a type 5F transducer module installed in slot H.
The function of the channel may be either “Enabled” or “Disabled”. If “Disabled”, no actual values are created for the chan-
nel. An alphanumeric “ID” is assigned to each channel; this ID will be included in the channel actual value, along with the
programmed units associated with the parameter measured by the transducer, such as volts, °C, megawatts, etc. This ID is
also used to reference the channel as the input parameter to features designed to measure this type of parameter. The
DCMA INPUT H1 RANGE setting specifies the mA DC range of the transducer connected to the input channel.

The DCMA INPUT H1 MIN VALUE and DCMA INPUT H1 MAX VALUE settings are used to program the span of the transducer in
primary units. For example, a temperature transducer might have a span from 0 to 250°C; in this case the DCMA INPUT H1
MIN VALUE value is “0” and the DCMA INPUT H1 MAX VALUE value is “250”. Another example would be a watts transducer with
a span from –20 to +180 MW; in this case the DCMA INPUT H1 MIN VALUE value would be “–20” and the DCMA INPUT H1 MAX
VALUE value “180”. Intermediate values between the min and max values are scaled linearly.

GE Multilin B30 Bus Differential Relay 5-125

 5.8 TRANSDUCER INPUTS/OUTPUTS 5 SETTINGS

5.8.2 RTD INPUTS

PATH: SETTINGS TRANSDUCER I/O RTD INPUTS RTD INPUT H1(U8)

RTD INPUT H1 RTD INPUT H1 Range: Disabled, Enabled

FUNCTION: Disabled
RTD INPUT H1 ID: Range: Up to 20 alphanumeric characters
MESSAGE
RTD Ip 1
RTD INPUT H1 TYPE: Range: 100Ω Nickel, 10Ω Copper, 100Ω Platinum,
MESSAGE 120Ω Nickel
100Ω Nickel

Hardware and software is provided to receive signals from external resistance temperature detectors and convert these
signals into a digital format for use as required. These channels are intended to be connected to any of the RTD types in
common use. Specific hardware details are contained in Chapter 3.
RTD input channels are arranged in a manner similar to CT and VT channels. The user configures individual channels with
the settings shown here.
The channels are arranged in sub-modules of two channels, numbered from 1 through 8 from top to bottom. On power-up,
the relay will automatically generate configuration settings for every channel, based on the order code, in the same general
manner that is used for CTs and VTs. Each channel is assigned a slot letter followed by the row number, 1 through 8 inclu-
sive, which is used as the channel number. The relay generates an actual value for each available input channel.
Settings are automatically generated for every channel available in the specific relay as shown above for the first channel of
a type 5C transducer module installed in slot H.
The function of the channel may be either “Enabled” or “Disabled”. If “Disabled”, there will not be an actual value created for
5 the channel. An alphanumeric ID is assigned to the channel; this ID will be included in the channel actual values. It is also
used to reference the channel as the input parameter to features designed to measure this type of parameter. Selecting the
type of RTD connected to the channel configures the channel.
Actions based on RTD overtemperature, such as trips or alarms, are done in conjunction with the FlexElements™ feature.
In FlexElements™, the operate level is scaled to a base of 100°C. For example, a trip level of 150°C is achieved by setting
the operate level at 1.5 pu. FlexElement™ operands are available to FlexLogic™ for further interlocking or to operate an
output contact directly.

5.8.3 DCMA OUTPUTS

PATH: SETTINGS TRANSDUCER I/O DCMA OUTPUTS DCMA OUTPUT H1(U8)

DCMA OUTPUT H1 DCMA OUTPUT H1 Range: Off, any analog actual value parameter
SOURCE: Off
DCMA OUTPUT H1 Range: –1 to 1 mA, 0 to 1 mA, 4 to 20 mA
MESSAGE
RANGE: –1 to 1 mA
DCMA OUTPUT H1 Range: –90.000 to 90.000 pu in steps of 0.001
MESSAGE
MIN VAL: 0.000 pu
DCMA OUTPUT H1 Range: –90.000 to 90.000 pu in steps of 0.001
MESSAGE
MAX VAL: 1.000 pu

Hardware and software is provided to generate dcmA signals that allow interfacing with external equipment. Specific hard-
ware details are contained in Chapter 3. The dcmA output channels are arranged in a manner similar to transducer input or
CT and VT channels. The user configures individual channels with the settings shown below.
The channels are arranged in sub-modules of two channels, numbered 1 through 8 from top to bottom. On power-up, the
relay automatically generates configuration settings for every channel, based on the order code, in the same manner used
for CTs and VTs. Each channel is assigned a slot letter followed by the row number, 1 through 8 inclusive, which is used as
the channel number.
Both the output range and a signal driving a given output are user-programmable via the following settings menu (an exam-
ple for channel M5 is shown).

5-126 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.8 TRANSDUCER INPUTS/OUTPUTS

The relay checks the driving signal (x in equations below) for the minimum and maximum limits, and subsequently re-
scales so the limits defined as MIN VAL and MAX VAL match the output range of the hardware defined as RANGE. The follow-
ing equation is applied:

⎧ I min if x < MIN VAL

⎪
I out = ⎨ I max if x > MAX VAL (EQ 5.13)
⎪
⎩ k ( x – MIN VAL ) + I min otherwise

where: x is a driving signal specified by the SOURCE setting

Imin and Imax are defined by the RANGE setting
k is a scaling constant calculated as:
I max – I min
k = ------------------------------------------------
- (EQ 5.14)
MAX VAL – MIN VAL

The feature is intentionally inhibited if the MAX VAL and MIN VAL settings are entered incorrectly, e.g. when MAX VAL – MIN
VAL< 0.1 pu. The resulting characteristic is illustrated in the following figure.

Imax
OUTPUT CURRENT

5
Imin
DRIVING SIGNAL
MIN VAL MAX VAL 842739A1.CDR

Figure 5–71: DCMA OUTPUT CHARACTERISTIC

The dcmA output settings are described below.
• DCMA OUTPUT H1 SOURCE: This setting specifies an internal analog value to drive the analog output. Actual values
(FlexAnalog parameters) such as power, current amplitude, voltage amplitude, power factor, etc. can be configured as
sources driving dcmA outputs. Refer to Appendix A for a complete list of FlexAnalog parameters.
• DCMA OUTPUT H1 RANGE: This setting allows selection of the output range. Each dcmA channel may be set inde-
pendently to work with different ranges. The three most commonly used output ranges are available.
• DCMA OUTPUT H1 MIN VAL: This setting allows setting the minimum limit for the signal that drives the output. This
setting is used to control the mapping between an internal analog value and the output current (see the following
examples). The setting is entered in per-unit values. The base units are defined in the same manner as the FlexEle-
ment™ base units.
• DCMA OUTPUT H1 MAX VAL: This setting allows setting the maximum limit for the signal that drives the output. This
setting is used to control the mapping between an internal analog value and the output current (see the following
examples). The setting is entered in per-unit values. The base units are defined in the same manner as the FlexEle-
ment™ base units.
The DCMA OUTPUT H1 MIN VAL and DCMA OUTPUT H1 MAX VAL settings are ignored for power factor base units (i.e. if
the DCMA OUTPUT H1 SOURCE is set to FlexAnalog value based on power factor measurement).
NOTE

Three application examples are described below.

GE Multilin B30 Bus Differential Relay 5-127

 5.8 TRANSDUCER INPUTS/OUTPUTS 5 SETTINGS

EXAMPLE 1:
A three phase active power on a 13.8 kV system measured via UR-series relay source 1 is to be monitored by the dcmA H1
output of the range of –1 to 1 mA. The following settings are applied on the relay: CT ratio = 1200:5, VT secondary 115, VT
connection is delta, and VT ratio = 120. The nominal current is 800 A primary and the nominal power factor is 0.90. The
power is to be monitored in both importing and exporting directions and allow for 20% overload compared to the nominal.
The nominal three-phase power is:

P = 3 × 13.8 kV × 0.8 kA × 0.9 = 17.21 MW (EQ 5.15)

The three-phase power with 20% overload margin is:

P max = 1.2 × 17.21 MW = 20.65 MW (EQ 5.16)

The base unit for power (refer to the FlexElements section in this chapter for additional details) is:
P BASE = 115 V × 120 × 1.2 kA = 16.56 MW (EQ 5.17)

The minimum and maximum power values to be monitored (in pu) are:
20.65 MW = – 1.247 pu, maximum power = 20.65 MW- = 1.247 pu
minimum power = –------------------------------ -------------------------- (EQ 5.18)
16.56 MW 16.56 MW
The following settings should be entered:
DCMA OUTPUT H1 SOURCE: “SRC 1 P”
DCMA OUTPUT H1 RANGE: “–1 to 1 mA”
DCMA OUTPUT H1 MIN VAL: “–1.247 pu”
DCMA OUTPUT H1 MAX VAL: “1.247 pu”
5 With the above settings, the output will represent the power with the scale of 1 mA per 20.65 MW. The worst-case error for
this application can be calculated by superimposing the following two sources of error:
• ±0.5% of the full scale for the analog output module, or ± 0.005 × ( 1 – ( – 1 ) ) × 20.65 MW = ± 0.207 MW
• ±1% of reading error for the active power at power factor of 0.9
For example at the reading of 20 MW, the worst-case error is 0.01 × 20 MW + 0.207 MW = 0.407 MW.
EXAMPLE 2:
The phase A current (true RMS value) is to be monitored via the H2 current output working with the range from 4 to 20 mA.
The CT ratio is 5000:5 and the maximum load current is 4200 A. The current should be monitored from 0 A upwards, allow-
ing for 50% overload.
The phase current with the 50% overload margin is:
I max = 1.5 × 4.2 kA = 6.3 kA (EQ 5.19)

The base unit for current (refer to the FlexElements section in this chapter for additional details) is:
I BASE = 5 kA (EQ 5.20)

The minimum and maximum power values to be monitored (in pu) are:

minimum current = 0 kA- = 0 pu, maximum current = 6.3 kA- = 1.26 pu

----------- ---------------- (EQ 5.21)
5 kA 5 kA
The following settings should be entered:
DCMA OUTPUT H2 SOURCE: “SRC 1 Ia RMS”
DCMA OUTPUT H2 RANGE: “4 to 20 mA”
DCMA OUTPUT H2 MIN VAL: “0.000 pu”
DCMA OUTPUT H2 MAX VAL: “1.260 pu”

The worst-case error for this application could be calculated by superimposing the following two sources of error:
• ±0.5% of the full scale for the analog output module, or ± 0.005 × ( 20 – 4 ) × 6.3 kA = ± 0.504 kA
• ±0.25% of reading or ±0.1% of rated (whichever is greater) for currents between 0.1 and 2.0 of nominal

5-128 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.8 TRANSDUCER INPUTS/OUTPUTS

For example, at the reading of 4.2 kA, the worst-case error is max(0.0025 × 4.2 kA, 0.001 × 5 kA) + 0.504 kA = 0.515 kA.
EXAMPLE 3:
A positive-sequence voltage on a 400 kV system measured via Source 2 is to be monitored by the dcmA H3 output with a
range of 0 to 1 mA. The VT secondary setting is 66.4 V, the VT ratio setting is 6024, and the VT connection setting is
“Delta”. The voltage should be monitored in the range from 70% to 110% of nominal.
The minimum and maximum positive-sequence voltages to be monitored are:
400 kV 400 kV
V min = 0.7 × ------------------- = 161.66 kV, V max = 1.1 × ------------------- = 254.03 kV (EQ 5.22)
3 3
The base unit for voltage (refer to the FlexElements section in this chapter for additional details) is:
V BASE = 0.0664 kV × 6024 = 400 kV (EQ 5.23)

The minimum and maximum voltage values to be monitored (in pu) are:

minimum voltage = 161.66 kV- = 0.404 pu, maximum voltage = 254.03 kV- = 0.635 pu
-------------------------- -------------------------- (EQ 5.24)
400 kV 400 kV
The following settings should be entered:
DCMA OUTPUT H3 SOURCE: “SRC 2 V_1 mag”
DCMA OUTPUT H3 RANGE: “0 to 1 mA”
DCMA OUTPUT H3 MIN VAL: “0.404 pu”
DCMA OUTPUT H3 MAX VAL: “0.635 pu”

The limit settings differ from the expected 0.7 pu and 1.1 pu because the relay calculates the positive-sequence quantities
scaled to the phase-to-ground voltages, even if the VTs are connected in “Delta” (refer to the Metering Conventions section
in Chapter 6), while at the same time the VT nominal voltage is 1 pu for the settings. Consequently the settings required in 5
this example differ from naturally expected by the factor of 3 .
The worst-case error for this application could be calculated by superimposing the following two sources of error:
• ±0.5% of the full scale for the analog output module, or ± 0.005 × ( 1 – 0 ) × 254.03 kV = ± 1.27 kV
• ±0.5% of reading
For example, under nominal conditions, the positive-sequence reads 230.94 kV and the worst-case error is
0.005 x 230.94 kV + 1.27 kV = 2.42 kV.

GE Multilin B30 Bus Differential Relay 5-129

 5.9 TESTING 5 SETTINGS

5.9TESTING 5.9.1 TEST MODE

PATH: SETTINGS TESTING TEST MODE

SETTINGS TEST MODE Range: Disabled, Enabled

TESTING FUNCTION: Disabled
TEST MODE INITIATE: Range: FlexLogic™ operand
MESSAGE
On

The relay provides test settings to verify that functionality using simulated conditions for contact inputs and outputs. The
Test Mode is indicated on the relay faceplate by a flashing Test Mode LED indicator.
To initiate the Test mode, the TEST MODE FUNCTION setting must be “Enabled” and the TEST MODE INITIATE setting must be
set to Logic 1. In particular:
• To initiate Test Mode through relay settings, set TEST MODE INITIATE to “On”. The Test Mode starts when the TEST MODE
FUNCTION setting is changed from “Disabled” to “Enabled”.

• To initiate Test Mode through a user-programmable condition, such as FlexLogic™ operand (pushbutton, digital input,
communication-based input, or a combination of these), set TEST MODE FUNCTION to “Enabled” and set TEST MODE INI-
TIATE to the desired operand. The Test Mode starts when the selected operand assumes a Logic 1 state.

When in Test Mode, the B30 remains fully operational, allowing for various testing procedures. In particular, the protection
and control elements, FlexLogic™, and communication-based inputs and outputs function normally.
The only difference between the normal operation and the Test Mode is the behavior of the input and output contacts. The
former can be forced to report as open or closed or remain fully operational; the latter can be forced to open, close, freeze,
or remain fully operational. The response of the digital input and output contacts to the Test Mode is programmed individu-
5 ally for each input and output using the Force Contact Inputs and Force Contact Outputs test functions described in the fol-
lowing sections.

5.9.2 FORCE CONTACT INPUTS

PATH: SETTINGS TESTING FORCE CONTACT INPUTS

FORCE CONTACT FORCE Cont Ip 1 Range: Disabled, Open, Closed

INPUTS :Disabled
FORCE Cont Ip 2 Range: Disabled, Open, Closed
MESSAGE
:Disabled
↓

FORCE Cont Ip xx Range: Disabled, Open, Closed

MESSAGE
:Disabled

The relay digital inputs (contact inputs) could be pre-programmed to respond to the Test Mode in the following ways:
• If set to “Disabled”, the input remains fully operational. It is controlled by the voltage across its input terminals and can
be turned on and off by external circuitry. This value should be selected if a given input must be operational during the
test. This includes, for example, an input initiating the test, or being a part of a user pre-programmed test sequence.
• If set to “Open”, the input is forced to report as opened (Logic 0) for the entire duration of the Test Mode regardless of
the voltage across the input terminals.
• If set to “Closed”, the input is forced to report as closed (Logic 1) for the entire duration of the Test Mode regardless of
the voltage across the input terminals.
The Force Contact Inputs feature provides a method of performing checks on the function of all contact inputs. Once
enabled, the relay is placed into Test Mode, allowing this feature to override the normal function of contact inputs. The Test
Mode LED will be On, indicating that the relay is in Test Mode. The state of each contact input may be programmed as “Dis-
abled”, “Open”, or “Closed”. All contact input operations return to normal when all settings for this feature are disabled.

5-130 B30 Bus Differential Relay GE Multilin

 5 SETTINGS 5.9 TESTING

5.9.3 FORCE CONTACT OUTPUTS

PATH: SETTINGS TESTING FORCE CONTACT OUTPUTS

FORCE CONTACT FORCE Cont Op 1 Range: Disabled, Energized, De-energized, Freeze

OUTPUTS :Disabled
FORCE Cont Op 2 Range: Disabled, Energized, De-energized, Freeze
MESSAGE
:Disabled
↓

FORCE Cont Op xx Range: Disabled, Energized, De-energized, Freeze

MESSAGE
:Disabled

The relay contact outputs can be pre-programmed to respond to the Test Mode.
If set to “Disabled”, the contact output remains fully operational. If operates when its control operand is Logic 1 and will
resets when its control operand is Logic 0. If set to “Energize”, the output will close and remain closed for the entire duration
of the Test Mode, regardless of the status of the operand configured to control the output contact. If set to “De-energize”,
the output will open and remain opened for the entire duration of the Test Mode regardless of the status of the operand con-
figured to control the output contact. If set to “Freeze”, the output retains its position from before entering the Test Mode,
regardless of the status of the operand configured to control the output contact.
These settings are applied two ways. First, external circuits may be tested by energizing or de-energizing contacts. Sec-
ond, by controlling the output contact state, relay logic may be tested and undesirable effects on external circuits avoided.
Example 1: Initiating a Test from User-Programmable Pushbutton 1
The Test Mode should be initiated from User-Programmable Pushbutton 1. The pushbutton will be programmed as
“Latched” (pushbutton pressed to initiate the test, and pressed again to terminate the test). During the test, Digital Input 1
5
should remain operational, Digital Inputs 2 and 3 should open, and Digital Input 4 should close. Also, Contact Output 1
should freeze, Contact Output 2 should open, Contact Output 3 should close, and Contact Output 4 should remain fully
operational. The required settings are shown below.
To enable User-Programmable Pushbutton 1 to initiate the Test mode, make the following changes in the SETTINGS
TESTING TEST MODE menu:

TEST MODE FUNCTION: “Enabled” and TEST MODE INITIATE: “PUSHBUTTON 1 ON”
Make the following changes to configure the Contact I/Os. In the SETTINGS TESTING FORCE CONTACT INPUTS and
FORCE CONTACT INPUTS menus, set:

FORCE Cont Ip 1: “Disabled”, FORCE Cont Ip 2: “Open”, FORCE Cont Ip 3: “Open”, and FORCE Cont Ip 4: “Closed”
FORCE Cont Op 1: “Freeze”, FORCE Cont Op 2: “De-energized”, FORCE Cont Op 3: “Open”, and FORCE Cont Op 4: “Disabled”

Example 2: Initiating a Test from User-Programmable Pushbutton 1 or through Remote Input 1

The Test should be initiated locally from User-Programmable Pushbutton 1 or remotely through Remote Input 1. Both the
pushbutton and the remote input will be programmed as “Latched”. The required settings are shown below.
Write the following FlexLogic™ equation (EnerVista UR Setup example shown):

Set the User Programmable Pushbutton as latching by changing SETTINGS PRODUCT SETUP USER-PROGRAMMABLE
PUSHBUTTONS USER PUSHBUTTON 1 PUSHBUTTON 1 FUNCTION to “Latched”. To enable either Pushbutton 1 or Remote
Input 1 to initiate the Test mode, make the following changes in the SETTINGS TESTING TEST MODE menu:

TEST MODE FUNCTION: “Enabled” and TEST MODE INITIATE: “VO1”

GE Multilin B30 Bus Differential Relay 5-131

 5.9 TESTING 5 SETTINGS

5-132 B30 Bus Differential Relay GE Multilin

 6 ACTUAL VALUES 6.1 OVERVIEW

6 ACTUAL VALUES 6.1OVERVIEW 6.1.1 ACTUAL VALUES MAIN MENU

ACTUAL VALUES CONTACT INPUTS

See page 6-3.
STATUS
VIRTUAL INPUTS
See page 6-3.

REMOTE INPUTS
See page 6-3.

CONTACT OUTPUTS
See page 6-4.

VIRTUAL OUTPUTS
See page 6-4.

REMOTE DEVICES
See page 6-4.
STATUS
REMOTE DEVICES
See page 6-5.
STATISTICS
DIGITAL COUNTERS
See page 6-5.

SELECTOR SWITCHES
See page 6-5.

FLEX STATES
See page 6-5.

ETHERNET
See page 6-6.

DIRECT INPUTS
See page 6-6.
6
DIRECT DEVICES
See page 6-7.
STATUS
EGD PROTOCOL
See page 6-7.
STATUS

ACTUAL VALUES BUS

See page 6-10.
METERING
SOURCE SRC 1
See page 6-10.

SOURCE SRC 2

SOURCE SRC 3

SOURCE SRC 4

SOURCE SRC 5

SOURCE SRC 6

GE Multilin B30 Bus Differential Relay 6-1

 6.1 OVERVIEW 6 ACTUAL VALUES

TRACKING FREQUENCY
See page 6-12.

FLEXELEMENTS
See page 6-12.

TRANSDUCER I/O
See page 6-13.
DCMA INPUTS

TRANSDUCER I/O
See page 6-13.
RTD INPUTS

ACTUAL VALUES USER-PROGRAMMABLE

See page 6-14.
RECORDS FAULT REPORTS
EVENT RECORDS
See page 6-14.

OSCILLOGRAPHY
See page 6-14.

ACTUAL VALUES MODEL INFORMATION

See page 6-15.
PRODUCT INFO
FIRMWARE REVISIONS
See page 6-15.

6-2 B30 Bus Differential Relay GE Multilin

 6 ACTUAL VALUES 6.2 STATUS

6.2STATUS
For status reporting, ‘On’ represents Logic 1 and ‘Off’ represents Logic 0.

NOTE

6.2.1 CONTACT INPUTS

PATH: ACTUAL VALUES STATUS CONTACT INPUTS

CONTACT INPUTS Cont Ip 1

Off
↓
↓

Cont Ip xx
MESSAGE
Off

The present status of the contact inputs is shown here. The first line of a message display indicates the ID of the contact
input. For example, ‘Cont Ip 1’ refers to the contact input in terms of the default name-array index. The second line of the
display indicates the logic state of the contact input.

6.2.2 VIRTUAL INPUTS

PATH: ACTUAL VALUES STATUS VIRTUAL INPUTS

VIRTUAL INPUTS Virt Ip 1

Off
↓
↓

Virt Ip 64
MESSAGE
Off

The present status of the 64 virtual inputs is shown here. The first line of a message display indicates the ID of the virtual 6
input. For example, ‘Virt Ip 1’ refers to the virtual input in terms of the default name. The second line of the display indicates
the logic state of the virtual input.

6.2.3 REMOTE INPUTS

PATH: ACTUAL VALUES STATUS REMOTE INPUTS

REMOTE INPUTS REMOTE INPUT 1 Range: On, Off

STATUS: Off
↓
↓

REMOTE INPUT 32 Range: On, Off

MESSAGE
STATUS: Off

The present state of the 32 remote inputs is shown here.

The state displayed will be that of the remote point unless the remote device has been established to be “Offline” in which
case the value shown is the programmed default state for the remote input.

GE Multilin B30 Bus Differential Relay 6-3

 6.2 STATUS 6 ACTUAL VALUES

6.2.4 CONTACT OUTPUTS

PATH: ACTUAL VALUES STATUS CONTACT OUTPUTS

CONTACT OUTPUTS Cont Op 1

Off
↓

Cont Op xx
MESSAGE
Off

The present state of the contact outputs is shown here. The first line of a message display indicates the ID of the contact
output. For example, ‘Cont Op 1’ refers to the contact output in terms of the default name-array index. The second line of
the display indicates the logic state of the contact output.
For Form-A outputs, the state of the voltage(V) and/or current(I) detectors will show as: Off, VOff, IOff, On,
VOn, and/or IOn. For Form-C outputs, the state will show as Off or On.
NOTE

6.2.5 VIRTUAL OUTPUTS

PATH: ACTUAL VALUES STATUS VIRTUAL OUTPUTS

VIRTUAL OUTPUTS Virt Op 1

Off
↓

Virt Op 96
MESSAGE
Off

The present state of up to 96 virtual outputs is shown here. The first line of a message display indicates the ID of the virtual
output. For example, ‘Virt Op 1’ refers to the virtual output in terms of the default name-array index. The second line of the
display indicates the logic state of the virtual output, as calculated by the FlexLogic™ equation for that output.
6 6.2.6 REMOTE DEVICES

a) STATUS
PATH: ACTUAL VALUES STATUS REMOTE DEVICES STATUS

REMOTE DEVICES All REMOTE DEVICES Range: Yes, No

STATUS ONLINE: No
REMOTE DEVICE 1 Range: Online, Offline
MESSAGE
STATUS: Offline
↓

REMOTE DEVICE 16 Range: Online, Offline

MESSAGE
STATUS: Offline

The present state of up to 16 programmed Remote Devices is shown here. The ALL REMOTE DEVICES ONLINE message indi-
cates whether or not all programmed Remote Devices are online. If the corresponding state is "No", then at least one
required Remote Device is not online.

6-4 B30 Bus Differential Relay GE Multilin

 6 ACTUAL VALUES 6.2 STATUS

b) STATISTICS
PATH: ACTUAL VALUES STATUS REMOTE DEVICES STATISTICS REMOTE DEVICE 1(16)

REMOTE DEVICE 1 REMOTE DEVICE 1

StNum: 0
REMOTE DEVICE 1
MESSAGE
SqNum: 0

Statistical data (2 types) for up to 16 programmed Remote Devices is shown here.

The StNum number is obtained from the indicated Remote Device and is incremented whenever a change of state of at
least one DNA or UserSt bit occurs. The SqNum number is obtained from the indicated Remote Device and is incremented
whenever a GSSE message is sent. This number will rollover to zero when a count of 4,294,967,295 is incremented.

6.2.7 DIGITAL COUNTERS

PATH: ACTUAL VALUES STATUS DIGITAL COUNTERS DIGITAL COUNTERS Counter 1(8)

DIGITAL COUNTERS Counter 1 ACCUM:

Counter 1 0
Counter 1 FROZEN:
MESSAGE
0
Counter 1 FROZEN:
MESSAGE
YYYY/MM/DD HH:MM:SS
Counter 1 MICROS:
MESSAGE
0

The present status of the 8 digital counters is shown here. The status of each counter, with the user-defined counter name,
includes the accumulated and frozen counts (the count units label will also appear). Also included, is the date/time stamp
for the frozen count. The Counter n MICROS value refers to the microsecond portion of the time stamp.

6.2.8 SELECTOR SWITCHES

6
PATH: ACTUAL VALUES STATUS SELECTOR SWITCHES

SELECTOR SWITCHES SELECTOR SWITCH 1 Range: Current Position / 7

POSITION: 0/7
SELECTOR SWITCH 2 Range: Current Position / 7
MESSAGE
POSITION: 0/7

The display shows both the current position and the full range. The current position only (an integer from 0 through 7) is the
actual value.

6.2.9 FLEX STATES

PATH: ACTUAL VALUES STATUS FLEX STATES

FLEX STATES PARAM 1: Off Range: Off, On

Off
↓

PARAM 256: Off Range: Off, On

MESSAGE
Off

There are 256 FlexState bits available. The second line value indicates the state of the given FlexState bit.

GE Multilin B30 Bus Differential Relay 6-5

 6.2 STATUS 6 ACTUAL VALUES

6.2.10 ETHERNET

PATH: ACTUAL VALUES STATUS ETHERNET

ETHERNET ETHERNET PRI LINK Range: Fail, OK

STATUS: OK
ETHERNET SEC LINK Range: Fail, OK
MESSAGE
STATUS: OK

These values indicate the status of the primary and secondary Ethernet links.

6.2.11 DIRECT INPUTS

PATH: ACTUAL VALUES STATUS DIRECT INPUTS

DIRECT INPUTS AVG MSG RETURN

TIME CH1: 0 ms
UNRETURNED MSG
MESSAGE
COUNT CH1: 0
CRC FAIL COUNT
MESSAGE
CH1: 0
AVG MSG RETURN
MESSAGE
TIME CH2: 0 ms
UNRETURNED MSG
MESSAGE
COUNT CH2: 0
CRC FAIL COUNT
MESSAGE
CH2: 0

6
DIRECT INPUT 1:
MESSAGE
On
↓

DIRECT INPUT 32:

MESSAGE
On

The AVERAGE MSG RETURN TIME is the time taken for direct output messages to return to the sender in a direct input/output
ring configuration (this value is not applicable for non-ring configurations). This is a rolling average calculated for the last 10
messages. There are two return times for dual-channel communications modules.
The UNRETURNED MSG COUNT values (one per communications channel) count the direct output messages that do not
make the trip around the communications ring. The CRC FAIL COUNT values (one per communications channel) count the
direct output messages that have been received but fail the CRC check. High values for either of these counts may indicate
on a problem with wiring, the communication channel, or the relay(s). The UNRETURNED MSG COUNT and CRC FAIL COUNT
values can be cleared using the CLEAR DIRECT I/O COUNTERS command.
The DIRECT INPUT x values represent the state of the x-th direct input.

6-6 B30 Bus Differential Relay GE Multilin

 6 ACTUAL VALUES 6.2 STATUS

6.2.12 DIRECT DEVICES STATUS

PATH: ACTUAL VALUES STATUS DIRECT DEVICES STATUS

DIRECT DEVICES DIRECT DEVICE 1

STATUS STATUS: Offline
DIRECT DEVICE 2
MESSAGE
STATUS: Offline
↓

DIRECT DEVICE 16
MESSAGE
STATUS: Offline

These actual values represent the state of direct devices 1 through 16.

6.2.13 EGD PROTOCOL STATUS

a) FAST EXCHANGE
PATH: ACTUAL VALUES STATUS EGD PROTOCOL STATUS PRODUCER STATUS FAST EXCHANGE 1

FAST EXCHANGE 1 FAST EXCHANGE 1

SIGNATURE: 0
FAST EXCHANGE 1
MESSAGE
DATA LENGTH: 0

These values provide information that may be useful for debugging an EGD network. The EGD signature and packet size
for the fast EGD exchange is displayed.

b) SLOW EXCHANGE
PATH: ACTUAL VALUES STATUS EGD PROTOCOL STATUS PRODUCER STATUS SLOW EXCHANGE 1(2)

SLOW EXCHANGE 1 SLOW EXCHANGE 1 6

SIGNATURE: 0
SLOW EXCHANGE 1
MESSAGE
DATA LENGTH: 0

These values provide information that may be useful for debugging an EGD network. The EGD signature and packet size
for the slow EGD exchanges are displayed.

GE Multilin B30 Bus Differential Relay 6-7

 6.3 METERING 6 ACTUAL VALUES

6.3METERING 6.3.1 METERING CONVENTIONS

a) UR CONVENTION FOR MEASURING PHASE ANGLES

All phasors calculated by UR-series relays and used for protection, control and metering functions are rotating phasors that
maintain the correct phase angle relationships with each other at all times.
For display and oscillography purposes, all phasor angles in a given relay are referred to an AC input channel pre-selected
by the SETTINGS SYSTEM SETUP POWER SYSTEM FREQUENCY AND PHASE REFERENCE setting. This setting
defines a particular source to be used as the reference.
The relay will first determine if any “Phase VT” bank is indicated in the Source. If it is, voltage channel VA of that bank is
used as the angle reference. Otherwise, the relay determines if any “Aux VT” bank is indicated; if it is, the auxiliary voltage
channel of that bank is used as the angle reference. If neither of the two conditions is satisfied, then two more steps of this
hierarchical procedure to determine the reference signal include “Phase CT” bank and “Ground CT” bank.
If the AC signal pre-selected by the relay upon configuration is not measurable, the phase angles are not referenced. The
phase angles are assigned as positive in the leading direction, and are presented as negative in the lagging direction, to
more closely align with power system metering conventions. This is illustrated below.

-270o

-225o -315o

positive
angle
direction

-180o 0o
UR phase angle
reference

6 -135o -45o

-90o 827845A1.CDR

Figure 6–1: UR PHASE ANGLE MEASUREMENT CONVENTION

b) UR CONVENTION FOR MEASURING SYMMETRICAL COMPONENTS

The UR-series of relays calculate voltage symmetrical components for the power system phase A line-to-neutral voltage,
and symmetrical components of the currents for the power system phase A current. Owing to the above definition, phase
angle relations between the symmetrical currents and voltages stay the same irrespective of the connection of instrument
transformers. This is important for setting directional protection elements that use symmetrical voltages.
For display and oscillography purposes the phase angles of symmetrical components are referenced to a common refer-
ence as described in the previous sub-section.
WYE-CONNECTED INSTRUMENT TRANSFORMERS:
• ABC phase rotation: • ACB phase rotation:
1 1
V_0 = --- ( V AG + V BG + V CG ) V_0 = --- ( V AG + V BG + V CG )
3 3
1 2 1 2
V_1 = --- ( V AG + aV BG + a V CG ) V_1 = --- ( V AG + a V BG + aV CG )
3 3
1 2 1 2
V_2 = --- ( V AG + a V BG + aV CG ) V_2 = --- ( V AG + aV BG + a V CG )
3 3

The above equations apply to currents as well.

6-8 B30 Bus Differential Relay GE Multilin

 6 ACTUAL VALUES 6.3 METERING

DELTA-CONNECTED INSTRUMENT TRANSFORMERS:

• ABC phase rotation: • ACB phase rotation:

V_0 = N/A V_0 = N/A

1 ∠– 30 ° 1 ∠30° 2
2
V_1 = -------------------- ( V AB + aV BC + a V CA ) V_1 = ----------------- ( V AB + a V BC + aV CA )
3 3 3 3
1 ∠ 30° 1 ∠– 30 ° 2
2
V_2 = ----------------- ( V AB + a V BC + aV CA ) V_2 = -------------------- ( V AB + aV BC + a V CA )
3 3 3 3

The zero-sequence voltage is not measurable under the Delta connection of instrument transformers and is defaulted to
zero. The table below shows an example of symmetrical components calculations for the ABC phase rotation.
Table 6–1: SYMMETRICAL COMPONENTS CALCULATION EXAMPLE
SYSTEM VOLTAGES, SEC. V * VT RELAY INPUTS, SEC. V SYMM. COMP, SEC. V
CONN.
VAG VBG VCG VAB VBC VCA F5AC F6AC F7AC V0 V1 V2
13.9 76.2 79.7 84.9 138.3 85.4 WYE 13.9 76.2 79.7 19.5 56.5 23.3
∠0° ∠–125° ∠–250° ∠–313° ∠–97° ∠–241° ∠0° ∠–125° ∠–250° ∠–192° ∠–7° ∠–187°
UNKNOWN (only V1 and V2 84.9 138.3 85.4 DELTA 84.9 138.3 85.4 N/A 56.5 23.3
can be determined) ∠0° ∠–144° ∠–288° ∠0° ∠–144° ∠–288° ∠–54° ∠–234°

* The power system voltages are phase-referenced – for simplicity – to VAG and VAB, respectively. This, however, is a
relative matter. It is important to remember that the B30 displays are always referenced as specified under SETTINGS
SYSTEM SETUP POWER SYSTEM FREQUENCY AND PHASE REFERENCE.

The example above is illustrated in the following figure.

SYSTEM VOLTAGES SYMMETRICAL

COMPONENTS
UR phase angle

6
reference

1
UR phase angle

A
reference

WYE VTs

C
B
0
2
U
re R ph
fe a
re se
nc a
e ng
le

A U
1
re R ph
fe a
re se
nc a
e ng
DELTA VTs le

C
B
2
827844A1.CDR

Figure 6–2: MEASUREMENT CONVENTION FOR SYMMETRICAL COMPONENTS

GE Multilin B30 Bus Differential Relay 6-9

 6.3 METERING 6 ACTUAL VALUES

6.3.2 BUS ZONE

PATH: ACTUAL VALUES METERING BUS BUS ZONE 1

BUS ZONE 1 BUS 1 DIFF Iad:

0.000 A 0.0°
BUS 1 REST Iar:
MESSAGE
0.000 A 0.0°
BUS 1 DIFF Ibd:
MESSAGE
0.000 A 0.0°
BUS 1 REST Ibr:
MESSAGE
0.000 A 0.0°
BUS 1 DIFF Icd:
MESSAGE
0.000 A 0.0°
BUS 1 REST Icr:
MESSAGE
0.000 A 0.0°

The phasors of differential and restraint currents are available for the bus zone. The magnitudes are displayed in primary
amperes (see Chapter 8: Theory of Operation for additional explanation).

6.3.3 SOURCES

PATH: ACTUAL VALUES METERING SOURCE SRC 1

PHASE CURRENT SRC 1 RMS Ia: 0.000

SRC 1 b: 0.000 c: 0.000 A
SRC 1 RMS Ia:
MESSAGE
0.000 A
6 MESSAGE
SRC 1 RMS Ib:
0.000 A
SRC 1 RMS Ic:
MESSAGE
0.000 A
SRC 1 RMS In:
MESSAGE
0.000 A
SRC 1 PHASOR Ia:
MESSAGE
0.000 A 0.0°
SRC 1 PHASOR Ib:
MESSAGE
0.000 A 0.0°
SRC 1 PHASOR Ic:
MESSAGE
0.000 A 0.0°
SRC 1 PHASOR In:
MESSAGE
0.000 A 0.0°
SRC 1 ZERO SEQ I0:
MESSAGE
0.000 A 0.0°
SRC 1 POS SEQ I1:
MESSAGE
0.000 A 0.0°
SRC 1 NEG SEQ I2:
MESSAGE
0.000 A 0.0°

6-10 B30 Bus Differential Relay GE Multilin

 6 ACTUAL VALUES 6.3 METERING

GROUND CURRENT SRC 1 RMS Ig:

SRC 1 0.000 A
SRC 1 PHASOR Ig:
MESSAGE
0.000 A 0.0°
SRC 1 PHASOR Igd:
MESSAGE
0.000 A 0.0°

PHASE VOLTAGE SRC 1 RMS Vag:

SRC 1 0.00 V
SRC 1 RMS Vbg:
MESSAGE
0.00 V
SRC 1 RMS Vcg:
MESSAGE
0.00 V
SRC 1 PHASOR Vag:
MESSAGE
0.000 V 0.0°
SRC 1 PHASOR Vbg:
MESSAGE
0.000 V 0.0°
SRC 1 PHASOR Vcg:
MESSAGE
0.000 V 0.0°
SRC 1 RMS Vab:
MESSAGE
0.00 V
SRC 1 RMS Vbc:
MESSAGE
0.00 V
SRC 1 RMS Vca:
MESSAGE
0.00 V
SRC 1 PHASOR Vab:
6
MESSAGE
0.000 V 0.0°
SRC 1 PHASOR Vbc:
MESSAGE
0.000 V 0.0°
SRC 1 PHASOR Vca:
MESSAGE
0.000 V 0.0°
SRC 1 ZERO SEQ V0:
MESSAGE
0.000 V 0.0°
SRC 1 POS SEQ V1:
MESSAGE
0.000 V 0.0°
SRC 1 NEG SEQ V2:
MESSAGE
0.000 V 0.0°

AUXILIARY VOLTAGE SRC 1 RMS Vx:

SRC 1 0.00 V
SRC 1 PHASOR Vx:
MESSAGE
0.000 V 0.0°

FREQUENCY SRC 1 FREQUENCY:

SRC 1 0.00 Hz

GE Multilin B30 Bus Differential Relay 6-11

 6.3 METERING 6 ACTUAL VALUES

Six identical Source menus are available. The "SRC 1" text will be replaced by whatever name was programmed by the
user for the associated source (see SETTINGS SYSTEM SETUP SIGNAL SOURCES).

SOURCE FREQUENCY is measured via software-implemented zero-crossing detection of an AC signal. The signal is either a
Clarke transformation of three-phase voltages or currents, auxiliary voltage, or ground current as per source configuration
(see the SYSTEM SETUP POWER SYSTEM settings). The signal used for frequency estimation is low-pass filtered. The
final frequency measurement is passed through a validation filter that eliminates false readings due to signal distortions and
transients.

6.3.4 TRACKING FREQUENCY

PATH: ACTUAL VALUES METERING TRACKING FREQUENCY

TRACKING FREQUENCY TRACKING FREQUENCY:

60.00 Hz

The tracking frequency is displayed here. The frequency is tracked based on configuration of the reference source. The
TRACKING FREQUENCY is based upon positive sequence current phasors from all line terminals and is synchronously
adjusted at all terminals. If currents are below 0.125 pu, then the NOMINAL FREQUENCY is used.

6.3.5 FLEXELEMENTS™

PATH: ACTUAL VALUES METERING FLEXELEMENTS FLEXELEMENT 1(8)

FLEXELEMENT 1 FLEXELEMENT 1
OpSig: 0.000 pu

The operating signals for the FlexElements™ are displayed in pu values using the following definitions of the base units.

Table 6–2: FLEXELEMENT™ BASE UNITS

BUS DIFFERENTIAL IBASE = maximum primary RMS value of the +IN and –IN inputs
RESTRAINING CURRENT (CT primary for source currents, and bus reference primary current for bus differential currents)

6
(Bus Diff Mag)
BUS DIFFERENTIAL IBASE = maximum primary RMS value of the +IN and – IN inputs
RESTRAINING CURRENT (CT primary for source currents, and bus reference primary current for bus differential currents)
(Bus Rest Mag)
dcmA BASE = maximum value of the DCMA INPUT MAX setting for the two transducers configured
under the +IN and –IN inputs.
FREQUENCY fBASE = 1 Hz
PHASE ANGLE ϕBASE = 360 degrees (see the UR angle referencing convention)
POWER FACTOR PFBASE = 1.00
RTDs BASE = 100°C
SOURCE CURRENT IBASE = maximum nominal primary RMS value of the +IN and –IN inputs
SOURCE POWER PBASE = maximum value of VBASE × IBASE for the +IN and –IN inputs
SOURCE VOLTAGE VBASE = maximum nominal primary RMS value of the +IN and –IN inputs

6-12 B30 Bus Differential Relay GE Multilin

 6 ACTUAL VALUES 6.3 METERING

6.3.6 TRANSDUCER INPUTS/OUTPUTS

PATH: ACTUAL VALUES METERING TRANSDUCER I/O DCMA INPUTS DCMA INPUT xx

DCMA INPUT xx DCMA INPUT xx

0.000 mA

Actual values for each dcmA input channel that is enabled are displayed with the top line as the programmed Channel ID
and the bottom line as the value followed by the programmed units.
PATH: ACTUAL VALUES METERING TRANSDUCER I/O RTD INPUTS RTD INPUT xx

RTD INPUT xx RTD INPUT xx

-50 °C

Actual values for each RTD input channel that is enabled are displayed with the top line as the programmed Channel ID
and the bottom line as the value.

GE Multilin B30 Bus Differential Relay 6-13

 6.4 RECORDS 6 ACTUAL VALUES

6.4RECORDS 6.4.1 USER-PROGRAMMABLE FAULT REPORTS

PATH: ACTUAL VALUES RECORDS USER-PROGRAMMABLE FAULT REPORT

USER-PROGRAMMABLE NEWEST RECORD

FAULT REPORT NUMBER: 0
LAST CLEARED DATE:
MESSAGE
2002/8/11 14:23:57
LAST REPORT DATE:
MESSAGE
2002/10/09 08:25:27

This menu displays the User-Programmable Fault Report actual values. See the User-Programmable Fault Report section
in Chapter 5 for additional information on this feature.

6.4.2 EVENT RECORDS

PATH: ACTUAL VALUES RECORDS EVENT RECORDS

EVENT RECORDS EVENT: XXXX

RESET OP(PUSHBUTTON)
↓

EVENT: 3 EVENT 3
MESSAGE
POWER ON DATE: 2000/07/14
EVENT: 2 EVENT 3
MESSAGE
POWER OFF TIME: 14:53:00.03405
EVENT: 1
MESSAGE Date and Time Stamps
EVENTS CLEARED

6 The Event Records menu shows the contextual data associated with up to the last 1024 events, listed in chronological
order from most recent to oldest. If all 1024 event records have been filled, the oldest record will be removed as a new
record is added. Each event record shows the event identifier/sequence number, cause, and date/time stamp associated
with the event trigger. Refer to the COMMANDS CLEAR RECORDS menu for clearing event records.

6.4.3 OSCILLOGRAPHY

PATH: ACTUAL VALUES RECORDS OSCILLOGRAPHY

OSCILLOGRAPHY FORCE TRIGGER? Range: No, Yes

No
NUMBER OF TRIGGERS:
MESSAGE
0
AVAILABLE RECORDS:
MESSAGE
0
CYCLES PER RECORD:
MESSAGE
0.0
LAST CLEARED DATE:
MESSAGE
2000/07/14 15:40:16

This menu allows the user to view the number of triggers involved and number of oscillography traces available. The
‘cycles per record’ value is calculated to account for the fixed amount of data storage for oscillography. See the Oscillogra-
phy section of Chapter 5 for further details.
A trigger can be forced here at any time by setting "Yes" to the FORCE TRIGGER? command. Refer to the COMMANDS
CLEAR RECORDS menu for clearing the oscillography records.

6-14 B30 Bus Differential Relay GE Multilin

 6 ACTUAL VALUES 6.5 PRODUCT INFORMATION

6.5PRODUCT INFORMATION 6.5.1 MODEL INFORMATION

PATH: ACTUAL VALUES PRODUCT INFO MODEL INFORMATION

MODEL INFORMATION ORDER CODE LINE 1: Example code shown

B30-E00-HCL-F8H-H6A
ORDER CODE LINE 2:
MESSAGE

ORDER CODE LINE 3:

MESSAGE

ORDER CODE LINE 4:

MESSAGE

SERIAL NUMBER:
MESSAGE

ETHERNET MAC ADDRESS

MESSAGE
000000000000
MANUFACTURING DATE: Range: YYYY/MM/DD HH:MM:SS
MESSAGE
0
OPERATING TIME:
MESSAGE
0:00:00

The product order code, serial number, Ethernet MAC address, date/time of manufacture, and operating time are shown
here.

6.5.2 FIRMWARE REVISIONS

PATH: ACTUAL VALUES PRODUCT INFO FIRMWARE REVISIONS

FIRMWARE REVISIONS B30 Bus Relay Range: 0.00 to 655.35

Revision number of the application firmware.
6
REVISION: 4.40
MODIFICATION FILE Range: 0 to 65535 (ID of the MOD FILE)
MESSAGE Value is 0 for each standard firmware release.
NUMBER: 0
BOOT PROGRAM Range: 0.00 to 655.35
MESSAGE Revision number of the boot program firmware.
REVISION: 1.13
FRONT PANEL PROGRAM Range: 0.00 to 655.35
MESSAGE Revision number of faceplate program firmware.
REVISION: 0.08
COMPILE DATE: Range: Any valid date and time.
MESSAGE Date and time when product firmware was built.
2004/09/15 04:55:16
BOOT DATE: Range: Any valid date and time.
MESSAGE Date and time when the boot program was built.
2004/09/15 16:41:32

The shown data is illustrative only. A modification file number of 0 indicates that, currently, no modifications have been
installed.

GE Multilin B30 Bus Differential Relay 6-15

 6.5 PRODUCT INFORMATION 6 ACTUAL VALUES

6-16 B30 Bus Differential Relay GE Multilin

 7 COMMANDS AND TARGETS 7.1 COMMANDS

7 COMMANDS AND TARGETS 7.1COMMANDS 7.1.1 COMMANDS MENU

COMMANDS

COMMANDS
MESSAGE
VIRTUAL INPUTS
COMMANDS
MESSAGE
CLEAR RECORDS
COMMANDS
MESSAGE
SET DATE AND TIME
COMMANDS
MESSAGE
RELAY MAINTENANCE

The commands menu contains relay directives intended for operations personnel. All commands can be protected from
unauthorized access via the command password; see the Password Security section of Chapter 5 for details. The following
flash message appears after successfully command entry:

COMMAND
EXECUTED

7.1.2 VIRTUAL INPUTS

PATH: COMMANDS VIRTUAL INPUTS

COMMANDS Virt Ip 1 Range: Off, On

VIRTUAL INPUTS Off
↓
↓

Virt Ip 64 Range: Off, On

MESSAGE
Off 7
The states of up to 64 virtual inputs are changed here. The first line of the display indicates the ID of the virtual input. The
second line indicates the current or selected status of the virtual input. This status will be a logical state ‘Off’ (0) or ‘On’ (1).

GE Multilin B30 Bus Differential Relay 7-1

 7.1 COMMANDS 7 COMMANDS AND TARGETS

7.1.3 CLEAR RECORDS

PATH: COMMANDS CLEAR RECORDS

COMMANDS CLEAR USER FAULT Range: No, Yes

CLEAR RECORDS REPORTS? No
CLEAR EVENT RECORDS? Range: No, Yes
No
CLEAR OSCILLOGRAPHY? Range: No, Yes
No
CLEAR UNAUTHORIZED Range: No, Yes
ACCESS? No
CLEAR DIRECT I/O Range: No, Yes. Valid only for units with Direct Input/
COUNTERS? No Output module.

CLEAR ALL RELAY Range: No, Yes

RECORDS? No

This menu contains commands for clearing historical data such as the Event Records. Data is cleared by changing a com-
mand setting to “Yes” and pressing the key. After clearing data, the command setting automatically reverts to “No”.

7.1.4 SET DATE AND TIME

PATH: COMMANDS SET DATE AND TIME

COMMANDS SET DATE AND TIME: (YYYY/MM/DD HH:MM:SS)

SET DATE AND TIME 2000/01/14 13:47:03

The date and time can be entered here via the faceplate keypad only if the IRIG-B or SNTP signal is not in use. The time
setting is based on the 24-hour clock. The complete date, as a minimum, must be entered to allow execution of this com-
mand. The new time will take effect at the moment the key is clicked.

7.1.5 RELAY MAINTENANCE

PATH: COMMANDS RELAY MAINTENANCE

7 COMMANDS
RELAY MAINTENANCE
PERFORM LAMPTEST?
No
Range: No, Yes

UPDATE ORDER CODE? Range: No, Yes

No

This menu contains commands for relay maintenance purposes. Commands are activated by changing a command setting
to “Yes” and pressing the key. The command setting will then automatically revert to “No”.
The PERFORM LAMPTEST command turns on all faceplate LEDs and display pixels for a short duration. The UPDATE
ORDER CODE command causes the relay to scan the backplane for the hardware modules and update the order code to
match. If an update occurs, the following message is shown.
UPDATING...
PLEASE WAIT
There is no impact if there have been no changes to the hardware modules. When an update does not occur, the ORDER
CODE NOT UPDATED message will be shown.

7-2 B30 Bus Differential Relay GE Multilin

 7 COMMANDS AND TARGETS 7.2 TARGETS

7.2TARGETS 7.2.1 TARGETS MENU

TARGETS

DIGITAL ELEMENT 1: Displayed only if targets for this element are active.
MESSAGE Example shown.
LATCHED
DIGITAL ELEMENT 48: Displayed only if targets for this element are active.
MESSAGE Example shown.
LATCHED

MESSAGE
↓
↓

The status of any active targets will be displayed in the Targets menu. If no targets are active, the display will read No
Active Targets:

7.2.2 TARGET MESSAGES

When there are no active targets, the first target to become active will cause the display to immediately default to that mes-
sage. If there are active targets and the user is navigating through other messages, and when the default message timer
times out (i.e. the keypad has not been used for a determined period of time), the display will again default back to the tar-
get message.
The range of variables for the target messages is described below. Phase information will be included if applicable. If a tar-
get message status changes, the status with the highest priority will be displayed.

Table 7–1: TARGET MESSAGE PRIORITY STATUS

PRIORITY ACTIVE STATUS DESCRIPTION
1 OP element operated and still picked up
2 PKP element picked up and timed out
3 LATCHED element had operated but has dropped out

If a self test error is detected, a message appears indicating the cause of the error. For example UNIT NOT PROGRAMMED
indicates that the minimal relay settings have not been programmed. 7
7.2.3 RELAY SELF-TESTS

The relay performs a number of self-test diagnostic checks to ensure device integrity. The two types of self-tests (major and
minor) are listed in the tables below. When either type of self-test error occurs, the Trouble LED Indicator will turn on and a
target message displayed. All errors record an event in the event recorder. Latched errors can be cleared by pressing the
RESET key, providing the condition is no longer present.
Major self-test errors also result in the following:
• the critical fail relay on the power supply module is de-energized
• all other output relays are de-energized and are prevented from further operation
• the faceplate In Service LED indicator is turned off
• a RELAY OUT OF SERVICE event is recorded
Most of the minor self-test errors can be disabled. Refer to the settings in the User-Programmable Self-Tests section in
Chapter 5 for additional details.

GE Multilin B30 Bus Differential Relay 7-3

 7.2 TARGETS 7 COMMANDS AND TARGETS

Table 7–2: MAJOR SELF-TEST ERROR MESSAGES

SELF-TEST ERROR LATCHED DESCRIPTION OF PROBLEM HOW OFTEN THE WHAT TO DO
MESSAGE TARGET TEST IS PERFORMED
MESSAGE?
DSP ERRORS: Yes CT/VT module with digital signal Every 1/8th of a cycle. Cycle the control power (if the problem
A/D Calibration, A/D processor may have a problem. recurs, contact the factory).
Interrupt, A/D Reset, Inter
DSP Rx, Sample Int, Rx
Interrupt, Tx Interrupt, Rx
Sample Index, Invalid
Settings, Rx Checksum
DSP ERROR: Yes One or more DSP modules in a Rev. C DSP needs to be replaced Contact the factory
INVALID REVISION multiple DSP unit has Rev. C with a Rev. D DSP.
hardware
EQUIPMENT MISMATCH No Configuration of modules does not On power up; thereafter, the Check all modules against the order
with 2nd-line detail match the order code stored in the backplane is checked for missing code, ensure they are inserted
CPU. cards every 5 seconds. properly, and cycle control power (if
problem persists, contact factory).
FLEXLOGIC ERR TOKEN No FlexLogic™ equations do not Event driven; whenever Flex- Finish all equation editing and use self
with 2nd-line detail compile properly. Logic™ equations are modified. test to debug any errors.
LATCHING OUTPUT No Discrepancy in the position of a Every 1/8th of a cycle. The latching output module failed.
ERROR latching contact between firmware Replace the Module.
and hardware has been detected.
PROGRAM MEMORY Yes Error was found while checking Once flash is uploaded with new Contact the factory.
Test Failed Flash memory. firmware.
UNIT NOT CALIBRATED No Settings indicate the unit is not On power up. Contact the factory.
calibrated.
UNIT NOT PROGRAMMED No PRODUCT SETUP On power up and whenever the Program all settings (especially those
INSTALLATION setting indicates RELAY PROGRAMMED setting is under PRODUCT SETUP
relay is not in a programmed state. altered. INSTALLATION).

Table 7–3: MINOR SELF-TEST ERROR MESSAGES

SELF-TEST ERROR LATCHED DESCRIPTION OF PROBLEM HOW OFTEN THE WHAT TO DO
MESSAGE TARGET TEST IS PERFORMED
MESSAGE
BATTERY FAIL Yes Battery is not functioning. Monitored every 5 seconds. Reported Replace the battery located in the
after 1 minute if problem persists. power supply module (1H or 1L).
DIRECT RING BREAK No Direct input/output settings Every second. Check direct input/output configuration
configured for a ring, but the and/or wiring.
connection is not in a ring.
DIRECT DEVICE OFF No A direct device is configured but Every second. Check direct input/output configuration
not connected. and/or wiring.
EEPROM DATA Yes The non-volatile memory has been On power up only. If this message appears after an order
ERROR corrupted. code update is preformed, press the
RESET key to clear target message. In
other cases, contact the factory.
IRIG-B FAILURE No A bad IRIG-B input signal has been Monitored whenever an IRIG-B signal Ensure the IRIG-B cable is connected,

7 detected is received. check cable functionality (i.e. look for

physical damage or perform continuity
test), ensure IRIG-B receiver is
functioning, and check input signal level
(it may be less than specification). If
none of these apply, contact the factory.
LATCHING OUT Yes Latching output failure. Event driven. Contact the factory.
ERROR
LOW ON MEMORY Yes Memory is close to 100% capacity. Monitored every 5 seconds. Contact the factory.
PRI ETHERNET FAIL Yes Primary Ethernet connection failed. Monitored every 2 seconds Check connections.
PROTOTYPE Yes A prototype version of the firmware On power up only. Contact the factory.
FIRMWARE is loaded.
REMOTE DEVICE OFF No One or more GOOSE devices are Event driven – occurs when a device Check GOOSE setup.
not responding. programmed to receive GOOSE
messages stops receiving. Every 1 to
60 s, depending on GOOSE packets.
SEC ETHERNET FAIL Yes Sec. Ethernet connection failed. Monitored every 2 seconds Check connections.
SNTP FAILURE No SNTP server not responding. 10 to 60 seconds. Check SNTP configuration and/or
network connections.
SYSTEM EXCEPTION Yes Abnormal restart from modules Event driven. Contact the factory.
being removed/inserted when
powered-up, abnormal DC supply,
or internal relay failure.
WATCHDOG ERROR No Some tasks are behind schedule. Event driven. Contact the factory.

7-4 B30 Bus Differential Relay GE Multilin

 8 THEORY OF OPERATION 8.1 INTRODUCTION

8 THEORY OF OPERATION 8.1INTRODUCTION 8.1.1 BUS DIFFERENTIAL PROTECTION

Referring to the figure below, input currents defining (through the dynamic bus replica) the bus differential zone are
received by the B30 from Current Transformers (CTs) associated with the power system.

Measuring Unit Unbiased Differential

Unit
1 2 3
i1 I1

Differential
Unbiased
DIFUNB
4

i2 I2
ID
Ratio Matching and Scaling

Differential 6
Current

Phasor Estimation
i3 I3
Pre-Filtering
input currents

DIFL

DIF1
5 7

IR
Restraining
DIFH

DIF2
Current

8 L
iN IN O DIFBIASED
G
I
C

Directional
DIR
Element
10

Saturation SAT
Detector
11

9 Biased Differential
Unit

836723A1.CDR

Figure 8–1: BUS DIFFERENTIAL PROTECTION BLOCK DIAGRAM

The currents are digitally pre-filtered (Block 1) in order to remove the decaying DC components and other signal distortions.
The filtered input signals are brought to a common scale taking into account the transformation ratios of the connected CTs
(Block 2). Refer to Section 8.2: Dynamic Bus Replica for details.
Phasors of the differential zone currents are estimated digitally (Block 3) and the differential (Block 4) and restraining (Block
5) signals are calculated. Refer to Section 8.3: Differential Principle for details.
The magnitude of the differential signal is compared with a threshold and an appropriate flag indicating operation of the
unbiased bus differential protection is produced (Block 6).
The magnitudes of the differential and restraining currents are compared and two auxiliary flags that correspond to two spe- 8
cifically shaped portions of the differential operating characteristic (DIF1 and DIF2) are produced (blocks 7 and 8). The
characteristic is split in order to enhance performance of the relay by applying diverse security measures for each of the
regions. Refer to Section 8.3: Differential Principle for details.
The directional element (Block 10) supervises the biased differential characteristic when necessary. The current directional
comparison principle is used that processes phasors of all the input currents as well as the differential and restraining cur-
rents. Refer to Section 8.4: Directional Principle for details.
The saturation detector (Block 9) analyzes the differential and restraining currents as well as the samples of the input cur-
rents. This block sets its output flag upon detecting CT saturation. Refer to Section 8.5: Saturation Detector for details.
The output logic (Block 11) combines the differential, directional and saturation flags into the biased differential operation
flag. The applied logic enhances performance of the relay while keeping an excellent balance between dependability/speed
and security. Refer to Section 8.6: Output Logic and Examples for details.

GE Multilin B30 Bus Differential Relay 8-1

 8.2 DYNAMIC BUS REPLICA 8 THEORY OF OPERATION

8.2DYNAMIC BUS REPLICA 8.2.1 DYNAMIC BUS REPLICA MECHANISM

The B30 provides protection for one bus differential zone. The bus differential zone of the B30 allows for protecting bus
sections that include circuits that are switchable between different bus sections. Proper relay operation is achieved by
associating a status signal with each input current. This mechanism is referred to as a dynamic bus replica.
The dynamic bus zone is programmed as a number of ‘source-status’ pairs. The Sources feature of the UR is a convenient
and flexible mechanism for associating input currents and voltages with protection and control elements.
The Source mechanism permits summing physical input currents and assigning the resulting sum to a Source. It is not rec-
ommended to use this aspect of the Source mechanism for the bus differential protection. If two or more physical currents
are summed using the Source mechanism, and then used as an input to the differential protection element, the restraining
current calculated by the relay may not reflect external fault currents properly. Consequently, the relay would lack sufficient
bias during certain external faults. Also, the directional principle and saturation detector may not work properly. This is not a
limitation of the B30, but misapplication of Sources in conjunction with the biased differential principle.
Normally, each Source defining the input to the B30's bus differential zone should be associated with a single physical cur-
rent transformer bank. The only situation when two or more currents may be summed up into a single Source before enter-
ing into the bus zone is when the currents are purely load currents and cannot produce any fault current in any
circumstances.
The status signal of a given ‘source-status’ pair of the dynamic bus replica is a FlexLogic™ operand created to indicate
whether or not the associated circuit (current) is connected to the protected bus zone. Normally, the status signals are to be
created from input contacts wired to appropriate auxiliary contacts of switches and/or breakers.
EXAMPLE 1:
The following figure shows an example of a circuit that could be connected to two separate bus sections. It is assumed that
each section is protected individually by two B30s. Consider the B30 as protecting the Bus Section 1. The current signals
are connected to the relay using a CT bank, say F1, and assigned to a Source, say SRC 1. The status signal of the switch
is brought into the relay as an input contact, say U7a. The input contact can be used directly (say, Cont Ip 1 On), or further
processed using the FlexLogic™ for contact discrepancy filtering or extra security. The pair “SRC 1 - Cont Ip 1 On” defines
the input to the Bus Zone 1.

BUS SECTION 1

BUS SECTION 2

BUS ZONE 1A STATUS

U7a Cont Ip 1 On
BUS
BUS ZONE 1A SOURCE Z1
TM
FLEXLOGIC

SOURCES
F1 SRC 1

B30
836724A3.CDR

Figure 8–2: DYNAMIC BUS REPLICA MECHANISM

If a given circuit cannot be connected to any power system element other than the protected bus, then its status signal
should be fixed using the FlexLogic™ “On” constant.

8-2 B30 Bus Differential Relay GE Multilin

 8 THEORY OF OPERATION 8.2 DYNAMIC BUS REPLICA

8.2.2 CT RATIO MATCHING

The B30 allows for using CTs with various rated secondary currents and transformation ratios. Scaling to a common base is
performed internally by the relay. The maximum allowable ratio mismatch is 32:1. For proper setting of the differential char-
acteristic, it is imperative to understand the common base used by the relay.
The B30 scales the secondary currents to the maximum primary current among the CTs defining a given bus differential
zone: 1 per unit corresponds to the highest rated primary current.
The scaling base is selected automatically by the relay during the configuration phase and is not affected by the dynamic
aspect of the bus differential zone. This means that even though the circuit containing the CT with the maximum rated pri-
mary current is not connected to a given bus zone at a given time, the scaling base does not change.
EXAMPLE 2:
Assume the CTs installed in the circuit defining the BUS ZONE 1 have the following ratings:
• 1A CT: 600:5
• 1B CT: 500:1
• 1C CT: 600:5
• 1D CT: 1000:5
• 1E CT: 500:1
• 1F CT: 600:5
The maximum of 600, 500, 600, 1000, 500, and 600 is 1000 A which is therefore selected as the base upon configuration
of the BUS ZONE 1. 1 per unit (pu) represents 1000A primary.
Note that independently from the ratios and rated secondary currents, the per unit values of the differential current retain
their original meaning regardless of the distribution of the differential current between individual circuits. Assume, for exam-
ple, that the differential current is fed by the inputs 1A and 1B exclusively, and consider two situations:
• The 1A input supplies 1kA primary, and the 1B input supplies 2kA primary. The currents are in phase. The pu current of
the 1A source is 1000 A : (600:5) : 5A/pu = 1.67 pu. The pu current of the 1B source is 2000 A : (500:1) : 1A/pu = 4.00
pu. The pu differential current is (1000A + 2000A) : 1000A = 3.00 pu.
• The 1A input supplies 2kA primary, and the 1B input supplies 1kA primary. The currents are in phase. The pu current of
the 1A source is 2000 A : (600:5) : 5A/pu = 3.33 pu. The pu current of the 1B source is 1000 A : (500:1) : 1A/pu = 2.00
pu. The pu differential current is (1000A + 2000A) : 1000A = 3.00 pu.

GE Multilin B30 Bus Differential Relay 8-3

 8.3 DIFFERENTIAL PRINCIPLE 8 THEORY OF OPERATION

8.3DIFFERENTIAL PRINCIPLE 8.3.1 BIASED DIFFERENTIAL CHARACTERISTIC

The B30 uses a dual-slope dual-breakpoint operating characteristic as shown in the figure below.
The PICKUP setting is provided to cope with spurious differential signals when the bus carries a light load and there is no
effective restraining signal.
The first breakpoint (LOW BPNT) is provided to specify the limit of guaranteed linear operation of the CTs in the most unfa-
vorable conditions such as high residual magnetism left in the magnetic cores or multiple autoreclosure shots. This point
defines the upper limit for the application of the first slope (LOW SLOPE).
The second breakpoint (HIGH BPNT) is provided to specify the limits of operation of the CTs without any substantial satura-
tion. This point defines the lower limit for the application of the second slope (HIGH SLOPE).

|Id|
differential

OPERATE
HIGH
SLOPE

BLOCK

LOW
SLOPE Ir
PICKUP
HIGH BPNT
LOW BPNT

restraining

836720A1.CDR

Figure 8–3: BIASED OPERATING CHARACTERISTIC

The higher slope used by the B30 acts as an actual percentage bias regardless of the value of the restraining signal. This is
so because the boundary of the operating characteristic in the higher slope region is a straight line intersecting the origin of
the ‘differential - restraining’ plane. The advantage of having a constant bias specified by the HIGH SLOPE setting creates an
obstacle of a discontinuity between the first and second slopes. This is overcome by using a smooth approximation (cubic
spline) of the characteristic between the lower and higher breakpoints. Consequently, the characteristic ensures:
• a constant percentage bias of LOW SLOPE for restraining currents below the lower breakpoint of LOW BPNT,
• a constant percentage bias of HIGH SLOPE for restraining currents above the higher breakpoint of HIGH BPNT, and
• a smooth transition from the bias of LOW SLOPE to HIGH SLOPE between the breakpoints.

8-4 B30 Bus Differential Relay GE Multilin

 8 THEORY OF OPERATION 8.3 DIFFERENTIAL PRINCIPLE

8.3.2 DIFFERENTIAL AND RESTRAINING CURRENTS

The differential current is produced as a sum of the phasors of the input currents of a differential bus zone taking into
account the status signals of the currents, i.e. applying the dynamic bus replica of the protected zone. The differential cur-
rent is scaled to the maximum rated primary current as explained in Section 8.1 Introduction. The scaling must be taken
into account when setting the PICKUP value of the biased differential characteristic and the HIGH SET operating point of the
unbiased differential function.
The restraining current is produced as a maximum of the magnitudes of the phasors of the zone input currents taking into
account the status signals of the currents, i.e. applying the dynamic bus replica of the protected bus zone. The restraining
current is scaled to the maximum rated primary current as explained in Section 8.1 Introduction. The scaling must be taken
into account when setting the breakpoints of the biased differential characteristic.
The “maximum of” definition of the restraining signal biases the relay toward dependability without jeopardizing security as
the relay uses additional means to cope with CT saturation on external faults. An additional benefit of this approach is that
the restraining signal always represents a physical – compared to an “average” or “sum of” – current flowing through the CT
that is most likely to saturate during given external fault. This brings more meaning to the breakpoint settings of the operat-
ing characteristic.
The following example is provided with respect to the breakpoint settings.
EXAMPLE 3:
Proceed with the previous example (see page 8–2) and assume that taking into account the relevant factors such as prop-
erties of the CTs themselves, resistance of the leads and burden of the CTs, the following primary currents are guaranteed
to be transformed without significant saturation:
• 1A CT: 6.0 kA
• 1B CT: 7.5 kA
• 1C CT: 5.0 kA
• 1D CT: 13.0 kA
• 1E CT: 8.0 kA
• 1F CT: 9.0 kA
As having the lowest primary current guaranteeing operation without saturation, the CT associated with the 1C input is
most exposed to saturation. During an external fault on the 1C circuit, the 1C CT will carry the fault current contributed by
potentially all the remaining circuits. The fault current is higher than any contributing current, and therefore, the current of
the 1C CT will become the restraining signal for the biased differential characteristic for external faults on the 1C circuit.
Consequently, the higher breakpoint of the differential characteristic (HIGH BPNT) should be set not higher than
5000A : 1000A = 5 pu (1000A is the base unit; see page 8–2 for the example).
The same approach applies to the setting of the lower breakpoint, LOW BPNT.

GE Multilin B30 Bus Differential Relay 8-5

 8.3 DIFFERENTIAL PRINCIPLE 8 THEORY OF OPERATION

8.3.3 ENHANCED SECURITY

In order to enhance the performance of the B30, the differential characteristic is divided into two regions having diverse
operating modes as shown in following diagram.
The first region applies to comparatively low differential currents and has been introduced to deal with CT saturation on low-
current external faults. Certain distant external faults may cause CT saturation due to extremely long time constants of the
DC component or multiple autoreclosure shots. The saturation, however, is difficult to detect in such cases. Additional secu-
rity via the “directional check” is permanently applied to this region without regard to the saturation detector.

Region 2
(high differential
differential

currents)

Region 1
(low differential
currents)

restraining
836725A1.CDR

Figure 8–4: TWO REGIONS OF DIFFERENTIAL CHARACTERISTIC

The second region includes the remaining portion of the differential characteristic and applies to comparatively high differ-
ential currents. If, during an external fault, the spurious differential current is high enough so that the differential-restraining
current trajectory enters the second region, then saturation is guaranteed to be detected by the saturation detector.
The B30 operates in the 2-out-of-2 mode in the first region of the differential characteristic. Both differential and directional
principles (see Sections 8.3 Differential Principle and 8.4 Directional Principle) must confirm an internal fault in order for the
biased differential element to operate.
The relay operates in the dynamic 1-out-of-2 / 2-out-of-2 mode in the second region of the differential characteristic. If the
saturation detector (see Section 8.5 Saturation Detector) does not detect CT saturation, the differential protection principle
alone is capable of operating the biased differential element. If CT saturation is detected, both differential and directional
principles must confirm an internal fault in order for the biased differential element to operate.
Because of diverse operating modes in the first and second regions of the differential characteristic, the user gains double
control over the dependability and security issues. The first level includes slopes and breakpoints of the characteristic with
regard to the amount of the bias. The second level includes control over the split between the first and second regions of
the characteristic.

8 The unbiased differential element responds to the differential current alone. The saturation detector and directional element
do not apply to the unbiased differential element.

8-6 B30 Bus Differential Relay GE Multilin

 8 THEORY OF OPERATION 8.4 DIRECTIONAL PRINCIPLE

8.4DIRECTIONAL PRINCIPLE 8.4.1 CURRENT DIRECTIONAL PROTECTION

For better security, the B30 uses the current directional protection principle to dynamically supervise the main current differ-
ential function. The directional principle is in effect permanently for low differential currents (Region 1 in Figure 8–4: Two
Regions of Differential Characteristic) and is switched on dynamically for large differential currents (Region 2 in the same
figure) by the saturation detector (see Section 8.5: Saturation Detector) upon detecting CT saturation.
The directional principle responds to a relative direction of the fault currents. This means that a reference signal, such as
bus voltage, is not required. The directional principle declares that
• if all of the fault currents flow in one direction, the fault is internal, or
• if at least one fault current flows in an opposite direction compared with the sum of the remaining currents, the fault is
external.
The directional principle is implemented in two stages.
First, based on the magnitude of a given current, it is determined whether the current is a fault current. If so, its relative
phase relation has to be considered. The angle check must not be initiated for the load currents as the direction will be out
of the bus even during internal faults. The auxiliary comparator of this stage applies an adaptable threshold. The threshold
is a fraction of the restraining current.
Second, for – and only for – the selected fault currents, the phase angle between a given current and the sum of all the
remaining currents is checked. The sum of all the remaining currents is the differential current less the current under con-
sideration. Therefore, for each, say the pth, current to be considered, the angle between the I P and I D – I P phasors is to be
checked.
Ideally, during external faults, the said angle is close to 180° (see below); and during internal faults - close to 0 degrees.
External Fault Conditions

⎛ Ip ⎞
imag ⎜ ⎟
⎜ ID − I p ⎟ OPERATE
⎝ ⎠
BLOCK
⎛ Ip ⎞
ID - Ip real ⎜ ⎟
Ip ⎜ ID − I p ⎟
⎝ ⎠

BLOCK
OPERATE

836726A2.CDR

Figure 8–5: DIRECTIONAL PRINCIPLE OPERATION DURING EXTERNAL FAULTS

Internal Fault Conditions

⎛ Ip ⎞
imag ⎜ ⎟
⎜ ID − I p ⎟
8
⎝ ⎠ OPERATE
BLOCK
⎛ Ip ⎞
ID - Ip real ⎜ ⎟
⎜ ID − I p ⎟
⎝ ⎠
Ip

BLOCK
OPERATE

836727A2.CDR

Figure 8–6: DIRECTIONAL PRINCIPLE OPERATION DURING INTERNAL FAULTS

The B30 implementation calculates the maximum angle for the considered currents and compares it against a fixed thresh-
old of 90°. The flag indicating whether the directional protection principle is satisfied is available as the FlexLogic™ oper-
and BUS 1(2) DIR.

GE Multilin B30 Bus Differential Relay 8-7

 8.5 SATURATION DETECTOR 8 THEORY OF OPERATION

8.5SATURATION DETECTOR 8.5.1 CT SATURATION DETECTION

The saturation detector of the B30 takes advantage of the fact that any CT operates correctly for a short period of time even
under very large primary currents that would subsequently cause a very deep saturation. As a result of that, in the case of
an external fault, the differential current stays very low during the initial period of linear operation of the CTs while the
restraining signal develops rapidly. Once one or more CTs saturate, the differential current will increase. The restraining sig-
nal, however, yields by at least a few milliseconds. During internal faults, both the differential and restraining currents
develop simultaneously. This creates characteristic patterns for the differential - restraining trajectory as depicted below.

N
differential

TTER

N
TER
A
ULT P

PAT
OPERATE

T
FA

AUL
RNAL

AL F
BLOCK

ERN
INTE

EXT
ERN
EXTERNAL FAULT PATT
restraining
836728A1.CDR

Figure 8–7: CT SATURATION DETECTION – INTERNAL AND EXTERNAL FAULT PATTERNS

The CT saturation condition is declared by the saturation detector when the magnitude of the restraining signal becomes
larger than the higher breakpoint (HIGH BPNT) and at the same time the differential current is below the first slope (LOW
SLOPE). The said condition is of a transient nature and requires a seal-in. A special logic in the form of a “state machine” is
used for this purpose as depicted in Figure 8–8: State Machine for Saturation Detector.
As the phasor estimator introduces a delay into the measurement process, the aforementioned saturation test would fail to
detect CT saturation occurring very fast. In order to cope with very fast CT saturation, another condition is checked that
uses relations between the signals at the waveform level. The basic principle is similar to that described above. Addition-
ally, the sample-based stage of the saturation detector uses the time derivative of the restraining signal (di/dt) to better
trace the saturation pattern shown in the above diagram.
The saturation detector is capable of detecting saturation occurring in approximately 2 ms into a fault. It is worth emphasiz-
ing that the saturation detector, although having no dedicated settings, uses the main differential characteristic for proper
operation. This aspect must be kept in mind when setting the characteristic as its parameters must retain their original
meaning.
The operation of the saturation detector is available as the FlexLogic™ operand BUS 1(2) SAT.

NORMAL

SAT := 0

8 The differential
current below the saturation
first slope for a condition
certain period of
time
EXTERNAL
FAULT

SAT := 1
The differential-
The differential restraining trajectory
characteristic out of the differential
entered characteristic for a
certain period of time
EXTERNAL
FAULT and CT
SATURATION

SAT := 1
836729A1.CDR

Figure 8–8: STATE MACHINE FOR SATURATION DETECTOR

8-8 B30 Bus Differential Relay GE Multilin

 8 THEORY OF OPERATION 8.6 OUTPUT LOGIC AND EXAMPLES

8.6OUTPUT LOGIC AND EXAMPLES 8.6.1 OUTPUT LOGIC

The biased differential characteristic uses the output logic shown below.
For low differential signals, the biased differential element operates on the 2-out-of-2 basis utilizing both the differential and
directional principles.
For high differential signals, the directional principle is included only if demanded by the saturation detector (dynamic 1-out-
of-2 / 2-out-of-2 mode). Typically, the directional principle is slower, and by avoiding using it when possible, the B30 gains
speed.
The dynamic inclusion/exclusion of the directional principle is not applied for the low differential currents but is included per-
manently only because it is comparatively difficult to reliably detect CT saturation occurring when the currents are small, i.e.
saturation due to extremely long time constant of the DC component or due to multiple autoreclosure actions.

DIFL
AND

DIR biased bus

OR differential
OR DIFBIASED

SAT
AND

DIFH 836730A1.CDR

Figure 8–9: BIASED DIFFERENTIAL OUTPUT LOGIC

8.6.2 INTERNAL AND EXTERNAL FAULT EXAMPLE

Two examples of relay operation are presented: an external fault with heavy CT saturation and an internal fault.
The protected bus includes six circuits connected to CT banks F1, F5, M1, M5, U1 and U5, respectively. The circuits F1,
F5, M1, M5 and U5 are capable of feeding some fault current; the U1 circuit supplies a load. The F1, F5 and U5 circuits are
significantly stronger than the F5 and M1 connections.
The M5 circuit contains the weakest (most prone to saturation) CT of the bus.
Figure 8-10 presents the bus currents and the most important logic signals for the case of an external fault. Despite very
fast and severe CT saturation, the B30 remains stable.
Figure 8-11 presents the same signals but for the case of an internal fault. The B30 trips in 10 ms (fast form-C output con-
tact).

GE Multilin B30 Bus Differential Relay 8-9

 8

8-10
200

150

100 ~1 ms
50

-50

-100
8.6 OUTPUT LOGIC AND EXAMPLES

-150

-200
0.06 0.07 0.08 0.09 0.1 0.11 0.12

The bus differential The CT saturation flag

protection element is set safely before the
picks up due to heavy pickup flag

B30 Bus Differential Relay

CT saturation

Despite heavy CT
saturation the

Figure 8–10: EXTERNAL FAULT EXAMPLE

external fault current
is seen in the
opposite direction

The element
The
does not
directional flag
maloperate
is not set

836735A1.CDR
8 THEORY OF OPERATION

GE Multilin
GE Multilin
8 THEORY OF OPERATION

The bus differential

protection element
picks up
The saturation
flag is not set - no
directional

B30 Bus Differential Relay

decision required

Figure 8–11: INTERNAL FAULT EXAMPLE

All the fault currents
are seen in one
direction

The
The element directional
operates in flag is set
10ms

836736A1.CDR
8.6 OUTPUT LOGIC AND EXAMPLES

8-11
8
 8.6 OUTPUT LOGIC AND EXAMPLES 8 THEORY OF OPERATION

8-12 B30 Bus Differential Relay GE Multilin

 9 APPLICATION OF SETTINGS 9.1 OVERVIEW

9 APPLICATION OF SETTINGS 9.1OVERVIEW 9.1.1 INTRODUCTION

The B30 is a high-speed low-impedance microprocessor-based current differential relay for power system busbars. The
relay is limited to six circuits. The B30 incorporates the dynamic bus replica mechanism that allows for protecting buses
with circuits interconnectable between various sections but with single current measurement points.
As explained in the Theory of Operation chapter, the relay uses a dual-slope dual-breakpoint differential characteristic with
the restraint signal created as the maximum among the magnitudes of the circuit connected to the protected bus. The low-
impedance operating principle is enhanced by the use of the Saturation Detector and a current directional principle.
This chapter provides an example of setting calculations for a sample bus. The selected example includes various bus con-
figurations to clarify a number of typical situations. Both the bus configuration and numerical data used are not meant to
reflect any specific utility practice or design standards.
It is also assumed that the CTs have been selected without considering a B30 application, but the B30 settings are to be
calculated for proper relay application. The CT data used in this example are kept to a minimum and in a generic form. The
CT data does not reflect any particular notation or national standards.
The analysis provided in this chapter has been performed with the following goals:
• The limits of linear operation of the CTs considering zero remanent flux have been determined in order to select the
high breakpoint settings of the biased differential characteristic.
• The limits of linear operation of the CTs considering a remanent flux of 80% have been determined in order to select
the low breakpoint settings of the biased differential characteristic.
• Saturation of the CTs has been analyzed in order to select the higher slope of the biased differential characteristic and
the high set differential overcurrent setting.
The analysis tools and safety margins applied are examples only and do not reflect any particular protection philosophy.
Typically, for the CT saturation related calculations, it is sufficient to consider the weakest (most prone to saturation) CT
connected to the bus and the total bus fault current combined with the longest time constant among all the circuits con-
nected to the bus. This chapter provides more detailed analysis (see the Slopes and High Set Threshold section) in order to
illustrate the idea of using setting groups to enhance the B30 performance when the bus configuration changes (see the
Enhancing Relay Performance section).

9.1.2 SAMPLE BUSBAR AND DATA

The following figure shows a double bus arrangement with North and South buses. This station has five circuits (C-1
through C-5) and a tiebreaker (B-7). Circuit C-1 is connected to the North bus; circuits C-2, C-3 and C-4 can be routed to
either bus via switches S-1 through S-6; circuit C-5 can be connected to either bus via breakers B-5 and B-6.

C-3 C-5
NORTH BUS

B-1 S-1 S-3 S-5

B-5

CT-1 CT-7
CT-2 B-2 CT-3 B-3 CT-4 B-4 CT-5

B-7

CT-6

9
CT-8
B-6
S-2 S-4 S-6

SOUTH BUS

C-1 C-2 C-4

836731A2.CDR

Figure 9–1: SAMPLE BUS CONFIGURATION

GE Multilin B30 Bus Differential Relay 9-1

 9.1 OVERVIEW 9 APPLICATION OF SETTINGS

The following table shows the assumed short circuit contributions of the connected circuits and their DC time constants.

Table 9–1: BASIC FAULT DATA OF THE CONNECTED CIRCUIT

CIRCUIT IFAULT (KA) TDC (MS)
C-1 0.00 N/A
C-2 0.00 N/A
C-3 6.00 5
C-4 5.00 30
C-5 3.00 40

The basic CT data is presented in the table below. The magnetizing characteristics of the three different types of CTs used
in this example are shown in the following figure.

Table 9–2: BASIC CT DATA

CT RATIO VSAT (V) RCTSEC (Ω) LEADS (M)
CT-1 600:5 144 0.34 210
CT-2 600:5 144 0.34 205
CT-3 1200:5 288 0.64 200
CT-4 1000:5 240 0.54 200
CT-5, CT-6 1000:5 240 0.54 180
CT-7, CT-8 1200:5 288 0.64 200

836732A4.CDR

9 Figure 9–2: APPROXIMATE CT MAGNETIZING CHARACTERISTICS

9-2 B30 Bus Differential Relay GE Multilin

 9 APPLICATION OF SETTINGS 9.2 ZONING AND DYNAMIC BUS REPLICA

9.2ZONING AND DYNAMIC BUS REPLICA 9.2.1 DESCRIPTION

The figures in this section show the adopted protection zoning for the two bus sections.
To provide the bus differential zoning as shown in the figures, eight currents need to be measured. Consequently, the pro-
tection cannot be accomplished by one B30. However, as each bus has not more than six connections, two B30s can be
used.

9.2.2 NORTH BUS ZONE

With reference to the following diagram, the North bus differential zone is bounded by the following CTs: CT-1, CT-2 (if S-1
closed), CT-3 (if S-3 closed), CT-4 (if S-5 closed), CT-5 and CT-8. The North bus protection should operate the following
breakers: B-1, B-2 (if S-1 closed), B-3 (if S-3 closed), B-4 (if S-5 closed), B-5 and B-7.
Consequently, the B30 for the North bus should be wired and configured as follows:
• CT-1 currents should be configured as SRC 1 and used as the source 1A of the bus differential zone 1 together with
the FlexLogic™ “On” constant for the status.
• CT-2 currents should be configured as SRC 2 and used as the source 1B of the bus differential zone 1 together with
the status of the S-1 switch.
• CT-3 currents should be configured as SRC 3 and used as the source 1C of the bus differential zone 1 together with
the status of the S-3 switch.
• CT-4 currents should be configured as SRC 4 and used as the source 1D of the bus differential zone 1 together with
the status of the S-5 switch.
• CT-5 currents should be configured as SRC 5 and used as the source 1E of the bus differential zone 1 together with
the FlexLogic™ “On” constant for the status.
• CT-8 currents should be configured as SRC 6 and used as the source 1F of the bus differential zone 1 together with
the FlexLogic™ “On” constant for the status.
• The trip signal should be routed directly to the B-1, B-5 and B-7 breakers while it should be supervised by the status of
S-1, S-3 and S-5 for the B-2, B-3 and B-4 breakers, respectively.
Depending on utility practice, extra security may be required with respect to the status signals. This may include bringing in
both the normally opened and normally closed contacts of a switch as well as status of a peer switch (S-1 and S-2, for
example). If this is the case, the required security filtering should be accomplished using FlexLogic™ and a single (final)
status operand should be indicated for the status signal when setting the bus differential zone.

C-3 C-5
NORTH BUS

B-1 S-1 S-3 S-5

B-5

CT-1 CT-2 B-2 CT-4 B-4 CT-7

CT-3 B-3
CT-5

B-7

CT-6
CT-8

9
B-6
S-2 S-4 S-6

SOUTH BUS

C-1 C-2 C-4

836733A1.CDR

Figure 9–3: NORTH BUS ZONE

GE Multilin B30 Bus Differential Relay 9-3

 9.2 ZONING AND DYNAMIC BUS REPLICA 9 APPLICATION OF SETTINGS

9.2.3 SOUTH BUS ZONE

The South bus differential zone is bounded by the following CTs: CT-2 (if S-2 closed), CT-3 (if S-4 closed), CT-4 (if S-6
closed), CT-6 and CT-7. The South bus protection should operate the following breakers: B-2 (if S-2 closed), B-3 (if S-4
closed), B-4 (if S-6 closed), B-6 and B-7.
Consequently, the second B30 for the South bus should be wired and configured as follows:
• CT-2 currents should be configured as SRC 1 and used as the source 1A of the bus differential zone 1 together with
the status of the S-2 switch.
• CT-3 currents should be configured as SRC 2 and used as the source 1B of the bus differential zone 1 together with
the status of the S-4 switch.
• CT-4 currents should be configured as SRC 3 and used as the source 1C of the bus differential zone 1 together with
the status of the S-6 switch.
• CT-6 currents should be configured as SRC 4 and used as the source 1D of the bus differential zone 1 together with
the FlexLogic “On” constant for the status.
• CT-7 currents should be configured as SRC 5 and used as the source 1E of the bus differential zone 1 together with
the FlexLogic “On” constant for the status.
• The trip signal should be routed directly to the B-6 and B-7 breakers while it should be supervised by the status of S-2,
S-4 and S-6 for the B-2, B-3 and B-4 breakers, respectively.

C-3 C-5
NORTH BUS

B-1 S-1 S-3 S-5

B-5

CT-1 CT-2 B-2 CT-4 B-4 CT-7

CT-3 B-3
CT-5

B-7

CT-6
CT-8
B-6
S-2 S-4 S-6

SOUTH BUS

C-1 C-2 C-4

836734A1.CDR

Figure 9–4: SOUTH BUS ZONE

9-4 B30 Bus Differential Relay GE Multilin

 9 APPLICATION OF SETTINGS 9.3 BIASED CHARACTERISTIC BREAKPOINTS

9.3BIASED CHARACTERISTIC BREAKPOINTS 9.3.1 DESCRIPTION

The limits of linear operation of the CTs need to be found in order to set the breakpoints of the biased differential character-
istic. The settings for the North and South bus relays are analyzed simultaneously from this point on as the two differential
zones share some CTs and the results of computations apply to both the relays.
For microprocessor-based relays it is justified to assume the burden of the CTs to be resistive. The limits of the linear oper-
ation of a CT, neglecting the effects of the DC component and residual magnetism, can be approximated as follows:
V sat
I max = ---------- (EQ 9.1)
Rs

where: Imax is the maximum secondary current transformed without saturation (AC component only, no
residual magnetism),
Rs is the total burden resistance,
Vsat is the saturation voltage of the CT.
The total burden resistance depends on both the fault type and connection of the CTs. For single-line-to-ground faults and
CTs connected in Wye, the burden resistance is calculated as:
R s = 2R lead + R CTsec + R relay (EQ 9.2)

where: Rlead is the lead resistance (one way, hence the factor of 2)
RCTsec is the secondary CT resistance
Rrelay is the relay input resistance.
Assuming 0.003 Ω/m lead resistance and approximating the B30 input resistance for the 5A input CTs as 0.2 VA / (5 A)2 or
0.008 Ω, the limits of the linear operation of the CTs have been calculated and presented in the Limits of Linear Operations
of the CTs table.

9.3.2 HIGH BREAKPOINT

As an external fault may happen on any of the connected circuits, threatening saturation of any of the CTs, the minimum
value of the linear operation limit should be taken as the HIGH BPNT setting. The limit of linear operation that neglects both
the residual magnetism and the effect of the DC component should be the base for setting the higher breakpoint of the
biased differential characteristic.
The B30 requires the breakpoints to be entered as ‘pu’ values. The relay uses the largest primary current of the CTs bound-
ing the bus differential zone as a base for the pu settings. Both the North and South buses have the largest primary current
of the CTs of 1200 A (CT-7 and CT-8), thus upon configuration of the relays, 1200 A is automatically selected as base for
the pu quantities. With a given Ibase current, the limits of linear operation have been recalculated to pu values as follows:
I max ( secondary )
I max ( pu ) = ----------------------------------- × CT ratio (EQ 9.3)
I base

Table 9–3: LIMITS OF LINEAR OPERATIONS OF THE CTS

CT RS (Ω) IMAX (A SEC) IMAX (PU) IMAX (PU)
(NO REMANENCE) (80% REMANENCE)
CT-1 1.61 89.55 8.96 1.79
CT-2 1.58 91.25 9.13 1.83
CT-3 1.85 155.84 31.17 6.23
CT-4 1.75 137.30 22.88 4.58 9
CT-5, CT-6 1.63 147.42 24.57 4.91
CT-7, CT-8 1.85 155.84 31.17 6.23

The third and fourth columns of the above table have the following significance.

GE Multilin B30 Bus Differential Relay 9-5

 9.3 BIASED CHARACTERISTIC BREAKPOINTS 9 APPLICATION OF SETTINGS

If an external fault occurs on circuit C-1, CT-1 will carry the fault current. As the fault current is higher than any of the other
currents, the current supplied by CT-1 will be used as the restraint signal. CT-1 is guaranteed to saturate if the current
exceeds 89.55 A secondary, or 17.9 times its rated current, or 8.96 pu of the bus differential zone. Consequently, consider-
ing CT-1, the value of 8.96 pu should be used as the higher breakpoint of the characteristic.
Considering CTs that could be connected (depending on the positions of the switches) to the North bus, the HIGH BPNT for
the North bus zone should be selected as the minimum of (8.96, 9.13, 31.17, 22.88, 24.57, 31.17), or 8.96 pu.
Considering CTs that could be connected (depending on the positions of the switches) to the South bus, the HIGH BPNT for
the South bus zone should be selected as the minimum of (9.13, 31.17, 22.88, 24.57, 31.17), or 9.13 pu.

9.3.3 LOW BREAKPOINT

The DC component in the primary current may saturate a given CT even with the AC current below the suggested value of
the higher breakpoint. The relay copes with this threat by using the Saturation Detector and applying a 2-out-of-2 operating
principle upon detecting saturation.
The residual magnetism (remanence) left in the core of a CT can limit the linear operation of the CT significantly. It is justi-
fied to assume that the residual flux could be as high as 80% of the saturation level leaving only 20% to accommodate the
flux component created by the primary current. This phenomenon may be reflected by reducing the saturation voltage in
the calculations by the factor of 100% / 20%, or 5. This, in turn, is equivalent to reducing the limit of linear operation by the
factor of 5, hence the last column in the Limits of Linear Operations of the CTs table.
For example, if the residual flux left in the core of the CT-1 is as high as 80% of its saturation level, the CT will saturate at
17.92 A secondary, or 3.58 times its rated current, or at 1.79 pu of the bus differential zone.
The reduced limit of linear operation should be used as the lower breakpoint of the biased differential characteristic (the
LOW BPNT setting). In this way the interval spanning from the lower to higher breakpoints covers the indistinct area of possi-
ble saturation due to the random factor of residual magnetism.
The LOW BPNT should be set at 1.79 pu for the North bus zone, and at 1.83 pu for the South bus zone.
A combination of very high residual magnetism and a DC component with a long time constant may saturate a given CT
even with the AC current below the suggested value of the lower breakpoint. The relay copes with this threat by using a 2-
out-of-2 operating mode for low differential currents.

9-6 B30 Bus Differential Relay GE Multilin

 9 APPLICATION OF SETTINGS 9.4 SLOPES AND HIGH SET THRESHOLD

9.4SLOPES AND HIGH SET THRESHOLD 9.4.1 DESCRIPTION

To set the higher slope and threshold of the high set (unbiased) differential operation, external faults must be analyzed.
Consider an external fault for the North bus relay. It is justified to assume bus configurations that give maximum stress to
the maximum number of CTs. For this purpose we will assume the tie breaker, B-7 closed; all the circuitry capable of sup-
plying the fault current to be in service; moreover, they are connected to the South bus in order to analyze the CT-7 and CT-
8 carrying the fault current.

9.4.2 EXTERNAL FAULTS ON C-1

The table below presents the results of analysis of an external fault on circuit C-1 (C-1 is connected to the North bus; C-3,
C-4, and C-5 are connected to the South bus).
For security reasons, it has been assumed that the fault current being a sum of several contributors (C-3, C-4, and C-5 in
this case) has a time constant of the DC component of the maximum among the time constants of the contributors. The
fault current is supplied from circuits C-3, C-4, and C-5 connected to the South bus, thus through CT-3, CT-4, and CT-6.
The current passes through the tie breaker threatening saturation of CT-7 and CT-8.
By comparing the secondary currents (column 3 in the table below) with the limits of linear operation for the CTs (column 4
in the Limits of Linear Operations of the CTs table earlier), it is concluded that CT-1 will saturate during this fault, producing
a spurious differential signal for the North bus zone differential protection. All other CTs will not saturate due to the AC com-
ponents. The amount of the spurious differential current (magnetizing current of CT-1) can be calculated using the burden,
magnetizing characteristic and primary current of the noted CT by solving the following equations:

2 2
I relay = I s – I magnetizing
(EQ 9.4)
I relay × R s = V magnetizing

For Is = 116.67 A, Rs = 1.61 Ω and the characteristic shown earlier in the Approximate CT Magnetizing Characteristics fig-
ure, the solution is Imagnetizing = 29.73 A, Irelay = 112.8 A.
The magnetizing current of the saturated CT-1 will appear to the differential element protecting the North bus as a differen-
tial signal of 29.73 A, while the restraint signal will be the maximum of the bus currents (112.8 A in this case). Conse-
quently, the higher slope of the characteristic should not be lower than 29.73 A / 112.8 A, or 26%, and the pick up of the
high set differential elements should not be lower than 29.73 A, or 2.97 pu.
The CTs identified as operating in the linear mode as far as the AC components are considered may, however, saturate due
to the DC components. Saturation will not occur if V sat > I s × R s × ( 1 + ω × T dc ) , where ω is radian system frequency (2πf).
( Vsat ⁄ I s R s ) – 1⎞
If the above condition is violated, saturation will occur but not before: T sat = – T dc × ln ⎛ 1 – ---------------------------------------
-
⎝ ωT dc ⎠
Columns 6 and 7 of the table below summarize the DC saturation threat for the fault on C-1. CT-4, CT-6, CT-7, and CT-8
may saturate due to the DC components and may generate spurious differential signal for both the North and South bus
relays depending on the bus configuration. The saturation will not occur before 4.7 ms and will be detected by the Satura-
tion Detector.
The transient saturation of the CTs due to the DC component may be neglected when setting the slopes of the characteris-
tic as the saturation will be detected and the relay will use the current directional principle. It must however, be taken into
account when setting the high set (unbiased) differential element.

Table 9–4: EXTERNAL FAULT CALCULATIONS ON C-1

CT IFAULT (KA) IFAULT (A SEC) TDC (MS) AC DC TSAT (MS)

CT-1 14.0 116.67 40

SATURATION
Yes
SATURATION
Yes N/A
9
CT-2 0 0.00 N/A No No N/A
CT-3 6.0 25.00 5 No No N/A
CT-4 5.0 25.00 30 No Yes 15.19
CT-6 3.0 15.00 40 No Yes 35.25
CT-7, CT-8 14.0 58.33 40 No Yes 4.70

GE Multilin B30 Bus Differential Relay 9-7

 9.4 SLOPES AND HIGH SET THRESHOLD 9 APPLICATION OF SETTINGS

9.4.3 EXTERNAL FAULTS ON C-2

The following table presents the results of analysis of an external fault on circuit C-2 (C-2 is connected to the North bus; C-
3, C-4 and C-5 are connected to the South bus).
By comparing the secondary currents (column 3 in the following table) with the limits of linear operation for the CTs (column
4 shown earlier in the Limits of Linear Operations of the CTs table) it is concluded that CT-2 will saturate during this fault
producing a spurious differential signal. All other CTs will not saturate due to the AC components. The amount of the spuri-
ous differential current (magnetizing current of CT-2) can be calculated using the burden, magnetizing characteristic and
the primary current of the said CT.
For Is = 116.67 A, Rs = 1.23 Ω and the characteristic shown earlier in the Approximate CT Magnetizing Characteristics fig-
ure, the solution is Imagnetizing = 27.69 A, Irelay = 113.3 A.
The magnetizing current of the saturated CT-2 will appear to the differential element protecting the North bus as a differen-
tial signal of 27.69 A, while the restraint signal will be the maximum of the bus currents (113.3 A). Consequently, the higher
slope of the characteristic should not be lower than 27.69 A / 113.3 A, or 24% and the pick up of the high-set differential
elements should not be lower than 27.69 A, or 2.77 pu.
Columns 6 and 7 of the following table summarize the DC saturation threat for the fault on C-2. CT-4, CT-6, CT-7, and CT-
8 may saturate due to the DC components and may generate spurious differential signal for both the North and South bus
relays depending on the bus configuration. The saturation will not occur before 4.7 ms and will be detected by the Satura-
tion Detector.

Table 9–5: EXTERNAL FAULT CALCULATIONS ON C-2

CT IFAULT (KA) IFAULT (A SEC) TDC (MS) AC DC TSAT (MS)
SATURATION SATURATION
CT-1 0 0.00 N/A No No N/A
CT-2 14.0 116.67 40 Yes Yes N/A
CT-3 6.0 25.00 5 No No N/A
CT-4 5.0 25.00 30 No Yes 15.19
CT-6 3.0 15.00 40 No Yes 35.25
CT-7, CT-8 14.0 58.33 40 No Yes 4.70

9.4.4 EXTERNAL FAULTS ON C-3

The following table presents the results of analysis of an external fault on circuit C-3 (C-3 is connected to the North bus; C-
4 and C-5 are connected to the South bus).
By comparing the secondary currents (column 3 in the table below) with the limits of linear operation for the CTs (column 4
in the Limits of Linear Operations of the CTs table shown earlier), it is concluded that none of the CTs will saturate due to
the AC currents during this fault.
Columns 6 and 7 of the table below summarize the DC saturation threat for the fault on C-3. CT-3, CT-4, CT-6, CT-7, and
CT-8 may saturate due to the DC components and may generate a spurious differential signal for both the North and South
bus relays depending on the bus configuration. The saturation will not occur before 11.18 ms and will be detected by the
Saturation Detector.

Table 9–6: CALCULATIONS FOR THE EXTERNAL FAULTS ON C-3

CT IFAULT (KA) IFAULT (A SEC) TDC (MS) AC DC TSAT (MS)
9 CT-1 0 0.00 N/A
SATURATION
No
SATURATION
No N/A
CT-2 0 0.00 N/A No No N/A
CT-3 8.0 33.33 40 No Yes 11.18
CT-4 5.0 25.00 30 No Yes 15.19
CT-6 3.0 15.00 40 No Yes 35.25
CT-7, CT-8 8.0 33.33 40 No Yes 11.18

9-8 B30 Bus Differential Relay GE Multilin

 9 APPLICATION OF SETTINGS 9.4 SLOPES AND HIGH SET THRESHOLD

9.4.5 EXTERNAL FAULTS ON C-4

The following table presents the results of analysis of an external fault on circuit C-4 (C-4 is connected to the North bus; C-
3 and C-5 are connected to the South bus).
By comparing the secondary currents (column 3 in the table below) with the limits of linear operation for the CTs (column 4
in the Limits of Linear Operations of the CTs table shown earlier), it is concluded that none of the CTs will saturate due to
the AC currents during this fault.
Columns 6 and 7 of the following table summarize the DC saturation threat for the fault on C-4. CT-4, CT-6, CT-7, and CT-
8 may saturate due to the DC components and may generate a spurious differential signal for both the North and South bus
relays depending on the bus configuration. The saturation will not occur before 5.85 ms and will be detected by the Satura-
tion Detector.

Table 9–7: EXTERNAL FAULT CALCULATIONS ON C-4

CT IFAULT (KA) IFAULT (A SEC) TDC (MS) AC DC TSAT (MS)
SATURATION SATURATION
CT-1 0 0.00 N/A No No N/A
CT-2 0 0.00 N/A No No N/A
CT-3 6.0 25.00 5 No No N/A
CT-4 9.0 45.00 40 No Yes 5.85
CT-6 3.0 15.00 40 No Yes 35.25
CT-7, CT-8 9.0 37.50 40 No Yes 9.40

9.4.6 EXTERNAL FAULTS ON C-5

The following table presents the results of analysis of an external fault on circuit C-5 (C-5 is connected to the North bus; C-
3 and C-4 are connected to the South bus).
By comparing the secondary currents (column 3 in the table below) with the limits of linear operation for the CTs (column 4
in the Limits of Linear Operations of the CTs table shown earlier), it is concluded that none of the CTs will saturate due to
the AC currents during this fault.
Columns 6 and 7 of the following table summarize the DC saturation threat for the fault on C-5. CT-4, CT-5, CT-7, and CT-
8 may saturate due to the DC components and may generate a spurious differential signal for both the North and South bus
relays depending on the bus configuration. The saturation will not occur before 4.83 ms and will be detected by the Satura-
tion Detector.

Table 9–8: EXTERNAL FAULT CALCULATIONS ON C-5

CT IFAULT (KA) IFAULT (A SEC) TDC (MS) AC DC TSAT (MS)
SATURATION SATURATION
CT-1 0 0.00 N/A No No N/A
CT-2 0 0.00 N/A No No N/A
CT-3 6.0 25.00 5 No No N/A
CT-4 5.0 25.00 30 No Yes 15.19
CT-5 11.0 55.00 30 No Yes 4.83
CT-7, CT-8 11.0 45.83 30 No Yes 7.16

GE Multilin B30 Bus Differential Relay 9-9

 9.5 BUS DIFFERENTIAL SETTINGS 9 APPLICATION OF SETTINGS

9.5BUS DIFFERENTIAL SETTINGS 9.5.1 DESCRIPTION

Taking the previous analysis from this chapter into account, the settings have been calculated as shown in below.

Table 9–9: NORTH BUS DIFFERENTIAL PROTECTION SETTINGS

SETTING VALUE COMMENTS
PICKUP 0.1 pu Default value. Lower or higher values may be entered upon security/dependability
requirements. The pu value is for the base of 1200A. This means the actual pickup is
120 A primary.
LOW SLOPE 25% Default value. Lower or higher values may be entered upon security/dependability
requirements.
LOW BPNT 1.79 pu None of the CTs will saturate for ac currents below 1.79 pu even with 80% remanence.
The dc component, however, combined with the remanence may saturate some CTs
even for currents below 1.79 pu. The B30 copes with saturation using the current
directional principle.
HIGH SLOPE 60% Default value. Lower or higher values may be entered upon security/dependability
requirements. The value of 60% ensures that the differential characteristic alone
(without the directional principle) will work correctly under ac saturation of the CTs
(26% of spurious differential during the fault on C-1 saturating CT-1).
HIGH BPNT 8.96 None of the CTs will saturate for ac currents below 8.96 pu. The dc component,
however, may saturate some CTs even for currents below 8.96 pu. The B30 copes with
saturation using the current directional principle.
HIGH SET 5.94 The maximum spurious differential current is 2.97 pu. Due to limited accuracy of
analysis and the effect of dc saturation a security factor of 2 has been adopted. The
highest internal fault current is 14kA, or 11.67 pu giving a good chance to clear a
number of faults by the unbiased differential operation.

Table 9–10: SOUTH BUS DIFFERENTIAL PROTECTION SETTINGS

SETTING VALUE COMMENTS
PICKUP 0.1 pu Default value. Lower or higher values may be entered upon security/dependability
requirements. The pu value is for the base of 1200A. This means the actual pickup is
120 A primary.
LOW SLOPE 25% Default value. Lower or higher values may be entered upon security/dependability
requirements.
LOW BPNT 1.83 pu None of the CTs will saturate for ac currents below 1.83 pu even with 80% remanence.
The dc component, however, combined with the remanence may saturate some CTs
even for currents below 1.83 pu. The B30 copes with saturation using the current
directional principle.
HIGH SLOPE 60% Default value. Lower or higher values may be entered upon security/dependability
requirements. The value of 60% ensures that the differential characteristic alone
(without the directional principle) will work correctly under ac saturation of the CTs
(24% of spurious differential during the fault on C-2 saturating CT-2).
HIGH BPNT 9.13 pu None of the CTs will saturate for ac currents below 9.13 pu. The dc component,
however, may saturate some CTs even for currents below 9.13 pu. The B30 copes with
saturation using the current directional principle.
HIGH SET 5.54 The maximum spurious differential current is 2.77 pu. Due to limited accuracy of
analysis and the effect of dc saturation a security factor of 2 has been adopted. The
highest internal fault current is 14kA, or 11.67 pu giving a good chance to clear a
number of faults by the unbiased differential operation.

9-10 B30 Bus Differential Relay GE Multilin

 9 APPLICATION OF SETTINGS 9.6 ENHANCING RELAY PERFORMANCE

9.6ENHANCING RELAY PERFORMANCE 9.6.1 USING SETTING GROUPS

In the example of the South bus, CT-2 is the weakest (most prone to saturation) CT dictating values of some settings. How-
ever, CT-2 may not be a part of the South bus protection zone if the S-2 switch is opened. As the position of the switch must
be provided for the dynamic bus replica, the status of the switch may be re-used to control the setting groups and apply
more sensitive settings if the weakest CT is not part of the bus zone at a given time. For example, if the S-2 switch is
opened while the S-6 switch is closed, the CT-4 becomes the weakest CT connected to the South bus. The higher break-
point (HIGH BPNT) could be increased to 22.88 pu (fourth column of the Limits of Linear Operations of the CTs table). The
lower breakpoint (LOW BPNT) could be increased to 4.58 pu (fifth column of the Limits of Linear Operations of the CTs table).
The higher slope (HIGH SLOPE) could be decreased as no AC saturation is possible for the South bus CTs (see the external
fault calculation tables for each circuit).
The concept could be implemented by using:
• FlexLogic™ to process the status signals in order to identify the weakest CT.
• Setting Groups to switch dynamically from one setting group to another (adaptive settings).
This approach may be extended even further for buses that do not require the dynamic bus replica mechanism. This could
include approximation of the total bus fault current using positions of all switches and breakers and optimizing the settings
depending on the amount of stress imposed on the CTs in any particular bus configuration.

GE Multilin B30 Bus Differential Relay 9-11

 9.6 ENHANCING RELAY PERFORMANCE 9 APPLICATION OF SETTINGS

9-12 B30 Bus Differential Relay GE Multilin

 APPENDIX A A.1 PARAMETERS

Appendices APPENDIX A FLEXANALOG PARAMETERS

A.1PARAMETERS A
Table A–1: FLEXANALOG DATA ITEMS (Sheet 1 of 11) Table A–1: FLEXANALOG DATA ITEMS (Sheet 2 of 11)
ADDR DATA ITEM FLEXANALOG NAME ADDR DATA ITEM FLEXANALOG NAME
6144 SRC 1 Phase A Current RMS SRC 1 Ia RMS 6278 SRC 3 Neutral Current RMS SRC 3 In RMS
6146 SRC 1 Phase B Current RMS SRC 1 Ib RMS 6280 SRC 3 Phase A Current Magnitude SRC 3 Ia Mag
6148 SRC 1 Phase C Current RMS SRC 1 Ic RMS 6282 SRC 3 Phase A Current Angle SRC 3 Ia Angle
6150 SRC 1 Neutral Current RMS SRC 1 In RMS 6283 SRC 3 Phase B Current Magnitude SRC 3 Ib Mag
6152 SRC 1 Phase A Current Magnitude SRC 1 Ia Mag 6285 SRC 3 Phase B Current Angle SRC 3 Ib Angle
6154 SRC 1 Phase A Current Angle SRC 1 Ia Angle 6286 SRC 3 Phase C Current Magnitude SRC 3 Ic Mag
6155 SRC 1 Phase B Current Magnitude SRC 1 Ib Mag 6288 SRC 3 Phase C Current Angle SRC 3 Ic Angle
6157 SRC 1 Phase B Current Angle SRC 1 Ib Angle 6289 SRC 3 Neutral Current Magnitude SRC 3 In Mag
6158 SRC 1 Phase C Current Magnitude SRC 1 Ic Mag 6291 SRC 3 Neutral Current Angle SRC 3 In Angle
6160 SRC 1 Phase C Current Angle SRC 1 Ic Angle 6292 SRC 3 Ground Current RMS SRC 3 Ig RMS
6161 SRC 1 Neutral Current Magnitude SRC 1 In Mag 6294 SRC 3 Ground Current Magnitude SRC 3 Ig Mag
6163 SRC 1 Neutral Current Angle SRC 1 In Angle 6296 SRC 3 Ground Current Angle SRC 3 Ig Angle
6164 SRC 1 Ground Current RMS SRC 1 Ig RMS 6297 SRC 3 Zero Seq. Current Magnitude SRC 3 I_0 Mag
6166 SRC 1 Ground Current Magnitude SRC 1 Ig Mag 6299 SRC 3 Zero Sequence Current Angle SRC 3 I_0 Angle
6168 SRC 1 Ground Current Angle SRC 1 Ig Angle 6300 SRC 3 Pos. Seq. Current Magnitude SRC 3 I_1 Mag
6169 SRC 1 Zero Seq. Current Magnitude SRC 1 I_0 Mag 6302 SRC 3 Positive Seq. Current Angle SRC 3 I_1 Angle
6171 SRC 1 Zero Sequence Current Angle SRC 1 I_0 Angle 6303 SRC 3 Neg. Seq. Current Magnitude SRC 3 I_2 Mag
6172 SRC 1 Pos. Seq. Current Magnitude SRC 1 I_1 Mag 6305 SRC 3 Negative Seq. Current Angle SRC 3 I_2 Angle
6174 SRC 1 Pos. Seq. Current Angle SRC 1 I_1 Angle 6306 SRC 3 Differential Gnd Current Mag. SRC 3 Igd Mag
6175 SRC 1 Neg. Seq. Current Magnitude SRC 1 I_2 Mag 6308 SRC 3 Differential Gnd Current Angle SRC 3 Igd Angle
6177 SRC 1 Neg. Seq. Current Angle SRC 1 I_2 Angle 6336 SRC 4 Phase A Current RMS SRC 4 Ia RMS
6178 SRC 1 Differential Gnd Current Mag. SRC 1 Igd Mag 6338 SRC 4 Phase B Current RMS SRC 4 Ib RMS
6180 SRC 1 Diff. Gnd. Current Angle SRC 1 Igd Angle 6340 SRC 4 Phase C Current RMS SRC 4 Ic RMS
6208 SRC 2 Phase A Current RMS SRC 2 Ia RMS 6342 SRC 4 Neutral Current RMS SRC 4 In RMS
6210 SRC 2 Phase B Current RMS SRC 2 Ib RMS 6344 SRC 4 Phase A Current Magnitude SRC 4 Ia Mag
6212 SRC 2 Phase C Current RMS SRC 2 Ic RMS 6346 SRC 4 Phase A Current Angle SRC 4 Ia Angle
6214 SRC 2 Neutral Current RMS SRC 2 In RMS 6347 SRC 4 Phase B Current Magnitude SRC 4 Ib Mag
6216 SRC 2 Phase A Current Magnitude SRC 2 Ia Mag 6349 SRC 4 Phase B Current Angle SRC 4 Ib Angle
6218 SRC 2 Phase A Current Angle SRC 2 Ia Angle 6350 SRC 4 Phase C Current Magnitude SRC 4 Ic Mag
6219 SRC 2 Phase B Current Magnitude SRC 2 Ib Mag 6352 SRC 4 Phase C Current Angle SRC 4 Ic Angle
6221 SRC 2 Phase B Current Angle SRC 2 Ib Angle 6353 SRC 4 Neutral Current Magnitude SRC 4 In Mag
6222 SRC 2 Phase C Current Magnitude SRC 2 Ic Mag 6355 SRC 4 Neutral Current Angle SRC 4 In Angle
6224 SRC 2 Phase C Current Angle SRC 2 Ic Angle 6356 SRC 4 Ground Current RMS SRC 4 Ig RMS
6225 SRC 2 Neutral Current Magnitude SRC 2 In Mag 6358 SRC 4 Ground Current Magnitude SRC 4 Ig Mag
6227 SRC 2 Neutral Current Angle SRC 2 In Angle 6360 SRC 4 Ground Current Angle SRC 4 Ig Angle
6228 SRC 2 Ground Current RMS SRC 2 Ig RMS 6361 SRC 4 Zero Seq. Current Magnitude SRC 4 I_0 Mag
6230 SRC 2 Ground Current Magnitude SRC 2 Ig Mag 6363 SRC 4 Zero Seq. Current Angle SRC 4 I_0 Angle
6232 SRC 2 Ground Current Angle SRC 2 Ig Angle 6364 SRC 4 Positive Seq. Current Mag. SRC 4 I_1 Mag
6233 SRC 2 Zero Seq. Current Magnitude SRC 2 I_0 Mag 6366 SRC 4 Positive Seq. Current Angle SRC 4 I_1 Angle
6235 SRC 2 Zero Sequence Current Angle SRC 2 I_0 Angle 6367 SRC 4 Negative Seq. Current Mag. SRC 4 I_2 Mag
6236 SRC 2 Pos. Seq. Current Magnitude SRC 2 I_1 Mag 6369 SRC 4 Negative Seq. Current Angle SRC 4 I_2 Angle
6238 SRC 2 Positive Seq. Current Angle SRC 2 I_1 Angle 6370 SRC 4 Differential Gnd Current Mag. SRC 4 Igd Mag
6239 SRC 2 Neg. Seq. Current Magnitude SRC 2 I_2 Mag 6372 SRC 4 Differential Gnd Current Angle SRC 4 Igd Angle
6241 SRC 2 Negative Seq. Current Angle SRC 2 I_2 Angle 6400 SRC 5 Phase A Current RMS SRC 5 Ia RMS
6242 SRC 2 Differential Gnd Current Mag. SRC 2 Igd Mag 6402 SRC 5 Phase B Current RMS SRC 5 Ib RMS
6244 SRC 2 Diff. Gnd Current Angle SRC 2 Igd Angle 6404 SRC 5 Phase C Current RMS SRC 5 Ic RMS
6272 SRC 3 Phase A Current RMS SRC 3 Ia RMS 6406 SRC 5 Neutral Current RMS SRC 5 In RMS
6274 SRC 3 Phase B Current RMS SRC 3 Ib RMS 6408 SRC 5 Phase A Current Magnitude SRC 5 Ia Mag
6276 SRC 3 Phase C Current RMS SRC 3 Ic RMS 6410 SRC 5 Phase A Current Angle SRC 5 Ia Angle

GE Multilin B30 Bus Differential Relay A-1

 A.1 PARAMETERS APPENDIX A

Table A–1: FLEXANALOG DATA ITEMS (Sheet 3 of 11) Table A–1: FLEXANALOG DATA ITEMS (Sheet 4 of 11)

A ADDR
6411
DATA ITEM
SRC 5 Phase B Current Magnitude
FLEXANALOG NAME
SRC 5 Ib Mag
ADDR
6677
DATA ITEM
SRC 1 Phase AB Voltage Magnitude
FLEXANALOG NAME
SRC 1 Vab Mag
6413 SRC 5 Phase B Current Angle SRC 5 Ib Angle 6679 SRC 1 Phase AB Voltage Angle SRC 1 Vab Angle
6414 SRC 5 Phase C Current Magnitude SRC 5 Ic Mag 6680 SRC 1 Phase BC Voltage Magnitude SRC 1 Vbc Mag
6416 SRC 5 Phase C Current Angle SRC 5 Ic Angle 6682 SRC 1 Phase BC Voltage Angle SRC 1 Vbc Angle
6417 SRC 5 Neutral Current Magnitude SRC 5 In Mag 6683 SRC 1 Phase CA Voltage Magnitude SRC 1 Vca Mag
6419 SRC 5 Neutral Current Angle SRC 5 In Angle 6685 SRC 1 Phase CA Voltage Angle SRC 1 Vca Angle
6420 SRC 5 Ground Current RMS SRC 5 Ig RMS 6686 SRC 1 Auxiliary Voltage RMS SRC 1 Vx RMS
6422 SRC 5 Ground Current Magnitude SRC 5 Ig Mag 6688 SRC 1 Auxiliary Voltage Magnitude SRC 1 Vx Mag
6424 SRC 5 Ground Current Angle SRC 5 Ig Angle 6690 SRC 1 Auxiliary Voltage Angle SRC 1 Vx Angle
6425 SRC 5 Zero Seq. Current Magnitude SRC 5 I_0 Mag 6691 SRC 1 Zero Sequence Voltage Mag. SRC 1 V_0 Mag
6427 SRC 5 Zero Sequence Current Angle SRC 5 I_0 Angle 6693 SRC 1 Zero Sequence Voltage Angle SRC 1 V_0 Angle
6428 SRC 5 Positive Seq. Current Mag. SRC 5 I_1 Mag 6694 SRC 1 Positive Seq. Voltage Mag. SRC 1 V_1 Mag
6430 SRC 5 Positive Seq. Current Angle SRC 5 I_1 Angle 6696 SRC 1 Positive Seq. Voltage Angle SRC 1 V_1 Angle
6431 SRC 5 Negative Seq. Current Mag. SRC 5 I_2 Mag 6697 SRC 1 Negative Seq. Voltage Mag. SRC 1 V_2 Mag
6433 SRC 5 Negative Seq. Current Angle SRC 5 I_2 Angle 6699 SRC 1 Negative Seq. Voltage Angle SRC 1 V_2 Angle
6434 SRC 5 Differential Gnd Current Mag. SRC 5 Igd Mag 6720 SRC 2 Phase AG Voltage RMS SRC 2 Vag RMS
6436 SRC 5 Differential Gnd Current Angle SRC 5 Igd Angle 6722 SRC 2 Phase BG Voltage RMS SRC 2 Vbg RMS
6464 SRC 6 Phase A Current RMS SRC 6 Ia RMS 6724 SRC 2 Phase CG Voltage RMS SRC 2 Vcg RMS
6466 SRC 6 Phase B Current RMS SRC 6 Ib RMS 6726 SRC 2 Phase AG Voltage Magnitude SRC 2 Vag Mag
6468 SRC 6 Phase C Current RMS SRC 6 Ic RMS 6728 SRC 2 Phase AG Voltage Angle SRC 2 Vag Angle
6470 SRC 6 Neutral Current RMS SRC 6 In RMS 6729 SRC 2 Phase BG Voltage Magnitude SRC 2 Vbg Mag
6472 SRC 6 Phase A Current Magnitude SRC 6 Ia Mag 6731 SRC 2 Phase BG Voltage Angle SRC 2 Vbg Angle
6474 SRC 6 Phase A Current Angle SRC 6 Ia Angle 6732 SRC 2 Phase CG Voltage Magnitude SRC 2 Vcg Mag
6475 SRC 6 Phase B Current Magnitude SRC 6 Ib Mag 6734 SRC 2 Phase CG Voltage Angle SRC 2 Vcg Angle
6477 SRC 6 Phase B Current Angle SRC 6 Ib Angle 6735 SRC 2 Phase AB Voltage RMS SRC 2 Vab RMS
6478 SRC 6 Phase C Current Magnitude SRC 6 Ic Mag 6737 SRC 2 Phase BC Voltage RMS SRC 2 Vbc RMS
6480 SRC 6 Phase C Current Angle SRC 6 Ic Angle 6739 SRC 2 Phase CA Voltage RMS SRC 2 Vca RMS
6481 SRC 6 Neutral Current Magnitude SRC 6 In Mag 6741 SRC 2 Phase AB Voltage Magnitude SRC 2 Vab Mag
6483 SRC 6 Neutral Current Angle SRC 6 In Angle 6743 SRC 2 Phase AB Voltage Angle SRC 2 Vab Angle
6484 SRC 6 Ground Current RMS SRC 6 Ig RMS 6744 SRC 2 Phase BC Voltage Magnitude SRC 2 Vbc Mag
6486 SRC 6 Ground Current Magnitude SRC 6 Ig Mag 6746 SRC 2 Phase BC Voltage Angle SRC 2 Vbc Angle
6488 SRC 6 Ground Current Angle SRC 6 Ig Angle 6747 SRC 2 Phase CA Voltage Magnitude SRC 2 Vca Mag
6489 SRC 6 Zero Seq. Current Magnitude SRC 6 I_0 Mag 6749 SRC 2 Phase CA Voltage Angle SRC 2 Vca Angle
6491 SRC 6 Zero Sequence Current Angle SRC 6 I_0 Angle 6750 SRC 2 Auxiliary Voltage RMS SRC 2 Vx RMS
6492 SRC 6 Positive Seq. Current Mag. SRC 6 I_1 Mag 6752 SRC 2 Auxiliary Voltage Magnitude SRC 2 Vx Mag
6494 SRC 6 Positive Seq. Current Angle SRC 6 I_1 Angle 6754 SRC 2 Auxiliary Voltage Angle SRC 2 Vx Angle
6495 SRC 6 Negative Seq. Current Mag. SRC 6 I_2 Mag 6755 SRC 2 Zero Seq. Voltage Magnitude SRC 2 V_0 Mag
6497 SRC 6 Negative Seq. Current Angle SRC 6 I_2 Angle 6757 SRC 2 Zero Sequence Voltage Angle SRC 2 V_0 Angle
6498 SRC 6 Differential Gnd Current Mag. SRC 6 Igd Mag 6758 SRC 2 Positive Seq. Voltage Mag. SRC 2 V_1 Mag
6500 SRC 6 Differential Gnd Current Angle SRC 6 Igd Angle 6760 SRC 2 Positive Seq. Voltage Angle SRC 2 V_1 Angle
6656 SRC 1 Phase AG Voltage RMS SRC 1 Vag RMS 6761 SRC 2 Negative Seq. Voltage Mag. SRC 2 V_2 Mag
6658 SRC 1 Phase BG Voltage RMS SRC 1 Vbg RMS 6763 SRC 2 Negative Seq. Voltage Angle SRC 2 V_2 Angle
6660 SRC 1 Phase CG Voltage RMS SRC 1 Vcg RMS 6784 SRC 3 Phase AG Voltage RMS SRC 3 Vag RMS
6662 SRC 1 Phase AG Voltage Magnitude SRC 1 Vag Mag 6786 SRC 3 Phase BG Voltage RMS SRC 3 Vbg RMS
6664 SRC 1 Phase AG Voltage Angle SRC 1 Vag Angle 6788 SRC 3 Phase CG Voltage RMS SRC 3 Vcg RMS
6665 SRC 1 Phase BG Voltage Magnitude SRC 1 Vbg Mag 6790 SRC 3 Phase AG Voltage Magnitude SRC 3 Vag Mag
6667 SRC 1 Phase BG Voltage Angle SRC 1 Vbg Angle 6792 SRC 3 Phase AG Voltage Angle SRC 3 Vag Angle
6668 SRC 1 Phase CG Voltage Magnitude SRC 1 Vcg Mag 6793 SRC 3 Phase BG Voltage Magnitude SRC 3 Vbg Mag
6670 SRC 1 Phase CG Voltage Angle SRC 1 Vcg Angle 6795 SRC 3 Phase BG Voltage Angle SRC 3 Vbg Angle
6671 SRC 1 Phase AB Voltage RMS SRC 1 Vab RMS 6796 SRC 3 Phase CG Voltage Magnitude SRC 3 Vcg Mag
6673 SRC 1 Phase BC Voltage RMS SRC 1 Vbc RMS 6798 SRC 3 Phase CG Voltage Angle SRC 3 Vcg Angle
6675 SRC 1 Phase CA Voltage RMS SRC 1 Vca RMS 6799 SRC 3 Phase AB Voltage RMS SRC 3 Vab RMS

A-2 B30 Bus Differential Relay GE Multilin

 APPENDIX A A.1 PARAMETERS

Table A–1: FLEXANALOG DATA ITEMS (Sheet 5 of 11) Table A–1: FLEXANALOG DATA ITEMS (Sheet 6 of 11)
ADDR
6801
DATA ITEM
SRC 3 Phase BC Voltage RMS
FLEXANALOG NAME
SRC 3 Vbc RMS
ADDR
6926
DATA ITEM
SRC 5 Phase CG Voltage Angle
FLEXANALOG NAME
SRC 5 Vcg Angle
A
6803 SRC 3 Phase CA Voltage RMS SRC 3 Vca RMS 6927 SRC 5 Phase AB Voltage RMS SRC 5 Vab RMS
6805 SRC 3 Phase AB Voltage Magnitude SRC 3 Vab Mag 6929 SRC 5 Phase BC Voltage RMS SRC 5 Vbc RMS
6807 SRC 3 Phase AB Voltage Angle SRC 3 Vab Angle 6931 SRC 5 Phase CA Voltage RMS SRC 5 Vca RMS
6808 SRC 3 Phase BC Voltage Magnitude SRC 3 Vbc Mag 6933 SRC 5 Phase AB Voltage Magnitude SRC 5 Vab Mag
6810 SRC 3 Phase BC Voltage Angle SRC 3 Vbc Angle 6935 SRC 5 Phase AB Voltage Angle SRC 5 Vab Angle
6811 SRC 3 Phase CA Voltage Magnitude SRC 3 Vca Mag 6936 SRC 5 Phase BC Voltage Magnitude SRC 5 Vbc Mag
6813 SRC 3 Phase CA Voltage Angle SRC 3 Vca Angle 6938 SRC 5 Phase BC Voltage Angle SRC 5 Vbc Angle
6814 SRC 3 Auxiliary Voltage RMS SRC 3 Vx RMS 6939 SRC 5 Phase CA Voltage Magnitude SRC 5 Vca Mag
6816 SRC 3 Auxiliary Voltage Magnitude SRC 3 Vx Mag 6941 SRC 5 Phase CA Voltage Angle SRC 5 Vca Angle
6818 SRC 3 Auxiliary Voltage Angle SRC 3 Vx Angle 6942 SRC 5 Auxiliary Voltage RMS SRC 5 Vx RMS
6819 SRC 3 Zero Seq. Voltage Magnitude SRC 3 V_0 Mag 6944 SRC 5 Auxiliary Voltage Magnitude SRC 5 Vx Mag
6821 SRC 3 Zero Sequence Voltage Angle SRC 3 V_0 Angle 6946 SRC 5 Auxiliary Voltage Angle SRC 5 Vx Angle
6822 SRC 3 Positive Seq. Voltage Mag. SRC 3 V_1 Mag 6947 SRC 5 Zero Seq. Voltage Magnitude SRC 5 V_0 Mag
6824 SRC 3 Positive Seq. Voltage Angle SRC 3 V_1 Angle 6949 SRC 5 Zero Sequence Voltage Angle SRC 5 V_0 Angle
6825 SRC 3 Negative Seq. Voltage Mag. SRC 3 V_2 Mag 6950 SRC 5 Positive Seq. Voltage Mag. SRC 5 V_1 Mag
6827 SRC 3 Negative Seq. Voltage Angle SRC 3 V_2 Angle 6952 SRC 5 Positive Seq. Voltage Angle SRC 5 V_1 Angle
6848 SRC 4 Phase AG Voltage RMS SRC 4 Vag RMS 6953 SRC 5 Negative Seq. Voltage Mag. SRC 5 V_2 Mag
6850 SRC 4 Phase BG Voltage RMS SRC 4 Vbg RMS 6955 SRC 5 Negative Seq. Voltage Angle SRC 5 V_2 Angle
6852 SRC 4 Phase CG Voltage RMS SRC 4 Vcg RMS 6976 SRC 6 Phase AG Voltage RMS SRC 6 Vag RMS
6854 SRC 4 Phase AG Voltage Magnitude SRC 4 Vag Mag 6978 SRC 6 Phase BG Voltage RMS SRC 6 Vbg RMS
6856 SRC 4 Phase AG Voltage Angle SRC 4 Vag Angle 6980 SRC 6 Phase CG Voltage RMS SRC 6 Vcg RMS
6857 SRC 4 Phase BG Voltage Magnitude SRC 4 Vbg Mag 6982 SRC 6 Phase AG Voltage Magnitude SRC 6 Vag Mag
6859 SRC 4 Phase BG Voltage Angle SRC 4 Vbg Angle 6984 SRC 6 Phase AG Voltage Angle SRC 6 Vag Angle
6860 SRC 4 Phase CG Voltage Magnitude SRC 4 Vcg Mag 6985 SRC 6 Phase BG Voltage Magnitude SRC 6 Vbg Mag
6862 SRC 4 Phase CG Voltage Angle SRC 4 Vcg Angle 6987 SRC 6 Phase BG Voltage Angle SRC 6 Vbg Angle
6863 SRC 4 Phase AB Voltage RMS SRC 4 Vab RMS 6988 SRC 6 Phase CG Voltage Magnitude SRC 6 Vcg Mag
6865 SRC 4 Phase BC Voltage RMS SRC 4 Vbc RMS 6990 SRC 6 Phase CG Voltage Angle SRC 6 Vcg Angle
6867 SRC 4 Phase CA Voltage RMS SRC 4 Vca RMS 6991 SRC 6 Phase AB Voltage RMS SRC 6 Vab RMS
6869 SRC 4 Phase AB Voltage Magnitude SRC 4 Vab Mag 6993 SRC 6 Phase BC Voltage RMS SRC 6 Vbc RMS
6871 SRC 4 Phase AB Voltage Angle SRC 4 Vab Angle 6995 SRC 6 Phase CA Voltage RMS SRC 6 Vca RMS
6872 SRC 4 Phase BC Voltage Magnitude SRC 4 Vbc Mag 6997 SRC 6 Phase AB Voltage Magnitude SRC 6 Vab Mag
6874 SRC 4 Phase BC Voltage Angle SRC 4 Vbc Angle 6999 SRC 6 Phase AB Voltage Angle SRC 6 Vab Angle
6875 SRC 4 Phase CA Voltage Magnitude SRC 4 Vca Mag 7000 SRC 6 Phase BC Voltage Magnitude SRC 6 Vbc Mag
6877 SRC 4 Phase CA Voltage Angle SRC 4 Vca Angle 7002 SRC 6 Phase BC Voltage Angle SRC 6 Vbc Angle
6878 SRC 4 Auxiliary Voltage RMS SRC 4 Vx RMS 7003 SRC 6 Phase CA Voltage Magnitude SRC 6 Vca Mag
6880 SRC 4 Auxiliary Voltage Magnitude SRC 4 Vx Mag 7005 SRC 6 Phase CA Voltage Angle SRC 6 Vca Angle
6882 SRC 4 Auxiliary Voltage Angle SRC 4 Vx Angle 7006 SRC 6 Auxiliary Voltage RMS SRC 6 Vx RMS
6883 SRC 4 Zero Seq. Voltage Magnitude SRC 4 V_0 Mag 7008 SRC 6 Auxiliary Voltage Magnitude SRC 6 Vx Mag
6885 SRC 4 Zero Sequence Voltage Angle SRC 4 V_0 Angle 7010 SRC 6 Auxiliary Voltage Angle SRC 6 Vx Angle
6886 SRC 4 Positive Seq. Voltage Mag. SRC 4 V_1 Mag 7011 SRC 6 Zero Seq. Voltage Magnitude SRC 6 V_0 Mag
6888 SRC 4 Positive Seq. Voltage Angle SRC 4 V_1 Angle 7013 SRC 6 Zero Sequence Voltage Angle SRC 6 V_0 Angle
6889 SRC 4 Negative Seq. Voltage Mag. SRC 4 V_2 Mag 7014 SRC 6 Positive Seq. Voltage Mag. SRC 6 V_1 Mag
6891 SRC 4 Negative Seq. Voltage Angle SRC 4 V_2 Angle 7016 SRC 6 Positive Seq. Voltage Angle SRC 6 V_1 Angle
6912 SRC 5 Phase AG Voltage RMS SRC 5 Vag RMS 7017 SRC 6 Negative Seq. Voltage Mag. SRC 6 V_2 Mag
6914 SRC 5 Phase BG Voltage RMS SRC 5 Vbg RMS 7019 SRC 6 Negative Seq. Voltage Angle SRC 6 V_2 Angle
6916 SRC 5 Phase CG Voltage RMS SRC 5 Vcg RMS 7168 SRC 1 Three Phase Real Power SRC 1 P
6918 SRC 5 Phase AG Voltage Magnitude SRC 5 Vag Mag 7170 SRC 1 Phase A Real Power SRC 1 Pa
6920 SRC 5 Phase AG Voltage Angle SRC 5 Vag Angle 7172 SRC 1 Phase B Real Power SRC 1 Pb
6921 SRC 5 Phase BG Voltage Magnitude SRC 5 Vbg Mag 7174 SRC 1 Phase C Real Power SRC 1 Pc
6923 SRC 5 Phase BG Voltage Angle SRC 5 Vbg Angle 7176 SRC 1 Three Phase Reactive Power SRC 1 Q
6924 SRC 5 Phase CG Voltage Magnitude SRC 5 Vcg Mag 7178 SRC 1 Phase A Reactive Power SRC 1 Qa

GE Multilin B30 Bus Differential Relay A-3

 A.1 PARAMETERS APPENDIX A

Table A–1: FLEXANALOG DATA ITEMS (Sheet 7 of 11) Table A–1: FLEXANALOG DATA ITEMS (Sheet 8 of 11)

A ADDR
7180
DATA ITEM
SRC 1 Phase B Reactive Power
FLEXANALOG NAME
SRC 1 Qb
ADDR
7284
DATA ITEM
SRC 4 Phase B Apparent Power
FLEXANALOG NAME
SRC 4 Sb
7182 SRC 1 Phase C Reactive Power SRC 1 Qc 7286 SRC 4 Phase C Apparent Power SRC 4 Sc
7184 SRC 1 Three Phase Apparent Power SRC 1 S 7288 SRC 4 Three Phase Power Factor SRC 4 PF
7186 SRC 1 Phase A Apparent Power SRC 1 Sa 7289 SRC 4 Phase A Power Factor SRC 4 Phase A PF
7188 SRC 1 Phase B Apparent Power SRC 1 Sb 7290 SRC 4 Phase B Power Factor SRC 4 Phase B PF
7190 SRC 1 Phase C Apparent Power SRC 1 Sc 7291 SRC 4 Phase C Power Factor SRC 4 Phase C PF
7192 SRC 1 Three Phase Power Factor SRC 1 PF 7296 SRC 5 Three Phase Real Power SRC 5 P
7193 SRC 1 Phase A Power Factor SRC 1 Phase A PF 7298 SRC 5 Phase A Real Power SRC 5 Pa
7194 SRC 1 Phase B Power Factor SRC 1 Phase B PF 7300 SRC 5 Phase B Real Power SRC 5 Pb
7195 SRC 1 Phase C Power Factor SRC 1 Phase C PF 7302 SRC 5 Phase C Real Power SRC 5 Pc
7200 SRC 2 Three Phase Real Power SRC 2 P 7304 SRC 5 Three Phase Reactive Power SRC 5 Q
7202 SRC 2 Phase A Real Power SRC 2 Pa 7306 SRC 5 Phase A Reactive Power SRC 5 Qa
7204 SRC 2 Phase B Real Power SRC 2 Pb 7308 SRC 5 Phase B Reactive Power SRC 5 Qb
7206 SRC 2 Phase C Real Power SRC 2 Pc 7310 SRC 5 Phase C Reactive Power SRC 5 Qc
7208 SRC 2 Three Phase Reactive Power SRC 2 Q 7312 SRC 5 Three Phase Apparent Power SRC 5 S
7210 SRC 2 Phase A Reactive Power SRC 2 Qa 7314 SRC 5 Phase A Apparent Power SRC 5 Sa
7212 SRC 2 Phase B Reactive Power SRC 2 Qb 7316 SRC 5 Phase B Apparent Power SRC 5 Sb
7214 SRC 2 Phase C Reactive Power SRC 2 Qc 7318 SRC 5 Phase C Apparent Power SRC 5 Sc
7216 SRC 2 Three Phase Apparent Power SRC 2 S 7320 SRC 5 Three Phase Power Factor SRC 5 PF
7218 SRC 2 Phase A Apparent Power SRC 2 Sa 7321 SRC 5 Phase A Power Factor SRC 5 Phase A PF
7220 SRC 2 Phase B Apparent Power SRC 2 Sb 7322 SRC 5 Phase B Power Factor SRC 5 Phase B PF
7222 SRC 2 Phase C Apparent Power SRC 2 Sc 7323 SRC 5 Phase C Power Factor SRC 5 Phase C PF
7224 SRC 2 Three Phase Power Factor SRC 2 PF 7328 SRC 6 Three Phase Real Power SRC 6 P
7225 SRC 2 Phase A Power Factor SRC 2 Phase A PF 7330 SRC 6 Phase A Real Power SRC 6 Pa
7226 SRC 2 Phase B Power Factor SRC 2 Phase B PF 7332 SRC 6 Phase B Real Power SRC 6 Pb
7227 SRC 2 Phase C Power Factor SRC 2 Phase C PF 7334 SRC 6 Phase C Real Power SRC 6 Pc
7232 SRC 3 Three Phase Real Power SRC 3 P 7336 SRC 6 Three Phase Reactive Power SRC 6 Q
7234 SRC 3 Phase A Real Power SRC 3 Pa 7338 SRC 6 Phase A Reactive Power SRC 6 Qa
7236 SRC 3 Phase B Real Power SRC 3 Pb 7340 SRC 6 Phase B Reactive Power SRC 6 Qb
7238 SRC 3 Phase C Real Power SRC 3 Pc 7342 SRC 6 Phase C Reactive Power SRC 6 Qc
7240 SRC 3 Three Phase Reactive Power SRC 3 Q 7344 SRC 6 Three Phase Apparent Power SRC 6 S
7242 SRC 3 Phase A Reactive Power SRC 3 Qa 7346 SRC 6 Phase A Apparent Power SRC 6 Sa
7244 SRC 3 Phase B Reactive Power SRC 3 Qb 7348 SRC 6 Phase B Apparent Power SRC 6 Sb
7246 SRC 3 Phase C Reactive Power SRC 3 Qc 7350 SRC 6 Phase C Apparent Power SRC 6 Sc
7248 SRC 3 Three Phase Apparent Power SRC 3 S 7352 SRC 6 Three Phase Power Factor SRC 6 PF
7250 SRC 3 Phase A Apparent Power SRC 3 Sa 7353 SRC 6 Phase A Power Factor SRC 6 Phase A PF
7252 SRC 3 Phase B Apparent Power SRC 3 Sb 7354 SRC 6 Phase B Power Factor SRC 6 Phase B PF
7254 SRC 3 Phase C Apparent Power SRC 3 Sc 7355 SRC 6 Phase C Power Factor SRC 6 Phase C PF
7256 SRC 3 Three Phase Power Factor SRC 3 PF 7552 SRC 1 Frequency SRC 1 Frequency
7257 SRC 3 Phase A Power Factor SRC 3 Phase A PF 7553 SRC 2 Frequency SRC 2 Frequency
7258 SRC 3 Phase B Power Factor SRC 3 Phase B PF 7554 SRC 3 Frequency SRC 3 Frequency
7259 SRC 3 Phase C Power Factor SRC 3 Phase C PF 7555 SRC 4 Frequency SRC 4 Frequency
7264 SRC 4 Three Phase Real Power SRC 4 P 7556 SRC 5 Frequency SRC 5 Frequency
7266 SRC 4 Phase A Real Power SRC 4 Pa 7557 SRC 6 Frequency SRC 6 Frequency
7268 SRC 4 Phase B Real Power SRC 4 Pb 7680 SRC 1 Demand Ia SRC 1 Demand Ia
7270 SRC 4 Phase C Real Power SRC 4 Pc 7682 SRC 1 Demand Ib SRC 1 Demand Ib
7272 SRC 4 Three Phase Reactive Power SRC 4 Q 7684 SRC 1 Demand Ic SRC 1 Demand Ic
7274 SRC 4 Phase A Reactive Power SRC 4 Qa 7686 SRC 1 Demand Watt SRC 1 Demand Watt
7276 SRC 4 Phase B Reactive Power SRC 4 Qb 7688 SRC 1 Demand Var SRC 1 Demand var
7278 SRC 4 Phase C Reactive Power SRC 4 Qc 7690 SRC 1 Demand Va SRC 1 Demand Va
7280 SRC 4 Three Phase Apparent Power SRC 4 S 7696 SRC 2 Demand Ia SRC 2 Demand Ia
7282 SRC 4 Phase A Apparent Power SRC 4 Sa 7698 SRC 2 Demand Ib SRC 2 Demand Ib

A-4 B30 Bus Differential Relay GE Multilin

 APPENDIX A A.1 PARAMETERS

Table A–1: FLEXANALOG DATA ITEMS (Sheet 9 of 11) Table A–1: FLEXANALOG DATA ITEMS (Sheet 10 of 11)
ADDR
7700
DATA ITEM
SRC 2 Demand Ic
FLEXANALOG NAME
SRC 2 Demand Ic
ADDR
13526
DATA ITEM
DCMA Inputs 12 Value
FLEXANALOG NAME
DCMA Inputs 12 Value
A
7702 SRC 2 Demand Watt SRC 2 Demand Watt 13528 DCMA Inputs 13 Value DCMA Inputs 13 Value
7704 SRC 2 Demand Var SRC 2 Demand var 13530 DCMA Inputs 14 Value DCMA Inputs 14 Value
7706 SRC 2 Demand Va SRC 2 Demand Va 13532 DCMA Inputs 15 Value DCMA Inputs 15 Value
7712 SRC 3 Demand Ia SRC 3 Demand Ia 13534 DCMA Inputs 16 Value DCMA Inputs 16 Value
7714 SRC 3 Demand Ib SRC 3 Demand Ib 13536 DCMA Inputs 17 Value DCMA Inputs 17 Value
7716 SRC 3 Demand Ic SRC 3 Demand Ic 13538 DCMA Inputs 18 Value DCMA Inputs 18 Value
7718 SRC 3 Demand Watt SRC 3 Demand Watt 13540 DCMA Inputs 19 Value DCMA Inputs 19 Value
7720 SRC 3 Demand Var SRC 3 Demand var 13542 DCMA Inputs 20 Value DCMA Inputs 20 Value
7722 SRC 3 Demand Va SRC 3 Demand Va 13544 DCMA Inputs 21 Value DCMA Inputs 21 Value
7728 SRC 4 Demand Ia SRC 4 Demand Ia 13546 DCMA Inputs 22 Value DCMA Inputs 22 Value
7730 SRC 4 Demand Ib SRC 4 Demand Ib 13548 DCMA Inputs 23 Value DCMA Inputs 23 Value
7732 SRC 4 Demand Ic SRC 4 Demand Ic 13550 DCMA Inputs 24 Value DCMA Inputs 24 Value
7734 SRC 4 Demand Watt SRC 4 Demand Watt 13552 RTD Inputs 1 Value RTD Inputs 1 Value
7736 SRC 4 Demand Var SRC 4 Demand var 13553 RTD Inputs 2 Value RTD Inputs 2 Value
7738 SRC 4 Demand Va SRC 4 Demand Va 13554 RTD Inputs 3 Value RTD Inputs 3 Value
7744 SRC 5 Demand Ia SRC 5 Demand Ia 13555 RTD Inputs 4 Value RTD Inputs 4 Value
7746 SRC 5 Demand Ib SRC 5 Demand Ib 13556 RTD Inputs 5 Value RTD Inputs 5 Value
7748 SRC 5 Demand Ic SRC 5 Demand Ic 13557 RTD Inputs 6 Value RTD Inputs 6 Value
7750 SRC 5 Demand Watt SRC 5 Demand Watt 13558 RTD Inputs 7 Value RTD Inputs 7 Value
7752 SRC 5 Demand Var SRC 5 Demand var 13559 RTD Inputs 8 Value RTD Inputs 8 Value
7754 SRC 5 Demand Va SRC 5 Demand Va 13560 RTD Inputs 9 Value RTD Inputs 9 Value
7760 SRC 6 Demand Ia SRC 6 Demand Ia 13561 RTD Inputs 10 Value RTD Inputs 10 Value
7762 SRC 6 Demand Ib SRC 6 Demand Ib 13562 RTD Inputs 11 Value RTD Inputs 11 Value
7764 SRC 6 Demand Ic SRC 6 Demand Ic 13563 RTD Inputs 12 Value RTD Inputs 12 Value
7766 SRC 6 Demand Watt SRC 6 Demand Watt 13564 RTD Inputs 13 Value RTD Inputs 13 Value
7768 SRC 6 Demand Var SRC 6 Demand var 13565 RTD Inputs 14 Value RTD Inputs 14 Value
7770 SRC 6 Demand Va SRC 6 Demand Va 13566 RTD Inputs 15 Value RTD Inputs 15 Value
9472 Bus Diff IA Magnitude Bus 1 Diff A Mag 13567 RTD Inputs 16 Value RTD Inputs 16 Value
9474 Bus Diff IA Angle Bus 1 Diff A Ang 13568 RTD Inputs 17 Value RTD Inputs 17 Value
9475 Bus Diff IB Magnitude Bus 1 Diff B Mag 13569 RTD Inputs 18 Value RTD Inputs 18 Value
9477 Bus Diff IB Angle Bus 1 Diff B Ang 13570 RTD Inputs 19 Value RTD Inputs 19 Value
9478 Bus Diff IC Magnitude Bus 1 Diff C Mag 13571 RTD Inputs 20 Value RTD Inputs 20 Value
9480 Bus Diff IC Angle Bus 1 Diff C Ang 13572 RTD Inputs 21 Value RTD Inputs 21 Value
9481 Bus Rest IA Magnitude Bus 1 Rest A Mag 13573 RTD Inputs 22 Value RTD Inputs 22 Value
9483 Bus Rest IA Angle Bus 1 Rest A Ang 13574 RTD Inputs 23 Value RTD Inputs 23 Value
9484 Bus Rest IB Magnitude Bus 1 Rest B Mag 13575 RTD Inputs 24 Value RTD Inputs 24 Value
9486 Bus Rest IB Angle Bus 1 Rest B Ang 13576 RTD Inputs 25 Value RTD Inputs 25 Value
9487 Bus Rest IC Magnitude Bus 1 Rest C Mag 13577 RTD Inputs 26 Value RTD Inputs 26 Value
9489 Bus Rest IC Angle Bus 1 Rest C Ang 13578 RTD Inputs 27 Value RTD Inputs 27 Value
9493 Bus Max CT Primary Bus Max CT Primary 13579 RTD Inputs 28 Value RTD Inputs 28 Value
13504 DCMA Inputs 1 Value DCMA Inputs 1 Value 13580 RTD Inputs 29 Value RTD Inputs 29 Value
13506 DCMA Inputs 2 Value DCMA Inputs 2 Value 13581 RTD Inputs 30 Value RTD Inputs 30 Value
13508 DCMA Inputs 3 Value DCMA Inputs 3 Value 13582 RTD Inputs 31 Value RTD Inputs 31 Value
13510 DCMA Inputs 4 Value DCMA Inputs 4 Value 13583 RTD Inputs 32 Value RTD Inputs 32 Value
13512 DCMA Inputs 5 Value DCMA Inputs 5 Value 13584 RTD Inputs 33 Value RTD Inputs 33 Value
13514 DCMA Inputs 6 Value DCMA Inputs 6 Value 13585 RTD Inputs 34 Value RTD Inputs 34 Value
13516 DCMA Inputs 7 Value DCMA Inputs 7 Value 13586 RTD Inputs 35 Value RTD Inputs 35 Value
13518 DCMA Inputs 8 Value DCMA Inputs 8 Value 13587 RTD Inputs 36 Value RTD Inputs 36 Value
13520 DCMA Inputs 9 Value DCMA Inputs 9 Value 13588 RTD Inputs 37 Value RTD Inputs 37 Value
13522 DCMA Inputs 10 Value DCMA Inputs 10 Value 13589 RTD Inputs 38 Value RTD Inputs 38 Value
13524 DCMA Inputs 11 Value DCMA Inputs 11 Value 13590 RTD Inputs 39 Value RTD Inputs 39 Value

GE Multilin B30 Bus Differential Relay A-5

 A.1 PARAMETERS APPENDIX A

Table A–1: FLEXANALOG DATA ITEMS (Sheet 11 of 11)

A ADDR
13591
DATA ITEM
RTD Inputs 40 Value
FLEXANALOG NAME
RTD Inputs 40 Value
13592 RTD Inputs 41 Value RTD Inputs 41 Value
13593 RTD Inputs 42 Value RTD Inputs 42 Value
13594 RTD Inputs 43 Value RTD Inputs 43 Value
13595 RTD Inputs 44 Value RTD Inputs 44 Value
13596 RTD Inputs 45 Value RTD Inputs 45 Value
13597 RTD Inputs 46 Value RTD Inputs 46 Value
13598 RTD Inputs 47 Value RTD Inputs 47 Value
13599 RTD Inputs 48 Value RTD Inputs 48 Value
32768 Tracking Frequency Tracking Frequency
39425 FlexElement 1 Actual FlexElement 1 Value
39427 FlexElement 2 Actual FlexElement 2 Value
39429 FlexElement 3 Actual FlexElement 3 Value
39431 FlexElement 4 Actual FlexElement 4 Value
39433 FlexElement 5 Actual FlexElement 5 Value
39435 FlexElement 6 Actual FlexElement 6 Value
39437 FlexElement 7 Actual FlexElement 7 Value
39439 FlexElement 8 Actual FlexElement 8 Value
40971 Current Setting Group Active Setting Group

A-6 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.1 MODBUS RTU PROTOCOL

APPENDIX B MODBUS COMMUNICATIONSB.1MODBUS RTU PROTOCOL B.1.1 INTRODUCTION

The UR-series relays support a number of communications protocols to allow connection to equipment such as personal
computers, RTUs, SCADA masters, and programmable logic controllers. The Modicon Modbus RTU protocol is the most
basic protocol supported by the UR. Modbus is available via RS232 or RS485 serial links or via ethernet (using the Mod-
bus/TCP specification). The following description is intended primarily for users who wish to develop their own master com-
munication drivers and applies to the serial Modbus RTU protocol. Note that:
• The UR always acts as a slave device, meaning that it never initiates communications; it only listens and responds to B
requests issued by a master computer.
• For Modbus®, a subset of the Remote Terminal Unit (RTU) protocol format is supported that allows extensive monitor-
ing, programming, and control functions using read and write register commands.

B.1.2 PHYSICAL LAYER

The Modbus® RTU protocol is hardware-independent so that the physical layer can be any of a variety of standard hard-
ware configurations including RS232 and RS485. The relay includes a faceplate (front panel) RS232 port and two rear ter-
minal communications ports that may be configured as RS485, fiber optic, 10BaseT, or 10BaseF. Data flow is half-duplex in
all configurations. See Chapter 3 for details on wiring.
Each data byte is transmitted in an asynchronous format consisting of 1 start bit, 8 data bits, 1 stop bit, and possibly 1 parity
bit. This produces a 10 or 11 bit data frame. This can be important for transmission through modems at high bit rates (11 bit
data frames are not supported by many modems at baud rates greater than 300).
The baud rate and parity are independently programmable for each communications port. Baud rates of 300, 1200, 2400,
4800, 9600, 14400, 19200, 28800, 33600, 38400, 57600, or 115200 bps are available. Even, odd, and no parity are avail-
able. Refer to the Communications section of Chapter 5 for further details.
The master device in any system must know the address of the slave device with which it is to communicate. The relay will
not act on a request from a master if the address in the request does not match the relay’s slave address (unless the
address is the broadcast address – see below).
A single setting selects the slave address used for all ports, with the exception that for the faceplate port, the relay will
accept any address when the Modbus® RTU protocol is used.

B.1.3 DATA LINK LAYER

Communications takes place in packets which are groups of asynchronously framed byte data. The master transmits a
packet to the slave and the slave responds with a packet. The end of a packet is marked by ‘dead-time’ on the communica-
tions line. The following describes general format for both transmit and receive packets. For exact details on packet format-
ting, refer to subsequent sections describing each function code.

Table B–1: MODBUS PACKET FORMAT

DESCRIPTION SIZE
SLAVE ADDRESS 1 byte
FUNCTION CODE 1 byte
DATA N bytes
CRC 2 bytes
DEAD TIME 3.5 bytes transmission time

• SLAVE ADDRESS: This is the address of the slave device that is intended to receive the packet sent by the master
and to perform the desired action. Each slave device on a communications bus must have a unique address to prevent
bus contention. All of the relay’s ports have the same address which is programmable from 1 to 254; see Chapter 5 for
details. Only the addressed slave will respond to a packet that starts with its address. Note that the faceplate port is an
exception to this rule; it will act on a message containing any slave address.
A master transmit packet with slave address 0 indicates a broadcast command. All slaves on the communication link
take action based on the packet, but none respond to the master. Broadcast mode is only recognized when associated
with Function Code 05h. For any other function code, a packet with broadcast mode slave address 0 will be ignored.

GE Multilin B30 Bus Differential Relay B-1

 B.1 MODBUS RTU PROTOCOL APPENDIX B

• FUNCTION CODE: This is one of the supported functions codes of the unit which tells the slave what action to per-
form. See the Supported Function Codes section for complete details. An exception response from the slave is indi-
cated by setting the high order bit of the function code in the response packet. See the Exception Responses section
for further details.
• DATA: This will be a variable number of bytes depending on the function code. This may include actual values, set-
tings, or addresses sent by the master to the slave or by the slave to the master.
• CRC: This is a two byte error checking code. The RTU version of Modbus® includes a 16-bit cyclic redundancy check
B (CRC-16) with every packet which is an industry standard method used for error detection. If a Modbus slave device
receives a packet in which an error is indicated by the CRC, the slave device will not act upon or respond to the packet
thus preventing any erroneous operations. See the CRC-16 Algorithm section for details on calculating the CRC.
• DEAD TIME: A packet is terminated when no data is received for a period of 3.5 byte transmission times (about 15 ms
at 2400 bps, 2 ms at 19200 bps, and 300 µs at 115200 bps). Consequently, the transmitting device must not allow gaps
between bytes longer than this interval. Once the dead time has expired without a new byte transmission, all slaves
start listening for a new packet from the master except for the addressed slave.

B.1.4 CRC-16 ALGORITHM

The CRC-16 algorithm essentially treats the entire data stream (data bits only; start, stop and parity ignored) as one contin-
uous binary number. This number is first shifted left 16 bits and then divided by a characteristic polynomial
(11000000000000101B). The 16 bit remainder of the division is appended to the end of the packet, MSByte first. The
resulting packet including CRC, when divided by the same polynomial at the receiver will give a zero remainder if no trans-
mission errors have occurred. This algorithm requires the characteristic polynomial to be reverse bit ordered. The most sig-
nificant bit of the characteristic polynomial is dropped, since it does not affect the value of the remainder.
A C programming language implementation of the CRC algorithm will be provided upon request.

Table B–2: CRC-16 ALGORITHM

SYMBOLS: --> data transfer
A 16 bit working register
Alow low order byte of A
Ahigh high order byte of A
CRC 16 bit CRC-16 result
i,j loop counters
(+) logical EXCLUSIVE-OR operator
N total number of data bytes
Di i-th data byte (i = 0 to N-1)
G 16 bit characteristic polynomial = 1010000000000001 (binary) with MSbit dropped and bit order reversed
shr (x) right shift operator (th LSbit of x is shifted into a carry flag, a '0' is shifted into the MSbit of x, all other bits
are shifted right one location)

ALGORITHM: 1. FFFF (hex) --> A

2. 0 --> i
3. 0 --> j
4. Di (+) Alow --> Alow
5. j + 1 --> j
6. shr (A)
7. Is there a carry? No: go to 8; Yes: G (+) A --> A and continue.
8. Is j = 8? No: go to 5; Yes: continue
9. i + 1 --> i
10. Is i = N? No: go to 3; Yes: continue
11. A --> CRC

B-2 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.2 MODBUS FUNCTION CODES

B.2MODBUS FUNCTION CODES B.2.1 SUPPORTED FUNCTION CODES

Modbus® officially defines function codes from 1 to 127 though only a small subset is generally needed. The relay supports
some of these functions, as summarized in the following table. Subsequent sections describe each function code in detail.

FUNCTION CODE MODBUS DEFINITION GE MULTILIN DEFINITION

HEX
03
DEC
3 Read Holding Registers Read Actual Values or Settings
B
04 4 Read Holding Registers Read Actual Values or Settings
05 5 Force Single Coil Execute Operation
06 6 Preset Single Register Store Single Setting
10 16 Preset Multiple Registers Store Multiple Settings

B.2.2 READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H)

This function code allows the master to read one or more consecutive data registers (actual values or settings) from a relay.
Data registers are always 16 bit (two byte) values transmitted with high order byte first. The maximum number of registers
that can be read in a single packet is 125. See the Modbus Memory Map table for exact details on the data registers.
Since some PLC implementations of Modbus® only support one of function codes 03h and 04h, the relay interpretation
allows either function code to be used for reading one or more consecutive data registers. The data starting address will
determine the type of data being read. Function codes 03h and 04h are therefore identical.
The following table shows the format of the master and slave packets. The example shows a master device requesting 3
register values starting at address 4050h from slave device 11h (17 decimal); the slave device responds with the values 40,
300, and 0 from registers 4050h, 4051h, and 4052h, respectively.

Table B–3: MASTER AND SLAVE DEVICE PACKET TRANSMISSION EXAMPLE

MASTER TRANSMISSION SLAVE RESPONSE
PACKET FORMAT EXAMPLE (HEX) PACKET FORMAT EXAMPLE (HEX)
SLAVE ADDRESS 11 SLAVE ADDRESS 11
FUNCTION CODE 04 FUNCTION CODE 04
DATA STARTING ADDRESS - high 40 BYTE COUNT 06
DATA STARTING ADDRESS - low 50 DATA #1 - high 00
NUMBER OF REGISTERS - high 00 DATA #1 - low 28
NUMBER OF REGISTERS - low 03 DATA #2 - high 01
CRC - low A7 DATA #2 - low 2C
CRC - high 4A DATA #3 - high 00
DATA #3 - low 00
CRC - low 0D
CRC - high 60

GE Multilin B30 Bus Differential Relay B-3

 B.2 MODBUS FUNCTION CODES APPENDIX B

B.2.3 EXECUTE OPERATION (FUNCTION CODE 05H)

This function code allows the master to perform various operations in the relay. Available operations are shown in the Sum-
mary of Operation Codes table below.
The following table shows the format of the master and slave packets. The example shows a master device requesting the
slave device 11h (17 decimal) to perform a reset. The high and low code value bytes always have the values “FF” and “00”
respectively and are a remnant of the original Modbus® definition of this function code.
B
Table B–4: MASTER AND SLAVE DEVICE PACKET TRANSMISSION EXAMPLE
MASTER TRANSMISSION SLAVE RESPONSE
PACKET FORMAT EXAMPLE (HEX) PACKET FORMAT EXAMPLE (HEX)
SLAVE ADDRESS 11 SLAVE ADDRESS 11
FUNCTION CODE 05 FUNCTION CODE 05
OPERATION CODE - high 00 OPERATION CODE - high 00
OPERATION CODE - low 01 OPERATION CODE - low 01
CODE VALUE - high FF CODE VALUE - high FF
CODE VALUE - low 00 CODE VALUE - low 00
CRC - low DF CRC - low DF
CRC - high 6A CRC - high 6A

Table B–5: SUMMARY OF OPERATION CODES FOR FUNCTION 05H

OPERATION DEFINITION DESCRIPTION
CODE (HEX)
0000 NO OPERATION Does not do anything.
0001 RESET Performs the same function as the faceplate RESET key.
0005 CLEAR EVENT RECORDS Performs the same function as the faceplate CLEAR EVENT RECORDS menu
command.
0006 CLEAR OSCILLOGRAPHY Clears all oscillography records.
1000 to 103F VIRTUAL IN 1 to 64 ON/OFF Sets the states of Virtual Inputs 1 to 64 either “ON” or “OFF”.

B.2.4 STORE SINGLE SETTING (FUNCTION CODE 06H)

This function code allows the master to modify the contents of a single setting register in an relay. Setting registers are
always 16 bit (two byte) values transmitted high order byte first. The following table shows the format of the master and
slave packets. The example shows a master device storing the value 200 at memory map address 4051h to slave device
11h (17 dec).

Table B–6: MASTER AND SLAVE DEVICE PACKET TRANSMISSION EXAMPLE

MASTER TRANSMISSION SLAVE RESPONSE
PACKET FORMAT EXAMPLE (HEX) PACKET FORMAT EXAMPLE (HEX)
SLAVE ADDRESS 11 SLAVE ADDRESS 11
FUNCTION CODE 06 FUNCTION CODE 06
DATA STARTING ADDRESS - high 40 DATA STARTING ADDRESS - high 40
DATA STARTING ADDRESS - low 51 DATA STARTING ADDRESS - low 51
DATA - high 00 DATA - high 00
DATA - low C8 DATA - low C8
CRC - low CE CRC - low CE
CRC - high DD CRC - high DD

B-4 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.2 MODBUS FUNCTION CODES

B.2.5 STORE MULTIPLE SETTINGS (FUNCTION CODE 10H)

This function code allows the master to modify the contents of a one or more consecutive setting registers in a relay. Setting
registers are 16-bit (two byte) values transmitted high order byte first. The maximum number of setting registers that can be
stored in a single packet is 60. The following table shows the format of the master and slave packets. The example shows
a master device storing the value 200 at memory map address 4051h, and the value 1 at memory map address 4052h to
slave device 11h (17 decimal).
B
Table B–7: MASTER AND SLAVE DEVICE PACKET TRANSMISSION EXAMPLE
MASTER TRANSMISSION SLAVE RESPONSE
PACKET FORMAT EXAMPLE (HEX) PACKET FORMAT EXMAPLE (HEX)
SLAVE ADDRESS 11 SLAVE ADDRESS 11
FUNCTION CODE 10 FUNCTION CODE 10
DATA STARTING ADDRESS - hi 40 DATA STARTING ADDRESS - hi 40
DATA STARTING ADDRESS - lo 51 DATA STARTING ADDRESS - lo 51
NUMBER OF SETTINGS - hi 00 NUMBER OF SETTINGS - hi 00
NUMBER OF SETTINGS - lo 02 NUMBER OF SETTINGS - lo 02
BYTE COUNT 04 CRC - lo 07
DATA #1 - high order byte 00 CRC - hi 64
DATA #1 - low order byte C8
DATA #2 - high order byte 00
DATA #2 - low order byte 01
CRC - low order byte 12
CRC - high order byte 62

B.2.6 EXCEPTION RESPONSES

Programming or operation errors usually happen because of illegal data in a packet. These errors result in an exception
response from the slave. The slave detecting one of these errors sends a response packet to the master with the high order
bit of the function code set to 1.
The following table shows the format of the master and slave packets. The example shows a master device sending the
unsupported function code 39h to slave device 11.

Table B–8: MASTER AND SLAVE DEVICE PACKET TRANSMISSION EXAMPLE

MASTER TRANSMISSION SLAVE RESPONSE
PACKET FORMAT EXAMPLE (HEX) PACKET FORMAT EXAMPLE (HEX)
SLAVE ADDRESS 11 SLAVE ADDRESS 11
FUNCTION CODE 39 FUNCTION CODE B9
CRC - low order byte CD ERROR CODE 01
CRC - high order byte F2 CRC - low order byte 93
CRC - high order byte 95

GE Multilin B30 Bus Differential Relay B-5

 B.3 FILE TRANSFERS APPENDIX B

B.3FILE TRANSFERS B.3.1 OBTAINING RELAY FILES VIA MODBUS

a) DESCRIPTION
The UR relay has a generic file transfer facility, meaning that you use the same method to obtain all of the different types of
files from the unit. The Modbus registers that implement file transfer are found in the "Modbus File Transfer (Read/Write)"
and "Modbus File Transfer (Read Only)" modules, starting at address 3100 in the Modbus Memory Map. To read a file from
the UR relay, use the following steps:
B 1. Write the filename to the "Name of file to read" register using a write multiple registers command. If the name is shorter
than 80 characters, you may write only enough registers to include all the text of the filename. Filenames are not case
sensitive.
2. Repeatedly read all the registers in "Modbus File Transfer (Read Only)" using a read multiple registers command. It is
not necessary to read the entire data block, since the UR relay will remember which was the last register you read. The
"position" register is initially zero and thereafter indicates how many bytes (2 times the number of registers) you have
read so far. The "size of..." register indicates the number of bytes of data remaining to read, to a maximum of 244.
3. Keep reading until the "size of..." register is smaller than the number of bytes you are transferring. This condition indi-
cates end of file. Discard any bytes you have read beyond the indicated block size.
4. If you need to re-try a block, read only the "size of.." and "block of data", without reading the position. The file pointer is
only incremented when you read the position register, so the same data block will be returned as was read in the pre-
vious operation. On the next read, check to see if the position is where you expect it to be, and discard the previous
block if it is not (this condition would indicate that the UR relay did not process your original read request).
The UR relay retains connection-specific file transfer information, so files may be read simultaneously on multiple Modbus
connections.

b) OTHER PROTOCOLS
All the files available via Modbus may also be retrieved using the standard file transfer mechanisms in other protocols (for
example, TFTP or MMS).

c) COMTRADE, OSCILLOGRAPHY, AND DATA LOGGER FILES

Oscillography files are formatted using the COMTRADE file format per IEEE PC37.111 Draft 7c (02 September 1997). The
files may be obtained in either text or binary COMTRADE format.

d) READING OSCILLOGRAPHY FILES

Familiarity with the oscillography feature is required to understand the following description. Refer to the Oscillography sec-
tion in Chapter 5 for additional details.
The Oscillography Number of Triggers register is incremented by one every time a new oscillography file is triggered (cap-
tured) and cleared to zero when oscillography data is cleared. When a new trigger occurs, the associated oscillography file
is assigned a file identifier number equal to the incremented value of this register; the newest file number is equal to the
Oscillography_Number_of_Triggers register. This register can be used to determine if any new data has been captured by
periodically reading it to see if the value has changed; if the number has increased then new data is available.
The Oscillography Number of Records register specifies the maximum number of files (and the number of cycles of data
per file) that can be stored in memory of the relay. The Oscillography Available Records register specifies the actual num-
ber of files that are stored and still available to be read out of the relay.
Writing “Yes” (i.e. the value 1) to the Oscillography Clear Data register clears oscillography data files, clears both the Oscil-
lography Number of Triggers and Oscillography Available Records registers to zero, and sets the Oscillography Last
Cleared Date to the present date and time.
To read binary COMTRADE oscillography files, read the following filenames:
OSCnnnn.CFG and OSCnnn.DAT
Replace “nnn” with the desired oscillography trigger number. For ASCII format, use the following file names
OSCAnnnn.CFG and OSCAnnn.DAT

B-6 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.3 FILE TRANSFERS

e) READING EVENT RECORDER FILES

To read the entire event recorder contents in ASCII format (the only available format), use the following filename:
EVT.TXT
To read from a specific record to the end of the log, use the following filename:
EVTnnn.TXT (replace nnn with the desired starting record number)
To read from a specific record to another specific record, use the following filename:
B
EVT.TXT xxxxx yyyyy (replace xxxxx with the starting record number and yyyyy with the ending record number)

B.3.2 MODBUS PASSWORD OPERATION

The COMMAND password is set up at memory location 4000. Storing a value of “0” removes COMMAND password protec-
tion. When reading the password setting, the encrypted value (zero if no password is set) is returned. COMMAND security
is required to change the COMMAND password. Similarly, the SETTING password is set up at memory location 4002.
These are the same settings and encrypted values found in the SETTINGS PRODUCT SETUP PASSWORD SECURITY
menu via the keypad. Enabling password security for the faceplate display will also enable it for Modbus, and vice-versa.
To gain COMMAND level security access, the COMMAND password must be entered at memory location 4008. To gain
SETTING level security access, the SETTING password must be entered at memory location 400A. The entered SETTING
password must match the current SETTING password setting, or must be zero, to change settings or download firmware.
COMMAND and SETTING passwords each have a 30-minute timer. Each timer starts when you enter the particular pass-
word, and is re-started whenever you “use” it. For example, writing a setting re-starts the SETTING password timer and
writing a command register or forcing a coil re-starts the COMMAND password timer. The value read at memory location
4010 can be used to confirm whether a COMMAND password is enabled or disabled (0 for Disabled). The value read at
memory location 4011 can be used to confirm whether a SETTING password is enabled or disabled.
COMMAND or SETTING password security access is restricted to the particular port or particular TCP/IP connection on
which the entry was made. Passwords must be entered when accessing the relay through other ports or connections, and
the passwords must be re-entered after disconnecting and re-connecting on TCP/IP.

GE Multilin B30 Bus Differential Relay B-7

 B.4 MEMORY MAPPING APPENDIX B

B.4MEMORY MAPPING B.4.1 MODBUS MEMORY MAP

Table B–9: MODBUS MEMORY MAP (Sheet 1 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
Product Information (Read Only)
0000 UR Product Type 0 to 65535 --- 1 F001 0
B 0002 Product Version
Product Information (Read Only -- Written by Factory)
0 to 655.35 --- 0.01 F001 1

0010 Serial Number --- --- --- F203 “0”

0020 Manufacturing Date 0 to 4294967295 --- 1 F050 0
0022 Modification Number 0 to 65535 --- 1 F001 0
0040 Order Code --- --- --- F204 “Order Code x”
0090 Ethernet MAC Address --- --- --- F072 0
0093 Reserved (13 items) --- --- --- F001 0
00A0 CPU Module Serial Number --- --- --- F203 (none)
00B0 CPU Supplier Serial Number --- --- --- F203 (none)
00C0 Ethernet Sub Module Serial Number (8 items) --- --- --- F203 (none)
Self Test Targets (Read Only)
0200 Self Test States (2 items) 0 to 4294967295 0 1 F143 0
Front Panel (Read Only)
0204 LED Column n State, n = 1 to 10 (10 items) 0 to 65535 --- 1 F501 0
0220 Display Message --- --- --- F204 (none)
0248 Last Key Pressed 0 to 47 --- 1 F530 0 (None)
Keypress Emulation (Read/Write)
0280 Simulated keypress -- write zero before each keystroke 0 to 42 --- 1 F190 0 (No key -- use
between real keys)
Virtual Input Commands (Read/Write Command) (64 modules)
0400 Virtual Input 1 State 0 to 1 --- 1 F108 0 (Off)
0401 Virtual Input 2 State 0 to 1 --- 1 F108 0 (Off)
0402 Virtual Input 3 State 0 to 1 --- 1 F108 0 (Off)
0403 Virtual Input 4 State 0 to 1 --- 1 F108 0 (Off)
0404 Virtual Input 5 State 0 to 1 --- 1 F108 0 (Off)
0405 Virtual Input 6 State 0 to 1 --- 1 F108 0 (Off)
0406 Virtual Input 7 State 0 to 1 --- 1 F108 0 (Off)
0407 Virtual Input 8 State 0 to 1 --- 1 F108 0 (Off)
0408 Virtual Input 9 State 0 to 1 --- 1 F108 0 (Off)
0409 Virtual Input 10 State 0 to 1 --- 1 F108 0 (Off)
040A Virtual Input 11 State 0 to 1 --- 1 F108 0 (Off)
040B Virtual Input 12 State 0 to 1 --- 1 F108 0 (Off)
040C Virtual Input 13 State 0 to 1 --- 1 F108 0 (Off)
040D Virtual Input 14 State 0 to 1 --- 1 F108 0 (Off)
040E Virtual Input 15 State 0 to 1 --- 1 F108 0 (Off)
040F Virtual Input 16 State 0 to 1 --- 1 F108 0 (Off)
0410 Virtual Input 17 State 0 to 1 --- 1 F108 0 (Off)
0411 Virtual Input 18 State 0 to 1 --- 1 F108 0 (Off)
0412 Virtual Input 19 State 0 to 1 --- 1 F108 0 (Off)
0413 Virtual Input 20 State 0 to 1 --- 1 F108 0 (Off)
0414 Virtual Input 21 State 0 to 1 --- 1 F108 0 (Off)
0415 Virtual Input 22 State 0 to 1 --- 1 F108 0 (Off)
0416 Virtual Input 23 State 0 to 1 --- 1 F108 0 (Off)
0417 Virtual Input 24 State 0 to 1 --- 1 F108 0 (Off)
0418 Virtual Input 25 State 0 to 1 --- 1 F108 0 (Off)
0419 Virtual Input 26 State 0 to 1 --- 1 F108 0 (Off)
041A Virtual Input 27 State 0 to 1 --- 1 F108 0 (Off)
041B Virtual Input 28 State 0 to 1 --- 1 F108 0 (Off)

B-8 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 2 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
041C Virtual Input 29 State 0 to 1 --- 1 F108 0 (Off)
041D Virtual Input 30 State 0 to 1 --- 1 F108 0 (Off)
041E Virtual Input 31 State 0 to 1 --- 1 F108 0 (Off)
041F Virtual Input 32 State 0 to 1 --- 1 F108 0 (Off)
0420 Virtual Input 33 State 0 to 1 --- 1 F108 0 (Off)
0421 Virtual Input 34 State 0 to 1 --- 1 F108 0 (Off) B
0422 Virtual Input 35 State 0 to 1 --- 1 F108 0 (Off)
0423 Virtual Input 36 State 0 to 1 --- 1 F108 0 (Off)
0424 Virtual Input 37 State 0 to 1 --- 1 F108 0 (Off)
0425 Virtual Input 38 State 0 to 1 --- 1 F108 0 (Off)
0426 Virtual Input 39 State 0 to 1 --- 1 F108 0 (Off)
0427 Virtual Input 40 State 0 to 1 --- 1 F108 0 (Off)
0428 Virtual Input 41 State 0 to 1 --- 1 F108 0 (Off)
0429 Virtual Input 42 State 0 to 1 --- 1 F108 0 (Off)
042A Virtual Input 43 State 0 to 1 --- 1 F108 0 (Off)
042B Virtual Input 44 State 0 to 1 --- 1 F108 0 (Off)
042C Virtual Input 45 State 0 to 1 --- 1 F108 0 (Off)
042D Virtual Input 46 State 0 to 1 --- 1 F108 0 (Off)
042E Virtual Input 47 State 0 to 1 --- 1 F108 0 (Off)
042F Virtual Input 48 State 0 to 1 --- 1 F108 0 (Off)
0430 Virtual Input 49 State 0 to 1 --- 1 F108 0 (Off)
0431 Virtual Input 50 State 0 to 1 --- 1 F108 0 (Off)
0432 Virtual Input 51 State 0 to 1 --- 1 F108 0 (Off)
0433 Virtual Input 52 State 0 to 1 --- 1 F108 0 (Off)
0434 Virtual Input 53 State 0 to 1 --- 1 F108 0 (Off)
0435 Virtual Input 54 State 0 to 1 --- 1 F108 0 (Off)
0436 Virtual Input 55 State 0 to 1 --- 1 F108 0 (Off)
0437 Virtual Input 56 State 0 to 1 --- 1 F108 0 (Off)
0438 Virtual Input 57 State 0 to 1 --- 1 F108 0 (Off)
0439 Virtual Input 58 State 0 to 1 --- 1 F108 0 (Off)
043A Virtual Input 59 State 0 to 1 --- 1 F108 0 (Off)
043B Virtual Input 60 State 0 to 1 --- 1 F108 0 (Off)
043C Virtual Input 61 State 0 to 1 --- 1 F108 0 (Off)
043D Virtual Input 62 State 0 to 1 --- 1 F108 0 (Off)
043E Virtual Input 63 State 0 to 1 --- 1 F108 0 (Off)
043F Virtual Input 64 State 0 to 1 --- 1 F108 0 (Off)
Digital Counter States (Read Only Non-Volatile) (8 modules)
0800 Digital Counter 1 Value -2147483647 to --- 1 F004 0
2147483647
0802 Digital Counter 1 Frozen -2147483647 to --- 1 F004 0
2147483647
0804 Digital Counter 1 Frozen Time Stamp 0 to 4294967295 --- 1 F050 0
0806 Digital Counter 1 Frozen Time Stamp us 0 to 4294967295 --- 1 F003 0
0808 ...Repeated for Digital Counter 2
0810 ...Repeated for Digital Counter 3
0818 ...Repeated for Digital Counter 4
0820 ...Repeated for Digital Counter 5
0828 ...Repeated for Digital Counter 6
0830 ...Repeated for Digital Counter 7
0838 ...Repeated for Digital Counter 8
FlexStates (Read Only)
0900 FlexState Bits (16 items) 0 to 65535 --- 1 F001 0
Element States (Read Only)
1000 Element Operate States (64 items) 0 to 65535 --- 1 F502 0

GE Multilin B30 Bus Differential Relay B-9

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 3 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
User Displays Actuals (Read Only)
1080 Formatted user-definable displays (16 items) --- --- --- F200 (none)
Modbus User Map Actuals (Read Only)
1200 User Map Values (256 items) 0 to 65535 --- 1 F001 0
Element Targets (Read Only)

B 14C0
14C1
Target Sequence
Number of Targets
0 to 65535
0 to 65535
---
---
1
1
F001
F001
0
0
Element Targets (Read/Write)
14C2 Target to Read 0 to 65535 --- 1 F001 0
Element Targets (Read Only)
14C3 Target Message --- --- --- F200 “.”
Digital Input/Output States (Read Only)
1500 Contact Input States (6 items) 0 to 65535 --- 1 F500 0
1508 Virtual Input States (8 items) 0 to 65535 --- 1 F500 0
1510 Contact Output States (4 items) 0 to 65535 --- 1 F500 0
1518 Contact Output Current States (4 items) 0 to 65535 --- 1 F500 0
1520 Contact Output Voltage States (4 items) 0 to 65535 --- 1 F500 0
1528 Virtual Output States (6 items) 0 to 65535 --- 1 F500 0
1530 Contact Output Detectors (4 items) 0 to 65535 --- 1 F500 0
Remote Input/Output States (Read Only)
1540 Remote Device 1 States 0 to 65535 --- 1 F500 0
1542 Remote Input States (4 items) 0 to 65535 --- 1 F500 0
1550 Remote Devices Online 0 to 1 --- 1 F126 0 (No)
Remote Device Status (Read Only) (16 modules)
1551 Remote Device 1 StNum 0 to 4294967295 --- 1 F003 0
1553 Remote Device 1 SqNum 0 to 4294967295 --- 1 F003 0
1555 ...Repeated for Remote Device 2
1559 ...Repeated for Remote Device 3
155D ...Repeated for Remote Device 4
1561 ...Repeated for Remote Device 5
1565 ...Repeated for Remote Device 6
1569 ...Repeated for Remote Device 7
156D ...Repeated for Remote Device 8
1571 ...Repeated for Remote Device 9
1575 ...Repeated for Remote Device 10
1579 ...Repeated for Remote Device 11
157D ...Repeated for Remote Device 12
1581 ...Repeated for Remote Device 13
1585 ...Repeated for Remote Device 14
1589 ...Repeated for Remote Device 15
158D ...Repeated for Remote Device 16
Platform Direct Input/Output States (Read Only)
15C0 Direct input states (6 items) 0 to 65535 --- 1 F500 0
15C8 Direct outputs average message return time 1 0 to 65535 ms 1 F001 0
15C9 Direct outputs average message return time 2 0 to 65535 ms 1 F001 0
15CA Direct inputs/outputs unreturned message count - Ch. 1 0 to 65535 --- 1 F001 0
15CB Direct inputs/outputs unreturned message count - Ch. 2 0 to 65535 --- 1 F001 0
15D0 Direct device states 0 to 65535 --- 1 F500 0
15D1 Reserved 0 to 65535 --- 1 F001 0
15D2 Direct inputs/outputs CRC fail count 1 0 to 65535 --- 1 F001 0
15D3 Direct inputs/outputs CRC fail count 2 0 to 65535 --- 1 F001 0
Ethernet Fibre Channel Status (Read/Write)
1610 Ethernet primary fibre channel status 0 to 2 --- 1 F134 0 (Fail)
1611 Ethernet secondary fibre channel status 0 to 2 --- 1 F134 0 (Fail)

B-10 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 4 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
Source Current (Read Only) (6 modules)
1800 Source 1 Phase A Current RMS 0 to 999999.999 A 0.001 F060 0
1802 Source 1 Phase B Current RMS 0 to 999999.999 A 0.001 F060 0
1804 Source 1 Phase C Current RMS 0 to 999999.999 A 0.001 F060 0
1806 Source 1 Neutral Current RMS 0 to 999999.999 A 0.001 F060 0
1808 Source 1 Phase A Current Magnitude 0 to 999999.999 A 0.001 F060 0 B
180A Source 1 Phase A Current Angle -359.9 to 0 degrees 0.1 F002 0
180B Source 1 Phase B Current Magnitude 0 to 999999.999 A 0.001 F060 0
180D Source 1 Phase B Current Angle -359.9 to 0 degrees 0.1 F002 0
180E Source 1 Phase C Current Magnitude 0 to 999999.999 A 0.001 F060 0
1810 Source 1 Phase C Current Angle -359.9 to 0 degrees 0.1 F002 0
1811 Source 1 Neutral Current Magnitude 0 to 999999.999 A 0.001 F060 0
1813 Source 1 Neutral Current Angle -359.9 to 0 degrees 0.1 F002 0
1814 Source 1 Ground Current RMS 0 to 999999.999 A 0.001 F060 0
1816 Source 1 Ground Current Magnitude 0 to 999999.999 A 0.001 F060 0
1818 Source 1 Ground Current Angle -359.9 to 0 degrees 0.1 F002 0
1819 Source 1 Zero Sequence Current Magnitude 0 to 999999.999 A 0.001 F060 0
181B Source 1 Zero Sequence Current Angle -359.9 to 0 degrees 0.1 F002 0
181C Source 1 Positive Sequence Current Magnitude 0 to 999999.999 A 0.001 F060 0
181E Source 1 Positive Sequence Current Angle -359.9 to 0 degrees 0.1 F002 0
181F Source 1 Negative Sequence Current Magnitude 0 to 999999.999 A 0.001 F060 0
1821 Source 1 Negative Sequence Current Angle -359.9 to 0 degrees 0.1 F002 0
1822 Source 1 Differential Ground Current Magnitude 0 to 999999.999 A 0.001 F060 0
1824 Source 1 Differential Ground Current Angle -359.9 to 0 degrees 0.1 F002 0
1825 Reserved (27 items) --- --- --- F001 0
1840 ...Repeated for Source 2
1880 ...Repeated for Source 3
18C0 ...Repeated for Source 4
1900 ...Repeated for Source 5
1940 ...Repeated for Source 6
Source Voltage (Read Only) (6 modules)
1A00 Source 1 Phase AG Voltage RMS 0 to 999999.999 V 0.001 F060 0
1A02 Source 1 Phase BG Voltage RMS 0 to 999999.999 V 0.001 F060 0
1A04 Source 1 Phase CG Voltage RMS 0 to 999999.999 V 0.001 F060 0
1A06 Source 1 Phase AG Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A08 Source 1 Phase AG Voltage Angle -359.9 to 0 degrees 0.1 F002 0
1A09 Source 1 Phase BG Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A0B Source 1 Phase BG Voltage Angle -359.9 to 0 degrees 0.1 F002 0
1A0C Source 1 Phase CG Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A0E Source 1 Phase CG Voltage Angle -359.9 to 0 degrees 0.1 F002 0
1A0F Source 1 Phase AB or AC Voltage RMS 0 to 999999.999 V 0.001 F060 0
1A11 Source 1 Phase BC or BA Voltage RMS 0 to 999999.999 V 0.001 F060 0
1A13 Source 1 Phase CA or CB Voltage RMS 0 to 999999.999 V 0.001 F060 0
1A15 Source 1 Phase AB or AC Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A17 Source 1 Phase AB or AC Voltage Angle -359.9 to 0 degrees 0.1 F002 0
1A18 Source 1 Phase BC or BA Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A1A Source 1 Phase BC or BA Voltage Angle -359.9 to 0 degrees 0.1 F002 0
1A1B Source 1 Phase CA or CB Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A1D Source 1 Phase CA or CB Voltage Angle -359.9 to 0 degrees 0.1 F002 0
1A1E Source 1 Auxiliary Voltage RMS 0 to 999999.999 V 0.001 F060 0
1A20 Source 1 Auxiliary Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A22 Source 1 Auxiliary Voltage Angle -359.9 to 0 degrees 0.1 F002 0
1A23 Source 1 Zero Sequence Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A25 Source 1 Zero Sequence Voltage Angle -359.9 to 0 degrees 0.1 F002 0

GE Multilin B30 Bus Differential Relay B-11

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 5 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
1A26 Source 1 Positive Sequence Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A28 Source 1 Positive Sequence Voltage Angle -359.9 to 0 degrees 0.1 F002 0
1A29 Source 1 Negative Sequence Voltage Magnitude 0 to 999999.999 V 0.001 F060 0
1A2B Source 1 Negative Sequence Voltage Angle -359.9 to 0 degrees 0.1 F002 0
1A2C Reserved (20 items) --- --- --- F001 0

B 1A40
1A80
...Repeated for Source 2
...Repeated for Source 3
1AC0 ...Repeated for Source 4
1B00 ...Repeated for Source 5
1B40 ...Repeated for Source 6
Source Frequency (Read Only) (6 modules)
1D80 Frequency for Source 1 2.000 to 90.000 Hz 0.001 F003 0
1D81 Frequency for Source 2 2.000 to 90.000 Hz 0.001 F003 0
1D82 Frequency for Source 3 2.000 to 90.000 Hz 0.001 F003 0
1D83 Frequency for Source 4 2.000 to 90.000 Hz 0.001 F003 0
1D84 Frequency for Source 5 2.000 to 90.000 Hz 0.001 F003 0
1D85 Frequency for Source 6 2.000 to 90.000 Hz 0.001 F003 0
Passwords Unauthorized Access (Read/Write Command)
2230 Reset Unauthorized Access 0 to 1 --- 1 F126 0 (No)
Bus Actuals (Read Only)
2500 Bus Differential IA Magnitude 0 to 999999.999 A 0.001 F060 0
2502 Bus Differential IA Angle -359.9 to 0 degrees 0.1 F002 0
2503 Bus Differential IB Magnitude 0 to 999999.999 A 0.001 F060 0
2505 Bus Differential IB Angle -359.9 to 0 degrees 0.1 F002 0
2506 Bus Differential IC Magnitude 0 to 999999.999 A 0.001 F060 0
2508 Bus Differential IC Angle -359.9 to 0 degrees 0.1 F002 0
2509 Bus Differential Rest IA Magnitude 0 to 999999.999 A 0.001 F060 0
250B Bus Differential Rest IA Angle -359.9 to 0 degrees 0.1 F002 0
250C Bus Differential Rest IB Magnitude 0 to 999999.999 A 0.001 F060 0
250E Bus Differential Rest IB Angle -359.9 to 0 degrees 0.1 F002 0
250F Bus Differential Rest IC Magnitude 0 to 999999.999 A 0.001 F060 0
2511 Bus Differential Rest IC Angle -359.9 to 0 degrees 0.1 F002 0
2515 Bus Maximum CT Primary 0 to 50000 --- 1 F060 1
2517 Reserved (9 items) --- --- --- F001 0
Expanded FlexStates (Read Only)
2B00 FlexStates, one per register (256 items) 0 to 1 --- 1 F108 0 (Off)
Expanded Digital Input/Output states (Read Only)
2D00 Contact Input States, one per register (96 items) 0 to 1 --- 1 F108 0 (Off)
2D80 Contact Output States, one per register (64 items) 0 to 1 --- 1 F108 0 (Off)
2E00 Virtual Output States, one per register (96 items) 0 to 1 --- 1 F108 0 (Off)
Expanded Remote Input/Output Status (Read Only)
2F00 Remote Device States, one per register (16 items) 0 to 1 --- 1 F155 0 (Offline)
2F80 Remote Input States, one per register (64 items) 0 to 1 --- 1 F108 0 (Off)
Oscillography Values (Read Only)
3000 Oscillography Number of Triggers 0 to 65535 --- 1 F001 0
3001 Oscillography Available Records 0 to 65535 --- 1 F001 0
3002 Oscillography Last Cleared Date 0 to 400000000 --- 1 F050 0
3004 Oscillography Number Of Cycles Per Record 0 to 65535 --- 1 F001 0
Oscillography Commands (Read/Write Command)
3005 Oscillography Force Trigger 0 to 1 --- 1 F126 0 (No)
3011 Oscillography Clear Data 0 to 1 --- 1 F126 0 (No)
User Programmable Fault Report Commands (Read/Write Command)
3060 User Fault Report Clear 0 to 1 --- 1 F126 0 (No)

B-12 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 6 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
User Programmable Fault Report Actuals (Read Only)
3070 Newest Record Number 0 to 65535 --- 1 F001 0
3071 Cleared Date 0 to 4294967295 --- 1 F050 0
3073 Report Date (10 items) 0 to 4294967295 --- 1 F050 0
User Programmable Fault Report (Read/Write Setting) (2 modules)
3090 Fault Report 1 Fault Trigger 0 to 65535 --- 1 F300 0 B
3091 Fault Report 1 Function 0 to 1 --- 1 F102 0 (Disabled)
3092 Fault Report 1 Prefault Trigger 0 to 65535 --- 1 F300 0
3093 Fault Report Analog Channel 1 (32 items) 0 to 65536 --- 1 F600 0
30B3 Fault Report 1 Reserved (5 items) --- --- --- F001 0
30B8 ...Repeated for Fault Report 2
Modbus File Transfer (Read/Write)
3100 Name of file to read --- --- --- F204 (none)
Modbus File Transfer (Read Only)
3200 Character position of current block within file 0 to 4294967295 --- 1 F003 0
3202 Size of currently-available data block 0 to 65535 --- 1 F001 0
3203 Block of data from requested file (122 items) 0 to 65535 --- 1 F001 0
Event Recorder (Read Only)
3400 Events Since Last Clear 0 to 4294967295 --- 1 F003 0
3402 Number of Available Events 0 to 4294967295 --- 1 F003 0
3404 Event Recorder Last Cleared Date 0 to 4294967295 --- 1 F050 0
Event Recorder (Read/Write Command)
3406 Event Recorder Clear Command 0 to 1 --- 1 F126 0 (No)
DCMA Input Values (Read Only) (24 modules)
34C0 DCMA Inputs 1 Value -9999999 to 9999999 --- 1 F004 0
34C2 DCMA Inputs 2 Value -9999999 to 9999999 --- 1 F004 0
34C4 DCMA Inputs 3 Value -9999999 to 9999999 --- 1 F004 0
34C6 DCMA Inputs 4 Value -9999999 to 9999999 --- 1 F004 0
34C8 DCMA Inputs 5 Value -9999999 to 9999999 --- 1 F004 0
34CA DCMA Inputs 6 Value -9999999 to 9999999 --- 1 F004 0
34CC DCMA Inputs 7 Value -9999999 to 9999999 --- 1 F004 0
34CE DCMA Inputs 8 Value -9999999 to 9999999 --- 1 F004 0
34D0 DCMA Inputs 9 Value -9999999 to 9999999 --- 1 F004 0
34D2 DCMA Inputs 10 Value -9999999 to 9999999 --- 1 F004 0
34D4 DCMA Inputs 11 Value -9999999 to 9999999 --- 1 F004 0
34D6 DCMA Inputs 12 Value -9999999 to 9999999 --- 1 F004 0
34D8 DCMA Inputs 13 Value -9999999 to 9999999 --- 1 F004 0
34DA DCMA Inputs 14 Value -9999999 to 9999999 --- 1 F004 0
34DC DCMA Inputs 15 Value -9999999 to 9999999 --- 1 F004 0
34DE DCMA Inputs 16 Value -9999999 to 9999999 --- 1 F004 0
34E0 DCMA Inputs 17 Value -9999999 to 9999999 --- 1 F004 0
34E2 DCMA Inputs 18 Value -9999999 to 9999999 --- 1 F004 0
34E4 DCMA Inputs 19 Value -9999999 to 9999999 --- 1 F004 0
34E6 DCMA Inputs 20 Value -9999999 to 9999999 --- 1 F004 0
34E8 DCMA Inputs 21 Value -9999999 to 9999999 --- 1 F004 0
34EA DCMA Inputs 22 Value -9999999 to 9999999 --- 1 F004 0
34EC DCMA Inputs 23 Value -9999999 to 9999999 --- 1 F004 0
34EE DCMA Inputs 24 Value -9999999 to 9999999 --- 1 F004 0
RTD Input Values (Read Only) (48 modules)
34F0 RTD Input 1 Value -32768 to 32767 °C 1 F002 0
34F1 RTD Input 2 Value -32768 to 32767 °C 1 F002 0
34F2 RTD Input 3 Value -32768 to 32767 °C 1 F002 0
34F3 RTD Input 4 Value -32768 to 32767 °C 1 F002 0
34F4 RTD Input 5 Value -32768 to 32767 °C 1 F002 0

GE Multilin B30 Bus Differential Relay B-13

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 7 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
34F5 RTD Input 6 Value -32768 to 32767 °C 1 F002 0
34F6 RTD Input 7 Value -32768 to 32767 °C 1 F002 0
34F7 RTD Input 8 Value -32768 to 32767 °C 1 F002 0
34F8 RTD Input 9 Value -32768 to 32767 °C 1 F002 0
34F9 RTD Input 10 Value -32768 to 32767 °C 1 F002 0

B 34FA
34FB
RTD Input 11 Value
RTD Input 12 Value
-32768 to 32767
-32768 to 32767
°C
°C
1
1
F002
F002
0
0
34FC RTD Input 13 Value -32768 to 32767 °C 1 F002 0
34FD RTD Input 14 Value -32768 to 32767 °C 1 F002 0
34FE RTD Input 15 Value -32768 to 32767 °C 1 F002 0
34FF RTD Input 16 Value -32768 to 32767 °C 1 F002 0
3500 RTD Input 17 Value -32768 to 32767 °C 1 F002 0
3501 RTD Input 18 Value -32768 to 32767 °C 1 F002 0
3502 RTD Input 19 Value -32768 to 32767 °C 1 F002 0
3503 RTD Input 20 Value -32768 to 32767 °C 1 F002 0
3504 RTD Input 21 Value -32768 to 32767 °C 1 F002 0
3505 RTD Input 22 Value -32768 to 32767 °C 1 F002 0
3506 RTD Input 23 Value -32768 to 32767 °C 1 F002 0
3507 RTD Input 24 Value -32768 to 32767 °C 1 F002 0
3508 RTD Input 25 Value -32768 to 32767 °C 1 F002 0
3509 RTD Input 26 Value -32768 to 32767 °C 1 F002 0
350A RTD Input 27 Value -32768 to 32767 °C 1 F002 0
350B RTD Input 28 Value -32768 to 32767 °C 1 F002 0
350C RTD Input 29 Value -32768 to 32767 °C 1 F002 0
350D RTD Input 30 Value -32768 to 32767 °C 1 F002 0
350E RTD Input 31 Value -32768 to 32767 °C 1 F002 0
350F RTD Input 32 Value -32768 to 32767 °C 1 F002 0
3510 RTD Input 33 Value -32768 to 32767 °C 1 F002 0
3511 RTD Input 34 Value -32768 to 32767 °C 1 F002 0
3512 RTD Input 35 Value -32768 to 32767 °C 1 F002 0
3513 RTD Input 36 Value -32768 to 32767 °C 1 F002 0
3514 RTD Input 37 Value -32768 to 32767 °C 1 F002 0
3515 RTD Input 38 Value -32768 to 32767 °C 1 F002 0
3516 RTD Input 39 Value -32768 to 32767 °C 1 F002 0
3517 RTD Input 40 Value -32768 to 32767 °C 1 F002 0
3518 RTD Input 41 Value -32768 to 32767 °C 1 F002 0
3519 RTD Input 42 Value -32768 to 32767 °C 1 F002 0
351A RTD Input 43 Value -32768 to 32767 °C 1 F002 0
351B RTD Input 44 Value -32768 to 32767 °C 1 F002 0
351C RTD Input 45 Value -32768 to 32767 °C 1 F002 0
351D RTD Input 46 Value -32768 to 32767 °C 1 F002 0
351E RTD Input 47 Value -32768 to 32767 °C 1 F002 0
351F RTD Input 48 Value -32768 to 32767 °C 1 F002 0
Expanded Direct Input/Output Status (Read Only)
3560 Direct Device States, one per register (8 items) 0 to 1 --- 1 F155 0 (Offline)
3570 Direct Input States, one per register (96 items) 0 to 1 --- 1 F108 0 (Off)
Passwords (Read/Write Command)
4000 Command Password Setting 0 to 4294967295 --- 1 F003 0
Passwords (Read/Write Setting)
4002 Setting Password Setting 0 to 4294967295 --- 1 F003 0
Passwords (Read/Write)
4008 Command Password Entry 0 to 4294967295 --- 1 F003 0
400A Setting Password Entry 0 to 4294967295 --- 1 F003 0

B-14 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 8 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
Passwords (Read Only)
4010 Command Password Status 0 to 1 --- 1 F102 0 (Disabled)
4011 Setting Password Status 0 to 1 --- 1 F102 0 (Disabled)
User Display Invoke (Read/Write Setting)
4040 Invoke and Scroll Through User Display Menu Operand 0 to 65535 --- 1 F300 0
LED Test (Read/Write Setting) B
4048 LED Test Function 0 to 1 --- 1 F102 0 (Disabled)
4049 LED Test Control 0 to 65535 --- 1 F300 0
Preferences (Read/Write Setting)
404F Language 0 to 3 --- 1 F531 0 (English)
4050 Flash Message Time 0.5 to 10 s 0.1 F001 10
4051 Default Message Timeout 10 to 900 s 1 F001 300
4052 Default Message Intensity 0 to 3 --- 1 F101 0 (25%)
4053 Screen Saver Feature 0 to 1 --- 1 F102 0 (Disabled)
4054 Screen Saver Wait Time 1 to 65535 min 1 F001 30
4055 Current Cutoff Level 0.002 to 0.02 pu 0.001 F001 20
4056 Voltage Cutoff Level 0.1 to 1 V 0.1 F001 10
Communications (Read/Write Setting)
407E COM1 minimum response time 0 to 1000 ms 10 F001 0
407F COM2 minimum response time 0 to 1000 ms 10 F001 0
4080 Modbus Slave Address 1 to 254 --- 1 F001 254
4083 RS485 Com1 Baud Rate 0 to 11 --- 1 F112 8 (115200)
4084 RS485 Com1 Parity 0 to 2 --- 1 F113 0 (None)
4085 RS485 Com2 Baud Rate 0 to 11 --- 1 F112 8 (115200)
4086 RS485 Com2 Parity 0 to 2 --- 1 F113 0 (None)
4087 IP Address 0 to 4294967295 --- 1 F003 56554706
4089 IP Subnet Mask 0 to 4294967295 --- 1 F003 4294966272
408B Gateway IP Address 0 to 4294967295 --- 1 F003 56554497
408D Network Address NSAP --- --- --- F074 0
409A DNP Channel 1 Port 0 to 4 --- 1 F177 0 (None)
409B DNP Channel 2 Port 0 to 4 --- 1 F177 0 (None)
409C DNP Address 0 to 65519 --- 1 F001 1
409D Reserved 0 to 1 --- 1 F001 0
409E DNP Client Addresses (2 items) 0 to 4294967295 --- 1 F003 0
40A3 TCP Port Number for the Modbus protocol 1 to 65535 --- 1 F001 502
40A4 TCP/UDP Port Number for the DNP Protocol 1 to 65535 --- 1 F001 20000
40A5 TCP Port Number for the HTTP (Web Server) Protocol 1 to 65535 --- 1 F001 80
40A6 Main UDP Port Number for the TFTP Protocol 1 to 65535 --- 1 F001 69
40A7 Data Transfer UDP Port Numbers for the TFTP Protocol 0 to 65535 --- 1 F001 0
(zero means “automatic”) (2 items)
40A9 DNP Unsolicited Responses Function 0 to 1 --- 1 F102 0 (Disabled)
40AA DNP Unsolicited Responses Timeout 0 to 60 s 1 F001 5
40AB DNP Unsolicited Responses Max Retries 1 to 255 --- 1 F001 10
40AC DNP Unsolicited Responses Destination Address 0 to 65519 --- 1 F001 1
40AD Ethernet Operation Mode 0 to 1 --- 1 F192 0 (Half-Duplex)
40AE DNP Current Scale Factor 0 to 8 --- 1 F194 2 (1)
40AF DNP Voltage Scale Factor 0 to 8 --- 1 F194 2 (1)
40B0 DNP Power Scale Factor 0 to 8 --- 1 F194 2 (1)
40B1 DNP Energy Scale Factor 0 to 8 --- 1 F194 2 (1)
40B2 DNP Other Scale Factor 0 to 8 --- 1 F194 2 (1)
40B3 DNP Current Default Deadband 0 to 65535 --- 1 F001 30000
40B4 DNP Voltage Default Deadband 0 to 65535 --- 1 F001 30000
40B5 DNP Power Default Deadband 0 to 65535 --- 1 F001 30000
40B6 DNP Energy Default Deadband 0 to 65535 --- 1 F001 30000

GE Multilin B30 Bus Differential Relay B-15

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 9 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
40B7 DNP Other Default Deadband 0 to 65535 --- 1 F001 30000
40B8 DNP IIN Time Sync Bit Period 1 to 10080 min 1 F001 1440
40B9 DNP Message Fragment Size 30 to 2048 --- 1 F001 240
40BA DNP Client Address 3 0 to 4294967295 --- 1 F003 0
40BC DNP Client Address 4 0 to 4294967295 --- 1 F003 0

B 40BE
40C0
DNP Client Address 5
DNP Number of Paired Binary Output Control Points
0 to 4294967295
0 to 16
---
---
1
1
F003
F001
0
0
40C1 Reserved (31 items) 0 to 1 --- 1 F001 0
40E0 TCP Port Number for the IEC 60870-5-104 Protocol 1 to 65535 --- 1 F001 2404
40E1 IEC 60870-5-104 Protocol Function 0 to 1 --- 1 F102 0 (Disabled)
40E2 IEC 60870-5-104 Protocol Common Address of ASDU 0 to 65535 --- 1 F001 0
40E3 IEC 60870-5-104 Protocol Cyclic Data Trans. Period 1 to 65535 s 1 F001 60
40E4 IEC 60870-5-104 Current Default Threshold 0 to 65535 --- 1 F001 30000
40E5 IEC 60870-5-104 Voltage Default Threshold 0 to 65535 --- 1 F001 30000
40E6 IEC 60870-5-104 Power Default Threshold 0 to 65535 --- 1 F001 30000
40E7 IEC 60870-5-104 Energy Default Threshold 0 to 65535 --- 1 F001 30000
40E8 IEC 60870-5-104 Other Default Threshold 0 to 65535 --- 1 F001 30000
40E9 IEC 60870-5-104 Client Address (5 items) 0 to 4294967295 --- 1 F003 0
40FD IEC 60870-5-104 Communications Reserved (60 items) 0 to 1 --- 1 F001 0
4140 DNP Object 1 Default Variation 1 to 2 --- 1 F001 2
4141 DNP Object 2 Default Variation 1 to 2 --- 1 F001 2
4142 DNP Object 20 Default Variation 0 to 3 --- 1 F523 0 (1)
4143 DNP Object 21 Default Variation 0 to 3 --- 1 F524 0 (1)
4144 DNP Object 22 Default Variation 0 to 3 --- 1 F523 0 (1)
4145 DNP Object 23 Default Variation 0 to 3 --- 1 F523 0 (1)
4146 DNP Object 30 Default Variation 1 to 5 --- 1 F001 1
4147 DNP Object 32 Default Variation 0 to 5 --- 1 F525 0 (1)
Simple Network Time Protocol (Read/Write Setting)
4168 Simple Network Time Protocol (SNTP) Function 0 to 1 --- 1 F102 0 (Disabled)
4169 Simple Network Time Protocol (SNTP) Server IP Address 0 to 4294967295 --- 1 F003 0
416B Simple Network Time Protocol (SNTP) UDP Port Number 1 to 65535 --- 1 F001 123
Clock (Read/Write Command)
41A0 Real Time Clock Set Time 0 to 235959 --- 1 F050 0
Clock (Read/Write Setting)
41A2 SR Date Format 0 to 4294967295 --- 1 F051 0
41A4 SR Time Format 0 to 4294967295 --- 1 F052 0
41A6 IRIG-B Signal Type 0 to 2 --- 1 F114 0 (None)
41A7 Clock Events Enable / Disable 0 to 1 --- 1 F102 0 (Disabled)
Oscillography (Read/Write Setting)
41C0 Oscillography Number of Records 1 to 64 --- 1 F001 15
41C1 Oscillography Trigger Mode 0 to 1 --- 1 F118 0 (Auto. Overwrite)
41C2 Oscillography Trigger Position 0 to 100 % 1 F001 50
41C3 Oscillography Trigger Source 0 to 65535 --- 1 F300 0
41C4 Oscillography AC Input Waveforms 0 to 4 --- 1 F183 2 (16 samples/cycle)
41D0 Oscillography Analog Channel n (16 items) 0 to 65535 --- 1 F600 0
4200 Oscillography Digital Channel n (63 items) 0 to 65535 --- 1 F300 0
Trip and Alarm LEDs (Read/Write Setting)
4260 Trip LED Input FlexLogic Operand 0 to 65535 --- 1 F300 0
4261 Alarm LED Input FlexLogic Operand 0 to 65535 --- 1 F300 0
User Programmable LEDs (Read/Write Setting) (48 modules)
4280 FlexLogic™ Operand to Activate LED 0 to 65535 --- 1 F300 0
4281 User LED type (latched or self-resetting) 0 to 1 --- 1 F127 1 (Self-Reset)
4282 ...Repeated for User-Programmable LED 2
4284 ...Repeated for User-Programmable LED 3

B-16 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 10 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
4286 ...Repeated for User-Programmable LED 4
4288 ...Repeated for User-Programmable LED 5
428A ...Repeated for User-Programmable LED 6
428C ...Repeated for User-Programmable LED 7
428E ...Repeated for User-Programmable LED 8
4290 ...Repeated for User-Programmable LED 9 B
4292 ...Repeated for User-Programmable LED 10
4294 ...Repeated for User-Programmable LED 11
4296 ...Repeated for User-Programmable LED 12
4298 ...Repeated for User-Programmable LED 13
429A ...Repeated for User-Programmable LED 14
429C ...Repeated for User-Programmable LED 15
429E ...Repeated for User-Programmable LED 16
42A0 ...Repeated for User-Programmable LED 17
42A2 ...Repeated for User-Programmable LED 18
42A4 ...Repeated for User-Programmable LED 19
42A6 ...Repeated for User-Programmable LED 20
42A8 ...Repeated for User-Programmable LED 21
42AA ...Repeated for User-Programmable LED 22
42AC ...Repeated for User-Programmable LED 23
42AE ...Repeated for User-Programmable LED 24
42B0 ...Repeated for User-Programmable LED 25
42B2 ...Repeated for User-Programmable LED 26
42B4 ...Repeated for User-Programmable LED 27
42B6 ...Repeated for User-Programmable LED 28
42B8 ...Repeated for User-Programmable LED 29
42BA ...Repeated for User-Programmable LED 30
42BC ...Repeated for User-Programmable LED 31
42BE ...Repeated for User-Programmable LED 32
42C0 ...Repeated for User-Programmable LED 33
42C2 ...Repeated for User-Programmable LED 34
42C4 ...Repeated for User-Programmable LED 35
42C6 ...Repeated for User-Programmable LED 36
42C8 ...Repeated for User-Programmable LED 37
42CA ...Repeated for User-Programmable LED 38
42CC ...Repeated for User-Programmable LED 39
42CE ...Repeated for User-Programmable LED 40
42D0 ...Repeated for User-Programmable LED 41
42D2 ...Repeated for User-Programmable LED 42
42D4 ...Repeated for User-Programmable LED 43
42D6 ...Repeated for User-Programmable LED 44
42D8 ...Repeated for User-Programmable LED 45
42DA ...Repeated for User-Programmable LED 46
42DC ...Repeated for User-Programmable LED 47
42DE ...Repeated for User-Programmable LED 48
Installation (Read/Write Setting)
43E0 Relay Programmed State 0 to 1 --- 1 F133 0 (Not Programmed)
43E1 Relay Name --- --- --- F202 “Relay-1”
User Programmable Self Tests (Read/Write Setting)
4441 User Programmable Detect Ring Break Function 0 to 1 --- 1 F102 1 (Enabled)
4442 User Programmable Direct Device Off Function 0 to 1 --- 1 F102 1 (Enabled)
4443 User Programmable Remote Device Off Function 0 to 1 --- 1 F102 1 (Enabled)
4444 User Programmable Primary Ethernet Fail Function 0 to 1 --- 1 F102 0 (Disabled)
4445 User Programmable Secondary Ethernet Fail Function 0 to 1 --- 1 F102 0 (Disabled)

GE Multilin B30 Bus Differential Relay B-17

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 11 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
4446 User Programmable Battery Fail Function 0 to 1 --- 1 F102 1 (Enabled)
4447 User Programmable SNTP Fail Function 0 to 1 --- 1 F102 1 (Enabled)
4448 User Programmable IRIG-B Fail Function 0 to 1 --- 1 F102 1 (Enabled)
CT Settings (Read/Write Setting) (6 modules)
4480 Phase CT 1 Primary 1 to 65000 A 1 F001 1

B 4481
4482
Phase CT 1 Secondary
Ground CT 1 Primary
0 to 1
1 to 65000
---
A
1
1
F123
F001
0 (1 A)
1
4483 Ground CT 1 Secondary 0 to 1 --- 1 F123 0 (1 A)
4484 ...Repeated for CT Bank 2
4488 ...Repeated for CT Bank 3
448C ...Repeated for CT Bank 4
4490 ...Repeated for CT Bank 5
4494 ...Repeated for CT Bank 6
VT Settings (Read/Write Setting) (3 modules)
4500 Phase VT 1 Connection 0 to 1 --- 1 F100 0 (Wye)
4501 Phase VT 1 Secondary 50 to 240 V 0.1 F001 664
4502 Phase VT 1 Ratio 1 to 24000 :1 1 F060 1
4504 Auxiliary VT 1 Connection 0 to 6 --- 1 F166 1 (Vag)
4505 Auxiliary VT 1 Secondary 50 to 240 V 0.1 F001 664
4506 Auxiliary VT 1 Ratio 1 to 24000 :1 1 F060 1
4508 ...Repeated for VT Bank 2
4510 ...Repeated for VT Bank 3
Source Settings (Read/Write Setting) (6 modules)
4580 Source 1 Name --- --- --- F206 “SRC 1"
4583 Source 1 Phase CT 0 to 63 --- 1 F400 0
4584 Source 1 Ground CT 0 to 63 --- 1 F400 0
4585 Source 1 Phase VT 0 to 63 --- 1 F400 0
4586 Source 1 Auxiliary VT 0 to 63 --- 1 F400 0
4587 ...Repeated for Source 2
458E ...Repeated for Source 3
4595 ...Repeated for Source 4
459C ...Repeated for Source 5
45A3 ...Repeated for Source 6
Power System (Read/Write Setting)
4600 Nominal Frequency 25 to 60 Hz 1 F001 60
4601 Phase Rotation 0 to 1 --- 1 F106 0 (ABC)
4602 Frequency And Phase Reference 0 to 5 --- 1 F167 0 (SRC 1)
4603 Frequency Tracking Function 0 to 1 --- 1 F102 1 (Enabled)
Flexcurves A and B (Read/Write Settings)
4800 FlexCurve A (120 items) 0 to 65535 ms 1 F011 0
48F0 FlexCurve B (120 items) 0 to 65535 ms 1 F011 0
Modbus User Map (Read/Write Setting)
4A00 Modbus Address Settings for User Map (256 items) 0 to 65535 --- 1 F001 0
User Displays Settings (Read/Write Setting) (16 modules)
4C00 User-Definable Display 1 Top Line Text --- --- --- F202 ““
4C0A User-Definable Display 1 Bottom Line Text --- --- --- F202 ““
4C14 Modbus Addresses of Display 1 Items (5 items) 0 to 65535 --- 1 F001 0
4C19 Reserved (7 items) --- --- --- F001 0
4C20 ...Repeated for User-Definable Display 2
4C40 ...Repeated for User-Definable Display 3
4C60 ...Repeated for User-Definable Display 4
4C80 ...Repeated for User-Definable Display 5
4CA0 ...Repeated for User-Definable Display 6
4CC0 ...Repeated for User-Definable Display 7

B-18 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 12 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
4CE0 ...Repeated for User-Definable Display 8
4D00 ...Repeated for User-Definable Display 9
4D20 ...Repeated for User-Definable Display 10
4D40 ...Repeated for User-Definable Display 11
4D60 ...Repeated for User-Definable Display 12
4D80 ...Repeated for User-Definable Display 13 B
4DA0 ...Repeated for User-Definable Display 14
4DC0 ...Repeated for User-Definable Display 15
4DE0 ...Repeated for User-Definable Display 16
User Programmable Pushbuttons (Read/Write Setting) (12 modules)
4E00 User Programmable Pushbutton 1 Function 0 to 2 --- 1 F109 2 (Disabled)
4E01 User Programmable Pushbutton 1 Top Line --- --- --- F202 (none)
4E0B User Programmable Pushbutton 1 On Text --- --- --- F202 (none)
4E15 User Programmable Pushbutton 1 Off Text --- --- --- F202 (none)
4E1F User Programmable Pushbutton 1 Drop-Out Time 0 to 60 s 0.05 F001 0
4E20 User Programmable Pushbutton 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
4E21 User Programmable Pushbutton 1 Events 0 to 1 --- 1 F102 0 (Disabled)
4E22 User Programmable Pushbutton 1 Reserved (2 items) 0 to 65535 --- 1 F001 0
4E24 ...Repeated for User Programmable Pushbutton 2
4E48 ...Repeated for User Programmable Pushbutton 3
4E6C ...Repeated for User Programmable Pushbutton 4
4E90 ...Repeated for User Programmable Pushbutton 5
4EB4 ...Repeated for User Programmable Pushbutton 6
4ED8 ...Repeated for User Programmable Pushbutton 7
4EFC ...Repeated for User Programmable Pushbutton 8
4F20 ...Repeated for User Programmable Pushbutton 9
4F44 ...Repeated for User Programmable Pushbutton 10
4F68 ...Repeated for User Programmable Pushbutton 11
4F8C ...Repeated for User Programmable Pushbutton 12
Flexlogic (Read/Write Setting)
5000 FlexLogic™ Entry (512 items) 0 to 65535 --- 1 F300 16384
Flexlogic Timers (Read/Write Setting) (32 modules)
5800 FlexLogic™ Timer 1 Type 0 to 2 --- 1 F129 0 (millisecond)
5801 FlexLogic™ Timer 1 Pickup Delay 0 to 60000 --- 1 F001 0
5802 FlexLogic™ Timer 1 Dropout Delay 0 to 60000 --- 1 F001 0
5803 Reserved (5 items) 0 to 65535 --- 1 F001 0
5808 ...Repeated for FlexLogic™ Timer 2
5810 ...Repeated for FlexLogic™ Timer 3
5818 ...Repeated for FlexLogic™ Timer 4
5820 ...Repeated for FlexLogic™ Timer 5
5828 ...Repeated for FlexLogic™ Timer 6
5830 ...Repeated for FlexLogic™ Timer 7
5838 ...Repeated for FlexLogic™ Timer 8
5840 ...Repeated for FlexLogic™ Timer 9
5848 ...Repeated for FlexLogic™ Timer 10
5850 ...Repeated for FlexLogic™ Timer 11
5858 ...Repeated for FlexLogic™ Timer 12
5860 ...Repeated for FlexLogic™ Timer 13
5868 ...Repeated for FlexLogic™ Timer 14
5870 ...Repeated for FlexLogic™ Timer 15
5878 ...Repeated for FlexLogic™ Timer 16
5880 ...Repeated for FlexLogic™ Timer 17
5888 ...Repeated for FlexLogic™ Timer 18
5890 ...Repeated for FlexLogic™ Timer 19

GE Multilin B30 Bus Differential Relay B-19

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 13 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
5898 ...Repeated for FlexLogic™ Timer 20
58A0 ...Repeated for FlexLogic™ Timer 21
58A8 ...Repeated for FlexLogic™ Timer 22
58B0 ...Repeated for FlexLogic™ Timer 23
58B8 ...Repeated for FlexLogic™ Timer 24

B 58C0
58C8
...Repeated for FlexLogic™ Timer 25
...Repeated for FlexLogic™ Timer 26
58D0 ...Repeated for FlexLogic™ Timer 27
58D8 ...Repeated for FlexLogic™ Timer 28
58E0 ...Repeated for FlexLogic™ Timer 29
58E8 ...Repeated for FlexLogic™ Timer 30
58F0 ...Repeated for FlexLogic™ Timer 31
58F8 ...Repeated for FlexLogic™ Timer 32
Phase Time Overcurrent (Read/Write Grouped Setting) (6 modules)
5900 Phase Time Overcurrent 1 Function 0 to 1 --- 1 F102 0 (Disabled)
5901 Phase Time Overcurrent 1 Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
5902 Phase Time Overcurrent 1 Input 0 to 1 --- 1 F122 0 (Phasor)
5903 Phase Time Overcurrent 1 Pickup 0 to 30 pu 0.001 F001 1000
5904 Phase Time Overcurrent 1 Curve 0 to 16 --- 1 F103 0 (IEEE Mod Inv)
5905 Phase Time Overcurrent 1 Multiplier 0 to 600 --- 0.01 F001 100
5906 Phase Time Overcurrent 1 Reset 0 to 1 --- 1 F104 0 (Instantaneous)
5907 Phase Time Overcurrent 1 Voltage Restraint 0 to 1 --- 1 F102 0 (Disabled)
5908 Phase TOC 1 Block For Each Phase (3 items) 0 to 65535 --- 1 F300 0
590B Phase Time Overcurrent 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
590C Phase Time Overcurrent 1 Events 0 to 1 --- 1 F102 0 (Disabled)
590D Reserved (3 items) 0 to 1 --- 1 F001 0
5910 ...Repeated for Phase Time Overcurrent 2
5920 ...Repeated for Phase Time Overcurrent 3
5930 ...Repeated for Phase Time Overcurrent 4
5940 ...Repeated for Phase Time Overcurrent 5
5950 ...Repeated for Phase Time Overcurrent 6
Phase Instantaneous Overcurrent (Read/Write Grouped Setting) (12 modules)
5A00 Phase Instantaneous Overcurrent 1 Function 0 to 1 --- 1 F102 0 (Disabled)
5A01 Phase Instantaneous Overcurrent 1 Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
5A02 Phase Instantaneous Overcurrent 1 Pickup 0 to 30 pu 0.001 F001 1000
5A03 Phase Instantaneous Overcurrent 1 Delay 0 to 600 s 0.01 F001 0
5A04 Phase Instantaneous Overcurrent 1 Reset Delay 0 to 600 s 0.01 F001 0
5A05 Phase IOC1 Block For Each Phase (3 items) 0 to 65535 --- 1 F300 0
5A08 Phase Instantaneous Overcurrent 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
5A09 Phase Instantaneous Overcurrent 1 Events 0 to 1 --- 1 F102 0 (Disabled)
5A0A Reserved (6 items) 0 to 1 --- 1 F001 0
5A10 ...Repeated for Phase Instantaneous Overcurrent 2
5A20 ...Repeated for Phase Instantaneous Overcurrent 3
5A30 ...Repeated for Phase Instantaneous Overcurrent 4
5A40 ...Repeated for Phase Instantaneous Overcurrent 5
5A50 ...Repeated for Phase Instantaneous Overcurrent 6
5A60 ...Repeated for Phase Instantaneous Overcurrent 7
5A70 ...Repeated for Phase Instantaneous Overcurrent 8
5A80 ...Repeated for Phase Instantaneous Overcurrent 9
5A90 ...Repeated for Phase Instantaneous Overcurrent 10
5AA0 ...Repeated for Phase Instantaneous Overcurrent 11
5AB0 ...Repeated for Phase Instantaneous Overcurrent 12
Neutral Time Overcurrent (Read/Write Grouped Setting) (6 modules)
5B00 Neutral Time Overcurrent 1 Function 0 to 1 --- 1 F102 0 (Disabled)

B-20 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 14 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
5B01 Neutral Time Overcurrent 1 Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
5B02 Neutral Time Overcurrent 1 Input 0 to 1 --- 1 F122 0 (Phasor)
5B03 Neutral Time Overcurrent 1 Pickup 0 to 30 pu 0.001 F001 1000
5B04 Neutral Time Overcurrent 1 Curve 0 to 16 --- 1 F103 0 (IEEE Mod Inv)
5B05 Neutral Time Overcurrent 1 Multiplier 0 to 600 --- 0.01 F001 100
5B06 Neutral Time Overcurrent 1 Reset 0 to 1 --- 1 F104 0 (Instantaneous) B
5B07 Neutral Time Overcurrent 1 Block 0 to 65535 --- 1 F300 0
5B08 Neutral Time Overcurrent 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
5B09 Neutral Time Overcurrent 1 Events 0 to 1 --- 1 F102 0 (Disabled)
5B0A Reserved (6 items) 0 to 1 --- 1 F001 0
5B10 ...Repeated for Neutral Time Overcurrent 2
5B20 ...Repeated for Neutral Time Overcurrent 3
5B30 ...Repeated for Neutral Time Overcurrent 4
5B40 ...Repeated for Neutral Time Overcurrent 5
5B50 ...Repeated for Neutral Time Overcurrent 6
Neutral Instantaneous Overcurrent (Read/Write Grouped Setting) (12 modules)
5C00 Neutral Instantaneous Overcurrent 1 Function 0 to 1 --- 1 F102 0 (Disabled)
5C01 Neutral Instantaneous Overcurrent 1 Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
5C02 Neutral Instantaneous Overcurrent 1 Pickup 0 to 30 pu 0.001 F001 1000
5C03 Neutral Instantaneous Overcurrent 1 Delay 0 to 600 s 0.01 F001 0
5C04 Neutral Instantaneous Overcurrent 1 Reset Delay 0 to 600 s 0.01 F001 0
5C05 Neutral Instantaneous Overcurrent 1 Block 0 to 65535 --- 1 F300 0
5C06 Neutral Instantaneous Overcurrent 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
5C07 Neutral Instantaneous Overcurrent 1 Events 0 to 1 --- 1 F102 0 (Disabled)
5C08 Reserved (8 items) 0 to 1 --- 1 F001 0
5C10 ...Repeated for Neutral Instantaneous Overcurrent 2
5C20 ...Repeated for Neutral Instantaneous Overcurrent 3
5C30 ...Repeated for Neutral Instantaneous Overcurrent 4
5C40 ...Repeated for Neutral Instantaneous Overcurrent 5
5C50 ...Repeated for Neutral Instantaneous Overcurrent 6
5C60 ...Repeated for Neutral Instantaneous Overcurrent 7
5C70 ...Repeated for Neutral Instantaneous Overcurrent 8
5C80 ...Repeated for Neutral Instantaneous Overcurrent 9
5C90 ...Repeated for Neutral Instantaneous Overcurrent 10
5CA0 ...Repeated for Neutral Instantaneous Overcurrent 11
5CB0 ...Repeated for Neutral Instantaneous Overcurrent 12
Ground Time Overcurrent (Read/Write Grouped Setting) (6 modules)
5D00 Ground Time Overcurrent 1 Function 0 to 1 --- 1 F102 0 (Disabled)
5D01 Ground Time Overcurrent 1 Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
5D02 Ground Time Overcurrent 1 Input 0 to 1 --- 1 F122 0 (Phasor)
5D03 Ground Time Overcurrent 1 Pickup 0 to 30 pu 0.001 F001 1000
5D04 Ground Time Overcurrent 1 Curve 0 to 16 --- 1 F103 0 (IEEE Mod Inv)
5D05 Ground Time Overcurrent 1 Multiplier 0 to 600 --- 0.01 F001 100
5D06 Ground Time Overcurrent 1 Reset 0 to 1 --- 1 F104 0 (Instantaneous)
5D07 Ground Time Overcurrent 1 Block 0 to 65535 --- 1 F300 0
5D08 Ground Time Overcurrent 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
5D09 Ground Time Overcurrent 1 Events 0 to 1 --- 1 F102 0 (Disabled)
5D0A Reserved (6 items) 0 to 1 --- 1 F001 0
5D10 ...Repeated for Ground Time Overcurrent 2
5D20 ...Repeated for Ground Time Overcurrent 3
5D30 ...Repeated for Ground Time Overcurrent 4
5D40 ...Repeated for Ground Time Overcurrent 5
5D50 ...Repeated for Ground Time Overcurrent 6

GE Multilin B30 Bus Differential Relay B-21

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 15 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
Ground Instantaneous Overcurrent (Read/Write Grouped Setting) (12 modules)
5E00 Ground Instantaneous Overcurrent 1 Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
5E01 Ground Instantaneous Overcurrent 1 Function 0 to 1 --- 1 F102 0 (Disabled)
5E02 Ground Instantaneous Overcurrent 1 Pickup 0 to 30 pu 0.001 F001 1000
5E03 Ground Instantaneous Overcurrent 1 Delay 0 to 600 s 0.01 F001 0

B 5E04
5E05
Ground Instantaneous Overcurrent 1 Reset Delay
Ground Instantaneous Overcurrent 1 Block
0 to 600
0 to 65535
s
---
0.01
1
F001
F300
0
0
5E06 Ground Instantaneous Overcurrent 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
5E07 Ground Instantaneous Overcurrent 1 Events 0 to 1 --- 1 F102 0 (Disabled)
5E08 Reserved (8 items) 0 to 1 --- 1 F001 0
5E10 ...Repeated for Ground Instantaneous Overcurrent 2
5E20 ...Repeated for Ground Instantaneous Overcurrent 3
5E30 ...Repeated for Ground Instantaneous Overcurrent 4
5E40 ...Repeated for Ground Instantaneous Overcurrent 5
5E50 ...Repeated for Ground Instantaneous Overcurrent 6
5E60 ...Repeated for Ground Instantaneous Overcurrent 7
5E70 ...Repeated for Ground Instantaneous Overcurrent 8
5E80 ...Repeated for Ground Instantaneous Overcurrent 9
5E90 ...Repeated for Ground Instantaneous Overcurrent 10
5EA0 ...Repeated for Ground Instantaneous Overcurrent 11
5EB0 ...Repeated for Ground Instantaneous Overcurrent 12
Setting Groups (Read/Write Setting)
5F80 Setting Group for Modbus Comms (0 means group 1) 0 to 5 --- 1 F001 0
5F81 Setting Groups Block 0 to 65535 --- 1 F300 0
5F82 FlexLogic to Activate Groups 2 through 6 (5 items) 0 to 65535 --- 1 F300 0
5F89 Setting Group Function 0 to 1 --- 1 F102 0 (Disabled)
5F8A Setting Group Events 0 to 1 --- 1 F102 0 (Disabled)
Setting Groups (Read Only)
5F8B Current Setting Group 0 to 5 --- 1 F001 0
Setting Group Names (Read/Write Setting)
5F8C Setting Group 1 Name --- --- --- F203 (none)
5494 Setting Group 2 Name --- --- --- F203 (none)
5F9C Setting Group 3 Name --- --- --- F203 (none)
5FA4 Setting Group 4 Name --- --- --- F203 (none)
5FAC Setting Group 5 Name --- --- --- F203 (none)
5FB4 Setting Group 6 Name --- --- --- F203 (none)
Bus Configuration (Read/Write Setting)
6500 Bus Zone xA Source (6 items) 0 to 5 --- 1 F167 0 (SRC 1)
6506 Bus Zone xA Status (6 items) 0 to 65535 --- 1 F300 0
Bus Differential (Read/Write Grouped Setting) (4 modules)
6520 Bus Zone 1 Function 0 to 1 --- 1 F102 0 (Disabled)
6521 Bus Zone 1 Pickup 0.05 to 2 pu 0.001 F001 100
6522 Bus Zone 1 Low Slope 15 to 100 % 1 F001 25
6523 Bus Zone 1 Low Breakpoint 1 to 30 pu 0.01 F001 200
6524 Bus Zone 1 High Slope 50 to 100 % 1 F001 60
6525 Bus Zone 1 High Breakpoint 1 to 30 pu 0.01 F001 800
6526 Bus Zone 1 High Set 0.1 to 99.99 pu 0.01 F001 1500
6527 Bus Zone 1 Seal In 0 to 65.535 s 0.001 F001 400
6528 Bus Zone 1 Block 0 to 65535 --- 1 F300 0
6529 Bus Zone 1 Events 0 to 1 --- 1 F102 0 (Disabled)
652A Bus Zone 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
6531 ...Repeated for Bus Zone 2
6542 ...Repeated for Bus Zone 3
6553 ...Repeated for Bus Zone 4

B-22 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 16 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
CT Trouble (Read/Write Setting) (4 modules)
65A0 CT Trouble 1 Function 0 to 1 --- 1 F102 0 (Disabled)
65A1 CT Trouble 1 Pickup 0.02 to 2 pu 0.001 F001 100
65A2 CT Trouble 1 Delay 1 to 60 s 0.1 F001 100
65A3 CT Trouble 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
65A4 CT Trouble 1 Events 0 to 1 --- 1 F102 0 (Disabled) B
65A5 ...Repeated for CT Trouble 2
65AA ...Repeated for CT Trouble 3
65AF ...Repeated for CT Trouble 4
Phase Undervoltage (Read/Write Grouped Setting) (2 modules)
7000 Phase Undervoltage 1 Function 0 to 1 --- 1 F102 0 (Disabled)
7001 Phase Undervoltage 1 Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
7002 Phase Undervoltage 1 Pickup 0 to 3 pu 0.001 F001 1000
7003 Phase Undervoltage 1 Curve 0 to 1 --- 1 F111 0 (Definite Time)
7004 Phase Undervoltage 1 Delay 0 to 600 s 0.01 F001 100
7005 Phase Undervoltage 1 Minimum Voltage 0 to 3 pu 0.001 F001 100
7006 Phase Undervoltage 1 Block 0 to 65535 --- 1 F300 0
7007 Phase Undervoltage 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
7008 Phase Undervoltage 1 Events 0 to 1 --- 1 F102 0 (Disabled)
7009 Phase Undervoltage 1 Measurement Mode 0 to 1 --- 1 F186 0 (Phase to Ground)
700A Reserved (6 items) 0 to 1 --- 1 F001 0
7013 ...Repeated for Phase Undervoltage 2
Breaker Failure (Read/Write Grouped Setting) (2 modules)
7200 Breaker Failure 1 Function 0 to 1 --- 1 F102 0 (Disabled)
7201 Breaker Failure 1 Mode 0 to 1 --- 1 F157 0 (3-Pole)
7208 Breaker Failure 1 Source 0 to 5 --- 1 F167 0 (SRC 1)
7209 Breaker Failure 1 Amp Supervision 0 to 1 --- 1 F126 1 (Yes)
720A Breaker Failure 1 Use Seal-In 0 to 1 --- 1 F126 1 (Yes)
720B Breaker Failure 1 Three Pole Initiate 0 to 65535 --- 1 F300 0
720C Breaker Failure 1 Block 0 to 65535 --- 1 F300 0
720D Breaker Failure 1 Phase Amp Supv Pickup 0.001 to 30 pu 0.001 F001 1050
720E Breaker Failure 1 Neutral Amp Supv Pickup 0.001 to 30 pu 0.001 F001 1050
720F Breaker Failure 1 Use Timer 1 0 to 1 --- 1 F126 1 (Yes)
7210 Breaker Failure 1 Timer 1 Pickup 0 to 65.535 s 0.001 F001 0
7211 Breaker Failure 1 Use Timer 2 0 to 1 --- 1 F126 1 (Yes)
7212 Breaker Failure 1 Timer 2 Pickup 0 to 65.535 s 0.001 F001 0
7213 Breaker Failure 1 Use Timer 3 0 to 1 --- 1 F126 1 (Yes)
7214 Breaker Failure 1 Timer 3 Pickup 0 to 65.535 s 0.001 F001 0
7215 Breaker Failure 1 Breaker Status 1 Phase A/3P 0 to 65535 --- 1 F300 0
7216 Breaker Failure 1 Breaker Status 2 Phase A/3P 0 to 65535 --- 1 F300 0
7217 Breaker Failure 1 Breaker Test On 0 to 65535 --- 1 F300 0
7218 Breaker Failure 1 Phase Amp Hiset Pickup 0.001 to 30 pu 0.001 F001 1050
7219 Breaker Failure 1 Neutral Amp Hiset Pickup 0.001 to 30 pu 0.001 F001 1050
721A Breaker Failure 1 Phase Amp Loset Pickup 0.001 to 30 pu 0.001 F001 1050
721B Breaker Failure 1 Neutral Amp Loset Pickup 0.001 to 30 pu 0.001 F001 1050
721C Breaker Failure 1 Loset Time 0 to 65.535 s 0.001 F001 0
721D Breaker Failure 1 Trip Dropout Delay 0 to 65.535 s 0.001 F001 0
721E Breaker Failure 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
721F Breaker Failure 1 Events 0 to 1 --- 1 F102 0 (Disabled)
7220 Breaker Failure 1 Phase A Initiate 0 to 65535 --- 1 F300 0
7221 Breaker Failure 1 Phase B Initiate 0 to 65535 --- 1 F300 0
7222 Breaker Failure 1 Phase C Initiate 0 to 65535 --- 1 F300 0
7223 Breaker Failure 1 Breaker Status 1 Phase B 0 to 65535 --- 1 F300 0
7224 Breaker Failure 1 Breaker Status 1 Phase C 0 to 65535 --- 1 F300 0

GE Multilin B30 Bus Differential Relay B-23

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 17 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
7225 Breaker Failure 1 Breaker Status 2 Phase B 0 to 65535 --- 1 F300 0
7226 Breaker Failure 1 Breaker Status 2 Phase C 0 to 65535 --- 1 F300 0
7227 ...Repeated for Breaker Failure 2
DCMA Inputs (Read/Write Setting) (24 modules)
7300 dcmA Inputs 1 Function 0 to 1 --- 1 F102 0 (Disabled)

B 7301
7307
dcmA Inputs 1 ID
Reserved 1 (4 items)
---
0 to 65535
---
---
---
1
F205
F001
“DCMA I 1"
0
730B dcmA Inputs 1 Units --- --- --- F206 “mA”
730E dcmA Inputs 1 Range 0 to 6 --- 1 F173 6 (4 to 20 mA)
730F dcmA Inputs 1 Minimum Value -9999.999 to 9999.999 --- 0.001 F004 4000
7311 dcmA Inputs 1 Maximum Value -9999.999 to 9999.999 --- 0.001 F004 20000
7313 Reserved (5 items) 0 to 65535 --- 1 F001 0
7318 ...Repeated for dcmA Inputs 2
7330 ...Repeated for dcmA Inputs 3
7348 ...Repeated for dcmA Inputs 4
7360 ...Repeated for dcmA Inputs 5
7378 ...Repeated for dcmA Inputs 6
7390 ...Repeated for dcmA Inputs 7
73A8 ...Repeated for dcmA Inputs 8
73C0 ...Repeated for dcmA Inputs 9
73D8 ...Repeated for dcmA Inputs 10
73F0 ...Repeated for dcmA Inputs 11
7408 ...Repeated for dcmA Inputs 12
7420 ...Repeated for dcmA Inputs 13
7438 ...Repeated for dcmA Inputs 14
7450 ...Repeated for dcmA Inputs 15
7468 ...Repeated for dcmA Inputs 16
7480 ...Repeated for dcmA Inputs 17
7498 ...Repeated for dcmA Inputs 18
74B0 ...Repeated for dcmA Inputs 19
74C8 ...Repeated for dcmA Inputs 20
74E0 ...Repeated for dcmA Inputs 21
74F8 ...Repeated for dcmA Inputs 22
7510 ...Repeated for dcmA Inputs 23
7528 ...Repeated for dcmA Inputs 24
RTD Inputs (Read/Write Setting) (48 modules)
7540 RTD Input 1 Function 0 to 1 --- 1 F102 0 (Disabled)
7541 RTD Input 1 ID --- --- --- F205 “RTD Ip 1“
7547 Reserved (4 items) 0 to 65535 --- 1 F001 0
754B RTD Input 1 Type 0 to 3 --- 1 F174 0 (100 Ohm Platinum)
754C Reserved (4 items) 0 to 65535 --- 1 F001 0
7550 ...Repeated for RTD Input 2
7560 ...Repeated for RTD Input 3
7570 ...Repeated for RTD Input 4
7580 ...Repeated for RTD Input 5
7590 ...Repeated for RTD Input 6
75A0 ...Repeated for RTD Input 7
75B0 ...Repeated for RTD Input 8
75C0 ...Repeated for RTD Input 9
75D0 ...Repeated for RTD Input 10
75E0 ...Repeated for RTD Input 11
75F0 ...Repeated for RTD Input 12
7600 ...Repeated for RTD Input 13
7610 ...Repeated for RTD Input 14

B-24 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 18 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
7620 ...Repeated for RTD Input 15
7630 ...Repeated for RTD Input 16
7640 ...Repeated for RTD Input 17
7650 ...Repeated for RTD Input 18
7660 ...Repeated for RTD Input 19
7670 ...Repeated for RTD Input 20 B
7680 ...Repeated for RTD Input 21
7690 ...Repeated for RTD Input 22
76A0 ...Repeated for RTD Input 23
76B0 ...Repeated for RTD Input 24
76C0 ...Repeated for RTD Input 25
76D0 ...Repeated for RTD Input 26
76E0 ...Repeated for RTD Input 27
76F0 ...Repeated for RTD Input 28
7700 ...Repeated for RTD Input 29
7710 ...Repeated for RTD Input 30
7720 ...Repeated for RTD Input 31
7730 ...Repeated for RTD Input 32
7740 ...Repeated for RTD Input 33
7750 ...Repeated for RTD Input 34
7760 ...Repeated for RTD Input 35
7770 ...Repeated for RTD Input 36
7780 ...Repeated for RTD Input 37
7790 ...Repeated for RTD Input 38
77A0 ...Repeated for RTD Input 39
77B0 ...Repeated for RTD Input 40
77C0 ...Repeated for RTD Input 41
77D0 ...Repeated for RTD Input 42
77E0 ...Repeated for RTD Input 43
77F0 ...Repeated for RTD Input 44
7800 ...Repeated for RTD Input 45
7810 ...Repeated for RTD Input 46
7820 ...Repeated for RTD Input 47
7830 ...Repeated for RTD Input 48
Neutral Overvoltage (Read/Write Grouped Setting) (3 modules)
7F00 Neutral Overvoltage 1 Function 0 to 1 --- 1 F102 0 (Disabled)
7F01 Neutral Overvoltage 1 Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
7F02 Neutral Overvoltage 1 Pickup 0 to 3.00 pu 0.001 F001 300
7F03 Neutral Overvoltage 1 Pickup Delay 0 to 600 s 0.01 F001 100
7F04 Neutral Overvoltage 1 Reset Delay 0 to 600 s 0.01 F001 100
7F05 Neutral Overvoltage 1 Block 0 to 65535 --- 1 F300 0
7F06 Neutral Overvoltage 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
7F07 Neutral Overvoltage 1 Events 0 to 1 --- 1 F102 0 (Disabled)
7F08 Neutral Overvoltage 1 Curves 0 to 3 --- 1 F116 0 (Definite Time)
7F09 Reserved (8 items) 0 to 65535 --- 1 F001 0
7F10 ...Repeated for Neutral Overvoltage 2
7F20 ...Repeated for Neutral Overvoltage 3
Auxiliary Overvoltage (Read/Write Grouped Setting) (3 modules)
7F30 Auxiliary Overvoltage 1 Function 0 to 1 --- 1 F102 0 (Disabled)
7F31 Auxiliary Overvoltage 1 Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
7F32 Auxiliary Overvoltage 1 Pickup 0 to 3 pu 0.001 F001 300
7F33 Auxiliary Overvoltage 1 Pickup Delay 0 to 600 s 0.01 F001 100
7F34 Auxiliary Overvoltage 1 Reset Delay 0 to 600 s 0.01 F001 100
7F35 Auxiliary Overvoltage 1 Block 0 to 65535 --- 1 F300 0

GE Multilin B30 Bus Differential Relay B-25

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 19 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
7F36 Auxiliary Overvoltage 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
7F37 Auxiliary Overvoltage 1 Events 0 to 1 --- 1 F102 0 (Disabled)
7F38 Reserved (8 items) 0 to 65535 --- 1 F001 0
7F40 ...Repeated for Auxiliary Overvoltage 2
7F50 ...Repeated for Auxiliary Overvoltage 3

B Frequency (Read Only)

8000 Tracking Frequency 2 to 90 Hz 0.01 F001 0
EGD Fast Production Status (Read Only)
83E0 EGD Fast Producer Exchange 1 Signature 0 to 65535 --- 1 F001 0
83E1 EGD Fast Producer Exchange 1 Configuration Time 0 to 4294967295 --- --- F003 0
83E3 EGD Fast Producer Exchange 1 Size 0 to 65535 --- 1 F001 0
EGD Slow Production Status (Read Only) (2 modules)
83F0 EGD Slow Producer Exchange 1 Signature 0 to 65535 --- 1 F001 0
83F1 EGD Slow Producer Exchange 1 Configuration Time 0 to 4294967295 --- --- F003 0
83F3 EGD Slow Producer Exchange 1 Size 0 to 65535 --- 1 F001 0
83F4 ...Repeated for module number 2
EGD Fast Production (Read/Write Setting)
8400 EGD Fast Producer Exchange 1 Function 0 to 1 --- 1 F102 0 (Disabled)
8401 EGD Fast Producer Exchange 1 Destination 0 to 4294967295 --- 1 F003 0
8403 EGD Fast Producer Exchange 1 Data Rate 50 to 1000 ms 50 F001 1000
8404 EGD Fast Producer Exchange 1 Data Item 1 (20 items) 0 to 65535 --- 1 F001 0
8418 Reserved (80 items) --- --- --- F001 0
EGD Slow Production (Read/Write Setting) (2 modules)
8500 EGD Slow Producer Exchange 1 Function 0 to 1 --- 1 F102 0 (Disabled)
8501 EGD Fast Producer Exchange 1 Destination 0 to 4294967295 --- 1 F003 0
8503 EGD Slow Producer Exchange 1 Data Rate 500 to 1000 ms 50 F001 1000
8504 EGD Slow Producer Exchange 1 Data Item 1 (50 items) 0 to 65535 --- 1 F001 0
8536 Reserved (50 items) --- --- --- F001 0
8568 ...Repeated for EGD Exchange 2
FlexState Settings (Read/Write Setting)
8800 FlexState Parameters (256 items) --- --- --- F300 0
Digital Elements (Read/Write Setting) (48 modules)
8A00 Digital Element 1 Function 0 to 1 --- 1 F102 0 (Disabled)
8A01 Digital Element 1 Name --- --- --- F203 “Dig Element 1“
8A09 Digital Element 1 Input 0 to 65535 --- 1 F300 0
8A0A Digital Element 1 Pickup Delay 0 to 999999.999 s 0.001 F003 0
8A0C Digital Element 1 Reset Delay 0 to 999999.999 s 0.001 F003 0
8A0E Digital Element 1 Block 0 to 65535 --- 1 F300 0
8A0F Digital Element 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
8A10 Digital Element 1 Events 0 to 1 --- 1 F102 0 (Disabled)
8A11 Digital Element 1 Pickup LED 0 to 1 --- 1 F102 1 (Enabled)
8A12 Reserved (2 items) --- --- --- F001 0
8A14 ...Repeated for Digital Element 2
8A28 ...Repeated for Digital Element 3
8A3C ...Repeated for Digital Element 4
8A50 ...Repeated for Digital Element 5
8A64 ...Repeated for Digital Element 6
8A78 ...Repeated for Digital Element 7
8A8C ...Repeated for Digital Element 8
8AA0 ...Repeated for Digital Element 9
8AB4 ...Repeated for Digital Element 10
8AC8 ...Repeated for Digital Element 11
8ADC ...Repeated for Digital Element 12
8AF0 ...Repeated for Digital Element 13

B-26 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 20 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
8B04 ...Repeated for Digital Element 14
8B18 ...Repeated for Digital Element 15
8B2C ...Repeated for Digital Element 16
8B40 ...Repeated for Digital Element 17
8B54 ...Repeated for Digital Element 18
8B68 ...Repeated for Digital Element 19 B
8B7C ...Repeated for Digital Element 20
8B90 ...Repeated for Digital Element 21
8BA4 ...Repeated for Digital Element 22
8BB8 ...Repeated for Digital Element 23
8BCC ...Repeated for Digital Element 24
8BE0 ...Repeated for Digital Element 25
8BF4 ...Repeated for Digital Element 26
8C08 ...Repeated for Digital Element 27
8C1C ...Repeated for Digital Element 28
8C30 ...Repeated for Digital Element 29
8C44 ...Repeated for Digital Element 30
8C58 ...Repeated for Digital Element 31
8C6C ...Repeated for Digital Element 32
8C80 ...Repeated for Digital Element 33
8C94 ...Repeated for Digital Element 34
8CA8 ...Repeated for Digital Element 35
8CBC ...Repeated for Digital Element 36
8CD0 ...Repeated for Digital Element 37
8CE4 ...Repeated for Digital Element 38
8CF8 ...Repeated for Digital Element 39
8D0C ...Repeated for Digital Element 40
8D20 ...Repeated for Digital Element 41
8D34 ...Repeated for Digital Element 42
8D48 ...Repeated for Digital Element 43
8D5C ...Repeated for Digital Element 44
8D70 ...Repeated for Digital Element 45
8D84 ...Repeated for Digital Element 46
8D98 ...Repeated for Digital Element 47
8DAC ...Repeated for Digital Element 48
FlexElement (Read/Write Setting) (16 modules)
9000 FlexElement™ 1 Function 0 to 1 --- 1 F102 0 (Disabled)
9001 FlexElement™ 1 Name --- --- --- F206 “FxE 1”
9004 FlexElement™ 1 InputP 0 to 65535 --- 1 F600 0
9005 FlexElement™ 1 InputM 0 to 65535 --- 1 F600 0
9006 FlexElement™ 1 Compare 0 to 1 --- 1 F516 0 (LEVEL)
9007 FlexElement™ 1 Input 0 to 1 --- 1 F515 0 (SIGNED)
9008 FlexElement™ 1 Direction 0 to 1 --- 1 F517 0 (OVER)
9009 FlexElement™ 1 Hysteresis 0.1 to 50 % 0.1 F001 30
900A FlexElement™ 1 Pickup -90 to 90 pu 0.001 F004 1000
900C FlexElement™ 1 DeltaT Units 0 to 2 --- 1 F518 0 (Milliseconds)
900D FlexElement™ 1 DeltaT 20 to 86400 --- 1 F003 20
900F FlexElement™ 1 Pickup Delay 0 to 65.535 s 0.001 F001 0
9010 FlexElement™ 1 Reset Delay 0 to 65.535 s 0.001 F001 0
9011 FlexElement™ 1 Block 0 to 65535 --- 1 F300 0
9012 FlexElement™ 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
9013 FlexElement™ 1 Events 0 to 1 --- 1 F102 0 (Disabled)
9014 ...Repeated for FlexElement™ 2
9028 ...Repeated for FlexElement™ 3

GE Multilin B30 Bus Differential Relay B-27

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 21 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
903C ...Repeated for FlexElement™ 4
9050 ...Repeated for FlexElement™ 5
9064 ...Repeated for FlexElement™ 6
9078 ...Repeated for FlexElement™ 7
908C ...Repeated for FlexElement™ 8

B 90A0
90B4
...Repeated for FlexElement™ 9
...Repeated for FlexElement™ 10
90C8 ...Repeated for FlexElement™ 11
90DC ...Repeated for FlexElement™ 12
90F0 ...Repeated for FlexElement™ 13
9104 ...Repeated for FlexElement™ 14
9118 ...Repeated for FlexElement™ 15
912C ...Repeated for FlexElement™ 16
DCMA Outputs (Read/Write Setting) (24 modules)
9300 dcmA Output 1 Source 0 to 65535 --- 1 F600 0
9301 dcmA Output 1 Range 0 to 2 --- 1 F522 0 (–1 to 1 mA)
9302 dcmA Output 1 Minimum –90 to 90 pu 0.001 F004 0
9304 dcmA Output 1 Maximum –90 to 90 pu 0.001 F004 1000
9306 ...Repeated for dcmA Output 2
930C ...Repeated for dcmA Output 3
9312 ...Repeated for dcmA Output 4
9318 ...Repeated for dcmA Output 5
931E ...Repeated for dcmA Output 6
9324 ...Repeated for dcmA Output 7
932A ...Repeated for dcmA Output 8
9330 ...Repeated for dcmA Output 9
9336 ...Repeated for dcmA Output 10
933C ...Repeated for dcmA Output 11
9342 ...Repeated for dcmA Output 12
9348 ...Repeated for dcmA Output 13
934E ...Repeated for dcmA Output 14
9354 ...Repeated for dcmA Output 15
935A ...Repeated for dcmA Output 16
9360 ...Repeated for dcmA Output 17
9366 ...Repeated for dcmA Output 18
936C ...Repeated for dcmA Output 19
9372 ...Repeated for dcmA Output 20
9378 ...Repeated for dcmA Output 21
937E ...Repeated for dcmA Output 22
9384 ...Repeated for dcmA Output 23
938A ...Repeated for dcmA Output 24
Direct Input/Output Names (Read/Write Setting) (96 modules)
9400 Direct Input 1 Name 0 to 96 --- 1 F205 “Dir Ip 1”
9406 Direct Output 1 Name 1 to 96 --- 1 F205 “Dir Out 1”
940C ...Repeated for Direct Input/Output 2
9418 ...Repeated for Direct Input/Output 3
9424 ...Repeated for Direct Input/Output 4
9430 ...Repeated for Direct Input/Output 5
943C ...Repeated for Direct Input/Output 6
9448 ...Repeated for Direct Input/Output 7
9454 ...Repeated for Direct Input/Output 8
9460 ...Repeated for Direct Input/Output 9
946C ...Repeated for Direct Input/Output 10
9478 ...Repeated for Direct Input/Output 11

B-28 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 22 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
9484 ...Repeated for Direct Input/Output 12
9490 ...Repeated for Direct Input/Output 13
949C ...Repeated for Direct Input/Output 14
94A8 ...Repeated for Direct Input/Output 15
94B4 ...Repeated for Direct Input/Output 16
94C0 ...Repeated for Direct Input/Output 17 B
94CC ...Repeated for Direct Input/Output 18
94D8 ...Repeated for Direct Input/Output 19
94E4 ...Repeated for Direct Input/Output 20
94F0 ...Repeated for Direct Input/Output 21
94FC ...Repeated for Direct Input/Output 22
9508 ...Repeated for Direct Input/Output 23
9514 ...Repeated for Direct Input/Output 24
9520 ...Repeated for Direct Input/Output 25
952C ...Repeated for Direct Input/Output 26
9538 ...Repeated for Direct Input/Output 27
9544 ...Repeated for Direct Input/Output 28
9550 ...Repeated for Direct Input/Output 29
955C ...Repeated for Direct Input/Output 30
9568 ...Repeated for Direct Input/Output 31
9574 ...Repeated for Direct Input/Output 32
FlexElement Actuals (Read Only) (16 modules)
9A01 FlexElement™ 1 Actual -2147483.647 to 2147483.647 --- 0.001 F004 0
9A03 FlexElement™ 2 Actual -2147483.647 to 2147483.647 --- 0.001 F004 0
9A05 FlexElement™ 3 Actual -2147483.647 to 2147483.647 --- 0.001 F004 0
9A07 FlexElement™ 4 Actual -2147483.647 to 2147483.647 --- 0.001 F004 0
9A09 FlexElement™ 5 Actual -2147483.647 to 2147483.647 --- 0.001 F004 0
9A0B FlexElement™ 6 Actual -2147483.647 to 2147483.647 --- 0.001 F004 0
9A0D FlexElement™ 7 Actual -2147483.647 to 2147483.647 --- 0.001 F004 0
9A0F FlexElement™ 8 Actual -2147483.647 to 2147483.647 --- 0.001 F004 0
Selector Switch Actuals (Read Only)
A400 Selector 1 Position 1 to 7 --- 1 F001 0
A401 Selector 2 Position 1 to 7 --- 1 F001 1
Selector Switch (Read/Write Setting) (2 modules)
A410 Selector 1 Function 0 to 1 --- 1 F102 0 (Disabled)
A411 Selector 1 Range 1 to 7 --- 1 F001 7
A412 Selector 1 Timeout 3 to 60 s 0.1 F001 50
A413 Selector 1 Step Up 0 to 65535 --- 1 F300 0
A414 Selector 1 Step Mode 0 to 1 --- 1 F083 0 (Time-out)
A415 Selector 1 Acknowledge 0 to 65535 --- 1 F300 0
A416 Selector 1 Bit0 0 to 65535 --- 1 F300 0
A417 Selector 1 Bit1 0 to 65535 --- 1 F300 0
A418 Selector 1 Bit2 0 to 65535 --- 1 F300 0
A419 Selector 1 Bit Mode 0 to 1 --- 1 F083 0 (Time-out)
A41A Selector 1 Bit Acknowledge 0 to 65535 --- 1 F300 0
A41B Selector 1 Power Up Mode 0 to 2 --- 1 F084 0 (Restore)
A41C Selector 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
A41D Selector 1 Events 0 to 1 --- 1 F102 0 (Disabled)
A41E Reserved (10 items) --- --- 1 F001 0
A428 ...Repeated for Selector 2
DNP/IEC Points (Read/Write Setting)
A500 DNP/IEC 60870-5-104 Binary Input Points (256 items) 0 to 65535 --- 1 F300 0
A600 DNP/IEC 60870-5-104 Analog Input Points (256 items) 0 to 65535 --- 1 F300 0

GE Multilin B30 Bus Differential Relay B-29

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 23 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
Flexcurves C and D (Read/Write Setting)
A900 FlexCurve C (120 items) 0 to 65535 ms 1 F011 0
A978 FlexCurve D (120 items) 0 to 65535 ms 1 F011 0
Non Volatile Latches (Read/Write Setting) (16 modules)
AA00 Non-Volatile Latch 1 Function 0 to 1 --- 1 F102 0 (Disabled)

B AA01
AA02
Non-Volatile Latch 1 Type
Non-Volatile Latch 1 Set
0 to 1
0 to 65535
---
---
1
1
F519
F300
0 (Reset Dominant)
0
AA03 Non-Volatile Latch 1 Reset 0 to 65535 --- 1 F300 0
AA04 Non-Volatile Latch 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
AA05 Non-Volatile Latch 1 Events 0 to 1 --- 1 F102 0 (Disabled)
AA06 Reserved (4 items) --- --- --- F001 0
AA0A ...Repeated for Non-Volatile Latch 2
AA14 ...Repeated for Non-Volatile Latch 3
AA1E ...Repeated for Non-Volatile Latch 4
AA28 ...Repeated for Non-Volatile Latch 5
AA32 ...Repeated for Non-Volatile Latch 6
AA3C ...Repeated for Non-Volatile Latch 7
AA46 ...Repeated for Non-Volatile Latch 8
AA50 ...Repeated for Non-Volatile Latch 9
AA5A ...Repeated for Non-Volatile Latch 10
AA64 ...Repeated for Non-Volatile Latch 11
AA6E ...Repeated for Non-Volatile Latch 12
AA78 ...Repeated for Non-Volatile Latch 13
AA82 ...Repeated for Non-Volatile Latch 14
AA8C ...Repeated for Non-Volatile Latch 15
AA96 ...Repeated for Non-Volatile Latch 16
Digital Counter (Read/Write Setting) (8 modules)
AB00 Digital Counter 1 Function 0 to 1 --- 1 F102 0 (Disabled)
AB01 Digital Counter 1 Name --- --- --- F205 “Counter 1"
AB07 Digital Counter 1 Units --- --- --- F206 (none)
AB0A Digital Counter 1 Block 0 to 65535 --- 1 F300 0
AB0B Digital Counter 1 Up 0 to 65535 --- 1 F300 0
AB0C Digital Counter 1 Down 0 to 65535 --- 1 F300 0
AB0D Digital Counter 1 Preset -2147483647 to 2147483647 --- 1 F004 0
AB0F Digital Counter 1 Compare -2147483647 to 2147483647 --- 1 F004 0
AB11 Digital Counter 1 Reset 0 to 65535 --- 1 F300 0
AB12 Digital Counter 1 Freeze/Reset 0 to 65535 --- 1 F300 0
AB13 Digital Counter 1 Freeze/Count 0 to 65535 --- 1 F300 0
AB14 Digital Counter 1 Set To Preset 0 to 65535 --- 1 F300 0
AB15 Reserved (11 items) --- --- --- F001 0
AB20 ...Repeated for Digital Counter 2
AB40 ...Repeated for Digital Counter 3
AB60 ...Repeated for Digital Counter 4
AB80 ...Repeated for Digital Counter 5
ABA0 ...Repeated for Digital Counter 6
ABC0 ...Repeated for Digital Counter 7
ABE0 ...Repeated for Digital Counter 8
IEC 61850 GSSE Configuration (Read/Write Setting)
AD80 Default GSSE Update Time 1 to 60 s 1 F001 60
AD81 Remote Input/Output Transfer Method 0 to 2 --- 1 F226 1 (GSSE)
AD82 IEC 61850 GOOSE VLAN Transmit Priority 0 to 7 --- 1 F001 4
AD83 IEC 61850 GOOSE VLAN ID 0 to 4095 --- 1 F001 0
AD84 IEC 61850 GOOSE ETYPE APPID 0 to 16383 --- 1 F001 0
AD85 Reserved (22 items) 0 to 1 --- 1 F001 0

B-30 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 24 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
IEC 61850 Server Configuration (Read/Write Settings/Commands)
ADA0 TCP Port Number for the IEC 61850 Protocol 1 to 65535 --- 1 F001 102
ADA1 IEC 61850 Logical Device Name --- --- --- F213 “IECDevice”
ADB1 Include Non-IEC 61850 Data 0 to 1 --- 1 F102 1 (Enabled)
ADB2 Number of Status Indications in GGIO1 8 to 128 --- 8 F001 8
ADB3 IEC 61850 Server Data Scanning Function 0 to 1 --- 1 F102 0 (Disabled) B
ADB4 Command to Clear XCBR1 OpCnt Counter 0 to 1 --- 1 F126 0 (No)
ADB5 Command to Clear XCBR2 OpCnt Counter 0 to 1 --- 1 F126 0 (No)
ADB6 Reserved (10 items) 0 to 1 --- 1 F001 0
IEC 61850 Logical Node Name Prefixes (Read/Write Setting)
AE00 IEC 61850 Logical Node PIOCx Name Prefix (72 items) 0 to 65534 --- 1 F206 (None)
AED8 IEC 61850 Logical Node PTOCx Name Prefix (24 items) 0 to 65534 --- 1 F206 (None)
AF20 IEC 61850 Logical Node PTUVx Name Prefix (12 items) 0 to 65534 --- 1 F206 (None)
AF44 IEC 61850 Logical Node PTOVx Name Prefix (8 items) 0 to 65534 --- 1 F206 (None)
AF5C IEC 61850 Logical Node PDISx Name Prefix (10 items) 0 to 65534 --- 1 F206 (None)
AF7A IEC 61850 Logical Node RRBFx Name Prefix (24 items) 0 to 65534 --- 1 F206 (None)
AFC2 IEC 61850 Logical Node RPSBx Name Prefix 0 to 65534 --- 1 F206 (None)
AFC5 IEC 61850 Logical Node RRECx Name Prefix (6 items) 0 to 65534 --- 1 F206 (None)
AFD7 IEC 61850 Logical Node MMXUx Name Prefix (6 items) 0 to 65534 --- 1 F206 (None)
AFE9 IEC 61850 Logical Node GGIOx Name Prefix (2 items) 0 to 65534 --- 1 F206 (None)
AFEF IEC 61850 Logical Node RFLOx Name Prefix (5 items) 0 to 65534 --- 1 F206 (None)
AFFE IEC 61850 Logical Node XCBRx Name Prefix (2 items) 0 to 65534 --- 1 F206 (None)
B004 IEC 61850 Logical Node PTRCx Name Prefix (2 items) 0 to 65534 --- 1 F206 (None)
B00A IEC 61850 Logical Node PDIFx Name Prefix (4 items) 0 to 65534 --- 1 F206 (None)
B016 IEC 61850 Logical Node MMXNx Name Prefix (37 items) 0 to 65534 --- 1 F206 (None)
IEC 61850 MMXU Deadbands (Read/Write Setting) (6 modules)
B100 IEC 61850 MMXU TotW Deadband 1 0.001 to 100 % 0.001 F003 10000
B102 IEC 61850 MMXU TotVAr Deadband 1 0.001 to 100 % 0.001 F003 10000
B104 IEC 61850 MMXU TotVA Deadband 1 0.001 to 100 % 0.001 F003 10000
B106 IEC 61850 MMXU TotPF Deadband 1 0.001 to 100 % 0.001 F003 10000
B108 IEC 61850 MMXU Hz Deadband 1 0.001 to 100 % 0.001 F003 10000
B10A IEC 61850 MMXU PPV.phsAB Deadband 1 0.001 to 100 % 0.001 F003 10000
B10C IEC 61850 MMXU PPV.phsBC Deadband 1 0.001 to 100 % 0.001 F003 10000
B10E IEC 61850 MMXU PPV.phsCA Deadband 1 0.001 to 100 % 0.001 F003 10000
B110 IEC 61850 MMXU PhV.phsADeadband 1 0.001 to 100 % 0.001 F003 10000
B112 IEC 61850 MMXU PhV.phsB Deadband 1 0.001 to 100 % 0.001 F003 10000
B114 IEC 61850 MMXU PhV.phsC Deadband 1 0.001 to 100 % 0.001 F003 10000
B116 IEC 61850 MMXU A.phsA Deadband 1 0.001 to 100 % 0.001 F003 10000
B118 IEC 61850 MMXU A.phsB Deadband 1 0.001 to 100 % 0.001 F003 10000
B11A IEC 61850 MMXU A.phsC Deadband 1 0.001 to 100 % 0.001 F003 10000
B11C IEC 61850 MMXU A.neut Deadband 1 0.001 to 100 % 0.001 F003 10000
B11E IEC 61850 MMXU W.phsA Deadband 1 0.001 to 100 % 0.001 F003 10000
B120 IEC 61850 MMXU W.phsB Deadband 1 0.001 to 100 % 0.001 F003 10000
B122 IEC 61850 MMXU W.phsC Deadband 1 0.001 to 100 % 0.001 F003 10000
B124 IEC 61850 MMXU VAr.phsA Deadband 1 0.001 to 100 % 0.001 F003 10000
B126 IEC 61850 MMXU VAr.phsB Deadband 1 0.001 to 100 % 0.001 F003 10000
B128 IEC 61850 MMXU VAr.phsC Deadband 1 0.001 to 100 % 0.001 F003 10000
B12A IEC 61850 MMXU VA.phsA Deadband 1 0.001 to 100 % 0.001 F003 10000
B12C IEC 61850 MMXU VA.phsB Deadband 1 0.001 to 100 % 0.001 F003 10000
B12E IEC 61850 MMXU VA.phsC Deadband 1 0.001 to 100 % 0.001 F003 10000
B130 IEC 61850 MMXU PF.phsA Deadband 1 0.001 to 100 % 0.001 F003 10000
B132 IEC 61850 MMXU PF.phsB Deadband 1 0.001 to 100 % 0.001 F003 10000
B134 IEC 61850 MMXU PF.phsC Deadband 1 0.001 to 100 % 0.001 F003 10000
B136 ...Repeated for Deadband 2

GE Multilin B30 Bus Differential Relay B-31

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 25 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
B16C ...Repeated for Deadband 3
B1A2 ...Repeated for Deadband 4
B1D8 ...Repeated for Deadband 5
B20E ...Repeated for Deadband 6
IEC 61850 GGIO2 Control Configuration (Read/Write Setting) (64 modules)

B B300
B301
IEC 61850 GGIO2.CF.SPCSO1.ctlModel Value
IEC 61850 GGIO2.CF.SPCSO2.ctlModel Value
0 to 2
0 to 2
---
---
1
1
F001
F001
2
2
B302 IEC 61850 GGIO2.CF.SPCSO3.ctlModel Value 0 to 2 --- 1 F001 2
B303 IEC 61850 GGIO2.CF.SPCSO4.ctlModel Value 0 to 2 --- 1 F001 2
B304 IEC 61850 GGIO2.CF.SPCSO5.ctlModel Value 0 to 2 --- 1 F001 2
B305 IEC 61850 GGIO2.CF.SPCSO6.ctlModel Value 0 to 2 --- 1 F001 2
B306 IEC 61850 GGIO2.CF.SPCSO7.ctlModel Value 0 to 2 --- 1 F001 2
B307 IEC 61850 GGIO2.CF.SPCSO8.ctlModel Value 0 to 2 --- 1 F001 2
B308 IEC 61850 GGIO2.CF.SPCSO9.ctlModel Value 0 to 2 --- 1 F001 2
B309 IEC 61850 GGIO2.CF.SPCSO10.ctlModel Value 0 to 2 --- 1 F001 2
B30A IEC 61850 GGIO2.CF.SPCSO11.ctlModel Value 0 to 2 --- 1 F001 2
B30B IEC 61850 GGIO2.CF.SPCSO12.ctlModel Value 0 to 2 --- 1 F001 2
B30C IEC 61850 GGIO2.CF.SPCSO13.ctlModel Value 0 to 2 --- 1 F001 2
B30D IEC 61850 GGIO2.CF.SPCSO14.ctlModel Value 0 to 2 --- 1 F001 2
B30E IEC 61850 GGIO2.CF.SPCSO15.ctlModel Value 0 to 2 --- 1 F001 2
B30F IEC 61850 GGIO2.CF.SPCSO16.ctlModel Value 0 to 2 --- 1 F001 2
B310 IEC 61850 GGIO2.CF.SPCSO17.ctlModel Value 0 to 2 --- 1 F001 2
B311 IEC 61850 GGIO2.CF.SPCSO18.ctlModel Value 0 to 2 --- 1 F001 2
B312 IEC 61850 GGIO2.CF.SPCSO19.ctlModel Value 0 to 2 --- 1 F001 2
B313 IEC 61850 GGIO2.CF.SPCSO20.ctlModel Value 0 to 2 --- 1 F001 2
B314 IEC 61850 GGIO2.CF.SPCSO21.ctlModel Value 0 to 2 --- 1 F001 2
B315 IEC 61850 GGIO2.CF.SPCSO22.ctlModel Value 0 to 2 --- 1 F001 2
B316 IEC 61850 GGIO2.CF.SPCSO23.ctlModel Value 0 to 2 --- 1 F001 2
B317 IEC 61850 GGIO2.CF.SPCSO24.ctlModel Value 0 to 2 --- 1 F001 2
B318 IEC 61850 GGIO2.CF.SPCSO25.ctlModel Value 0 to 2 --- 1 F001 2
B319 IEC 61850 GGIO2.CF.SPCSO26.ctlModel Value 0 to 2 --- 1 F001 2
B31A IEC 61850 GGIO2.CF.SPCSO27.ctlModel Value 0 to 2 --- 1 F001 2
B31B IEC 61850 GGIO2.CF.SPCSO28.ctlModel Value 0 to 2 --- 1 F001 2
B31C IEC 61850 GGIO2.CF.SPCSO29.ctlModel Value 0 to 2 --- 1 F001 2
B31D IEC 61850 GGIO2.CF.SPCSO30.ctlModel Value 0 to 2 --- 1 F001 2
B31E IEC 61850 GGIO2.CF.SPCSO31.ctlModel Value 0 to 2 --- 1 F001 2
B31F IEC 61850 GGIO2.CF.SPCSO32.ctlModel Value 0 to 2 --- 1 F001 2
BC20 IEC 61850 GGIO2.CF.SPCSO33.ctlModel Value 0 to 2 --- 1 F001 2
BC21 IEC 61850 GGIO2.CF.SPCSO34.ctlModel Value 0 to 2 --- 1 F001 2
BC22 IEC 61850 GGIO2.CF.SPCSO35.ctlModel Value 0 to 2 --- 1 F001 2
BC23 IEC 61850 GGIO2.CF.SPCSO36.ctlModel Value 0 to 2 --- 1 F001 2
BC24 IEC 61850 GGIO2.CF.SPCSO37.ctlModel Value 0 to 2 --- 1 F001 2
BC25 IEC 61850 GGIO2.CF.SPCSO38.ctlModel Value 0 to 2 --- 1 F001 2
BC26 IEC 61850 GGIO2.CF.SPCSO39.ctlModel Value 0 to 2 --- 1 F001 2
BC27 IEC 61850 GGIO2.CF.SPCSO40.ctlModel Value 0 to 2 --- 1 F001 2
BC28 IEC 61850 GGIO2.CF.SPCSO41.ctlModel Value 0 to 2 --- 1 F001 2
BC29 IEC 61850 GGIO2.CF.SPCSO42.ctlModel Value 0 to 2 --- 1 F001 2
BC2A IEC 61850 GGIO2.CF.SPCSO43.ctlModel Value 0 to 2 --- 1 F001 2
BC2B IEC 61850 GGIO2.CF.SPCSO44.ctlModel Value 0 to 2 --- 1 F001 2
BC2C IEC 61850 GGIO2.CF.SPCSO45.ctlModel Value 0 to 2 --- 1 F001 2
BC2D IEC 61850 GGIO2.CF.SPCSO46.ctlModel Value 0 to 2 --- 1 F001 2
BC2E IEC 61850 GGIO2.CF.SPCSO47.ctlModel Value 0 to 2 --- 1 F001 2
BC2F IEC 61850 GGIO2.CF.SPCSO48.ctlModel Value 0 to 2 --- 1 F001 2
BC30 IEC 61850 GGIO2.CF.SPCSO49.ctlModel Value 0 to 2 --- 1 F001 2

B-32 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 26 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
BC31 IEC 61850 GGIO2.CF.SPCSO50.ctlModel Value 0 to 2 --- 1 F001 2
BC32 IEC 61850 GGIO2.CF.SPCSO51.ctlModel Value 0 to 2 --- 1 F001 2
BC33 IEC 61850 GGIO2.CF.SPCSO52.ctlModel Value 0 to 2 --- 1 F001 2
BC34 IEC 61850 GGIO2.CF.SPCSO53.ctlModel Value 0 to 2 --- 1 F001 2
BC35 IEC 61850 GGIO2.CF.SPCSO54.ctlModel Value 0 to 2 --- 1 F001 2
BC36 IEC 61850 GGIO2.CF.SPCSO55.ctlModel Value 0 to 2 --- 1 F001 2 B
BC37 IEC 61850 GGIO2.CF.SPCSO56.ctlModel Value 0 to 2 --- 1 F001 2
BC38 IEC 61850 GGIO2.CF.SPCSO57.ctlModel Value 0 to 2 --- 1 F001 2
BC39 IEC 61850 GGIO2.CF.SPCSO58.ctlModel Value 0 to 2 --- 1 F001 2
BC3A IEC 61850 GGIO2.CF.SPCSO59.ctlModel Value 0 to 2 --- 1 F001 2
BC3B IEC 61850 GGIO2.CF.SPCSO60.ctlModel Value 0 to 2 --- 1 F001 2
BC3C IEC 61850 GGIO2.CF.SPCSO61.ctlModel Value 0 to 2 --- 1 F001 2
BC3D IEC 61850 GGIO2.CF.SPCSO62.ctlModel Value 0 to 2 --- 1 F001 2
BC3E IEC 61850 GGIO2.CF.SPCSO63.ctlModel Value 0 to 2 --- 1 F001 2
BC3F IEC 61850 GGIO2.CF.SPCSO64.ctlModel Value 0 to 2 --- 1 F001 2
Contact Inputs (Read/Write Setting) (96 modules)
BB00 Contact Input 1 Name --- --- --- F205 “Cont Ip 1“
BB06 Contact Input 1 Events 0 to 1 --- 1 F102 0 (Disabled)
BB07 Contact Input 1 Debounce Time 0 to 16 ms 0.5 F001 20
BB08 ...Repeated for Contact Input 2
BB10 ...Repeated for Contact Input 3
BB18 ...Repeated for Contact Input 4
BB20 ...Repeated for Contact Input 5
BB28 ...Repeated for Contact Input 6
BB30 ...Repeated for Contact Input 7
BB38 ...Repeated for Contact Input 8
BB40 ...Repeated for Contact Input 9
BB48 ...Repeated for Contact Input 10
BB50 ...Repeated for Contact Input 11
BB58 ...Repeated for Contact Input 12
BB60 ...Repeated for Contact Input 13
BB68 ...Repeated for Contact Input 14
BB70 ...Repeated for Contact Input 15
BB78 ...Repeated for Contact Input 16
BB80 ...Repeated for Contact Input 17
BB88 ...Repeated for Contact Input 18
BB90 ...Repeated for Contact Input 19
BB98 ...Repeated for Contact Input 20
BBA0 ...Repeated for Contact Input 21
BBA8 ...Repeated for Contact Input 22
BBB0 ...Repeated for Contact Input 23
BBB8 ...Repeated for Contact Input 24
BBC0 ...Repeated for Contact Input 25
BBC8 ...Repeated for Contact Input 26
BBD0 ...Repeated for Contact Input 27
BBD8 ...Repeated for Contact Input 28
BBE0 ...Repeated for Contact Input 29
BBE8 ...Repeated for Contact Input 30
BBF0 ...Repeated for Contact Input 31
BBF8 ...Repeated for Contact Input 32
BC00 ...Repeated for Contact Input 33
BC08 ...Repeated for Contact Input 34
BC10 ...Repeated for Contact Input 35
BC18 ...Repeated for Contact Input 36

GE Multilin B30 Bus Differential Relay B-33

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 27 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
BC20 ...Repeated for Contact Input 37
BC28 ...Repeated for Contact Input 38
BC30 ...Repeated for Contact Input 39
BC38 ...Repeated for Contact Input 40
BC40 ...Repeated for Contact Input 41

B BC48
BC50
...Repeated for Contact Input 42
...Repeated for Contact Input 43
BC58 ...Repeated for Contact Input 44
BC60 ...Repeated for Contact Input 45
BC68 ...Repeated for Contact Input 46
BC70 ...Repeated for Contact Input 47
BC78 ...Repeated for Contact Input 48
BC80 ...Repeated for Contact Input 49
BC88 ...Repeated for Contact Input 50
BC90 ...Repeated for Contact Input 51
BC98 ...Repeated for Contact Input 52
BCA0 ...Repeated for Contact Input 53
BCA8 ...Repeated for Contact Input 54
BCB0 ...Repeated for Contact Input 55
BCB8 ...Repeated for Contact Input 56
BCC0 ...Repeated for Contact Input 57
BCC8 ...Repeated for Contact Input 58
BCD0 ...Repeated for Contact Input 59
BCD8 ...Repeated for Contact Input 60
BCE0 ...Repeated for Contact Input 61
BCE8 ...Repeated for Contact Input 62
BCF0 ...Repeated for Contact Input 63
BCF8 ...Repeated for Contact Input 64
BD00 ...Repeated for Contact Input 65
BD08 ...Repeated for Contact Input 66
BD10 ...Repeated for Contact Input 67
BD18 ...Repeated for Contact Input 68
BD20 ...Repeated for Contact Input 69
BD28 ...Repeated for Contact Input 70
BD30 ...Repeated for Contact Input 71
BD38 ...Repeated for Contact Input 72
BD40 ...Repeated for Contact Input 73
BD48 ...Repeated for Contact Input 74
BD50 ...Repeated for Contact Input 75
BD58 ...Repeated for Contact Input 76
BD60 ...Repeated for Contact Input 77
BD68 ...Repeated for Contact Input 78
BD70 ...Repeated for Contact Input 79
BD78 ...Repeated for Contact Input 80
BD80 ...Repeated for Contact Input 81
BD88 ...Repeated for Contact Input 82
BD90 ...Repeated for Contact Input 83
BD98 ...Repeated for Contact Input 84
BDA0 ...Repeated for Contact Input 85
BDA8 ...Repeated for Contact Input 86
BDB0 ...Repeated for Contact Input 87
BDB8 ...Repeated for Contact Input 88
BDC0 ...Repeated for Contact Input 89
BDC8 ...Repeated for Contact Input 90

B-34 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 28 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
BDD0 ...Repeated for Contact Input 91
BDD8 ...Repeated for Contact Input 92
BDE0 ...Repeated for Contact Input 93
BDE8 ...Repeated for Contact Input 94
BDF0 ...Repeated for Contact Input 95
BDF8 ...Repeated for Contact Input 96 B
Contact Input Thresholds (Read/Write Setting)
BE00 Contact Input n Threshold, n = 1 to 24 (24 items) 0 to 3 --- 1 F128 1 (33 Vdc)
Virtual Inputs (Read/Write Setting) (64 modules)
BE90 Virtual Input 1 Function 0 to 1 --- 1 F102 0 (Disabled)
BE91 Virtual Input 1 Name --- --- --- F205 “Virt Ip 1“
BE9B Virtual Input 1 Programmed Type 0 to 1 --- 1 F127 0 (Latched)
BE9C Virtual Input 1 Events 0 to 1 --- 1 F102 0 (Disabled)
BE9D Reserved (3 items) --- --- --- F001 0
BEA0 ...Repeated for Virtual Input 2
BEB0 ...Repeated for Virtual Input 3
BEC0 ...Repeated for Virtual Input 4
BED0 ...Repeated for Virtual Input 5
BEE0 ...Repeated for Virtual Input 6
BEF0 ...Repeated for Virtual Input 7
BF00 ...Repeated for Virtual Input 8
BF10 ...Repeated for Virtual Input 9
BF20 ...Repeated for Virtual Input 10
BF30 ...Repeated for Virtual Input 11
BF40 ...Repeated for Virtual Input 12
BF50 ...Repeated for Virtual Input 13
BF60 ...Repeated for Virtual Input 14
BF70 ...Repeated for Virtual Input 15
BF80 ...Repeated for Virtual Input 16
BF90 ...Repeated for Virtual Input 17
BFA0 ...Repeated for Virtual Input 18
BFB0 ...Repeated for Virtual Input 19
BFC0 ...Repeated for Virtual Input 20
BFD0 ...Repeated for Virtual Input 21
BFE0 ...Repeated for Virtual Input 22
BFF0 ...Repeated for Virtual Input 23
C000 ...Repeated for Virtual Input 24
C010 ...Repeated for Virtual Input 25
C020 ...Repeated for Virtual Input 26
C030 ...Repeated for Virtual Input 27
C040 ...Repeated for Virtual Input 28
C050 ...Repeated for Virtual Input 29
C060 ...Repeated for Virtual Input 30
C070 ...Repeated for Virtual Input 31
C080 ...Repeated for Virtual Input 32
C090 ...Repeated for Virtual Input 33
C0A0 ...Repeated for Virtual Input 34
C0B0 ...Repeated for Virtual Input 35
C0C0 ...Repeated for Virtual Input 36
C0D0 ...Repeated for Virtual Input 37
C0E0 ...Repeated for Virtual Input 38
C0F0 ...Repeated for Virtual Input 39
C100 ...Repeated for Virtual Input 40
C110 ...Repeated for Virtual Input 41

GE Multilin B30 Bus Differential Relay B-35

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 29 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
C120 ...Repeated for Virtual Input 42
C130 ...Repeated for Virtual Input 43
C140 ...Repeated for Virtual Input 44
C150 ...Repeated for Virtual Input 45
C160 ...Repeated for Virtual Input 46

B C170
C180
...Repeated for Virtual Input 47
...Repeated for Virtual Input 48
C190 ...Repeated for Virtual Input 49
C1A0 ...Repeated for Virtual Input 50
C1B0 ...Repeated for Virtual Input 51
C1C0 ...Repeated for Virtual Input 52
C1D0 ...Repeated for Virtual Input 53
C1E0 ...Repeated for Virtual Input 54
C1F0 ...Repeated for Virtual Input 55
C200 ...Repeated for Virtual Input 56
C210 ...Repeated for Virtual Input 57
C220 ...Repeated for Virtual Input 58
C230 ...Repeated for Virtual Input 59
C240 ...Repeated for Virtual Input 60
C250 ...Repeated for Virtual Input 61
C260 ...Repeated for Virtual Input 62
C270 ...Repeated for Virtual Input 63
C280 ...Repeated for Virtual Input 64
Virtual Outputs (Read/Write Setting) (96 modules)
C130 Virtual Output 1 Name --- --- --- F205 “Virt Op 1 “
C136 Virtual Output 1 Events 0 to 1 --- 1 F102 0 (Disabled)
C137 Reserved --- --- --- F001 0
C138 ...Repeated for Virtual Output 2
C140 ...Repeated for Virtual Output 3
C148 ...Repeated for Virtual Output 4
C150 ...Repeated for Virtual Output 5
C158 ...Repeated for Virtual Output 6
C160 ...Repeated for Virtual Output 7
C168 ...Repeated for Virtual Output 8
C170 ...Repeated for Virtual Output 9
C178 ...Repeated for Virtual Output 10
C180 ...Repeated for Virtual Output 11
C188 ...Repeated for Virtual Output 12
C190 ...Repeated for Virtual Output 13
C198 ...Repeated for Virtual Output 14
C1A0 ...Repeated for Virtual Output 15
C1A8 ...Repeated for Virtual Output 16
C1B0 ...Repeated for Virtual Output 17
C1B8 ...Repeated for Virtual Output 18
C1C0 ...Repeated for Virtual Output 19
C1C8 ...Repeated for Virtual Output 20
C1D0 ...Repeated for Virtual Output 21
C1D8 ...Repeated for Virtual Output 22
C1E0 ...Repeated for Virtual Output 23
C1E8 ...Repeated for Virtual Output 24
C1F0 ...Repeated for Virtual Output 25
C1F8 ...Repeated for Virtual Output 26
C200 ...Repeated for Virtual Output 27
C208 ...Repeated for Virtual Output 28

B-36 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 30 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
C210 ...Repeated for Virtual Output 29
C218 ...Repeated for Virtual Output 30
C220 ...Repeated for Virtual Output 31
C228 ...Repeated for Virtual Output 32
C230 ...Repeated for Virtual Output 33
C238 ...Repeated for Virtual Output 34 B
C240 ...Repeated for Virtual Output 35
C248 ...Repeated for Virtual Output 36
C250 ...Repeated for Virtual Output 37
C258 ...Repeated for Virtual Output 38
C260 ...Repeated for Virtual Output 39
C268 ...Repeated for Virtual Output 40
C270 ...Repeated for Virtual Output 41
C278 ...Repeated for Virtual Output 42
C280 ...Repeated for Virtual Output 43
C288 ...Repeated for Virtual Output 44
C290 ...Repeated for Virtual Output 45
C298 ...Repeated for Virtual Output 46
C2A0 ...Repeated for Virtual Output 47
C2A8 ...Repeated for Virtual Output 48
C2B0 ...Repeated for Virtual Output 49
C2B8 ...Repeated for Virtual Output 50
C2C0 ...Repeated for Virtual Output 51
C2C8 ...Repeated for Virtual Output 52
C2D0 ...Repeated for Virtual Output 53
C2D8 ...Repeated for Virtual Output 54
C2E0 ...Repeated for Virtual Output 55
C2E8 ...Repeated for Virtual Output 56
C2F0 ...Repeated for Virtual Output 57
C2F8 ...Repeated for Virtual Output 58
C300 ...Repeated for Virtual Output 59
C308 ...Repeated for Virtual Output 60
C310 ...Repeated for Virtual Output 61
C318 ...Repeated for Virtual Output 62
C320 ...Repeated for Virtual Output 63
C328 ...Repeated for Virtual Output 64
C330 ...Repeated for Virtual Output 65
C338 ...Repeated for Virtual Output 66
C340 ...Repeated for Virtual Output 67
C348 ...Repeated for Virtual Output 68
C350 ...Repeated for Virtual Output 69
C358 ...Repeated for Virtual Output 70
C360 ...Repeated for Virtual Output 71
C368 ...Repeated for Virtual Output 72
C370 ...Repeated for Virtual Output 73
C378 ...Repeated for Virtual Output 74
C380 ...Repeated for Virtual Output 75
C388 ...Repeated for Virtual Output 76
C390 ...Repeated for Virtual Output 77
C398 ...Repeated for Virtual Output 78
C3A0 ...Repeated for Virtual Output 79
C3A8 ...Repeated for Virtual Output 80
C3B0 ...Repeated for Virtual Output 81
C3B8 ...Repeated for Virtual Output 82

GE Multilin B30 Bus Differential Relay B-37

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 31 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
C3C0 ...Repeated for Virtual Output 83
C3C8 ...Repeated for Virtual Output 84
C3D0 ...Repeated for Virtual Output 85
C3D8 ...Repeated for Virtual Output 86
C3E0 ...Repeated for Virtual Output 87

B C3E8
C3F0
...Repeated for Virtual Output 88
...Repeated for Virtual Output 89
C3F8 ...Repeated for Virtual Output 90
C400 ...Repeated for Virtual Output 91
C408 ...Repeated for Virtual Output 92
C410 ...Repeated for Virtual Output 93
C418 ...Repeated for Virtual Output 94
C420 ...Repeated for Virtual Output 95
C428 ...Repeated for Virtual Output 96
Mandatory (Read/Write Setting)
C430 Test Mode Function 0 to 1 --- 1 F102 0 (Disabled)
C431 Force VFD and LED 0 to 1 --- 1 F126 0 (No)
C432 Test Mode Initiate 0 to 65535 --- 1 F300 1
Mandatory (Read/Write Command)
C433 Clear All Relay Records Command 0 to 1 --- 1 F126 0 (No)
Contact Outputs (Read/Write Setting) (64 modules)
C440 Contact Output 1 Name --- --- --- F205 “Cont Op 1"
C446 Contact Output 1 Operation 0 to 65535 --- 1 F300 0
C447 Contact Output 1 Seal In 0 to 65535 --- 1 F300 0
C448 Latching Output 1 Reset 0 to 65535 --- 1 F300 0
C449 Contact Output 1 Events 0 to 1 --- 1 F102 1 (Enabled)
C44A Latching Output 1 Type 0 to 1 --- 1 F090 0 (Operate-dominant)
C44B Reserved --- --- --- F001 0
C44C ...Repeated for Contact Output 2
C458 ...Repeated for Contact Output 3
C464 ...Repeated for Contact Output 4
C470 ...Repeated for Contact Output 5
C47C ...Repeated for Contact Output 6
C488 ...Repeated for Contact Output 7
C494 ...Repeated for Contact Output 8
C4A0 ...Repeated for Contact Output 9
C4AC ...Repeated for Contact Output 10
C4B8 ...Repeated for Contact Output 11
C4C4 ...Repeated for Contact Output 12
C4D0 ...Repeated for Contact Output 13
C4DC ...Repeated for Contact Output 14
C4E8 ...Repeated for Contact Output 15
C4F4 ...Repeated for Contact Output 16
C500 ...Repeated for Contact Output 17
C50C ...Repeated for Contact Output 18
C518 ...Repeated for Contact Output 19
C524 ...Repeated for Contact Output 20
C530 ...Repeated for Contact Output 21
C53C ...Repeated for Contact Output 22
C548 ...Repeated for Contact Output 23
C554 ...Repeated for Contact Output 24
C560 ...Repeated for Contact Output 25
C56C ...Repeated for Contact Output 26
C578 ...Repeated for Contact Output 27

B-38 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 32 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
C584 ...Repeated for Contact Output 28
C590 ...Repeated for Contact Output 29
C59C ...Repeated for Contact Output 30
C5A8 ...Repeated for Contact Output 31
C5B4 ...Repeated for Contact Output 32
C5C0 ...Repeated for Contact Output 33 B
C5CC ...Repeated for Contact Output 34
C5D8 ...Repeated for Contact Output 35
C5E4 ...Repeated for Contact Output 36
C5F0 ...Repeated for Contact Output 37
C5FC ...Repeated for Contact Output 38
C608 ...Repeated for Contact Output 39
C614 ...Repeated for Contact Output 40
C620 ...Repeated for Contact Output 41
C62C ...Repeated for Contact Output 42
C638 ...Repeated for Contact Output 43
C644 ...Repeated for Contact Output 44
C650 ...Repeated for Contact Output 45
C65C ...Repeated for Contact Output 46
C668 ...Repeated for Contact Output 47
C674 ...Repeated for Contact Output 48
C680 ...Repeated for Contact Output 49
C68C ...Repeated for Contact Output 50
C698 ...Repeated for Contact Output 51
C6A4 ...Repeated for Contact Output 52
C6B0 ...Repeated for Contact Output 53
C6BC ...Repeated for Contact Output 54
C6C8 ...Repeated for Contact Output 55
C6D4 ...Repeated for Contact Output 56
C6E0 ...Repeated for Contact Output 57
C6EC ...Repeated for Contact Output 58
C6F8 ...Repeated for Contact Output 59
C704 ...Repeated for Contact Output 60
C710 ...Repeated for Contact Output 61
C71C ...Repeated for Contact Output 62
C728 ...Repeated for Contact Output 63
C734 ...Repeated for Contact Output 64
Reset (Read/Write Setting)
C750 FlexLogic™ operand which initiates a reset 0 to 65535 --- 1 F300 0
Control Pushbuttons (Read/Write Setting) (7 modules)
C760 Control Pushbutton 1 Function 0 to 1 --- 1 F102 0 (Disabled)
C761 Control Pushbutton 1 Events 0 to 1 --- 1 F102 0 (Disabled)
C762 ...Repeated for Control Pushbutton 2
C764 ...Repeated for Control Pushbutton 3
C766 ...Repeated for Control Pushbutton 4
C768 ...Repeated for Control Pushbutton 5
C76A ...Repeated for Control Pushbutton 6
C76C ...Repeated for Control Pushbutton 7
Clear Records (Read/Write Setting)
C771 Clear User Fault Reports operand 0 to 65535 --- 1 F300 0
C772 Clear Event Records operand 0 to 65535 --- 1 F300 0
C773 Clear Oscillography operand 0 to 65535 --- 1 F300 0
C77F Clear Unauthorized Access operand 0 to 65535 --- 1 F300 0
C781 Clear Platform Direct Input/Output Statistics operand 0 to 65535 --- 1 F300 0

GE Multilin B30 Bus Differential Relay B-39

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 33 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
C782 Reserved (13 items) --- --- --- F001 0
Force Contact Inputs/Outputs (Read/Write Settings)
C7A0 Force Contact Input x State (96 items) 0 to 2 --- 1 F144 0 (Disabled)
C800 Force Contact Output x State (64 items) 0 to 3 --- 1 F131 0 (Disabled)
Direct Inputs/Outputs (Read/Write Setting)

B C880
C881
Direct Device ID
Direct I/O Channel 1 Ring Configuration Function
1 to 16
0 to 1
---
---
1
1
F001
F126
1
0 (No)
C882 Platform Direct I/O Data Rate 64 to 128 kbps 64 F001 64
C883 Direct I/O Channel 2 Ring Configuration Function 0 to 1 --- 1 F126 0 (No)
C884 Platform Direct I/O Crossover Function 0 to 1 --- 1 F102 0 (Disabled)
Direct input/output commands (Read/Write Command)
C888 Direct input/output clear counters command 0 to 1 --- 1 F126 0 (No)
Direct inputs (Read/Write Setting) (96 modules)
C890 Direct Input 1 Device Number 0 to 16 --- 1 F001 0
C891 Direct Input 1 Number 0 to 96 --- 1 F001 0
C892 Direct Input 1 Default State 0 to 3 --- 1 F086 0 (Off)
C893 Direct Input 1 Events 0 to 1 --- 1 F102 0 (Disabled)
C894 ...Repeated for Direct Input 2
C898 ...Repeated for Direct Input 3
C89C ...Repeated for Direct Input 4
C8A0 ...Repeated for Direct Input 5
C8A4 ...Repeated for Direct Input 6
C8A8 ...Repeated for Direct Input 7
C8AC ...Repeated for Direct Input 8
C8B0 ...Repeated for Direct Input 9
C8B4 ...Repeated for Direct Input 10
C8B8 ...Repeated for Direct Input 11
C8BC ...Repeated for Direct Input 12
C8C0 ...Repeated for Direct Input 13
C8C4 ...Repeated for Direct Input 14
C8C8 ...Repeated for Direct Input 15
C8CC ...Repeated for Direct Input 16
C8D0 ...Repeated for Direct Input 17
C8D4 ...Repeated for Direct Input 18
C8D8 ...Repeated for Direct Input 19
C8DC ...Repeated for Direct Input 20
C8E0 ...Repeated for Direct Input 21
C8E4 ...Repeated for Direct Input 22
C8E8 ...Repeated for Direct Input 23
C8EC ...Repeated for Direct Input 24
C8F0 ...Repeated for Direct Input 25
C8F4 ...Repeated for Direct Input 26
C8F8 ...Repeated for Direct Input 27
C8FC ...Repeated for Direct Input 28
C900 ...Repeated for Direct Input 29
C904 ...Repeated for Direct Input 30
C908 ...Repeated for Direct Input 31
C90C ...Repeated for Direct Input 32
Platform Direct Outputs (Read/Write Setting) (96 modules)
CA10 Direct Output 1 Operand 0 to 65535 --- 1 F300 0
CA11 Direct Output 1 Events 0 to 1 --- 1 F102 0 (Disabled)
CA12 ...Repeated for Direct Output 2
CA14 ...Repeated for Direct Output 3
CA16 ...Repeated for Direct Output 4

B-40 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 34 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
CA18 ...Repeated for Direct Output 5
CA1A ...Repeated for Direct Output 6
CA1C ...Repeated for Direct Output 7
CA1E ...Repeated for Direct Output 8
CA20 ...Repeated for Direct Output 9
CA22 ...Repeated for Direct Output 10 B
CA24 ...Repeated for Direct Output 11
CA26 ...Repeated for Direct Output 12
CA28 ...Repeated for Direct Output 13
CA2A ...Repeated for Direct Output 14
CA2C ...Repeated for Direct Output 15
CA2E ...Repeated for Direct Output 16
CA30 ...Repeated for Direct Output 17
CA32 ...Repeated for Direct Output 18
CA34 ...Repeated for Direct Output 19
CA36 ...Repeated for Direct Output 20
CA38 ...Repeated for Direct Output 21
CA3A ...Repeated for Direct Output 22
CA3C ...Repeated for Direct Output 23
CA3E ...Repeated for Direct Output 24
CA40 ...Repeated for Direct Output 25
CA42 ...Repeated for Direct Output 26
CA44 ...Repeated for Direct Output 27
CA46 ...Repeated for Direct Output 28
CA48 ...Repeated for Direct Output 29
CA4A ...Repeated for Direct Output 30
CA4C ...Repeated for Direct Output 31
CA4E ...Repeated for Direct Output 32
Direct Input/Output Alarms (Read/Write Setting)
CAD0 Direct Input/Output Channel 1 CRC Alarm Function 0 to 1 --- 1 F102 0 (Disabled)
CAD1 Direct I/O Channel 1 CRC Alarm Message Count 100 to 10000 --- 1 F001 600
CAD2 Direct Input/Output Channel 1 CRC Alarm Threshold 1 to 1000 --- 1 F001 10
CAD3 Direct Input/Output Channel 1 CRC Alarm Events 0 to 1 --- 1 F102 0 (Disabled)
CAD4 Reserved (4 items) 1 to 1000 --- 1 F001 10
CAD8 Direct Input/Output Channel 2 CRC Alarm Function 0 to 1 --- 1 F102 0 (Disabled)
CAD9 Direct I/O Channel 2 CRC Alarm Message Count 100 to 10000 --- 1 F001 600
CADA Direct Input/Output Channel 2 CRC Alarm Threshold 1 to 1000 --- 1 F001 10
CADB Direct Input/Output Channel 2 CRC Alarm Events 0 to 1 --- 1 F102 0 (Disabled)
CADC Reserved (4 items) 1 to 1000 --- 1 F001 10
CAE0 Direct I/O Ch 1 Unreturned Messages Alarm Function 0 to 1 --- 1 F102 0 (Disabled)
CAE1 Direct I/O Ch 1 Unreturned Messages Alarm Msg Count 100 to 10000 --- 1 F001 600
CAE2 Direct I/O Ch 1 Unreturned Messages Alarm Threshold 1 to 1000 --- 1 F001 10
CAE3 Direct I/O Ch 1 Unreturned Messages Alarm Events 0 to 1 --- 1 F102 0 (Disabled)
CAE4 Reserved (4 items) 1 to 1000 --- 1 F001 10
CAE8 Direct IO Ch 2 Unreturned Messages Alarm Function 0 to 1 --- 1 F102 0 (Disabled)
CAE9 Direct I/O Ch 2 Unreturned Messages Alarm Msg Count 100 to 10000 --- 1 F001 600
CAEA Direct I/O Ch 2 Unreturned Messages Alarm Threshold 1 to 1000 --- 1 F001 10
CAEB Direct I/O Channel 2 Unreturned Messages Alarm Events 0 to 1 --- 1 F102 0 (Disabled)
CAEC Reserved (4 items) 1 to 1000 --- 1 F001 10
Remote Devices (Read/Write Setting) (16 modules)
CB00 Remote Device 1 ID --- --- --- F202 “Remote Device 1“
CB08 Remote Device 1 Virtual LAN Identifier 0 to 4095 --- 1 F001 0
CB09 Remote Device 1 Ethernet APPID 0 to 16383 --- 1 F001 0
CB0A ...Repeated for Device 2

GE Multilin B30 Bus Differential Relay B-41

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 35 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
CB14 ...Repeated for Device 3
CB1E ...Repeated for Device 4
CB28 ...Repeated for Device 5
CB32 ...Repeated for Device 6
CB3C ...Repeated for Device 7

B CB46
CB50
...Repeated for Device 8
...Repeated for Device 9
CB5A ...Repeated for Device 10
CB64 ...Repeated for Device 11
CB6E ...Repeated for Device 12
CB78 ...Repeated for Device 13
CB82 ...Repeated for Device 14
CB8C ...Repeated for Device 15
CB96 ...Repeated for Device 16
Remote Inputs (Read/Write Setting) (64 modules)
CBA0 Remote Input 1 Device 1 to 16 --- 1 F001 1
CBA1 Remote Input 1 Bit Pair 0 to 64 --- 1 F156 0 (None)
CBA2 Remote Input 1 Default State 0 to 3 --- 1 F086 0 (Off)
CBA3 Remote Input 1 Events 0 to 1 --- 1 F102 0 (Disabled)
CBA4 Remote Input 1 Name 1 to 64 --- 1 F205 “Rem Ip 1”
CBAA ...Repeated for Remote Input 2
CBB4 ...Repeated for Remote Input 3
CBBE ...Repeated for Remote Input 4
CBC8 ...Repeated for Remote Input 5
CBD2 ...Repeated for Remote Input 6
CBDC ...Repeated for Remote Input 7
CBE6 ...Repeated for Remote Input 8
CBF0 ...Repeated for Remote Input 9
CBFA ...Repeated for Remote Input 10
CC04 ...Repeated for Remote Input 11
CC0E ...Repeated for Remote Input 12
CC18 ...Repeated for Remote Input 13
CC22 ...Repeated for Remote Input 14
CC2C ...Repeated for Remote Input 15
CC36 ...Repeated for Remote Input 16
CC40 ...Repeated for Remote Input 17
CC4A ...Repeated for Remote Input 18
CC54 ...Repeated for Remote Input 19
CC5E ...Repeated for Remote Input 20
CC68 ...Repeated for Remote Input 21
CC72 ...Repeated for Remote Input 22
CC7C ...Repeated for Remote Input 23
CC86 ...Repeated for Remote Input 24
CC90 ...Repeated for Remote Input 25
CC9A ...Repeated for Remote Input 26
CCA4 ...Repeated for Remote Input 27
CCAE ...Repeated for Remote Input 28
CCB8 ...Repeated for Remote Input 29
CCC2 ...Repeated for Remote Input 30
CCCC ...Repeated for Remote Input 31
CCD6 ...Repeated for Remote Input 32
CCE0 ...Repeated for Remote Input 33
CCEA ...Repeated for Remote Input 34
CCF4 ...Repeated for Remote Input 35

B-42 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

Table B–9: MODBUS MEMORY MAP (Sheet 36 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
CCFE ...Repeated for Remote Input 36
CD08 ...Repeated for Remote Input 37
CD12 ...Repeated for Remote Input 38
CD1C ...Repeated for Remote Input 39
CD26 ...Repeated for Remote Input 40
CD30 ...Repeated for Remote Input 41 B
CD3A ...Repeated for Remote Input 42
CD44 ...Repeated for Remote Input 43
CD4E ...Repeated for Remote Input 44
CD58 ...Repeated for Remote Input 45
CD62 ...Repeated for Remote Input 46
CD6C ...Repeated for Remote Input 47
CD76 ...Repeated for Remote Input 48
CD80 ...Repeated for Remote Input 49
CD8A ...Repeated for Remote Input 50
CD94 ...Repeated for Remote Input 51
CD9E ...Repeated for Remote Input 52
CDA8 ...Repeated for Remote Input 53
CDB2 ...Repeated for Remote Input 54
CDBC ...Repeated for Remote Input 55
CDC6 ...Repeated for Remote Input 56
CDD0 ...Repeated for Remote Input 57
CDDA ...Repeated for Remote Input 58
CDE4 ...Repeated for Remote Input 59
CDEE ...Repeated for Remote Input 60
CDF8 ...Repeated for Remote Input 61
CE02 ...Repeated for Remote Input 62
CE0C ...Repeated for Remote Input 63
CE16 ...Repeated for Remote Input 64
Remote Output DNA Pairs (Read/Write Setting) (32 modules)
CE20 Remote Output DNA 1 Operand 0 to 65535 --- 1 F300 0
CE21 Remote Output DNA 1 Events 0 to 1 --- 1 F102 0 (Disabled)
CE22 Reserved (2 items) 0 to 1 --- 1 F001 0
CE24 ...Repeated for Remote Output 2
CE28 ...Repeated for Remote Output 3
CE2C ...Repeated for Remote Output 4
CE30 ...Repeated for Remote Output 5
CE34 ...Repeated for Remote Output 6
CE38 ...Repeated for Remote Output 7
CE3C ...Repeated for Remote Output 8
CE40 ...Repeated for Remote Output 9
CE44 ...Repeated for Remote Output 10
CE48 ...Repeated for Remote Output 11
CE4C ...Repeated for Remote Output 12
CE50 ...Repeated for Remote Output 13
CE54 ...Repeated for Remote Output 14
CE58 ...Repeated for Remote Output 15
CE5C ...Repeated for Remote Output 16
CE60 ...Repeated for Remote Output 17
CE64 ...Repeated for Remote Output 18
CE68 ...Repeated for Remote Output 19
CE6C ...Repeated for Remote Output 20
CE70 ...Repeated for Remote Output 21
CE74 ...Repeated for Remote Output 22

GE Multilin B30 Bus Differential Relay B-43

 B.4 MEMORY MAPPING APPENDIX B

Table B–9: MODBUS MEMORY MAP (Sheet 37 of 37)

ADDR REGISTER NAME RANGE UNITS STEP FORMAT DEFAULT
CE78 ...Repeated for Remote Output 23
CE7C ...Repeated for Remote Output 24
CE80 ...Repeated for Remote Output 25
CE84 ...Repeated for Remote Output 26
CE88 ...Repeated for Remote Output 27

B CE8C
CE90
...Repeated for Remote Output 28
...Repeated for Remote Output 29
CE94 ...Repeated for Remote Output 30
CE98 ...Repeated for Remote Output 31
CE9C ...Repeated for Remote Output 32
Remote Output UserSt Pairs (Read/Write Setting) (32 modules)
CEA0 Remote Output UserSt 1 Operand 0 to 65535 --- 1 F300 0
CEA1 Remote Output UserSt 1 Events 0 to 1 --- 1 F102 0 (Disabled)
CEA2 Reserved (2 items) 0 to 1 --- 1 F001 0
CEA4 ...Repeated for Remote Output 2
CEA8 ...Repeated for Remote Output 3
CEAC ...Repeated for Remote Output 4
CEB0 ...Repeated for Remote Output 5
CEB4 ...Repeated for Remote Output 6
CEB8 ...Repeated for Remote Output 7
CEBC ...Repeated for Remote Output 8
CEC0 ...Repeated for Remote Output 9
CEC4 ...Repeated for Remote Output 10
CEC8 ...Repeated for Remote Output 11
CECC ...Repeated for Remote Output 12
CED0 ...Repeated for Remote Output 13
CED4 ...Repeated for Remote Output 14
CED8 ...Repeated for Remote Output 15
CEDC ...Repeated for Remote Output 16
CEE0 ...Repeated for Remote Output 17
CEE4 ...Repeated for Remote Output 18
CEE8 ...Repeated for Remote Output 19
CEEC ...Repeated for Remote Output 20
CEF0 ...Repeated for Remote Output 21
CEF4 ...Repeated for Remote Output 22
CEF8 ...Repeated for Remote Output 23
CEFC ...Repeated for Remote Output 24
CF00 ...Repeated for Remote Output 25
CF04 ...Repeated for Remote Output 26
CF08 ...Repeated for Remote Output 27
CF0C ...Repeated for Remote Output 28
CF10 ...Repeated for Remote Output 29
CF14 ...Repeated for Remote Output 30
CF18 ...Repeated for Remote Output 31
CF1C ...Repeated for Remote Output 32

B-44 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

B.4.2 DATA FORMATS

F001 F051
UR_UINT16 UNSIGNED 16 BIT INTEGER UR_UINT32 DATE in SR format (alternate format for F050)
First 16 bits are Month/Day (MM/DD/xxxx). Month: 1=January,
2=February,...,12=December; Day: 1 to 31 in steps of 1
F002
UR_SINT16 SIGNED 16 BIT INTEGER
Last 16 bits are Year (xx/xx/YYYY): 1970 to 2106 in steps of 1 B
F052
F003
UR_UINT32 TIME in SR format (alternate format for F050)
UR_UINT32 UNSIGNED 32 BIT INTEGER (2 registers)
First 16 bits are Hours/Minutes (HH:MM:xx.xxx).
High order word is stored in the first register.
Hours: 0=12am, 1=1am,...,12=12pm,...23=11pm;
Low order word is stored in the second register.
Minutes: 0 to 59 in steps of 1
Last 16 bits are Seconds (xx:xx:.SS.SSS): 0=00.000s,
F004 1=00.001,...,59999=59.999s)
UR_SINT32 SIGNED 32 BIT INTEGER (2 registers)
High order word is stored in the first register/
F060
Low order word is stored in the second register.
FLOATING_POINT IEEE FLOATING POINT (32 bits)

F005
F070
UR_UINT8 UNSIGNED 8 BIT INTEGER
HEX2 2 BYTES - 4 ASCII DIGITS

F006
F071
UR_SINT8 SIGNED 8 BIT INTEGER HEX4 4 BYTES - 8 ASCII DIGITS

F011 F072
UR_UINT16 FLEXCURVE DATA (120 points)
HEX6 6 BYTES - 12 ASCII DIGITS
A FlexCurve is an array of 120 consecutive data points (x, y) which
are interpolated to generate a smooth curve. The y-axis is the user
defined trip or operation time setting; the x-axis is the pickup ratio F073
and is pre-defined. Refer to format F119 for a listing of the pickup HEX8 8 BYTES - 16 ASCII DIGITS
ratios; the enumeration value for the pickup ratio indicates the off-
set into the FlexCurve base address where the corresponding time
value is stored. F074
HEX20 20 BYTES - 40 ASCII DIGITS

F012
DISPLAY_SCALE DISPLAY SCALING F083
(unsigned 16-bit integer) ENUMERATION: SELECTOR MODES

MSB indicates the SI units as a power of ten. LSB indicates the 0 = Time-Out, 1 = Acknowledge
number of decimal points to display.
Example: Current values are stored as 32 bit numbers with three
F084
decimal places and base units in Amps. If the retrieved value is
ENUMERATION: SELECTOR POWER UP
12345.678 A and the display scale equals 0x0302 then the dis-
played value on the unit is 12.35 kA. 0 = Restore, 1 = Synchronize, 2 = Sync/Restore

F040 F086
UR_UINT48 48-BIT UNSIGNED INTEGER ENUMERATION: DIGITAL INPUT DEFAULT STATE
0 = Off, 1 = On, 2= Latest/Off, 3 = Latest/On
F050
UR_UINT32 TIME and DATE (UNSIGNED 32 BIT INTEGER)
Gives the current time in seconds elapsed since 00:00:00 January
1, 1970.

GE Multilin B30 Bus Differential Relay B-45

 B.4 MEMORY MAPPING APPENDIX B

F090 F109
ENUMERATION: LATCHING OUTPUT TYPE ENUMERATION: CONTACT OUTPUT OPERATION
0 = Operate-dominant, 1 = Reset-dominant 0 = Self-reset, 1 = Latched, 2 = Disabled

F100 F110
ENUMERATION: VT CONNECTION TYPE ENUMERATION: CONTACT OUTPUT LED CONTROL
B 0 = Wye; 1 = Delta 0 = Trip, 1 = Alarm, 2 = None

F101 F111
ENUMERATION: MESSAGE DISPLAY INTENSITY ENUMERATION: UNDERVOLTAGE CURVE SHAPES
0 = 25%, 1 = 50%, 2 = 75%, 3 = 100% 0 = Definite Time, 1 = Inverse Time

F102 F112
ENUMERATION: DISABLED/ENABLED ENUMERATION: RS485 BAUD RATES
0 = Disabled; 1 = Enabled
bitmask value bitmask value bitmask value
0 300 4 9600 8 115200
F103 1 1200 5 19200 9 14400
ENUMERATION: CURVE SHAPES 2 2400 6 38400 10 28800
3 4800 7 57600 11 33600
bitmask curve shape bitmask curve shape
0 IEEE Mod Inv 9 IAC Inverse
1 IEEE Very Inv 10 IAC Short Inv F113
2 IEEE Ext Inv 11 I2t ENUMERATION: PARITY
3 IEC Curve A 12 Definite Time 0 = None, 1 = Odd, 2 = Even
4 IEC Curve B 13 FlexCurve™ A
5 IEC Curve C 14 FlexCurve™ B
F114
6 IEC Short Inv 15 FlexCurve™ C
ENUMERATION: IRIG-B SIGNAL TYPE
7 IAC Ext Inv 16 FlexCurve™ D
0 = None, 1 = DC Shift, 2 = Amplitude Modulated
8 IAC Very Inv

F116
F104
ENUMERATION: NEUTRAL OVERVOLTAGE CURVES
ENUMERATION: RESET TYPE
0 = Definite Time, 1 = FlexCurve™ A, 2 = FlexCurve™ B,
0 = Instantaneous, 1 = Timed, 2 = Linear
3 = FlexCurve™ C

F105
F117
ENUMERATION: LOGIC INPUT
ENUMERATION: NUMBER OF OSCILLOGRAPHY RECORDS
0 = Disabled, 1 = Input 1, 2 = Input 2
0 = 1×72 cycles, 1 = 3×36 cycles, 2 = 7×18 cycles, 3 = 15×9 cycles

F106
F118
ENUMERATION: PHASE ROTATION
ENUMERATION: OSCILLOGRAPHY MODE
0 = ABC, 1 = ACB
0 = Automatic Overwrite, 1 = Protected

F108
ENUMERATION: OFF/ON
0 = Off, 1 = On

B-46 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

bitmask element
F119
33 Neutral Instantaneous Overcurrent 2
ENUMERATION: FLEXCURVE™ PICKUP RATIOS
34 Neutral Instantaneous Overcurrent 3
mask value mask value mask value mask value 35 Neutral Instantaneous Overcurrent 4
0 0.00 30 0.88 60 2.90 90 5.90 36 Neutral Instantaneous Overcurrent 5
1 0.05 31 0.90 61 3.00 91 6.00 37 Neutral Instantaneous Overcurrent 6
2 0.10 32 0.91 62 3.10 92 6.50 48 Neutral Time Overcurrent 1
3 0.15 33 0.92 63 3.20 93 7.00 49 Neutral Time Overcurrent 2 B
4 0.20 34 0.93 64 3.30 94 7.50 50 Neutral Time Overcurrent 3
5 0.25 35 0.94 65 3.40 95 8.00 51 Neutral Time Overcurrent 4
6 0.30 36 0.95 66 3.50 96 8.50 64 Ground Instantaneous Overcurrent 1
7 0.35 37 0.96 67 3.60 97 9.00 65 Ground Instantaneous Overcurrent 2
8 0.40 38 0.97 68 3.70 98 9.50 66 Ground Instantaneous Overcurrent 3
9 0.45 39 0.98 69 3.80 99 10.00 67 Ground Instantaneous Overcurrent 4
10 0.48 40 1.03 70 3.90 100 10.50 68 Ground Instantaneous Overcurrent 5
11 0.50 41 1.05 71 4.00 101 11.00 69 Ground Instantaneous Overcurrent 6
12 0.52 42 1.10 72 4.10 102 11.50 80 Ground Time Overcurrent 1
13 0.54 43 1.20 73 4.20 103 12.00 81 Ground Time Overcurrent 2
14 0.56 44 1.30 74 4.30 104 12.50 82 Ground Time Overcurrent 3
15 0.58 45 1.40 75 4.40 105 13.00 83 Ground Time Overcurrent 4
16 0.60 46 1.50 76 4.50 106 13.50 84 Ground Time Overcurrent 5
17 0.62 47 1.60 77 4.60 107 14.00 85 Ground Time Overcurrent 6
18 0.64 48 1.70 78 4.70 108 14.50 133 Bus Zone 1
19 0.66 49 1.80 79 4.80 109 15.00 144 Phase Undervoltage 1
20 0.68 50 1.90 80 4.90 110 15.50 145 Phase Undervoltage 2
21 0.70 51 2.00 81 5.00 111 16.00 148 Auxiliary Overvoltage 1
22 0.72 52 2.10 82 5.10 112 16.50 156 Neutral Overvoltage 1
23 0.74 53 2.20 83 5.20 113 17.00 180 Load Enchroachment
24 0.76 54 2.30 84 5.30 114 17.50 190 Power Swing Detect
25 0.78 55 2.40 85 5.40 115 18.00 251 CT Trouble 1
26 0.80 56 2.50 86 5.50 116 18.50 280 Breaker Failure 1
27 0.82 57 2.60 87 5.60 117 19.00 281 Breaker Failure 2
28 0.84 58 2.70 88 5.70 118 19.50 280 Breaker Failure 3
29 0.86 59 2.80 89 5.80 119 20.00 281 Breaker Failure 4
280 Breaker Failure 5
281 Breaker Failure 6
F122
336 Setting Group
ENUMERATION: ELEMENT INPUT SIGNAL TYPE
337 Reset
0 = Phasor, 1 = RMS 385 Selector 1
386 Selector 2

F123 390 Control Pushbutton 1

ENUMERATION: CT SECONDARY 391 Control Pushbutton 2
392 Control Pushbutton 3
0 = 1 A, 1 = 5 A
393 Control Pushbutton 4
394 Control Pushbutton 5
F124 395 Control Pushbutton 6
ENUMERATION: LIST OF ELEMENTS
396 Control Pushbutton 7
400 FlexElement™ 1
bitmask element
401 FlexElement™ 2
16 Phase Time Overcurrent 1
402 FlexElement™ 3
17 Phase Time Overcurrent 2
403 FlexElement™ 4
24 Phase Directional Overcurrent 1
404 FlexElement™ 5
25 Phase Directional Overcurrent 2
405 FlexElement™ 6
32 Neutral Instantaneous Overcurrent 1
406 FlexElement™ 7

GE Multilin B30 Bus Differential Relay B-47

 B.4 MEMORY MAPPING APPENDIX B

bitmask element bitmask element

407 FlexElement™ 8 707 Digital Element 16
420 Non-volatile Latch 1 708 Digital Element 17
421 Non-volatile Latch 2 709 Digital Element 18
422 Non-volatile Latch 3 710 Digital Element 19
423 Non-volatile Latch 4 711 Digital Element 20
424 Non-volatile Latch 5 712 Digital Element 21
B 425 Non-volatile Latch 6 713 Digital Element 22
426 Non-volatile Latch 7 714 Digital Element 23
427 Non-volatile Latch 8 715 Digital Element 24
428 Non-volatile Latch 9 716 Digital Element 25
429 Non-volatile Latch 10 717 Digital Element 26
430 Non-volatile Latch 11 718 Digital Element 27
431 Non-volatile Latch 12 719 Digital Element 28
432 Non-volatile Latch 13 720 Digital Element 29
433 Non-volatile Latch 14 721 Digital Element 30
434 Non-volatile Latch 15 722 Digital Element 31
435 Non-volatile Latch 16 723 Digital Element 32
544 Digital Counter 1 724 Digital Element 33
545 Digital Counter 2 725 Digital Element 34
546 Digital Counter 3 726 Digital Element 35
547 Digital Counter 4 727 Digital Element 36
548 Digital Counter 5 728 Digital Element 37
549 Digital Counter 6 729 Digital Element 38
550 Digital Counter 7 730 Digital Element 39
551 Digital Counter 8 731 Digital Element 40
680 User-Programmable Pushbutton 1 732 Digital Element 41
681 User-Programmable Pushbutton 2 733 Digital Element 42
682 User-Programmable Pushbutton 3 734 Digital Element 43
683 User-Programmable Pushbutton 4 735 Digital Element 44
684 User-Programmable Pushbutton 5 736 Digital Element 45
685 User-Programmable Pushbutton 6 737 Digital Element 46
686 User-Programmable Pushbutton 7 738 Digital Element 47
687 User-Programmable Pushbutton 8 739 Digital Element 48
688 User-Programmable Pushbutton 9
689 User-Programmable Pushbutton 10
F125
690 User-Programmable Pushbutton 11
ENUMERATION: ACCESS LEVEL
691 User-Programmable Pushbutton 12
0 = Restricted; 1 = Command, 2 = Setting, 3 = Factory Service
692 Digital Element 1
693 Digital Element 2
694 Digital Element 3 F126
695 Digital Element 4 ENUMERATION: NO/YES CHOICE
696 Digital Element 5 0 = No, 1 = Yes
697 Digital Element 6
698 Digital Element 7
F127
699 Digital Element 8
ENUMERATION: LATCHED OR SELF-RESETTING
700 Digital Element 9
701 Digital Element 10 0 = Latched, 1 = Self-Reset
702 Digital Element 11
703 Digital Element 12 F128
704 Digital Element 13 ENUMERATION: CONTACT INPUT THRESHOLD
705 Digital Element 14
0 = 17 V DC, 1 = 33 V DC, 2 = 84 V DC, 3 = 166 V DC
706 Digital Element 15

B-48 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

bitmask error
F129
5 Unit Not Calibrated
ENUMERATION: FLEXLOGIC TIMER TYPE
9 Prototype Firmware
0 = millisecond, 1 = second, 2 = minute 10 Flexlogic Error Token
11 Equipment Mismatch

F130 13 Unit Not Programmed

ENUMERATION: SIMULATION MODE 14 System Exception

0 = Off. 1 = Pre-Fault, 2 = Fault, 3 = Post-Fault 15 Latching Out Error B

18 SNTP Failure
19 Battery Failure
F131 20 Primary Ethernet Failure
ENUMERATION: FORCED CONTACT OUTPUT STATE
21 Secondary Ethernet Failure
0 = Disabled, 1 = Energized, 2 = De-energized, 3 = Freeze 22 EEPROM Data Error
23 SRAM Data Error
24 Program Memory
F133
ENUMERATION: PROGRAM STATE 25 Watchdog Error
26 Low On Memory
0 = Not Programmed, 1 = Programmed
27 Remote Device Off
28 Direct Device Off
F134 29 Direct Ring Break
ENUMERATION: PASS/FAIL 30 Any Minor Error
0 = Fail, 1 = OK, 2 = n/a 31 Any Major Error

F135 F142
ENUMERATION: GAIN CALIBRATION ENUMERATION: EVENT RECORDER ACCESS FILE TYPE

0 = 0x1, 1 = 1x16 0 = All Record Data, 1 = Headers Only, 2 = Numeric Event Cause

F136 F143
ENUMERATION: NUMBER OF OSCILLOGRAPHY RECORDS UR_UINT32: 32 BIT ERROR CODE (F141 specifies bit number)

0 = 31 x 8 cycles, 1 = 15 x 16 cycles, 2 = 7 x 32 cycles A bit value of 0 = no error, 1 = error

3 = 3 x 64 cycles, 4 = 1 x 128 cycles

F144
F138 ENUMERATION: FORCED CONTACT INPUT STATE
ENUMERATION: OSCILLOGRAPHY FILE TYPE 0 = Disabled, 1 = Open, 2 = Closed
0 = Data File, 1 = Configuration File, 2 = Header File

F145
F140 ENUMERATION: ALPHABET LETTER
ENUMERATION: CURRENT, SENS CURRENT, VOLTAGE,
DISABLED bitmask type bitmask type bitmask type bitmask type
0 null 7 G 14 N 21 U
0 = Disabled, 1 = Current 46 A, 2 = Voltage 280 V,
3 = Current 4.6 A, 4 = Current 2 A, 5 = Notched 4.6 A, 1 A 8 H 15 O 22 V
6 = Notched 2 A 2 B 9 I 16 P 23 W
3 C 10 J 17 Q 24 X
4 D 11 K 18 R 25 Y
F141
5 E 12 L 19 S 26 Z
ENUMERATION: SELF TEST ERROR
6 F 13 M 20 T
bitmask error
0 Any Self Tests
1 IRIG-B Failure
2 DSP Error
4 No DSP Interrupts

GE Multilin B30 Bus Differential Relay B-49

 B.4 MEMORY MAPPING APPENDIX B

F146 F155
ENUMERATION: MISCELLANEOUS EVENT CAUSES ENUMERATION: REMOTE DEVICE STATE
0 = Offline, 1 = Online
bitmask definition
0 Events Cleared
1 Oscillography Triggered F156
ENUMERATION: REMOTE INPUT BIT PAIRS
B
2 Date/time Changed
3 Default Settings Loaded
bitmask value bitmask value bitmask value
4 Test Mode On
0 NONE 22 DNA-22 44 UserSt-12
5 Test Mode Off
1 DNA-1 23 DNA-23 45 UserSt-13
6 Power On
2 DNA-2 24 DNA-24 46 UserSt-14
7 Power Off
3 DNA-3 25 DNA-25 47 UserSt-15
8 Relay In Service
4 DNA-4 26 DNA-26 48 UserSt-16
9 Relay Out Of Service
5 DNA-5 27 DNA-27 49 UserSt-17
10 Watchdog Reset
6 DNA-6 28 DNA-28 50 UserSt-18
11 Oscillography Clear
7 DNA-7 29 DNA-29 51 UserSt-19
12 Reboot Command
8 DNA-8 30 DNA-30 52 UserSt-20
13 Led Test Initiated
9 DNA-9 31 DNA-31 53 UserSt-21
14 Flash Programming
10 DNA-10 32 DNA-32 54 UserSt-22
15 Fault Report Trigger
11 DNA-11 33 UserSt-1 55 UserSt-23
16 User Programmable Fault Report Trigger
12 DNA-12 34 UserSt-2 56 UserSt-24
17 Corrupt DSP Program
13 DNA-13 35 UserSt-3 57 UserSt-25
18 Reload DSP Settings
14 DNA-14 36 UserSt-4 58 UserSt-26
15 DNA-15 37 UserSt-5 59 UserSt-27
F151 16 DNA-16 38 UserSt-6 60 UserSt-28
ENUMERATION: RTD SELECTION 17 DNA-17 39 UserSt-7 61 UserSt-29
bitmask RTD# bitmask RTD# bitmask RTD# 18 DNA-18 40 UserSt-8 62 UserSt-30
0 NONE 17 RTD 17 33 RTD 33 19 DNA-19 41 UserSt-9 63 UserSt-31
1 RTD 1 18 RTD 18 34 RTD 34 20 DNA-20 42 UserSt-10 64 UserSt-32
2 RTD 2 19 RTD 19 35 RTD 35 21 DNA-21 43 UserSt-11
3 RTD 3 20 RTD 20 36 RTD 36
4 RTD 4 21 RTD 21 37 RTD 37
F166
5 RTD 5 22 RTD 22 38 RTD 38
ENUMERATION: AUXILIARY VT CONNECTION TYPE
6 RTD 6 23 RTD 23 39 RTD 39
0 = Vn, 1 = Vag, 2 = Vbg, 3 = Vcg, 4 = Vab, 5 = Vbc, 6 = Vca
7 RTD 7 24 RTD 24 40 RTD 40
8 RTD 8 25 RTD 25 41 RTD 41
9 RTD 9 26 RTD 26 42 RTD 42 F167
10 RTD 10 27 RTD 27 43 RTD 43 ENUMERATION: SIGNAL SOURCE
11 RTD 11 28 RTD 28 44 RTD 44 0 = SRC 1, 1 = SRC 2, 2 = SRC 3, 3 = SRC 4,
12 RTD 12 29 RTD 29 45 RTD 45 4 = SRC 5, 5 = SRC 6
13 RTD 13 30 RTD 30 46 RTD 46
14 RTD 14 31 RTD 31 47 RTD 47
F168
15 RTD 15 32 RTD 32 48 RTD 48
ENUMERATION: INRUSH INHIBIT FUNCTION
16 RTD 16
0 = Disabled, 1 = Adapt. 2nd, 2 = Trad. 2nd

F152
F170
ENUMERATION: SETTING GROUP
ENUMERATION: LOW/HIGH OFFSET and GAIN
0 = Active Group, 1 = Group 1, 2 = Group 2, 3 = Group 3 TRANSDUCER INPUT/OUTPUT SELECTION
4 = Group 4, 5 = Group 5, 6 = Group 6
0 = LOW, 1 = HIGH

B-50 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

F171 F183
ENUMERATION: TRANSDUCER CHANNEL INPUT TYPE ENUMERATION: AC INPUT WAVEFORMS
0 = dcmA IN, 1 = Ohms IN, 2 = RTD IN, 3 = dcmA OUT bitmask definition
0 Off
1 8 samples/cycle
F172
2 16 samples/cycle
ENUMERATION: SLOT LETTERS

bitmask slot bitmask slot bitmask slot bitmask slot

3
4
32 samples/cycle
64 samples/cycle
B
0 F 4 K 8 P 12 U
1 G 5 L 9 R 13 V
2 H 6 M 10 S 14 W F185
ENUMERATION: PHASE A,B,C, GROUND SELECTOR
3 J 7 N 11 T 15 X
0 = A, 1 = B, 2 = C, 3 = G

F173
ENUMERATION: DCMA INPUT/OUTPUT RANGE F186
ENUMERATION: MEASUREMENT MODE
bitmask dcmA input/output range
0 = Phase to Ground, 1 = Phase to Phase
0 0 to –1 mA
1 0 to 1 mA
2 –1 to 1 mA F190
3 0 to 5 mA ENUMERATION: SIMULATED KEYPRESS
4 0 to 10 mA
bitmsk keypress bitmsk keypress
5 0 to 20 mA
0 --- 21 Escape
6 4 to 20 mA use between real keys
22 Enter
1 1 23 Reset

F174 2 2 24 User 1
ENUMERATION: TRANSDUCER RTD INPUT TYPE 3 3 25 User 2
4 4 26 User 3
0 = 100 Ohm Platinum, 1 = 120 Ohm Nickel,
2 = 100 Ohm Nickel, 3 = 10 Ohm Copper 5 5 27 User-programmable key 1
6 6 28 User-programmable key 2
7 7 29 User-programmable key 3
F175
8 8 30 User-programmable key 4
ENUMERATION: PHASE LETTERS
9 9 31 User-programmable key 5
0 = A, 1 = B, 2 = C 10 0 32 User-programmable key 6
11 Decimal Pt 33 User-programmable key 7

F177 12 Plus/Minus 34 User-programmable key 8

ENUMERATION: COMMUNICATION PORT 13 Value Up 35 User-programmable key 9
14 Value Down 36 User-programmable key 10
0 = None, 1 = COM1-RS485, 2 = COM2-RS485,
3 = Front Panel-RS232, 4 = Network - TCP, 5 = Network - UDP 15 Message Up 37 User-programmable key 11
16 Message Down 38 User-programmable key 12
17 Message Left 39 User 4 (control pushbutton)
F180
18 Message Right 40 User 5 (control pushbutton)
ENUMERATION: PHASE/GROUND
19 Menu 41 User 6 (control pushbutton)
0 = PHASE, 1 = GROUND 20 Help 42 User 7 (control pushbutton)

F181
F192
ENUMERATION: ODD/EVEN/NONE
ENUMERATION: ETHERNET OPERATION MODE
0 = ODD, 1 = EVEN, 2 = NONE
0 = Half-Duplex, 1 = Full-Duplex

GE Multilin B30 Bus Differential Relay B-51

 B.4 MEMORY MAPPING APPENDIX B

F194 F227
ENUMERATION: DNP SCALE ENUMERATION: RELAY SERVICE STATUS
A bitmask of 0 = 0.01, 1 = 0.1, 2 = 1, 3 = 10, 4 = 100, 5 = 1000, 0 = Unknown, 1 = Relay In Service, 2 = Relay Out Of Service
6 = 10000, 7 = 100000, 8 = 0.001

F300
F199 UR_UINT16: FLEXLOGIC™ BASE TYPE (6-bit type)
B ENUMERATION: DISABLED/ENABLED/CUSTOM
The FlexLogic™ BASE type is 6 bits and is combined with a 9 bit
0 = Disabled, 1 = Enabled, 2 = Custom descriptor and 1 bit for protection element to form a 16 bit value.
The combined bits are of the form: PTTTTTTDDDDDDDDD,
where P bit if set, indicates that the FlexLogic™ type is associated
F200 with a protection element state and T represents bits for the BASE
TEXT40: 40-CHARACTER ASCII TEXT type, and D represents bits for the descriptor.
20 registers, 16 Bits: 1st Char MSB, 2nd Char. LSB The values in square brackets indicate the base type with P prefix
[PTTTTTT] and the values in round brackets indicate the descrip-
tor range.
F201 [0] Off(0) – this is boolean FALSE value
TEXT8: 8-CHARACTER ASCII PASSCODE [0] On (1) – this is boolean TRUE value
4 registers, 16 Bits: 1st Char MSB, 2nd Char. LSB [2] CONTACT INPUTS (1 to 96)
[3] CONTACT INPUTS OFF (1 to 96)
[4] VIRTUAL INPUTS (1 to 64)
F202 [6] VIRTUAL OUTPUTS (1 to 96)
TEXT20: 20-CHARACTER ASCII TEXT [10] CONTACT OUTPUTS VOLTAGE DETECTED (1 to 64)
[11] CONTACT OUTPUTS VOLTAGE OFF DETECTED (1 to 64)
10 registers, 16 Bits: 1st Char MSB, 2nd Char. LSB [12] CONTACT OUTPUTS CURRENT DETECTED (1 to 64)
[13] CONTACT OUTPUTS CURRENT OFF DETECTED (1 to 64)
[14] REMOTE INPUTS (1 to 32)
F203 [28] INSERT (via keypad only)
TEXT16: 16-CHARACTER ASCII TEXT [32] END
[34] NOT (1 INPUT)
[36] 2 INPUT XOR (0)
F204 [38] LATCH SET/RESET (2 inputs)
TEXT80: 80-CHARACTER ASCII TEXT [40] OR (2 to 16 inputs)
[42] AND (2 to 16 inputs)
[44] NOR (2 to 16 inputs)
F205 [46] NAND (2 to 16 inputs)
TEXT12: 12-CHARACTER ASCII TEXT [48] TIMER (1 to 32)
[50] ASSIGN VIRTUAL OUTPUT (1 to 96)
[52] SELF-TEST ERROR (see F141 for range)
F206 [56] ACTIVE SETTING GROUP (1 to 6)
TEXT6: 6-CHARACTER ASCII TEXT [62] MISCELLANEOUS EVENTS (see F146 for range)
[64 to 127] ELEMENT STATES

F207
TEXT4: 4-CHARACTER ASCII TEXT F400
UR_UINT16: CT/VT BANK SELECTION

F208 bitmask bank selection

TEXT2: 2-CHARACTER ASCII TEXT 0 Card 1 Contact 1 to 4
1 Card 1 Contact 5 to 8
2 Card 2 Contact 1 to 4
F222
3 Card 2 Contact 5 to 8
ENUMERATION: TEST ENUMERATION
4 Card 3 Contact 1 to 4
0 = Test Enumeration 0, 1 = Test Enumeration 1
5 Card 3 Contact 5 to 8

F226
ENUMERATION: REMOTE INPUT/OUTPUT TRANSFER
METHOD
0 = None, 1 = GSSE, 2 = GOOSE

B-52 B30 Bus Differential Relay GE Multilin

 APPENDIX B B.4 MEMORY MAPPING

F500 F509
UR_UINT16: PACKED BITFIELD BITFIELD: SIMPLE ELEMENT STATE
First register indicates input/output state with bits 0 (MSB) to 15 0 = Operate
(LSB) corresponding to input/output state 1 to 16. The second reg-
ister indicates input/output state with bits 0 to 15 corresponding to
input/output state 17 to 32 (if required) The third register indicates F511
input/output state with bits 0 to 15 corresponding to input/output BITFIELD: 3-PHASE SIMPLE ELEMENT STATE
state 33 to 48 (if required). The fourth register indicates input/out-
put state with bits 0 to 15 corresponding to input/output state 49 to
0 = Operate, 1 = Operate A, 2 = Operate B, 3 = Operate C B
64 (if required).
The number of registers required is determined by the specific F515
data item. A bit value of 0 = Off and 1 = On. ENUMERATION ELEMENT INPUT MODE
0 = Signed, 1 = Absolute
F501
UR_UINT16: LED STATUS
F516
Low byte of register indicates LED status with bit 0 representing ENUMERATION ELEMENT COMPARE MODE
the top LED and bit 7 the bottom LED. A bit value of 1 indicates
0 = Level, 1 = Delta
the LED is on, 0 indicates the LED is off.

F518
F502
BITFIELD: ELEMENT OPERATE STATES ENUMERATION: FLEXELEMENT™ UNITS
0 = Milliseconds, 1 = Seconds, 2 = Minutes
Each bit contains the operate state for an element. See the F124
format code for a list of element IDs. The operate bit for element ID
X is bit [X mod 16] in register [X/16].
F519
ENUMERATION: NON-VOLATILE LATCH
F504 0 = Reset-Dominant, 1 = Set-Dominant
BITFIELD: 3-PHASE ELEMENT STATE
bitmask element state
F522
0 Pickup
ENUMERATION: TRANSDUCER DCMA OUTPUT RANGE
1 Operate
0 = –1 to 1 mA; 1 = 0 to 1 mA; 2 = 4 to 20 mA
2 Pickup Phase A
3 Pickup Phase B
4 Pickup Phase C F523
5 Operate Phase A ENUMERATION: DNP OBJECTS 20, 22, AND 23 DEFAULT
6 Operate Phase B VARIATION
7 Operate Phase C
bitmask default variation
0 1

F505 1 2
BITFIELD: CONTACT OUTPUT STATE 2 5
3 6
0 = Contact State, 1 = Voltage Detected, 2 = Current Detected

F524
F506|
ENUMERATION: DNP OBJECT 21 DEFAULT VARIATION
BITFIELD: 1 PHASE ELEMENT STATE
0 = Pickup, 1 = Operate bitmask Default Variation
0 1
1 2
F507
2 9
BITFIELD: COUNTER ELEMENT STATE
3 10
0 = Count Greater Than, 1 = Count Equal To, 2 = Count Less Than

GE Multilin B30 Bus Differential Relay B-53

 B.4 MEMORY MAPPING APPENDIX B

F525
ENUMERATION: DNP OBJECT 32 DEFAULT VARIATION

bitmask default variation

0 1
1 2

B
2 3
3 4
4 5
5 7

F530
ENUMERATION: FRONT PANEL INTERFACE KEYPRESS
bitmask keypress bitmask keypress
0 None 22 Value Down
1 Menu 23 Reset
2 Message Up 24 User 1
3 7 ~
25 User 2
4 8 26 User 3
5 9 31 User PB 1
6 Help 32 User PB 2
7 Message Left 33 User PB 3
8 4 34 User PB 4
9 5 35 User PB 5
10 6 36 User PB 6
11 Escape 37 User PB 7
12 Message Right 38 User PB 8
13 1 39 User PB 9
14 2 40 User PB 10
15 3 41 User PB 11
16 Enter 42 User PB 12
17 Message Down 44 User 4
18 0 45 User 5
19 Decimal 46 User 6
20 +/– 47 User 7
21 Value Up

F531
ENUMERATION: LANGUAGE
0 = English, 1 = French, 2 = Chinese, 3 = Russian

F600
UR_UINT16: FLEXANALOG PARAMETER
Corresponds to the modbus address of the value used when this parameter is selected. Only certain values may be used as FlexAnalogs
(basically all metering quantities used in protection).

B-54 B30 Bus Differential Relay GE Multilin

 APPENDIX C C.1 INTRODUCTION

APPENDIX C IEC 61850 COMMUNICATIONSC.1INTRODUCTION C.1.1 OVERVIEW

The IEC 61850 standard is the result of years of work by electric utilities and vendors of electronic equipment to produce
standardized communications systems. IEC 61850 is a series of standards describing client/server and peer-to-peer com-
munications, substation design and configuration, testing, environmental and project standards. The complete set includes:
• IEC 61850-1: Introduction and overview
• IEC 61850-2: Glossary
• IEC 61850-3: General requirements
• IEC 61850-4: System and project management
• IEC 61850-5: Communications and requirements for functions and device models
•
•
IEC 61850-6: Configuration description language for communication in electrical substations related to IEDs
IEC 61850-7-1: Basic communication structure for substation and feeder equipment - Principles and models
C
• IEC 61850-7-2: Basic communication structure for substation and feeder equipment - Abstract communication service
interface (ACSI)
• IEC 61850-7-3: Basic communication structure for substation and feeder equipment – Common data classes
• IEC 61850-7-4: Basic communication structure for substation and feeder equipment – Compatible logical node classes
and data classes
• IEC 61850-8-1: Specific Communication Service Mapping (SCSM) – Mappings to MMS (ISO 9506-1 and ISO 9506-2)
and to ISO/IEC 8802-3
• IEC 61850-9-1: Specific Communication Service Mapping (SCSM) – Sampled values over serial unidirectional multi-
drop point to point link
• IEC 61850-9-2: Specific Communication Service Mapping (SCSM) – Sampled values over ISO/IEC 8802-3
• IEC 61850-10: Conformance testing
These documents can be obtained from the IEC (http://www.iec.ch). It is strongly recommended that all those involved with
any IEC 61850 implementation obtain this document set.

C.1.2 COMMUNICATION PROFILES

The B30 relay supports IEC 61850 server services over both TCP/IP and TP4/CLNP (OSI) communication protocol stacks.
The TP4/CLNP profile requires the B30 to have a network address or Network Service Access Point (NSAP) to establish a
communication link. The TCP/IP profile requires the B30 to have an IP address to establish communications. These
addresses are located in the SETTINGS PRODUCT SETUP COMMUNICATIONS NETWORK menu. Note that the B30
supports IEC 61850 over the TP4/CLNP or TCP/IP stacks, and also operation over both stacks simultaneously. It is possi-
ble to have up to four simultaneous connections (in addition to DNP and Modbus/TCP (non-IEC 61850) connections).

C.1.3 MMS PROTOCOL

IEC 61850 specifies the use of the Manufacturing Message Specification (MMS) at the upper (application) layer for transfer
of real-time data. This protocol has been in existence for a number of years and provides a set of services suitable for the
transfer of data within a substation LAN environment. Actual MMS protocol services are mapped to IEC 61850 abstract ser-
vices in IEC 61850-8-1.

C.1.4 PEER-TO-PEER COMMUNICATION

Peer-to-peer communication of digital state information (remote inputs/outputs) is supported using the IEC 61850 GSSE
and GOOSE services. This feature allows digital points to be exchanged between IEC 61850 conforming devices.

C.1.5 FILE SERVICES

MMS file services are supported to allow transfer of oscillography, event record, or other files from a B30 relay.

GE Multilin B30 Bus Differential Relay C-1

 C.1 INTRODUCTION APPENDIX C

C.1.6 COMMUNICATION SOFTWARE UTILITIES

The exact structure and values of the supported IEC 61850 logical nodes can be seen by connecting to a B30 relay with an
MMS browser, such as the “MMS Object Explorer and AXS4-MMS” DDE/OPC server from Sisco Inc.

C.1.7 NON-IEC 61850 DATA

The B30 relay makes available a number of non-IEC 61850 data items. These data items can be accessed through the
“UR” MMS domain. IEC 61850 data can be accessed through the “IECDevice” MMS domain (IEC 61850 logical device).

C.1.8 TCP CONNECTION TIMING

C A built-in TCP/IP connection timeout of two minutes is employed by the B30 to detect ‘dead’ connections. If there is no data
traffic on a TCP connection for greater than two minutes, the connection will be aborted by the B30. This frees up the con-
nection to be used by other clients. Therefore, when using IEC 61850 reporting, clients should configure report control
block items such that an integrity report will be issued at least every 2 minutes (120000 ms). This ensures that the B30 will
not abort the connection. If other MMS data is being polled on the same connection at least once every 2 minutes, this tim-
eout will not apply.

C.1.9 LOGICAL NODE MMXU DATA MAPPING

The mapping of B30 relay data to IEC 61850 MMXU data is performed on a per-source basis. MMXU1 data originates from
B30 source 1, MMXU2 data originates from B30 source 2, etc.

C.1.10 LOGICAL NODE GGIO DATA MAPPING

Logical node GGIO1 data is mapped using the B30 Flexstate parameters. Each single point indication in GGIO1 can be
selected using the corresponding Flexstate parameter setting. For example, the value of GGIO1 point “Ind3” is determined
from the FlexLogic™ operand selected in the Flexstate parameter 3 setting. Thus, GGIO1 data can originate as any Flex-
Logic™ parameter.
Logical node GGIO2 data is mapped to the B30 virtual inputs. Each single point control in GGIO2 is mapped to a virtual
input. For example, GGIO2 control point SPCSO3 is mapped to virtual input 3.

C.1.11 OTHER LOGICAL NODE MAPPING

All other IEC 61850 logical nodes (with the exception of PTRC) are associated with standard UR-series relay protection
elements and features. The following mapping is used (for applicable elements):
• PDIF: bus differential
• PIOC: phase instantaneous overcurrent, neutral instantaneous overcurrent, ground instantaneous overcurrent, nega-
tive sequence instantaneous overcurrent
• PTOC: phase time overcurrent, neutral time overcurrent, ground time overcurrent, negative sequence time overcur-
rent, neutral directional overcurrent, negative sequence directional overcurrent
• PTUV: phase undervoltage, auxiliary undervoltage, third harmonic neutral undervoltage
• PTOV: phase overvoltage, neutral overvoltage, auxiliary overvoltage, negative sequence overvoltage
• RBRF: breaker failure

C-2 B30 Bus Differential Relay GE Multilin

 APPENDIX C C.2 ACSI CONFORMANCE

C.2ACSI CONFORMANCE C.2.1 ACSI BASIC CONFORMANCE STATEMENT

SERVICES SERVER/ UR-FAMILY

PUBLISHER
CLIENT-SERVER ROLES
B11 Server side (of two-party application-association) c1 Yes
B12 Client side (of two-party application-association) ---
SCSMS SUPPORTED
B21 SCSM: IEC 61850-8-1 used Yes
B22 SCSM: IEC 61850-9-1 used
B23 SCSM: IEC 61850-9-2 used
B24 SCSM: other C
GENERIC SUBSTATION EVENT MODEL (GSE)
B31 Publisher side O Yes
B32 Subscriber side --- Yes
TRANSMISSION OF SAMPLED VALUE MODEL (SVC)
B41 Publisher side O
B42 Subscriber side ---

c1: shall be "M" if support for LOGICAL-DEVICE model has been declared
O: Optional
NOTE
M: Mandatory

C.2.2 ACSI MODELS CONFORMANCE STATEMENT

SERVICES SERVER/ UR-FAMILY

PUBLISHER
IF SERVER SIDE (B11) SUPPORTED
M1 Logical device c2 Yes
M2 Logical node c3 Yes
M3 Data c4 Yes
M4 Data set c5 Yes
M5 Substitution O
M6 Setting group control O
REPORTING
M7 Buffered report control O Yes
M7-1 sequence-number
M7-2 report-time-stamp
M7-3 reason-for-inclusion
M7-4 data-set-name
M7-5 data-reference
M7-6 buffer-overflow
M7-7 entryID
M7-8 BufTm
M7-9 IntgPd
M7-10 GI
M8 Unbuffered report control O Yes
M8-1 sequence-number
M8-2 report-time-stamp
M8-3 reason-for-inclusion

GE Multilin B30 Bus Differential Relay C-3

 C.2 ACSI CONFORMANCE APPENDIX C

SERVICES SERVER/ UR-FAMILY

PUBLISHER
M8-4 data-set-name
M8-5 data-reference
M8-6 BufTm
M8-7 IntgPd
M8-8 GI
Logging O
M9 Log control O
M9-1 IntgPd
M10 Log O
M11 Control M Yes
C IF GSE (B31/32) IS SUPPORTED
GOOSE O Yes
M12-1 entryID
M12-2 DataReflnc
M13 GSSE O Yes
IF SVC (B41/B42) IS SUPPORTED
M14 Multicast SVC O
M15 Unicast SVC O
M16 Time M Yes
M17 File transfer O Yes

c2: shall be "M" if support for LOGICAL-NODE model has been declared
c3: shall be "M" if support for DATA model has been declared
NOTE
c4: shall be "M" if support for DATA-SET, Substitution, Report, Log Control, or Time models has been declared
c5: shall be "M" if support for Report, GSE, or SMV models has been declared
M: Mandatory

C.2.3 ACSI SERVICES CONFORMANCE STATEMENT

In the table below, the acronym AA refers to Application Associations (TP: Two Party / MC: Multicast). The c6 to c10 entries
are defined in the notes following the table.

SERVICES AA: TP/MC SERVER/ UR FAMILY

PUBLISHER
SERVER (CLAUSE 6)
S1 ServerDirectory TP M Yes
APPLICATION ASSOCIATION (CLAUSE 7)
S2 Associate M Yes
S3 Abort M Yes
S4 Release M Yes
LOGICAL DEVICE (CLAUSE 8)
S5 LogicalDeviceDirectory TP M Yes
LOGICAL NODE (CLAUSE 9)
S6 LogicalNodeDirectory TP M Yes
S7 GetAllDataValues TP M Yes
DATA (CLAUSE 10)
S8 GetDataValues TP M Yes
S9 SetDataValues TP O Yes
S10 GetDataDirectory TP M Yes
S11 GetDataDefinition TP M Yes

C-4 B30 Bus Differential Relay GE Multilin

 APPENDIX C C.2 ACSI CONFORMANCE

SERVICES AA: TP/MC SERVER/ UR FAMILY

PUBLISHER
DATA SET (CLAUSE 11)
S12 GetDataSetValues TP M Yes
S13 SetDataSetValues TP O
S14 CreateDataSet TP O
S15 DeleteDataSet TP O
S16 GetDataSetDirectory TP O Yes
SUBSTITUTION (CLAUSE 12)
S17 SetDataValues TP M
SETTING GROUP CONTROL (CLAUSE 13)
S18 SelectActiveSG TP O
S19 SelectEditSG TP O C
S20 SetSGValues TP O
S21 ConfirmEditSGValues TP O
S22 GetSGValues TP O
S23 GetSGCBValues TP O
REPORTING (CLAUSE 14)
BUFFERED REPORT CONTROL BLOCK (BRCB)
S24 Report TP c6 Yes
S24-1 data-change (dchg) Yes
S24-2 qchg-change (qchg)
S24-3 data-update (dupd)
S25 GetBRCBValues TP c6 Yes
S26 SetBRCBValues TP c6 Yes
UNBUFFERED REPORT CONTROL BLOCK (URCB)
S27 Report TP c6 Yes
S27-1 data-change (dchg) Yes
S27-2 qchg-change (qchg)
S27-3 data-update (dupd)
S28 GetURCBValues TP c6 Yes
S29 SetURCBValues TP c6 Yes
LOGGING (CLAUSE 14)
LOG CONTROL BLOCK
S30 GetLCBValues TP M
S31 SetLCBValues TP M
LOG
S32 QueryLogByTime TP M
S33 QueryLogByEntry TP M
S34 GetLogStatusValues TP M
GENERIC SUBSTATION EVENT MODEL (GSE) (CLAUSE 14.3.5.3.4)
GOOSE-CONTROL-BLOCK
S35 SendGOOSEMessage MC c8 Yes
S36 GetReference TP c9
S37 GetGOOSEElementNumber TP c9
S38 GetGoCBValues TP O Yes
S39 SetGoCBValues TP O Yes
GSSE-CONTROL-BLOCK
S40 SendGSSEMessage MC c8 Yes
S41 GetReference TP c9

GE Multilin B30 Bus Differential Relay C-5

 C.2 ACSI CONFORMANCE APPENDIX C

SERVICES AA: TP/MC SERVER/ UR FAMILY

PUBLISHER
S42 GetGSSEElementNumber TP c9
S43 GetGsCBValues TP O Yes
S44 SetGsCBValues TP O Yes
TRANSMISSION OF SAMPLE VALUE MODEL (SVC) (CLAUSE 16)
MULTICAST SVC
S45 SendMSVMessage MC c10
S46 GetMSVCBValues TP O
S47 SetMSVCBValues TP O
UNICAST SVC
S48 SendUSVMessage MC c10
C S49 GetUSVCBValues TP O
S50 SetUSVCBValues TP O
CONTROL (CLAUSE 16.4.8)
S51 Select O Yes
S52 SelectWithValue TP O
S53 Cancel TP O Yes
S54 Operate TP M Yes
S55 Command-Termination TP O
S56 TimeActivated-Operate TP O
FILE TRANSFER (CLAUSE 20)
S57 GetFile TP M Yes
S58 SetFile TP O
S59 DeleteFile TP O
S60 GetFileAttributeValues TP M Yes
TIME (CLAUSE 5.5)
T1 Time resolution of internal clock 20
(nearest negative power of 2 in
seconds)
T2 Time accuracy of internal clock
T3 supported TimeStamp resolution 20
(nearest value of 2–n in seconds,
accoridng to 5.5.3.7.3.3)

c6: shall declare support for at least one (BRCB or URCB)

c7: shall declare support for at least one (QueryLogByTime or QueryLogAfter)
NOTE
c8: shall declare support for at least one (SendGOOSEMessage or SendGSSEMessage)
c9: shall declare support if TP association is available
c10: shall declare support for at least one (SendMSVMessage or SendUSVMessage)

C-6 B30 Bus Differential Relay GE Multilin

 APPENDIX C C.3 LOGICAL NODES

C.3LOGICAL NODES C.3.1 LOGICAL NODES TABLE

The UR-series of relays supports IEC 61850 logical nodes as indicated in the following table. Note that the actual instantia-
tion of each logical node is determined by the product order code. For example. the logical node “PDIS” (distance protec-
tion) is available only in the D60 Line Distance Relay.

NODES UR-FAMILY NODES UR-FAMILY

L: SYSTEM LOGICAL NODES RSYN: Synchronism-check or synchronizing ---
LPHD: Physical device information Yes C: LOGICAL NODES FOR CONTROL
LLN0: Logical node zero Yes CALH: Alarm handling ---
P: LOGICAL NODES FOR PROTECTION FUNCTIONS CCGR: Cooling group control ---
PDIF: Differential Yes CILO: Interlocking ---
PDIR: Direction comparison --- CPOW: Point-on-wave switching --- C
PDIS: Distance Yes CSWI: Switch controller ---
PDOP: Directional overpower --- G: LOGICAL NODES FOR GENERIC REFERENCES
PDUP: Directional underpower --- GAPC: Generic automatic process control ---
PFRC: Rate of change of frequency --- GGIO: Generic process I/O Yes
PHAR: Harmonic restraint --- GSAL: Generic security application ---
PHIZ: Ground detector --- I: LOGICAL NODES FOR INTERFACING AND ARCHIVING
PIOC: Instantaneous overcurrent Yes IARC: Archiving ---
PMRI Motor restart inhibition --- IHMI: Human machine interface ---
PMSS: Motor starting time supervision --- ITCI: Telecontrol interface ---
POPF: Over power factor --- ITMI: Telemonitoring interface ---
PPAM: Phase angle measuring --- A: LOGICAL NODES FOR AUTOMATIC CONTROL
PSCH: Protection scheme --- ANCR: Neutral current regulator ---
PSDE: Sensitive directional earth fault --- ARCO: Reactive power control ---
PTEF: Transient earth fault --- ATCC: Automatic tap changer controller ---
PTOC: Time overcurrent Yes AVCO: Voltage control ---
PTOF: Overfrequency --- M: LOGICAL NODES FOR METERING AND MEASUREMENT
PTOV: Overvoltage Yes MDIF: Differential measurements ---
PTRC: Protection trip conditioning Yes MHAI: Harmonics or interharmonics ---
PTTR: Thermal overload Yes MHAN: Non phase related harmonics or ---
interharmonic
PTUC: Undercurrent ---
MMTR: Metering ---
PTUV: Undervoltage Yes
MMXN: Non phase related measurement Yes
PUPF: Underpower factor ---
MMXU: Measurement Yes
PTUF: Underfrequency ---
MSQI: Sequence and imbalance ---
PVOC: Voltage controlled time overcurrent ---
MSTA: Metering statistics ---
PVPH: Volts per Hz ---
S: LOGICAL NODES FOR SENSORS AND MONITORING
PZSU: Zero speed or underspeed ---
SARC: Monitoring and diagnostics for arcs ---
R: LOGICAL NODES FOR PROTECTION RELATED
FUNCTIONS SIMG: Insulation medium supervision (gas) ---
RDRE: Disturbance recorder function --- SIML: Insulation medium supervision (liquid) ---
RADR: Disturbance recorder channel analogue --- SPDC: Monitoring and diagnostics for partial ---
discharges
RBDR: Disturbance recorder channel binary ---
X: LOGICAL NODES FOR SWITCHGEAR
RDRS: Disturbance record handling ---
XCBR: Circuit breaker Yes
RBRF: Breaker failure Yes
XSWI: Circuit switch ---
RDIR: Directional element ---
T: LOGICAL NODES FOR INSTRUMENT TRANSFORMERS
RFLO: Fault locator Yes
TCTR: Current transformer ---
RPSB: Power swing detection/blocking Yes
TVTR: Voltage transformer ---
RREC: Autoreclosing Yes

GE Multilin B30 Bus Differential Relay C-7

 C.3 LOGICAL NODES APPENDIX C

NODES UR-FAMILY
Y: LOGICAL NODES FOR POWER TRANSFORMERS
YEFN: Earth fault neutralizer (Peterson coil) ---
YLTC: Tap changer ---
YPSH: Power shunt ---
YPTR: Power transformer ---
Z: LOGICAL NODES FOR FURTHER POWER SYSTEM
EQUIPMENT
ZAXN: Auxiliary network ---
ZBAT: Battery ---
ZBSH: Bushing ---
ZCAB: Power cable ---
C ZCAP: Capacitor bank ---
ZCON: Converter ---
ZGEN: Generator ---
ZGIL: Gas insulated line ---
ZLIN: Power overhead line ---
ZMOT: Motor ---
ZREA: Reactor ---
ZRRC: Rotating reactive component ---
ZSAR: Surge arrestor ---
ZTCF: Thyristor controlled frequency converter ---
ZTRC: Thyristor controlled reactive component ---

C-8 B30 Bus Differential Relay GE Multilin

 APPENDIX C C.3 LOGICAL NODES

GE Multilin B30 Bus Differential Relay C-9

 C.3 LOGICAL NODES APPENDIX C

C-10 B30 Bus Differential Relay GE Multilin

 APPENDIX D D.1 IEC 60870-5-104

APPENDIX D IEC 60870-5-104 COMMUNICATIONSD.1IEC 60870-5-104 D.1.1 INTEROPERABILITY DOCUMENT

This document is adapted from the IEC 60870-5-104 standard. For ths section the boxes indicate the following: Ë
 – used
in standard direction; Ë – not used; – cannot be selected in IEC 60870-5-104 standard.
1. SYSTEM OR DEVICE:
Ë System Definition
Ë Controlling Station Definition (Master)
 Controlled Station Definition (Slave)
Ë
2. NETWORK CONFIGURATION:
Point-to-Point Multipoint
Multiple Point-to-Point Multipoint Star
3. PHYSICAL LAYER
Transmission Speed (control direction):
Unbalanced Interchange Unbalanced Interchange Balanced Interchange Circuit
Circuit V.24/V.28 Standard: Circuit V.24/V.28 Recommended X.24/X.27:
if >1200 bits/s: D
100 bits/sec. 2400 bits/sec. 2400 bits/sec.
200 bits/sec. 4800 bits/sec. 4800 bits/sec.
300 bits/sec. 9600 bits/sec. 9600 bits/sec.
600 bits/sec. 19200 bits/sec.
1200 bits/sec. 38400 bits/sec.
56000 bits/sec.
64000 bits/sec.

Transmission Speed (monitor direction):

Unbalanced Interchange Unbalanced Interchange Balanced Interchange Circuit
Circuit V.24/V.28 Standard: Circuit V.24/V.28 Recommended X.24/X.27:
if >1200 bits/s:
100 bits/sec. 2400 bits/sec. 2400 bits/sec.
200 bits/sec. 4800 bits/sec. 4800 bits/sec.
300 bits/sec. 9600 bits/sec. 9600 bits/sec.
600 bits/sec. 19200 bits/sec.
1200 bits/sec. 38400 bits/sec.
56000 bits/sec.
64000 bits/sec.

4. LINK LAYER
Link Transmission Procedure: Address Field of the Link:
Balanced Transmision Not Present (Balanced Transmission Only)
Unbalanced Transmission One Octet
Two Octets
Structured
Unstructured
Frame Length (maximum length, number of octets): Not selectable in companion IEC 60870-5-104 standard

GE Multilin B30 Bus Differential Relay D-1

 D.1 IEC 60870-5-104 APPENDIX D

When using an unbalanced link layer, the following ADSU types are returned in class 2 messages (low priority) with the
indicated causes of transmission:
The standard assignment of ADSUs to class 2 messages is used as follows:

A special assignment of ADSUs to class 2 messages is used as follows:

5. APPLICATION LAYER
Transmission Mode for Application Data:
Mode 1 (least significant octet first), as defined in Clause 4.10 of IEC 60870-5-4, is used exclusively in this companion
stanadard.
Common Address of ADSU:
One Octet
 Two Octets
Ë
Information Object Address:
One Octet  Structured
Ë
D Two Octets  Unstructured
Ë
 Three Octets
Ë
Cause of Transmission:
One Octet
 Two Octets (with originator address). Originator address is set to zero if not used.
Ë
Maximum Length of APDU: 253 (the maximum length may be reduced by the system.
Selection of standard ASDUs:
For the following lists, the boxes indicate the following: Ë
 – used in standard direction; Ë – not used; – cannot be
selected in IEC 60870-5-104 standard.
Process information in monitor direction
Ë
 <1> := Single-point information M_SP_NA_1
<2> := Single-point information with time tag M_SP_TA_1
Ë <3> := Double-point information M_DP_NA_1
<4> := Double-point information with time tag M_DP_TA_1
Ë <5> := Step position information M_ST_NA_1
<6> := Step position information with time tag M_ST_TA_1
Ë <7> := Bitstring of 32 bits M_BO_NA_1
<8> := Bitstring of 32 bits with time tag M_BO_TA_1
Ë <9> := Measured value, normalized value M_ME_NA_1
<10> := Measured value, normalized value with time tag M_NE_TA_1
Ë <11> := Measured value, scaled value M_ME_NB_1
<12> := Measured value, scaled value with time tag M_NE_TB_1
Ë
 <13> := Measured value, short floating point value M_ME_NC_1
<14> := Measured value, short floating point value with time tag M_NE_TC_1
Ë
 <15> := Integrated totals M_IT_NA_1
<16> := Integrated totals with time tag M_IT_TA_1
<17> := Event of protection equipment with time tag M_EP_TA_1
<18> := Packed start events of protection equipment with time tag M_EP_TB_1
<19> := Packed output circuit information of protection equipment with time tag M_EP_TC_1
Ë <20> := Packed single-point information with status change detection M_SP_NA_1

D-2 B30 Bus Differential Relay GE Multilin

 APPENDIX D D.1 IEC 60870-5-104

Ë <21> := Measured value, normalized value without quantity descriptor M_ME_ND_1

Ë
 <30> := Single-point information with time tag CP56Time2a M_SP_TB_1
Ë <31> := Double-point information wiht time tag CP56Time2a M_DP_TB_1
Ë <32> := Step position information with time tag CP56Time2a M_ST_TB_1
Ë <33> := Bitstring of 32 bits with time tag CP56Time2a M_BO_TB_1
Ë <34> := Measured value, normalized value with time tag CP56Time2a M_ME_TD_1
Ë <35> := Measured value, scaled value with time tag CP56Time2a M_ME_TE_1
Ë <36> := Measured value, short floating point value with time tag CP56Time2a M_ME_TF_1
Ë
 <37> := Integrated totals with time tag CP56Time2a M_IT_TB_1
Ë <38> := Event of protection equipment with time tag CP56Time2a M_EP_TD_1
Ë <39> := Packed start events of protection equipment with time tag CP56Time2a M_EP_TE_1
Ë <40> := Packed output circuit information of protection equipment with time tag CP56Time2a M_EP_TF_1

Either the ASDUs of the set <2>, <4>, <6>, <8>, <10>, <12>, <14>, <16>, <17>, <18>, and <19> or of the set
<30> to <40> are used.
Process information in control direction
Ë
 <45> := Single command C_SC_NA_1
D
Ë <46> := Double command C_DC_NA_1
Ë <47> := Regulating step command C_RC_NA_1
Ë <48> := Set point command, normalized value C_SE_NA_1
Ë <49> := Set point command, scaled value C_SE_NB_1
Ë <50> := Set point command, short floating point value C_SE_NC_1
Ë <51> := Bitstring of 32 bits C_BO_NA_1

Ë
 <58> := Single command with time tag CP56Time2a C_SC_TA_1
Ë <59> := Double command with time tag CP56Time2a C_DC_TA_1
Ë <60> := Regulating step command with time tag CP56Time2a C_RC_TA_1
Ë <61> := Set point command, normalized value with time tag CP56Time2a C_SE_TA_1
Ë <62> := Set point command, scaled value with time tag CP56Time2a C_SE_TB_1
Ë <63> := Set point command, short floating point value with time tag CP56Time2a C_SE_TC_1
Ë <64> := Bitstring of 32 bits with time tag CP56Time2a C_BO_TA_1

Either the ASDUs of the set <45> to <51> or of the set <58> to <64> are used.
System information in monitor direction
Ë
 <70> := End of initialization M_EI_NA_1

System information in control direction

Ë
 <100> := Interrogation command C_IC_NA_1
Ë
 <101> := Counter interrogation command C_CI_NA_1
Ë
 <102> := Read command C_RD_NA_1
Ë
 <103> := Clock synchronization command (see Clause 7.6 in standard) C_CS_NA_1
<104> := Test command C_TS_NA_1
Ë
 <105> := Reset process command C_RP_NA_1
<106> := Delay acquisition command C_CD_NA_1
Ë
 <107> := Test command with time tag CP56Time2a C_TS_TA_1

GE Multilin B30 Bus Differential Relay D-3

 D.1 IEC 60870-5-104 APPENDIX D

Parameter in control direction

Ë <110> := Parameter of measured value, normalized value PE_ME_NA_1
Ë <111> := Parameter of measured value, scaled value PE_ME_NB_1
Ë
 <112> := Parameter of measured value, short floating point value PE_ME_NC_1
Ë <113> := Parameter activation PE_AC_NA_1

File transfer
Ë <120> := File Ready F_FR_NA_1
Ë <121> := Section Ready F_SR_NA_1
Ë <122> := Call directory, select file, call file, call section F_SC_NA_1
Ë <123> := Last section, last segment F_LS_NA_1
Ë <124> := Ack file, ack section F_AF_NA_1
Ë <125> := Segment F_SG_NA_1
Ë <126> := Directory (blank or X, available only in monitor [standard] direction) C_CD_NA_1

Type identifier and cause of transmission assignments

D (station-specific parameters)
In the following table:
• Shaded boxes are not required.
• Black boxes are not permitted in this companion standard.
• Blank boxes indicate functions or ASDU not used.
• ‘X’ if only used in the standard direction
TYPE IDENTIFICATION CAUSE OF TRANSMISSION

REQUEST BY GROUP <N> COUNTER REQ

UNKNOWN INFORMATION OBJECT ADDR

UNKNOWN INFORMATION OBJECT ADDR

UNKNOWN COMMON ADDRESS OF ADSU
INTERROGATED BY GROUP <NUMBER>
RETURN INFO CAUSED BY LOCAL CMD

UNKNOWN CAUSE OF TRANSMISSION

UNKNOWN TYPE IDENTIFICATION
DEACTIVATION CONFIRMATION
ACTIVATION CONFIRMATION

ACTIVATION TERMINATION
REQUEST OR REQUESTED
BACKGROUND SCAN
PERIODIC, CYCLIC

FILE TRANSFER
SPONTANEOUS

DEACTIVATION
ACTIVATION
INITIALIZED

20 37
NO. MNEMONIC 1 2 3 4 5 6 7 8 9 10 11 12 13 to to 44 45 46 47
36 41
<1> M_SP_NA_1 X X X X X
<2> M_SP_TA_1
<3> M_DP_NA_1
<4> M_DP_TA_1
<5> M_ST_NA_1
<6> M_ST_TA_1
<7> M_BO_NA_1
<8> M_BO_TA_1

D-4 B30 Bus Differential Relay GE Multilin

 APPENDIX D D.1 IEC 60870-5-104

TYPE IDENTIFICATION CAUSE OF TRANSMISSION

UNKNOWN COMMON ADDRESS OF ADSU

UNKNOWN INFORMATION OBJECT ADDR

UNKNOWN INFORMATION OBJECT ADDR

REQUEST BY GROUP <N> COUNTER REQ
INTERROGATED BY GROUP <NUMBER>
RETURN INFO CAUSED BY LOCAL CMD

UNKNOWN CAUSE OF TRANSMISSION

UNKNOWN TYPE IDENTIFICATION
DEACTIVATION CONFIRMATION
ACTIVATION CONFIRMATION

ACTIVATION TERMINATION
REQUEST OR REQUESTED
BACKGROUND SCAN
PERIODIC, CYCLIC

FILE TRANSFER
SPONTANEOUS

DEACTIVATION
ACTIVATION
INITIALIZED
20 37
NO. MNEMONIC 1 2 3 4 5 6 7 8 9 10 11 12 13 to to 44 45 46 47
36 41
<9> M_ME_NA_1 D
<10> M_ME_TA_1
<11> M_ME_NB_1
<12> M_ME_TB_1
<13> M_ME_NC_1 X X X X
<14> M_ME_TC_1
<15> M_IT_NA_1 X X
<16> M_IT_TA_1
<17> M_EP_TA_1
<18> M_EP_TB_1
<19> M_EP_TC_1
<20> M_PS_NA_1
<21> M_ME_ND_1
<30> M_SP_TB_1 X X X
<31> M_DP_TB_1
<32> M_ST_TB_1
<33> M_BO_TB_1
<34> M_ME_TD_1
<35> M_ME_TE_1
<36> M_ME_TF_1
<37> M_IT_TB_1 X X
<38> M_EP_TD_1
<39> M_EP_TE_1
<40> M_EP_TF_1
<45> C_SC_NA_1 X X X X X
<46> C_DC_NA_1
<47> C_RC_NA_1
<48> C_SE_NA_1
<49> C_SE_NB_1

GE Multilin B30 Bus Differential Relay D-5

 D.1 IEC 60870-5-104 APPENDIX D

TYPE IDENTIFICATION CAUSE OF TRANSMISSION

UNKNOWN COMMON ADDRESS OF ADSU

UNKNOWN INFORMATION OBJECT ADDR

UNKNOWN INFORMATION OBJECT ADDR

REQUEST BY GROUP <N> COUNTER REQ
INTERROGATED BY GROUP <NUMBER>
RETURN INFO CAUSED BY LOCAL CMD

UNKNOWN CAUSE OF TRANSMISSION

UNKNOWN TYPE IDENTIFICATION
DEACTIVATION CONFIRMATION
ACTIVATION CONFIRMATION

ACTIVATION TERMINATION
REQUEST OR REQUESTED
BACKGROUND SCAN
PERIODIC, CYCLIC

FILE TRANSFER
SPONTANEOUS

DEACTIVATION
ACTIVATION
INITIALIZED
20 37
NO. MNEMONIC 1 2 3 4 5 6 7 8 9 10 11 12 13 to to 44 45 46 47
36 41
D <50> C_SE_NC_1
<51> C_BO_NA_1
<58> C_SC_TA_1 X X X X X
<59> C_DC_TA_1
<60> C_RC_TA_1
<61> C_SE_TA_1
<62> C_SE_TB_1
<63> C_SE_TC_1
<64> C_BO_TA_1
<70> M_EI_NA_1*) X
<100> C_IC_NA_1 X X X X X
<101> C_CI_NA_1 X X X
<102> C_RD_NA_1 X
<103> C_CS_NA_1 X X X
<104> C_TS_NA_1
<105> C_RP_NA_1 X X
<106> C_CD_NA_1
<107> C_TS_TA_1
<110> P_ME_NA_1
<111> P_ME_NB_1
<112> P_ME_NC_1 X X X
<113> P_AC_NA_1
<120> F_FR_NA_1
<121> F_SR_NA_1
<122> F_SC_NA_1
<123> F_LS_NA_1
<124> F_AF_NA_1
<125> F_SG_NA_1
<126> F_DR_TA_1*)

D-6 B30 Bus Differential Relay GE Multilin

 APPENDIX D D.1 IEC 60870-5-104

6. BASIC APPLICATION FUNCTIONS

Station Initialization:
 Remote initialization
Ë
Cyclic Data Transmission:
 Cyclic data transmission
Ë
Read Procedure:
 Read procedure
Ë
Spontaneous Transmission:
 Spontaneous transmission
Ë
Double transmission of information objects with cause of transmission spontaneous:
The following type identifications may be transmitted in succession caused by a single status change of an information
object. The particular information object addresses for which double transmission is enabled are defined in a project-
specific list.
Ë Single point information: M_SP_NA_1, M_SP_TA_1, M_SP_TB_1, and M_PS_NA_1
Ë Double point information: M_DP_NA_1, M_DP_TA_1, and M_DP_TB_1 D
Ë Step position information: M_ST_NA_1, M_ST_TA_1, and M_ST_TB_1
Ë Bitstring of 32 bits: M_BO_NA_1, M_BO_TA_1, and M_BO_TB_1 (if defined for a specific project)
Ë Measured value, normalized value: M_ME_NA_1, M_ME_TA_1, M_ME_ND_1, and M_ME_TD_1
Ë Measured value, scaled value: M_ME_NB_1, M_ME_TB_1, and M_ME_TE_1
Ë Measured value, short floating point number: M_ME_NC_1, M_ME_TC_1, and M_ME_TF_1
Station interrogation:

 Global
Ë
 Group 1
Ë  Group 5
Ë  Group 9
Ë  Group 13
Ë
 Group 2
Ë  Group 6
Ë  Group 10
Ë  Group 14
Ë
 Group 3
Ë  Group 7
Ë  Group 11
Ë  Group 15
Ë
 Group 4
Ë  Group 8
Ë  Group 12
Ë  Group 16
Ë

Clock synchronization:
 Clock synchronization (optional, see Clause 7.6)
Ë
Command transmission:
 Direct command transmission
Ë
Ë Direct setpoint command transmission
 Select and execute command
Ë
Ë Select and execute setpoint command
 C_SE ACTTERM used
Ë
 No additional definition
Ë
 Short pulse duration (duration determined by a system parameter in the outstation)
Ë
 Long pulse duration (duration determined by a system parameter in the outstation)
Ë
 Persistent output
Ë

 Supervision of maximum delay in command direction of commands and setpoint commands

Ë
Maximum allowable delay of commands and setpoint commands: 10 s

GE Multilin B30 Bus Differential Relay D-7

 D.1 IEC 60870-5-104 APPENDIX D

Transmission of integrated totals:

 Mode A: Local freeze with spontaneous transmission
Ë
 Mode B: Local freeze with counter interrogation
Ë
 Mode C: Freeze and transmit by counter-interrogation commands
Ë
 Mode D: Freeze by counter-interrogation command, frozen values reported simultaneously
Ë

 Counter read
Ë
 Counter freeze without reset
Ë
 Counter freeze with reset
Ë
 Counter reset
Ë

 General request counter

Ë
 Request counter group 1
Ë
 Request counter group 2
Ë

D  Request counter group 3

Ë
 Request counter group 4
Ë
Parameter loading:
 Threshold value
Ë
Ë Smoothing factor
Ë Low limit for transmission of measured values
Ë High limit for transmission of measured values
Parameter activation:
Ë Activation/deactivation of persistent cyclic or periodic transmission of the addressed object
Test procedure:
Ë Test procedure
File transfer:
File transfer in monitor direction:
Ë Transparent file
Ë Transmission of disturbance data of protection equipment
Ë Transmission of sequences of events
Ë Transmission of sequences of recorded analog values
File transfer in control direction:
Ë Transparent file
Background scan:
Ë Background scan
Acquisition of transmission delay:
Acquisition of transmission delay

D-8 B30 Bus Differential Relay GE Multilin

 APPENDIX D D.1 IEC 60870-5-104

Definition of time outs:

PARAMETER DEFAULT REMARKS SELECTED
VALUE VALUE
t0 30 s Timeout of connection establishment 120 s
t1 15 s Timeout of send or test APDUs 15 s
t2 10 s Timeout for acknowlegements in case of no data messages t2 < t1 10 s
t3 20 s Timeout for sending test frames in case of a long idle state 20 s

Maximum range of values for all time outs: 1 to 255 s, accuracy 1 s

Maximum number of outstanding I-format APDUs k and latest acknowledge APDUs (w):
PARAMETER DEFAULT REMARKS SELECTED
VALUE VALUE
k 12 APDUs Maximum difference receive sequence number to send state variable 12 APDUs

w 8 APDUs Latest acknowledge after receiving w I-format APDUs 8 APDUs

Maximum range of values k: 1 to 32767 (215 – 1) APDUs, accuracy 1 APDU

Maximum range of values w: 1 to 32767 APDUs, accuracy 1 APDU D
Recommendation: w should not exceed two-thirds of k.
Portnumber:
PARAMETER VALUE REMARKS
Portnumber 2404 In all cases

RFC 2200 suite:

RFC 2200 is an official Internet Standard which describes the state of standardization of protocols used in the Internet
as determined by the Internet Architecture Board (IAB). It offers a broad spectrum of actual standards used in the Inter-
net. The suitable selection of documents from RFC 2200 defined in this standard for given projects has to be chosen
by the user of this standard.
 Ethernet 802.3
Ë
Ë Serial X.21 interface
Ë Other selection(s) from RFC 2200 (list below if selected)

D.1.2 IEC 60870-5-104 POINTS

The IEC 60870-5-104 data points are configured through the SETTINGS PRODUCT SETUP COMMUNICATIONS DNP /
IEC104 POINT LISTS menu. Refer to the Communications section of Chapter 5 for additional details.

GE Multilin B30 Bus Differential Relay D-9

 D.1 IEC 60870-5-104 APPENDIX D

D-10 B30 Bus Differential Relay GE Multilin

 APPENDIX E E.1 DEVICE PROFILE DOCUMENT

APPENDIX E DNP COMMUNICATIONSE.1DEVICE PROFILE DOCUMENT E.1.1 DNP V3.00 DEVICE PROFILE

The following table provides a ‘Device Profile Document’ in the standard format defined in the DNP 3.0 Subset Definitions
Document.

Table E–1: DNP V3.00 DEVICE PROFILE (Sheet 1 of 3)

(Also see the IMPLEMENTATION TABLE in the following section)

Vendor Name: General Electric Multilin

Device Name: UR Series Relay

Highest DNP Level Supported: Device Function:

For Requests: Level 2 Ë Master
For Responses: Level 2  Slave
Ë
Notable objects, functions, and/or qualifiers supported in addition to the Highest DNP Levels Supported (the complete
list is described in the attached table):
Binary Inputs (Object 1)
Binary Input Changes (Object 2)
Binary Outputs (Object 10)
Binary Counters (Object 20)
Frozen Counters (Object 21)
E
Counter Change Event (Object 22)
Frozen Counter Event (Object 23)
Analog Inputs (Object 30)
Analog Input Changes (Object 32)
Analog Deadbands (Object 34)
File Transfer (Object 70)

Maximum Data Link Frame Size (octets): Maximum Application Fragment Size (octets):
Transmitted: 292 Transmitted: 240
Received: 292 Received: 2048

Maximum Data Link Re-tries: Maximum Application Layer Re-tries:

Ë None  None
Ë
 Fixed at 2
Ë Ë Configurable
Ë Configurable
Requires Data Link Layer Confirmation:
Ë
 Never
Ë Always
Ë Sometimes
Ë Configurable

GE Multilin B30 Bus Differential Relay E-1

 E.1 DEVICE PROFILE DOCUMENT APPENDIX E

Table E–1: DNP V3.00 DEVICE PROFILE (Sheet 2 of 3)

Requires Application Layer Confirmation:

Ë Never
Ë Always
Ë
 When reporting Event Data
Ë
 When sending multi-fragment responses
Ë Sometimes
Ë Configurable

Timeouts while waiting for:

Data Link Confirm: Ë None Ë
 Fixed at 3 s Ë Variable Ë Configurable
Complete Appl. Fragment: Ë
 None Ë Fixed at ____ Ë Variable Ë Configurable
Application Confirm: Ë None Ë
 Fixed at 4 s Ë Variable Ë Configurable
Complete Appl. Response: Ë
 None Ë Fixed at ____ Ë Variable Ë Configurable

Others:
Transmission Delay: No intentional delay
Inter-character Timeout: 50 ms
Need Time Delay: Configurable (default = 24 hrs.)
Select/Operate Arm Timeout: 10 s
Binary input change scanning period: 8 times per power system cycle

E Packed binary change process period:

Analog input change scanning period:
1s
500 ms
Counter change scanning period: 500 ms
Frozen counter event scanning period: 500 ms
Unsolicited response notification delay: 500 ms
Unsolicited response retry delay configurable 0 to 60 sec.

Sends/Executes Control Operations:

WRITE Binary Outputs Ë
 Never Ë Always Ë Sometimes Ë Configurable
SELECT/OPERATE Ë Never Ë
 Always Ë Sometimes Ë Configurable
DIRECT OPERATE Ë Never Ë
 Always Ë Sometimes Ë Configurable
DIRECT OPERATE – NO ACK Ë Never Ë
 Always Ë Sometimes Ë Configurable

Count > 1 Ë
 Never Ë Always Ë Sometimes Ë Configurable
Pulse On Ë Never Ë Always Ë
 Sometimes Ë Configurable
Pulse Off Ë Never Ë Always Ë
 Sometimes Ë Configurable
Latch On Ë Never Ë Always Ë
 Sometimes Ë Configurable
Latch Off Ë Never Ë Always Ë
 Sometimes Ë Configurable

Queue  Never
Ë Ë Always Ë Sometimes Ë Configurable
Clear Queue  Never
Ë Ë Always Ë Sometimes Ë Configurable

Explanation of ‘Sometimes’: Object 12 points are mapped to UR Virtual Inputs. The persistence of Virtual Inputs is
determined by the VIRTUAL INPUT X TYPE settings. Both “Pulse On” and “Latch On” operations perform the same func-
tion in the UR; that is, the appropriate Virtual Input is put into the “On” state. If the Virtual Input is set to “Self-Reset”,
it will reset after one pass of FlexLogic™. The On/Off times and Count value are ignored. “Pulse Off” and “Latch Off”
operations put the appropriate Virtual Input into the “Off” state. “Trip” and “Close” operations both put the appropriate
Virtual Input into the “On” state.

E-2 B30 Bus Differential Relay GE Multilin

 APPENDIX E E.1 DEVICE PROFILE DOCUMENT

Table E–1: DNP V3.00 DEVICE PROFILE (Sheet 3 of 3)

Reports Binary Input Change Events when no Reports time-tagged Binary Input Change Events when no
specific variation requested: specific variation requested:
Ë Never Ë Never
Ë
 Only time-tagged Ë
 Binary Input Change With Time
Ë Only non-time-tagged Ë Binary Input Change With Relative Time
Ë Configurable Ë Configurable (attach explanation)

Sends Unsolicited Responses: Sends Static Data in Unsolicited Responses:

Ë Never  Never
Ë
Ë
 Configurable Ë When Device Restarts
Ë Only certain objects Ë When Status Flags Change
Ë Sometimes (attach explanation)
ENABLE/DISABLE unsolicited Function No other options are permitted.
Ë

codes supported

Default Counter Object/Variation: Counters Roll Over at:

Ë No Counters Reported Ë No Counters Reported
Ë Configurable (attach explanation) Ë Configurable (attach explanation)
 Default Object:
Ë 20 Ë
 16 Bits (Counter 8)
Default Variation: 1 Ë
 32 Bits (Counters 0 to 7, 9)
 Point-by-point list attached
Ë Ë Other Value: _____
Ë
 Point-by-point list attached E
Sends Multi-Fragment Responses:
 Yes
Ë
Ë No

GE Multilin B30 Bus Differential Relay E-3

 E.1 DEVICE PROFILE DOCUMENT APPENDIX E

E.1.2 IMPLEMENTATION TABLE

The following table identifies the variations, function codes, and qualifiers supported by the B30 in both request messages
and in response messages. For static (non-change-event) objects, requests sent with qualifiers 00, 01, 06, 07, or 08, will be
responded with qualifiers 00 or 01. Static object requests sent with qualifiers 17 or 28 will be responded with qualifiers 17 or
28. For change-event objects, qualifiers 17 or 28 are always responded.

Table E–2: IMPLEMENTATION TABLE (Sheet 1 of 4)

OBJECT REQUEST RESPONSE
OBJECT VARIATION DESCRIPTION FUNCTION QUALIFIER FUNCTION QUALIFIER
NO. NO. CODES (DEC) CODES (HEX) CODES (DEC) CODES (HEX)
1 0 Binary Input (Variation 0 is used to request 1 (read) 00, 01 (start-stop)
default variation) 22 (assign class) 06 (no range, or all)
07, 08 (limited quantity)
17, 28 (index)
1 Binary Input 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
2 Binary Input with Status 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
2 0 Binary Input Change (Variation 0 is used to 1 (read) 06 (no range, or all)
request default variation) 07, 08 (limited quantity)
1 Binary Input Change without Time 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
E 2 Binary Input Change with Time 1 (read) 06 (no range, or all)
07, 08 (limited quantity)
129 (response
130 (unsol. resp.)
17, 28 (index)

3 Binary Input Change with Relative Time 1 (read) 06 (no range, or all)
(parse only) 07, 08 (limited quantity)
10 0 Binary Output Status (Variation 0 is used to 1 (read) 00, 01(start-stop)
request default variation) 06 (no range, or all)
07, 08 (limited quantity)
17, 28 (index)
2 Binary Output Status 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
12 1 Control Relay Output Block 3 (select) 00, 01 (start-stop) 129 (response) echo of request
4 (operate) 07, 08 (limited quantity)
5 (direct op) 17, 28 (index)
6 (dir. op, noack)
20 0 Binary Counter 1 (read) 00, 01(start-stop)
(Variation 0 is used to request default 7 (freeze) 06(no range, or all)
variation) 8 (freeze noack) 07, 08(limited quantity)
9 (freeze clear) 17, 28(index)
10 (frz. cl. noack)
22 (assign class)
1 32-Bit Binary Counter 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
7 (freeze) 06 (no range, or all) 17, 28 (index)
8 (freeze noack) 07, 08 (limited quantity) (see Note 2)
9 (freeze clear) 17, 28 (index)
10 (frz. cl. noack)
22 (assign class)
Note 1: A default variation refers to the variation responded when variation 0 is requested and/or in class 0, 1, 2, or 3 scans. The default varia-
tions for object types 1, 2, 20, 21, 22, 23, 30, and 32 are selected via relay settings. Refer to the Communications section in Chapter 5
for details. This optimizes the class 0 poll data size.
Note 2: For static (non-change-event) objects, qualifiers 17 or 28 are only responded when a request is sent with qualifiers 17 or 28, respec-
tively. Otherwise, static object requests sent with qualifiers 00, 01, 06, 07, or 08, will be responded with qualifiers 00 or 01 (for change-
event objects, qualifiers 17 or 28 are always responded.)
Note 3: Cold restarts are implemented the same as warm restarts – the B30 is not restarted, but the DNP process is restarted.

E-4 B30 Bus Differential Relay GE Multilin

 APPENDIX E E.1 DEVICE PROFILE DOCUMENT

Table E–2: IMPLEMENTATION TABLE (Sheet 2 of 4)

OBJECT REQUEST RESPONSE
OBJECT VARIATION DESCRIPTION FUNCTION QUALIFIER FUNCTION QUALIFIER
NO. NO. CODES (DEC) CODES (HEX) CODES (DEC) CODES (HEX)
20 2 16-Bit Binary Counter 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
cont’d 7 (freeze) 06 (no range, or all) 17, 28 (index)
8 (freeze noack) 07, 08 (limited quantity) (see Note 2)
9 (freeze clear) 17, 28 (index)
10 (frz. cl. noack)
22 (assign class)
5 32-Bit Binary Counter without Flag 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
7 (freeze) 06 (no range, or all) 17, 28 (index)
8 (freeze noack) 07, 08 (limited quantity) (see Note 2)
9 (freeze clear) 17, 28 (index)
10 (frz. cl. noack)
22 (assign class)
6 16-Bit Binary Counter without Flag 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
7 (freeze) 06 (no range, or all) 17, 28 (index)
8 (freeze noack) 07, 08 (limited quantity) (see Note 2)
9 (freeze clear) 17, 28 (index)
10 (frz. cl. noack)
22 (assign class)
21 0 Frozen Counter 1 (read) 00, 01 (start-stop)
(Variation 0 is used to request default 22 (assign class) 06 (no range, or all)
variation) 07, 08 (limited quantity)
17, 28 (index)
1 32-Bit Frozen Counter 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index) E
2 16-Bit Frozen Counter 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
9 32-Bit Frozen Counter without Flag 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
10 16-Bit Frozen Counter without Flag 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
22 0 Counter Change Event (Variation 0 is used 1 (read) 06 (no range, or all)
to request default variation) 07, 08 (limited quantity)
1 32-Bit Counter Change Event 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
2 16-Bit Counter Change Event 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
5 32-Bit Counter Change Event with Time 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
6 16-Bit Counter Change Event with Time 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
23 0 Frozen Counter Event (Variation 0 is used 1 (read) 06 (no range, or all)
to request default variation) 07, 08 (limited quantity)
1 32-Bit Frozen Counter Event 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
2 16-Bit Frozen Counter Event 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
Note 1: A default variation refers to the variation responded when variation 0 is requested and/or in class 0, 1, 2, or 3 scans. The default varia-
tions for object types 1, 2, 20, 21, 22, 23, 30, and 32 are selected via relay settings. Refer to the Communications section in Chapter 5
for details. This optimizes the class 0 poll data size.
Note 2: For static (non-change-event) objects, qualifiers 17 or 28 are only responded when a request is sent with qualifiers 17 or 28, respec-
tively. Otherwise, static object requests sent with qualifiers 00, 01, 06, 07, or 08, will be responded with qualifiers 00 or 01 (for change-
event objects, qualifiers 17 or 28 are always responded.)
Note 3: Cold restarts are implemented the same as warm restarts – the B30 is not restarted, but the DNP process is restarted.

GE Multilin B30 Bus Differential Relay E-5

 E.1 DEVICE PROFILE DOCUMENT APPENDIX E

Table E–2: IMPLEMENTATION TABLE (Sheet 3 of 4)

OBJECT REQUEST RESPONSE
OBJECT VARIATION DESCRIPTION FUNCTION QUALIFIER FUNCTION QUALIFIER
NO. NO. CODES (DEC) CODES (HEX) CODES (DEC) CODES (HEX)
23 5 32-Bit Frozen Counter Event with Time 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
cont’d 07, 08 (limited quantity) 130 (unsol. resp.)
6 16-Bit Frozen Counter Event with Time 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
30 0 Analog Input (Variation 0 is used to request 1 (read) 00, 01 (start-stop)
default variation) 22 (assign class) 06 (no range, or all)
07, 08 (limited quantity)
17, 28 (index)
1 32-Bit Analog Input 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
2 16-Bit Analog Input 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
3 32-Bit Analog Input without Flag 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
4 16-Bit Analog Input without Flag 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
22 (assign class) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)

E 5 short floating point 1 (read)

22 (assign class)
00, 01 (start-stop)
06(no range, or all)
129 (response) 00, 01 (start-stop)
17, 28 (index)
07, 08(limited quantity) (see Note 2)
17, 28(index)
32 0 Analog Change Event (Variation 0 is used 1 (read) 06 (no range, or all)
to request default variation) 07, 08 (limited quantity)
1 32-Bit Analog Change Event without Time 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
2 16-Bit Analog Change Event without Time 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
3 32-Bit Analog Change Event with Time 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
4 16-Bit Analog Change Event with Time 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
07, 08 (limited quantity) 130 (unsol. resp.)
5 short floating point Analog Change Event 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
without Time 07, 08 (limited quantity) 130 (unsol. resp.)
7 short floating point Analog Change Event 1 (read) 06 (no range, or all) 129 (response) 17, 28 (index)
with Time 07, 08 (limited quantity) 130 (unsol. resp.)
34 0 Analog Input Reporting Deadband 1 (read) 00, 01 (start-stop)
(Variation 0 is used to request default 06 (no range, or all)
variation) 07, 08 (limited quantity)
17, 28 (index)
1 16-bit Analog Input Reporting Deadband 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
(default – see Note 1) 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
2 (write) 00, 01 (start-stop)
07, 08 (limited quantity)
17, 28 (index)
Note 1: A default variation refers to the variation responded when variation 0 is requested and/or in class 0, 1, 2, or 3 scans. The default varia-
tions for object types 1, 2, 20, 21, 22, 23, 30, and 32 are selected via relay settings. Refer to the Communications section in Chapter 5
for details. This optimizes the class 0 poll data size.
Note 2: For static (non-change-event) objects, qualifiers 17 or 28 are only responded when a request is sent with qualifiers 17 or 28, respec-
tively. Otherwise, static object requests sent with qualifiers 00, 01, 06, 07, or 08, will be responded with qualifiers 00 or 01 (for change-
event objects, qualifiers 17 or 28 are always responded.)
Note 3: Cold restarts are implemented the same as warm restarts – the B30 is not restarted, but the DNP process is restarted.

E-6 B30 Bus Differential Relay GE Multilin

 APPENDIX E E.1 DEVICE PROFILE DOCUMENT

Table E–2: IMPLEMENTATION TABLE (Sheet 4 of 4)

OBJECT REQUEST RESPONSE
OBJECT VARIATION DESCRIPTION FUNCTION QUALIFIER FUNCTION QUALIFIER
NO. NO. CODES (DEC) CODES (HEX) CODES (DEC) CODES (HEX)
34 2 32-bit Analog Input Reporting Deadband 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
cont’d 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
2 (write) 00, 01 (start-stop)
07, 08 (limited quantity)
17, 28 (index)
3 Short floating point Analog Input Reporting 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
Deadband 06 (no range, or all) 17, 28 (index)
07, 08 (limited quantity) (see Note 2)
17, 28 (index)
50 1 Time and Date 1 (read) 00, 01 (start-stop) 129 (response) 00, 01 (start-stop)
(default – see Note 1) 2 (write) 06 (no range, or all) 17, 28 (index)
07 (limited qty=1) (see Note 2)
08 (limited quantity)
17, 28 (index)
52 2 Time Delay Fine 129 (response) 07 (limited quantity)
(quantity = 1)
60 0 Class 0, 1, 2, and 3 Data 1 (read) 06 (no range, or all)
20 (enable unsol)
21 (disable unsol)
22 (assign class)
1 Class 0 Data 1 (read) 06 (no range, or all)
22 (assign class)
2
3
Class 1 Data
Class 2 Data
1 (read)
20 (enable unsol)
06 (no range, or all)
07, 08 (limited quantity) E
4 Class 3 Data 21 (disable unsol)
22 (assign class)
70 1 File identifier 2 (write) 1b (free format) 129 (response) 1b (free format)
3 File command 25 (open) 5b (free format)
27 (delete)
4 File command status 1 (read) 06 (no range, or all) 129 (response) 5b (free format)
22 (assign class) 07, 08 (limited quantity) 130 (unsol. resp.)
26 (close) 5b (free format)
30 (abort)
5 File transfer 1 (read) 06 (no range, or all) 129 (response) 5b (free format)
2 (write) 07, 08 (limited quantity) 130 (unsol. resp.)
22 (assign class) 5b (free format)
6 File transfer status 1 (read) 06 (no range, or all) 129 (response) 5b (free format)
22 (assign class) 07, 08 (limited quantity) 130 (unsol. resp.)
7 File descriptor 1 (read) 06 (no range, or all) 129 (response) 5b (free format)
22 (assign class) 07, 08 (limited quantity) 130 (unsol. resp.)
28 (get file info.) 5b (free format)
80 1 Internal Indications 2 (write) 00 (start-stop)
(index must =7)
--- No Object (function code only) 13 (cold restart)
see Note 3
--- No Object (function code only) 14 (warm restart)
--- No Object (function code only) 23 (delay meas.)
Note 1: A default variation refers to the variation responded when variation 0 is requested and/or in class 0, 1, 2, or 3 scans. The default varia-
tions for object types 1, 2, 20, 21, 22, 23, 30, and 32 are selected via relay settings. Refer to the Communications section in Chapter 5
for details. This optimizes the class 0 poll data size.
Note 2: For static (non-change-event) objects, qualifiers 17 or 28 are only responded when a request is sent with qualifiers 17 or 28, respec-
tively. Otherwise, static object requests sent with qualifiers 00, 01, 06, 07, or 08, will be responded with qualifiers 00 or 01 (for change-
event objects, qualifiers 17 or 28 are always responded.)
Note 3: Cold restarts are implemented the same as warm restarts – the B30 is not restarted, but the DNP process is restarted.

GE Multilin B30 Bus Differential Relay E-7

 E.2 DNP POINT LISTS APPENDIX E

E.2DNP POINT LISTS E.2.1 BINARY INPUT POINTS

The DNP binary input data points are configured through the PRODUCT SETUP COMMUNICATIONS DNP / IEC104 POINT
LISTS BINARY INPUT / MSP POINTS menu. Refer to the Communications section of Chapter 5 for additional details. When a
freeze function is performed on a binary counter point, the frozen value is available in the corresponding frozen counter
point.

BINARY INPUT POINTS

Static (Steady-State) Object Number: 1
Change Event Object Number: 2
Request Function Codes supported: 1 (read), 22 (assign class)
Static Variation reported when variation 0 requested: 2 (Binary Input with status)
Change Event Variation reported when variation 0 requested: 2 (Binary Input Change with Time)
Change Event Scan Rate: 8 times per power system cycle
Change Event Buffer Size: 1000

E-8 B30 Bus Differential Relay GE Multilin

 APPENDIX E E.2 DNP POINT LISTS

E.2.2 BINARY AND CONTROL RELAY OUTPUT

Supported Control Relay Output Block fields: Pulse On, Pulse Off, Latch On, Latch Off, Paired Trip, Paired Close.

BINARY OUTPUT STATUS POINTS

Object Number: 10
Request Function Codes supported: 1 (read)
Default Variation reported when Variation 0 requested: 2 (Binary Output Status)
CONTROL RELAY OUTPUT BLOCKS
Object Number: 12
Request Function Codes supported: 3 (select), 4 (operate), 5 (direct operate), 6 (direct operate, noack)

Table E–3: BINARY/CONTROL OUTPUTS Table E–3: BINARY/CONTROL OUTPUTS

POINT NAME/DESCRIPTION POINT NAME/DESCRIPTION
0 Virtual Input 1 32 Virtual Input 33
1 Virtual Input 2 33 Virtual Input 34
2 Virtual Input 3 34 Virtual Input 35
3 Virtual Input 4 35 Virtual Input 36
4 Virtual Input 5 36 Virtual Input 37
5 Virtual Input 6 37 Virtual Input 38
6
7
Virtual Input 7
Virtual Input 8
38
39
Virtual Input 39
Virtual Input 40
E
8 Virtual Input 9 40 Virtual Input 41
9 Virtual Input 10 41 Virtual Input 42
10 Virtual Input 11 42 Virtual Input 43
11 Virtual Input 12 43 Virtual Input 44
12 Virtual Input 13 44 Virtual Input 45
13 Virtual Input 14 45 Virtual Input 46
14 Virtual Input 15 46 Virtual Input 47
15 Virtual Input 16 47 Virtual Input 48
16 Virtual Input 17 48 Virtual Input 49
17 Virtual Input 18 49 Virtual Input 50
18 Virtual Input 19 50 Virtual Input 51
19 Virtual Input 20 51 Virtual Input 52
20 Virtual Input 21 52 Virtual Input 53
21 Virtual Input 22 53 Virtual Input 54
22 Virtual Input 23 54 Virtual Input 55
23 Virtual Input 24 55 Virtual Input 56
24 Virtual Input 25 56 Virtual Input 57
25 Virtual Input 26 57 Virtual Input 58
26 Virtual Input 27 58 Virtual Input 59
27 Virtual Input 28 59 Virtual Input 60
28 Virtual Input 29 60 Virtual Input 61
29 Virtual Input 30 61 Virtual Input 62
30 Virtual Input 31 62 Virtual Input 63
31 Virtual Input 32 63 Virtual Input 64

GE Multilin B30 Bus Differential Relay E-9

 E.2 DNP POINT LISTS APPENDIX E

E.2.3 COUNTERS

The following table lists both Binary Counters (Object 20) and Frozen Counters (Object 21). When a freeze function is per-
formed on a Binary Counter point, the frozen value is available in the corresponding Frozen Counter point.

BINARY COUNTERS
Static (Steady-State) Object Number: 20
Change Event Object Number: 22
Request Function Codes supported: 1 (read), 7 (freeze), 8 (freeze noack), 9 (freeze and clear),
10 (freeze and clear, noack), 22 (assign class)
Static Variation reported when variation 0 requested: 1 (32-Bit Binary Counter with Flag)
Change Event Variation reported when variation 0 requested: 1 (32-Bit Counter Change Event without time)
Change Event Buffer Size: 10
Default Class for all points: 2
FROZEN COUNTERS
Static (Steady-State) Object Number: 21
Change Event Object Number: 23
Request Function Codes supported: 1 (read)
Static Variation reported when variation 0 requested: 1 (32-Bit Frozen Counter with Flag)
E Change Event Variation reported when variation 0 requested: 1 (32-Bit Frozen Counter Event without time)
Change Event Buffer Size: 10
Default Class for all points: 2

Table E–4: BINARY AND FROZEN COUNTERS

POINT NAME/DESCRIPTION
INDEX
0 Digital Counter 1
1 Digital Counter 2
2 Digital Counter 3
3 Digital Counter 4
4 Digital Counter 5
5 Digital Counter 6
6 Digital Counter 7
7 Digital Counter 8
8 Oscillography Trigger Count
9 Events Since Last Clear

A counter freeze command has no meaning for counters 8 and 9. B30 Digital Counter values are represented as 32-bit inte-
gers. The DNP 3.0 protocol defines counters to be unsigned integers. Care should be taken when interpreting negative
counter values.

E-10 B30 Bus Differential Relay GE Multilin

 APPENDIX E E.2 DNP POINT LISTS

E.2.4 ANALOG INPUTS

The DNP analog input data points are configured through the PRODUCT SETUP COMMUNICATIONS DNP / IEC104 POINT
LISTS ANALOG INPUT / MME POINTS menu. Refer to the Communications section of Chapter 5 for additional details.

It is important to note that 16-bit and 32-bit variations of analog inputs are transmitted through DNP as signed numbers.
Even for analog input points that are not valid as negative values, the maximum positive representation is 32767 for 16-bit
values and 2147483647 for 32-bit values. This is a DNP requirement.
The deadbands for all Analog Input points are in the same units as the Analog Input quantity. For example, an Analog Input
quantity measured in volts has a corresponding deadband in units of volts. This is in conformance with DNP Technical Bul-
letin 9809-001: Analog Input Reporting Deadband. Relay settings are available to set default deadband values according to
data type. Deadbands for individual Analog Input Points can be set using DNP Object 34.

Static (Steady-State) Object Number: 30

Change Event Object Number: 32
Request Function Codes supported: 1 (read), 2 (write, deadbands only), 22 (assign class)
Static Variation reported when variation 0 requested: 1 (32-Bit Analog Input)
Change Event Variation reported when variation 0 requested: 1 (Analog Change Event without Time)
Change Event Scan Rate: defaults to 500 ms
Change Event Buffer Size: 800
Default Class for all Points: 1
E

GE Multilin B30 Bus Differential Relay E-11

 E.2 DNP POINT LISTS APPENDIX E

E-12 B30 Bus Differential Relay GE Multilin

 APPENDIX F F.1 CHANGE NOTES

APPENDIX F MISCELLANEOUSF.1CHANGE NOTES F.1.1 REVISION HISTORY

Table F–1: REVISION HISTORY

MANUAL P/N B30 REVISION RELEASE DATE ECO
1601-0109-B1 2.4x 08 September 2000 N/A
1601-0109-B2 2.4x 03 November 2000 URB-001
1601-0109-B3 2.6x 09 March 2001 URB-002
1601-0109-B4 2.8x 26 September 2001 URB-003
1601-0109-B5 2.9x 03 December 2001 URB-004
1601-0109-B6 2.6x 27 February 2004 URX-120
1601-0109-C1 3.0x 02 July 2002 URB-007
1601-0109-C2 3.1x 30 August 2002 URB-008
1601-0109-C3 3.0x 18 November 2002 URB-009
1601-0109-C4 3.1x 18 November 2002 URB-010
1601-0109-C5 3.0x 11 February 2003 URB-012
1601-0109-C6 3.1x 11 February 2003 URB-013
1601-0109-D1 3.2x 11 February 2003 URB-015
1601-0109-D2 3.2x 02 June 2003 URX-084
1601-0109-E1 3.3x 01 May 2003 URX-080
1601-0109-E2 3.3x 29 May 2003 URX-083
1601-0109-F1 3.4x 10 December 2003 URX-111
1601-0109-F2 3.4x 09 February 2004 URX-115
1601-0109-G1 4.0x 23 March 2004 URX-123
1601-0109-G2 4.0x 17 May 2004 URX-136
1601-0109-H1 4.2x 30 June 2004 URX-145
1601-0109-H2 4.2x 23 July 2004 URX-151
1601-0109-J1 4.4x 15 September 2004 URX-156 F
1601-0109-J2 4.4x 05 January 2005 URX-173
1601-0109-K1 4.6x 15 February 2005 URX-176
1601-0109-L1 4.8x 05 August 2005 URX-202
1601-0109-M1 4.9x 15 December 2005 URX-208
1601-0109-M2 4.9x 27 February 2006 URX-214

F.1.2 CHANGES TO THE B30 MANUAL

Table F–2: MAJOR UPDATES FOR B30 MANUAL REVISION M2

PAGE PAGE CHANGE DESCRIPTION
(M1) (M2)
Title Title Update Manual part number to 1601-0109-M2

3-28 3-28 Update Updated RS422 INTERFACE section

4-13 4-13 Update Updated INVALID PASSWORD ENTRY sub-section

5-8 5-8 Update Updated PASSWORD SECURITY section

GE Multilin B30 Bus Differential Relay F-1

 F.1 CHANGE NOTES APPENDIX F

Table F–3: MAJOR UPDATES FOR B30 MANUAL REVISION M1

PAGE PAGE CHANGE DESCRIPTION
(L1) (M1)
Title Title Update Manual part number to 1601-0109-M1

2-2 2-2 Update Updated ORDERING section

3-1 3-1 Update Updated PANEL CUTOUT section

4-4 4-4 Update Updated FACEPLATE section

5-15 5-16 Update Updated IEC 61850 PROTOCOL sub-section

5-96 5-97 Update Updated NEUTRAL OVERVOLTAGE sub-section

B-8 B-8 Update Updated MODBUS MEMORY MAP for revision 4.9x

Table F–4: MAJOR UPDATES FOR B30 MANUAL REVISION L1 (Sheet 1 of 2)

PAGE PAGE CHANGE DESCRIPTION
(K1) (L1)
Title Title Update Manual part number to 1601-0109-L1

2-2 2-2 Update Updated SINGLE LINE DIAGRAM to 836719AC

2-3 2-3 Update Updated B30 ORDER CODES table
2-4 2-4 Update Updated ORDER CODES FOR REPLACEMENT MODULES table
2-5 2-5 Update Updated PROTECTION ELEMENTS specifications section
2-7 2-7 Update Updated INPUTS specifications section
2-9 2-9 Update Updated COMMUNICATIONS specifications section

3-5 3-5 Update Updated CONTROL POWER section

3-8 3-8 Update Updated CONTACT INPUTS/OUTPUTS section
F 3-16 3-16 Update Updated CPU COMMUNICATIONS section
3-17 3-18 Update Updated RS485 SERIAL CONNECTION diagram
3-22 3-23 Update Updated G.703 INTERFACE section
3-27 3-28 Update Updated RS422 AND FIBER INTERFACE CONNECTION diagram
--- 3-31 Add Added C37.94SM INTERFACE section

--- 4-12 Add Added INVALID PASSWORD ENTRY section

5-12 5-12 Update Updated DNP PROTOCOL sub-section

-- 5-14 Add Added DNP / IEC 60870-5-104 POINT LISTS sub-section
5-14 5-15 Update Updated IEC 61850 PROTOCOL sub-section
5-17 5-18 Update Updated IEC 60870-5-104 PROTOCOL sub-section
5-52 5-53 Update Updated FLEXLOGIC™ OPERANDS table
--- 5-84 Add Added BREAKER FAILURE section
5-87 5-97 Update Updated SETTING GROUPS section
5-88 5-98 Update Updated SELECTOR SWITCH section
5-106 5-117 Update Updated REMOTE INPUTS section
5-108 5-119 Update Updated DIRECT INPUTS/OUTPUTS section

B-8 B-8 Update Updated MODBUS MEMORY MAP for revision 4.8x

F-2 B30 Bus Differential Relay GE Multilin

 APPENDIX F F.1 CHANGE NOTES

Table F–4: MAJOR UPDATES FOR B30 MANUAL REVISION L1 (Sheet 2 of 2)

PAGE PAGE CHANGE DESCRIPTION
(K1) (L1)

D-9 D-9 Update Updated IEC 60870-5-104 POINT LIST sub-section

E-8 E-8 Update Updated BINARY INPUT POINTS section

E-13 E-9 Update Updated BINARY AND CONTROL RELAY OUTPUT POINTS section
E-15 E-11 Update Updated ANALOG INPUTS section

Table F–5: MAJOR UPDATES FOR B30 MANUAL REVISION K1

PAGE PAGE CHANGE DESCRIPTION
(J1) (K1)
Title Title Update Manual part number to 1601-0115-K1

2-3 2-3 Update Updated B30 ORDER CODES table

3-17 3-17 Update Updated RS485 SERIAL CONNECTION diagram to 827757A7

5-8 5-8 Update Updated DISPLAY PROPERTIES section

5-12 5-12 Update Updated DNP PROTOCOL sub-section
5-14 5-14 Update Updated IEC 61850 PROTOCOL sub-section
5-92 5-93 Update Updated DIGITAL ELEMENTS section
5-102 5-102 Update The LATCHING OUTPUTS section is now a sub-section of the CONTACT OUTPUTS
5-105 5-105 Update Updated REMOTE DEVICES section
5-107 5-107 Update Updated REMOTE OUTPUTS section

B-8 B-8 Update Updated MODBUS MEMORY MAP for firmware release 4.6x

--- C-1 Add Added IEC 61850 appendix

D-4 E-4 Update Updated DNP IMPLEMENTATION section

F
Table F–6: MAJOR UPDATES FOR B30 MANUAL REVISION J1
PAGE PAGE CHANGE DESCRIPTION
(H2) (J1)
Title Title Update Manual part number to 1601-0109-J1

5-14 --- Remove Removed UCA/MMS PROTOCOL sub-section

--- 5-14 Add Added IEC 61850 PROTOCOL sub-section
5-100 5-100 Update Updated VIRTUAL INPUTS sub-section

B-8 B-8 Update Updated MODBUS MEMORY MAP for firmware revision 4.4x

C-1 --- Remove Removed UCA/MMS COMMUNICATIONS appendix

Table F–7: MAJOR UPDATES FOR B30 MANUAL REVISION H2

PAGE PAGE CHANGE DESCRIPTION
(H1) (H2)
Title Title Update Manual part number to 1601-0109-H2

3-20 3-20 Update Updated CHANNEL COMMUNICATIONS OPTIONS table

GE Multilin B30 Bus Differential Relay F-3

 F.2 ABBREVIATIONS APPENDIX F

F.2ABBREVIATIONS F.2.1 STANDARD ABBREVIATIONS

A..................... Ampere FREQ ............. Frequency

AC .................. Alternating Current FSK................ Frequency-Shift Keying
A/D ................. Analog to Digital FTP ................ File Transfer Protocol
AE .................. Accidental Energization, Application Entity FxE ................ FlexElement™
AMP ............... Ampere FWD............... Forward
ANG ............... Angle
ANSI............... American National Standards Institute G .................... Generator
AR .................. Automatic Reclosure GE.................. General Electric
ASDU ............. Application-layer Service Data Unit GND............... Ground
ASYM ............. Asymmetry GNTR............. Generator
AUTO ............. Automatic GOOSE.......... General Object Oriented Substation Event
AUX................ Auxiliary GPS ............... Global Positioning System
AVG ................ Average
HARM ............ Harmonic / Harmonics
BER................ Bit Error Rate HCT ............... High Current Time
BF................... Breaker Fail HGF ............... High-Impedance Ground Fault (CT)
BFI.................. Breaker Failure Initiate HIZ ................. High-Impedance and Arcing Ground
BKR................ Breaker HMI ................ Human-Machine Interface
BLK ................ Block HTTP ............. Hyper Text Transfer Protocol
BLKG.............. Blocking HYB ............... Hybrid
BPNT.............. Breakpoint of a characteristic
BRKR ............. Breaker I...................... Instantaneous
I_0.................. Zero Sequence current
CAP................ Capacitor I_1.................. Positive Sequence current
CC .................. Coupling Capacitor I_2.................. Negative Sequence current
CCVT ............. Coupling Capacitor Voltage Transformer IA ................... Phase A current
CFG................ Configure / Configurable IAB ................. Phase A minus B current
.CFG............... Filename extension for oscillography files IB ................... Phase B current
CHK................ Check IBC................. Phase B minus C current
CHNL ............. Channel IC ................... Phase C current
CLS ................ Close ICA................. Phase C minus A current
CLSD.............. Closed ID ................... Identification
CMND ............ Command IED................. Intelligent Electronic Device
CMPRSN........ Comparison IEC................. International Electrotechnical Commission
CO.................. Contact Output IEEE............... Institute of Electrical and Electronic Engineers
COM............... Communication IG ................... Ground (not residual) current
COMM............ Communications Igd.................. Differential Ground current
COMP ............ Compensated, Comparison IN ................... CT Residual Current (3Io) or Input
CONN............. Connection INC SEQ ........ Incomplete Sequence
CONT ............. Continuous, Contact INIT ................ Initiate
CO-ORD......... Coordination INST............... Instantaneous
F CPU................ Central Processing Unit
CRC ............... Cyclic Redundancy Code
INV................. Inverse
I/O .................. Input/Output
CRT, CRNT .... Current IOC ................ Instantaneous Overcurrent
CSA................ Canadian Standards Association IOV................. Instantaneous Overvoltage
CT .................. Current Transformer IRIG ............... Inter-Range Instrumentation Group
CVT ................ Capacitive Voltage Transformer ISO................. International Standards Organization
IUV................. Instantaneous Undervoltage
D/A ................. Digital to Analog
DC (dc)........... Direct Current K0 .................. Zero Sequence Current Compensation
DD .................. Disturbance Detector kA................... kiloAmpere
DFLT .............. Default kV................... kiloVolt
DGNST........... Diagnostics
DI.................... Digital Input LED................ Light Emitting Diode
DIFF ............... Differential LEO................ Line End Open
DIR ................. Directional LFT BLD ........ Left Blinder
DISCREP ....... Discrepancy LOOP............. Loopback
DIST ............... Distance LPU................ Line Pickup
DMD ............... Demand LRA................ Locked-Rotor Current
DNP................ Distributed Network Protocol LTC ................ Load Tap-Changer
DPO ............... Dropout
DSP................ Digital Signal Processor M.................... Machine
dt .................... Rate of Change mA ................. MilliAmpere
DTT ................ Direct Transfer Trip MAG............... Magnitude
DUTT.............. Direct Under-reaching Transfer Trip MAN............... Manual / Manually
MAX ............... Maximum
ENCRMNT ..... Encroachment MIC ................ Model Implementation Conformance
EPRI............... Electric Power Research Institute MIN ................ Minimum, Minutes
.EVT ............... Filename extension for event recorder files MMI................ Man Machine Interface
EXT ................ Extension, External MMS .............. Manufacturing Message Specification
MRT ............... Minimum Response Time
F ..................... Field MSG............... Message
FAIL................ Failure MTA................ Maximum Torque Angle
FD .................. Fault Detector MTR ............... Motor
FDH................ Fault Detector high-set MVA ............... MegaVolt-Ampere (total 3-phase)
FDL ................ Fault Detector low-set MVA_A ........... MegaVolt-Ampere (phase A)
FLA................. Full Load Current MVA_B ........... MegaVolt-Ampere (phase B)
FO .................. Fiber Optic MVA_C........... MegaVolt-Ampere (phase C)

F-4 B30 Bus Differential Relay GE Multilin

 APPENDIX F F.2 ABBREVIATIONS

MVAR ............. MegaVar (total 3-phase) SAT .................CT Saturation

MVAR_A......... MegaVar (phase A) SBO ................Select Before Operate
MVAR_B......... MegaVar (phase B) SCADA ...........Supervisory Control and Data Acquisition
MVAR_C ........ MegaVar (phase C) SEC ................Secondary
MVARH .......... MegaVar-Hour SEL .................Select / Selector / Selection
MW................. MegaWatt (total 3-phase) SENS ..............Sensitive
MW_A ............ MegaWatt (phase A) SEQ ................Sequence
MW_B ............ MegaWatt (phase B) SIR..................Source Impedance Ratio
MW_C ............ MegaWatt (phase C) SNTP ..............Simple Network Time Protocol
MWH .............. MegaWatt-Hour SRC ................Source
SSB.................Single Side Band
N..................... Neutral SSEL...............Session Selector
N/A, n/a .......... Not Applicable STATS.............Statistics
NEG ............... Negative SUPN..............Supervision
NMPLT ........... Nameplate SUPV ..............Supervise / Supervision
NOM............... Nominal SV ...................Supervision, Service
NSAP ............. Network Service Access Protocol SYNC..............Synchrocheck
NTR................ Neutral SYNCHCHK....Synchrocheck

O .................... Over T......................Time, transformer

OC, O/C ......... Overcurrent TC ...................Thermal Capacity
O/P, Op........... Output TCP.................Transmission Control Protocol
OP .................. Operate TCU ................Thermal Capacity Used
OPER ............. Operate TD MULT ........Time Dial Multiplier
OPERATG...... Operating TEMP..............Temperature
O/S ................. Operating System TFTP...............Trivial File Transfer Protocol
OSI ................. Open Systems Interconnect THD ................Total Harmonic Distortion
OSB................ Out-of-Step Blocking TMR ................Timer
OUT................ Output TOC ................Time Overcurrent
OV .................. Overvoltage TOV ................Time Overvoltage
OVERFREQ ... Overfrequency TRANS............Transient
OVLD ............. Overload TRANSF .........Transfer
TSEL...............Transport Selector
P..................... Phase TUC ................Time Undercurrent
PC .................. Phase Comparison, Personal Computer TUV.................Time Undervoltage
PCNT ............. Percent TX (Tx)............Transmit, Transmitter
PF................... Power Factor (total 3-phase)
PF_A .............. Power Factor (phase A) U .....................Under
PF_B .............. Power Factor (phase B) UC...................Undercurrent
PF_C .............. Power Factor (phase C) UCA ................Utility Communications Architecture
PFLL............... Phase and Frequency Lock Loop UDP ................User Datagram Protocol
PHS................ Phase UL ...................Underwriters Laboratories
PICS............... Protocol Implementation & Conformance UNBAL............Unbalance
Statement
PKP ................ Pickup
PLC ................ Power Line Carrier
UR...................Universal Relay
URC ................Universal Recloser Control
.URS ...............Filename extension for settings files
F
POS................ Positive UV...................Undervoltage
POTT.............. Permissive Over-reaching Transfer Trip
PRESS ........... Pressure V/Hz ................Volts per Hertz
PRI ................. Primary V_0 .................Zero Sequence voltage
PROT ............. Protection V_1 .................Positive Sequence voltage
PSEL .............. Presentation Selector V_2 .................Negative Sequence voltage
pu ................... Per Unit VA ...................Phase A voltage
PUIB............... Pickup Current Block VAB.................Phase A to B voltage
PUIT ............... Pickup Current Trip VAG ................Phase A to Ground voltage
PUSHBTN ...... Pushbutton VARH ..............Var-hour voltage
PUTT.............. Permissive Under-reaching Transfer Trip VB ...................Phase B voltage
PWM .............. Pulse Width Modulated VBA.................Phase B to A voltage
PWR............... Power VBG ................Phase B to Ground voltage
VC...................Phase C voltage
QUAD............. Quadrilateral VCA ................Phase C to A voltage
VCG ................Phase C to Ground voltage
R..................... Rate, Reverse VF ...................Variable Frequency
RCA................ Reach Characteristic Angle VIBR ...............Vibration
REF ................ Reference VT ...................Voltage Transformer
REM ............... Remote VTFF...............Voltage Transformer Fuse Failure
REV................ Reverse VTLOS ............Voltage Transformer Loss Of Signal
RI.................... Reclose Initiate
RIP ................. Reclose In Progress WDG ...............Winding
RGT BLD........ Right Blinder WH..................Watt-hour
ROD ............... Remote Open Detector w/ opt ..............With Option
RST ................ Reset WRT................With Respect To
RSTR ............. Restrained
RTD................ Resistance Temperature Detector X .....................Reactance
RTU................ Remote Terminal Unit XDUCER.........Transducer
RX (Rx) .......... Receive, Receiver XFMR..............Transformer

s ..................... second Z......................Impedance, Zone

S..................... Sensitive

GE Multilin B30 Bus Differential Relay F-5

 F.3 WARRANTY APPENDIX F

F.3WARRANTY F.3.1 GE MULTILIN WARRANTY

GE MULTILIN RELAY WARRANTY

General Electric Multilin Inc. (GE Multilin) warrants each relay it manufactures to be free from
defects in material and workmanship under normal use and service for a period of 24 months from
date of shipment from factory.

In the event of a failure covered by warranty, GE Multilin will undertake to repair or replace the relay
providing the warrantor determined that it is defective and it is returned with all transportation
charges prepaid to an authorized service centre or the factory. Repairs or replacement under war-
ranty will be made without charge.

Warranty shall not apply to any relay which has been subject to misuse, negligence, accident,
incorrect installation or use not in accordance with instructions nor any unit that has been altered
outside a GE Multilin authorized factory outlet.

F GE Multilin is not liable for special, indirect or consequential damages or for loss of profit or for
expenses sustained as a result of a relay malfunction, incorrect application or adjustment.

For complete text of Warranty (including limitations and disclaimers), refer to GE Multilin Standard
Conditions of Sale.

F-6 B30 Bus Differential Relay GE Multilin

 INDEX

Index

FlexLogic™ operands ..................................................... 5-54

Numerics logic .............................................................................. 5-72
Modbus registers ................................................. B-12, B-22
10BASE-F settings ................................................................ 5-69, 5-71
communications options ................................................. 3-18 specifications ................................................................... 2-6
description .................................................................... 3-20 theory of operation ........................................................... 8-1
interface ........................................................................ 3-30 BUS REPLICA MECHANISM ............................................... 8-2
redundant option ........................................................... 3-18 BUS ZONE
settings ......................................................................... 5-11 actual values ................................................................. 6-10
settings ......................................................................... 5-51
BUSBAR EXAMPLE ............................................................ 9-1

A
ABBREVIATIONS ............................................................... F-4 C
AC CURRENT INPUTS .......................................2-8, 3-8, 5-40
AC VOLTAGE INPUTS ................................................ 2-8, 3-9 C37.94 COMMUNICATIONS ........................... 3-31, 3-32, 3-34
ACTIVATING THE RELAY ........................................1-12, 4-11 C37.94SM COMMUNICATIONS ........................................ 3-33
ACTIVE SETTING GROUP ............................................... 5-69 CE APPROVALS .............................................................. 2-12
ACTUAL VALUES CHANGES TO MANUAL ...................................... F-1, F-2, F-3
product information ........................................................ 6-15 CHANNEL COMMUNICATION .......................................... 3-23
status .............................................................................. 6-3 CHANNELS
ALARM LEDs ................................................................... 5-27 banks ................................................................... 5-40, 5-41
ALTITUDE ....................................................................... 2-11 CIRCUIT MONITORING APPLICATIONS ......................... 5-106
ANSI DEVICE NUMBERS ................................................... 2-1 CLEANING ....................................................................... 2-12
APPLICATION EXAMPLES CLEAR RECORDS ...................................................... 5-9, 7-2
breaker trip circuit integrity .......................................... 5-108 CLEAR RELAY RECORDS
busbar ............................................................................ 9-1 Modbus registers .......................................................... B-39
contact inputs .............................................................. 5-113 settings ........................................................................... 5-9
setting groups ............................................................... 9-11 CLOCK
slopes ............................................................................. 9-7 setting date and time ........................................................ 7-2
zoning ............................................................................. 9-3 settings ......................................................................... 5-22
APPROVALS ................................................................... 2-12 COMMANDS MENU ............................................................ 7-1
ARCHITECTURE ............................................................. 5-52 COMMUNICATIONS
AUXILIARY OVERVOLTAGE 10BASE-F ................................................... 3-18, 3-20, 5-11
FlexLogic™ operands .................................................... 5-54 channel ......................................................................... 3-23
logic .............................................................................. 5-98 connecting to the UR ................................................. 1-7, 1-8
Modbus registers ........................................................... B-25 CRC-16 error checking .................................................... B-2
settings ......................................................................... 5-98 dnp .........................................................................5-12, E-1
specifications .................................................................. 2-6 EGD .............................................................................. 5-20
AUXILIARY VOLTAGE CHANNEL ....................................... 3-9 G.703 ............................................................................ 3-26
AUXILIARY VOLTAGE METERING ................................... 6-11 half duplex ...................................................................... B-1
HTTP ............................................................................. 5-18
IEC 60870-5-104 protocol............................................... 5-19
IEC 61850 .......................................................... 5-16, 5-118
B inter-relay communications ............................................. 2-11
Modbus .................................................. 5-11, 5-22, B-1, B-3
BANKS ............................................................. 5-6, 5-40, 5-41
Modbus registers .......................................................... B-15
BATTERY FAIL .................................................................. 7-4
network ......................................................................... 5-11
BIASED DIFFERENTIAL CHARACTERISTIC ....................... 8-4
overview ........................................................................ 1-10
BINARY INPUT POINTS ..................................................... E-8
RS232 ........................................................................... 3-18
BINARY OUTPUT POINTS ................................................. E-9
RS485 ......................................................... 3-18, 3-20, 5-10
BLOCK DIAGRAM .............................................................. 1-3
settings ............................. 5-11, 5-12, 5-16, 5-19, 5-20, 5-22
BLOCK SETTING ............................................................... 5-4
specifications ........................................................ 2-10, 2-11
BREAKER FAILURE
UCA/MMS .................................................................... 5-120
description .................................................................... 5-86
web server ..................................................................... 5-18
determination ................................................................ 5-87
COMTRADE ...................................................................... B-6
logic .................................................... 5-90, 5-91, 5-92, 5-93
CONDUCTED RFI ............................................................ 2-12
main path sequence ...................................................... 5-87
CONTACT INFORMATION .................................................. 1-1
Modbus registers ........................................................... B-23
CONTACT INPUTS
settings .................................................................5-85, 5-88
actual values ................................................................... 6-3
specifications .................................................................. 2-7
dry connections ............................................................. 3-15
BREAKER-AND-A-HALF SCHEME ..................................... 5-6
FlexLogic™ operands ..................................................... 5-56
BRIGHTNESS .................................................................... 5-8
INDEX

Modbus registers ............................... B-10, B-12, B-33, B-35

BUS DIFFERENTIAL
module assignments ...................................................... 3-11
actual values ................................................................. 6-10
settings ....................................................................... 5-112
characteristic ................................................................. 5-70
specifications ................................................................... 2-8

GE Multilin B30 Bus Differential Relay i

 INDEX

thresholds ................................................................... 5-112 DESIGN ............................................................................ 1-3

wet connections ............................................................. 3-15 DEVICE ID ..................................................................... 5-118
wiring ............................................................................ 3-13 DEVICE PROFILE DOCUMENT .......................................... E-1
CONTACT OUTPUTS DIELECTRIC STRENGTH ..........................................2-12, 3-7
actual values ................................................................... 6-4 DIFFERENTIAL
FlexLogic™ operands .................................................... 5-56 application of settings ...................................................... 9-7
Modbus registers .........................................B-10, B-12, B-38 biased............................................................................. 8-4
module assignments ...................................................... 3-11 bus ...............................................2-6, 5-51, 5-69, 5-71, 6-10
settings ....................................................................... 5-115 restraining currents ......................................................... 8-5
wiring ............................................................................ 3-13 DIGITAL COUNTERS
CONTROL ELEMENTS ..................................................... 5-99 actual values ................................................................... 6-5
CONTROL POWER FlexLogic™ operands .....................................................5-54
description....................................................................... 3-8 logic ............................................................................ 5-110
specifications................................................................. 2-10 Modbus registers .................................................... B-9, B-30
CONTROL PUSHBUTTONS settings ........................................................................ 5-109
FlexLogic™ operands .................................................... 5-54 DIGITAL ELEMENTS
Modbus registers ...........................................................B-39 application example ...................................................... 5-107
settings ......................................................................... 5-29 FlexLogic™ operands .....................................................5-54
specifications................................................................... 2-7 logic ............................................................................ 5-106
COUNTERS Modbus registers ........................................................... B-26
actual values ................................................................... 6-5 settings ........................................................................ 5-106
settings ....................................................................... 5-109 DIGITAL INPUTS
CRC ALARM .................................................................... 5-38 see entry for CONTACT INPUTS
CRC-16 ALGORITHM ........................................................ B-2 DIGITAL OUTPUTS
CRITICAL FAILURE RELAY ......................................... 2-9, 3-7 see entry for CONTACT OUTPUTS
CSA APPROVAL .............................................................. 2-12 DIMENSIONS .................................................................... 3-1
CT BANKS DIRECT DEVICES
settings ......................................................................... 5-40 actual values ................................................................... 6-7
CT INPUTS ........................................................ 3-9, 5-6, 5-40 Modbus registers ........................................................... B-14
CT RATIO MATCHING ....................................................... 8-3 settings ........................................................................ 5-121
CT TROUBLE DIRECT I/O
FlexLogic™ operands .................................................... 5-54 see also DIRECT INPUTS and DIRECT OUTPUTS
logic ............................................................................ 5-111 application example ........................................... 5-122, 5-123
Modbus registers ...........................................................B-23 configuration examples ........................ 5-34, 5-35, 5-38, 5-39
settings ....................................................................... 5-111 settings ..............................................5-34, 5-38, 5-39, 5-121
specifications................................................................... 2-6 DIRECT INPUTS
CT WIRING ........................................................................ 3-9 actual values ................................................................... 6-6
CURRENT BANK ............................................................. 5-40 application example ........................................... 5-122, 5-123
CURRENT METERING clearing counters ............................................................. 7-2
actual values ................................................................. 6-10 FlexLogic™ operands .....................................................5-56
Modbus registers ...........................................................B-11 Modbus registers ....................... B-10, B-14, B-28, B-40, B-41
specifications................................................................... 2-8 settings ........................................................................ 5-121
CURVES specifications .................................................................. 2-9
definite time.......................................................... 5-77, 5-94 DIRECT OUTPUTS
FlexCurves™ ........................................................ 5-44, 5-77 application example ........................................... 5-122, 5-123
I2T ................................................................................ 5-77 clearing counters ............................................................. 7-2
IAC ............................................................................... 5-76 Modbus registers ................................ B-10, B-28, B-40, B-41
IEC ............................................................................... 5-75 settings ........................................................................ 5-122
IEEE ............................................................................. 5-74 DIRECTIONAL PRINCIPLE ................................................ 8-7
inverse time undervoltage .............................................. 5-94 DISPLAY ............................................................ 1-10, 4-8, 5-8
types ............................................................................. 5-73 DNA-1 BIT PAIR ............................................................. 5-120
DNP COMMUNICATIONS
binary counters ............................................................. E-10
binary input points ........................................................... E-8
D binary output points ......................................................... E-9
control relay output blocks ............................................... E-9
DATA FORMATS, MODBUS .............................................B-45
device profile document ................................................... E-1
DATE ................................................................................. 7-2
frozen counters ............................................................. E-10
DCMA INPUTS ................................................................. 6-13
implementation table ....................................................... E-4
Modbus registers ..................................................B-13, B-24
Modbus registers ........................................................... B-15
settings ....................................................................... 5-125
settings ..........................................................................5-12
specifications................................................................... 2-8
DUPLEX, HALF ................................................................. B-1
DCMA OUTPUTS
description..................................................................... 3-17
Modbus registers ...........................................................B-28
INDEX

settings ....................................................................... 5-126 E

specifications................................................................. 2-10
DEFINITE TIME CURVE .......................................... 5-77, 5-94 EGD PROTOCOL

ii B30 Bus Differential Relay GE Multilin

 INDEX

actual values ................................................................... 6-7 Modbus registers ................................................. B-27, B-29

Modbus registers ........................................................... B-26 pickup ........................................................................... 5-66
settings ......................................................................... 5-20 scheme logic ................................................................. 5-65
ELECTROSTATIC DISCHARGE ....................................... 2-12 settings ....................................................... 5-64, 5-65, 5-67
ELEMENTS ....................................................................... 5-3 specifications ................................................................... 2-7
ENERVISTA UR SETUP FLEXLOGIC™
creating a site list ............................................................ 4-1 editing with enerVista UR Setup ....................................... 4-1
event recorder ................................................................. 4-2 equation editor ............................................................... 5-63
firmware upgrades ........................................................... 4-2 evaluation ...................................................................... 5-58
installation ...................................................................... 1-5 example ............................................................... 5-52, 5-59
introduction ..................................................................... 4-1 example equation ........................................................... 5-99
oscillography ................................................................... 4-2 gate characteristics ........................................................ 5-57
overview ......................................................................... 4-1 Modbus registers .......................................................... B-19
requirements ................................................................... 1-5 operands .............................................................. 5-53, 5-54
EQUATIONS operators ....................................................................... 5-58
definite time curve .................................................5-77, 5-94 rules .............................................................................. 5-58
FlexCurve™ .................................................................. 5-77 specifications ................................................................... 2-7
I²t curves ....................................................................... 5-77 timers ............................................................................ 5-63
IAC curves .................................................................... 5-76 worksheet ...................................................................... 5-60
IEC curves .................................................................... 5-75 FLEXLOGIC™ EQUATION EDITOR .................................. 5-63
IEEE curves .................................................................. 5-74 FLEXLOGIC™ TIMERS
ETHERNET Modbus registers .......................................................... B-19
actual values ................................................................... 6-6 settings ......................................................................... 5-63
configuration ................................................................... 1-7 FORCE CONTACT INPUTS ............................................ 5-130
Modbus registers ........................................................... B-10 FORCE CONTACT OUTPUTS ......................................... 5-131
settings ......................................................................... 5-11 FORCE TRIGGER ............................................................ 6-14
EVENT CAUSE INDICATORS ............................................. 4-5 FORM-A RELAY
EVENT RECORDER high impedance circuits .................................................. 3-11
actual values ................................................................. 6-14 outputs ........................................................ 3-10, 3-11, 3-15
clearing .................................................................... 5-9, 7-2 specifications ................................................................... 2-9
Modbus ........................................................................... B-7 FORM-C RELAY
Modbus registers ........................................................... B-13 outputs ................................................................. 3-10, 3-15
specifications .................................................................. 2-8 specifications ................................................................... 2-9
via enerVista software ..................................................... 4-2 FREQUENCY METERING
EVENTS SETTING ............................................................. 5-4 actual values ................................................................. 6-11
EXCEPTION RESPONSES ................................................. B-5 Modbus registers .......................................................... B-12
settings ......................................................................... 5-42
specifications ................................................................... 2-8
FREQUENCY TRACKING ........................................ 5-42, 6-12
F FREQUENCY, NOMINAL .................................................. 5-41
FUNCTION SETTING ......................................................... 5-4
F485 ............................................................................... 1-10
FUSE ................................................................................. 2-9
FACEPLATE ...................................................................... 3-1
FACEPLATE PANELS ................................................. 4-4, 4-7
FAST FORM-C RELAY ..................................................... 2-10
FAST TRANSIENT TESTING ............................................ 2-12 G
FAX NUMBERS ................................................................. 1-1
FEATURES ........................................................................ 2-1 G.703 .................................................... 3-25, 3-26, 3-27, 3-30
FIRMWARE REVISION .................................................... 6-15 GE TYPE IAC CURVES .................................................... 5-76
FIRMWARE UPGRADES .................................................... 4-2 GROUND CURRENT METERING ...................................... 6-11
FLASH MESSAGES ........................................................... 5-8 GROUND IOC
FLEX STATE PARAMETERS logic .............................................................................. 5-84
actual values ................................................................... 6-5 Modbus registers .......................................................... B-22
Modbus registers .................................................. B-12, B-26 settings ......................................................................... 5-84
settings ......................................................................... 5-31 GROUND TIME OVERCURRENT
specifications .................................................................. 2-7 see entry for GROUND TOC
FLEXANALOG PARAMETER LIST ...................................... A-1 GROUND TOC
FLEXCURVES™ logic .............................................................................. 5-83
equation ........................................................................ 5-77 Modbus registers .......................................................... B-21
Modbus registers .................................................. B-18, B-30 settings ......................................................................... 5-83
settings ......................................................................... 5-44 specifications ................................................................... 2-6
specifications .................................................................. 2-7 GROUPED ELEMENTS .................................................... 5-69
table ............................................................................. 5-44 GSSE ...........................................................5-119, 5-120, 6-5
FLEXELEMENTS™
actual values ................................................................. 6-12
INDEX

direction ........................................................................ 5-66

FlexLogic™ operands .................................................... 5-54 H
hysteresis ..................................................................... 5-66
HALF-DUPLEX .................................................................. B-1

GE Multilin B30 Bus Differential Relay iii

 INDEX

HTTP PROTOCOL ........................................................... 5-18

HUMIDITY ....................................................................... 2-11 L
LAMPTEST ........................................................................ 7-2
LANGUAGE ....................................................................... 5-8
I LASER MODULE ..............................................................3-24
I2T CURVES .................................................................... 5-77 LATCHING OUTPUTS
IAC CURVES ................................................................... 5-76 application example ........................................... 5-116, 5-117
IEC 60870-5-104 PROTOCOL settings ........................................................................ 5-115
interoperability document ................................................ D-1 specifications .................................................................. 2-9
Modbus registers ...........................................................B-16 LED INDICATORS ....................................... 4-5, 4-6, 4-7, 5-27
settings ......................................................................... 5-19 LED TEST
IEC 61850 PROTOCOL FlexLogic™ operand .......................................................5-56
device ID ..................................................................... 5-119 settings ..........................................................................5-25
DNA2 assignments ...................................................... 5-120 specifications .................................................................. 2-7
Modbus registers .........................................B-30, B-31, B-32 LINK POWER BUDGET .....................................................2-11
remote device settings ................................................. 5-118 LOGIC GATES .................................................................5-58
remote inputs .............................................................. 5-119 LOST PASSWORD ............................................................ 5-7
settings ......................................................................... 5-16
UserSt-1 bit pair .......................................................... 5-120
IEC CURVES ................................................................... 5-75 M
IED .................................................................................... 1-2
IED SETUP ........................................................................ 1-5 MAINTENANCE COMMANDS ............................................. 7-2
IEEE C37.94 COMMUNICATIONS ...................3-31, 3-32, 3-34 MANUFACTURING DATE .................................................6-15
IEEE CURVES ................................................................. 5-74 MEMORY MAP DATA FORMATS ..................................... B-45
IMPORTANT CONCEPTS ................................................... 1-4 MENU HEIRARCHY ...................................................1-11, 4-9
IN SERVICE INDICATOR .......................................... 1-12, 7-3 MENU NAVIGATION ........................................... 1-11, 4-8, 4-9
INPUTS METERING
AC current .............................................................. 2-8, 5-40 conventions .................................................................... 6-8
AC voltage ............................................................. 2-8, 5-41 current ............................................................................ 2-8
contact inputs .................................... 2-8, 3-13, 5-112, 5-130 frequency ........................................................................ 2-8
dcmA inputs ........................................................... 2-8, 3-17 voltage............................................................................ 2-8
direct inputs..................................................................... 2-9 METERING CONVENTIONS .............................................. 6-8
IRIG-B .................................................................... 2-9, 3-21 MODBUS
remote inputs ............................................. 2-9, 5-118, 5-119 event recorder ................................................................. B-7
RTD inputs ............................................................. 2-9, 3-17 exception responses ........................................................ B-5
virtual .......................................................................... 5-114 execute operation ............................................................ B-4
INSPECTION CHECKLIST .................................................. 1-1 flex state parameters ......................................................5-31
INSTALLATION function code 03/04h ....................................................... B-3
communications ............................................................. 3-19 function code 05h ............................................................ B-4
contact inputs/outputs ...................................3-11, 3-13, 3-14 function code 06h ............................................................ B-4
CT inputs ......................................................................... 3-9 function code 10h ............................................................ B-5
RS485 ........................................................................... 3-20 introduction ..................................................................... B-1
settings ......................................................................... 5-39 memory map data formats ............................................. B-45
VT inputs ......................................................................... 3-8 obtaining files ................................................................. B-6
INSTANTANEOUS OVERCURRENT oscillography ................................................................... B-6
see PHASE, GROUND, and NEUTRAL IOC entries passwords ...................................................................... B-7
INSULATION RESISTANCE .............................................. 2-12 read/write settings/actual values ...................................... B-3
INTELLIGENT ELECTRONIC DEVICE ................................. 1-2 settings ................................................................. 5-11, 5-22
INTER-RELAY COMMUNICATIONS .................................. 2-11 store multiple settings ..................................................... B-5
INTRODUCTION ................................................................ 1-2 store single setting .......................................................... B-4
INVERSE TIME UNDERVOLTAGE .................................... 5-94 supported function codes ................................................. B-3
IOC user map .................................................... 5-22, B-10, B-18
see PHASE, GROUND, and NEUTRAL IOC entries MODEL INFORMATION ....................................................6-15
IP ADDRESS ................................................................... 5-11 MODIFICATION FILE NUMBER .........................................6-15
IRIG-B MODULES
connection ..................................................................... 3-21 communications .............................................................3-19
settings ......................................................................... 5-22 contact inputs/outputs .................................. 3-11, 3-13, 3-14
specifications.......................................................... 2-9, 2-10 CT .................................................................................. 3-9
ISO-9000 REGISTRATION ............................................... 2-12 CT/VT ...................................................................... 3-8, 5-6
direct inputs/outputs .......................................................3-24
insertion .......................................................................... 3-4
order codes ..................................................................... 2-5
K ordering .......................................................................... 2-5
INDEX

KEYPAD ................................................................... 1-11, 4-8 power supply ................................................................... 3-7

transducer I/O ................................................................3-17
VT .................................................................................. 3-9

iv B30 Bus Differential Relay GE Multilin

 INDEX

withdrawal ....................................................................... 3-4 definite time ................................................................... 5-77

MOUNTING ....................................................................... 3-1 FlexCurves™ ................................................................. 5-77
I2T ................................................................................ 5-77
IAC ................................................................................ 5-76
IEC ................................................................................ 5-75
N IEEE .............................................................................. 5-74
OVERVOLTAGE
NAMEPLATE ..................................................................... 1-1
auxiliary .................................................................. 2-6, 5-98
NEUTRAL INSTANTANEOUS OVERCURRENT
neutral .................................................................... 2-6, 5-97
see entry for NEUTRAL IOC
NEUTRAL IOC
logic .............................................................................. 5-82
Modbus registers ........................................................... B-21 P
settings ......................................................................... 5-82
specifications .................................................................. 2-6 PANEL CUTOUT ................................................................ 3-1
NEUTRAL OVERVOLTAGE PARITY ............................................................................ 5-10
FlexLogic™ operands .................................................... 5-55 PASSWORD SECURITY ..................................................... 5-7
logic .............................................................................. 5-97 PASSWORDS
Modbus registers ........................................................... B-25 changing ....................................................................... 4-12
settings ......................................................................... 5-97 lost password ......................................................... 4-12, 5-7
specifications .................................................................. 2-6 Modbus .......................................................................... B-7
NEUTRAL TIME OVERCURRENT Modbus registers ........................................ B-12, B-14, B-15
see entry for NEUTRAL TOC overview ........................................................................ 1-12
NEUTRAL TOC security ........................................................................... 5-7
FlexLogic™ operands .................................................... 5-55 settings ........................................................................... 5-7
logic .............................................................................. 5-81 PC SOFTWARE
Modbus registers ........................................................... B-20 see entry for ENERVISTA UR SETUP
settings ......................................................................... 5-81 PERMISSIVE FUNCTIONS ............................................... 5-94
specifications .................................................................. 2-6 PER-UNIT QUANTITY ........................................................ 5-3
NON-VOLATILE LATCHES PHASE ANGLE METERING ................................................ 6-8
FlexLogic™ operands .................................................... 5-55 PHASE CURRENT METERING ......................................... 6-10
Modbus registers ........................................................... B-30 PHASE INSTANTANEOUS OVERCURRENT
settings ......................................................................... 5-68 see entry for PHASE IOC
specifications .................................................................. 2-7 PHASE IOC
FlexLogic™ operands ..................................................... 5-55
logic .............................................................................. 5-80
Modbus registers .......................................................... B-20
O specifications ................................................................... 2-6
PHASE ROTATION .......................................................... 5-42
ONE SHOTS .................................................................... 5-58
PHASE TIME OVERCURRENT
OPERATING TEMPERATURE .......................................... 2-11
see entry for PHASE TOC
OPERATING TIMES ........................................................... 2-6
PHASE TOC
ORDER CODES ........................................... 2-3, 2-4, 6-15, 7-2
FlexLogic™ operands ..................................................... 5-55
ORDER CODES, UPDATING .............................................. 7-2
logic .............................................................................. 5-79
ORDERING ...................................................2-2, 2-3, 2-4, 2-5
Modbus registers .......................................................... B-20
OSCILLATORY TRANSIENT TESTING ............................. 2-12
settings ......................................................................... 5-78
OSCILLOGRAPHY
specifications ................................................................... 2-6
actual values ................................................................. 6-14
PHASE UNDERVOLTAGE
clearing .................................................................... 5-9, 7-2
FlexLogic™ operands ..................................................... 5-55
Modbus ........................................................................... B-6
logic .............................................................................. 5-96
Modbus registers .................................................. B-12, B-16
Modbus registers .......................................................... B-23
settings ......................................................................... 5-23
settings ......................................................................... 5-95
specifications .................................................................. 2-8
specifications ................................................................... 2-6
via COMTRADE ............................................................... B-6
PHONE NUMBERS ............................................................. 1-1
via enerVista software ..................................................... 4-2
POWER SUPPLY
OUTPUT LOGIC ................................................................ 8-9
description ....................................................................... 3-7
OUTPUTS
low range ........................................................................ 2-9
contact outputs ........................................... 3-11, 3-13, 5-115
specifications ................................................................... 2-9
control power ................................................................ 2-10
POWER SYSTEM
critical failure relay .......................................................... 2-9
Modbus registers .......................................................... B-18
Fast Form-C relay ......................................................... 2-10
PREFERENCES
Form-A relay ......................................... 2-9, 3-10, 3-11, 3-15
Modbus registers .......................................................... B-15
Form-C relay .................................................. 2-9, 3-10, 3-15
PRODUCT INFORMATION ........................................6-15, B-8
IRIG-B .......................................................................... 2-10
PRODUCT SETUP ............................................................. 5-7
latching outputs .....................................................2-9, 5-115
PRODUCTION TESTS ...................................................... 2-12
INDEX

remote outputs ............................................................ 5-120

PROTECTION ELEMENTS ................................................. 5-3
virtual outputs ............................................................. 5-117
PU QUANTITY ................................................................... 5-3
OVERCURRENT CURVE TYPES ...................................... 5-73
PUSHBUTTONS, USER-PROGRAMMABLE
OVERCURRENT CURVES

GE Multilin B30 Bus Differential Relay v

 INDEX

see USER-PROGRAMMBLE PUSHBUTTONS SELECTOR SWITCH

actual values ................................................................... 6-5
application example ...................................................... 5-105
FlexLogic™ operands .....................................................5-55
R logic ............................................................................ 5-105
Modbus registers ........................................................... B-29
REAL TIME CLOCK
settings ........................................................................ 5-100
Modbus registers ...........................................................B-16
specifications .................................................................. 2-7
settings ......................................................................... 5-22
timing ............................................................... 5-103, 5-104
REAR TERMINAL ASSIGNMENTS ...................................... 3-5
SELF-TESTS
RECLOSER CURVES .............................................. 5-47, 5-77
description ...................................................................... 7-3
REDUNDANT 10BASE-F .................................................. 3-18
error messages ............................................................... 7-4
RELAY ACTIVATION ........................................................ 4-11
FlexLogic™ operands .....................................................5-57
RELAY ARCHITECTURE .................................................. 5-52
Modbus registers ............................................................. B-8
RELAY MAINTENANCE ...................................................... 7-2
SERIAL NUMBER .............................................................6-15
RELAY NAME .................................................................. 5-39
SERIAL PORTS
RELAY NOT PROGRAMMED ............................................ 1-12
Modbus registers ........................................................... B-15
REMOTE DEVICES
settings ..........................................................................5-10
actual values ................................................................... 6-4
SETTING GROUPS ............................... 5-55, 5-69, 5-99, B-22
device ID ..................................................................... 5-119
SETTINGS, CHANGING ....................................................4-10
FlexLogic™ operands .................................................... 5-56
SIGNAL SOURCES
Modbus registers .........................................B-10, B-12, B-41
description ...................................................................... 5-5
settings ....................................................................... 5-118
metering ........................................................................6-10
statistics .......................................................................... 6-5
SIGNAL TYPES ................................................................. 1-3
REMOTE INPUTS
SINGLE LINE DIAGRAM ............................................. 2-1, 2-2
actual values ................................................................... 6-3
SITE LIST, CREATING ...................................................... 4-1
FlexLogic™ operands .................................................... 5-56
SNTP PROTOCOL
Modbus registers .........................................B-10, B-12, B-42
Modbus registers ........................................................... B-16
settings ....................................................................... 5-119
settings ..........................................................................5-19
specifications................................................................... 2-9
SOFTWARE
REMOTE OUTPUTS
installation ...................................................................... 1-5
DNA-1 bit pair .............................................................. 5-120
see entry for ENERVISTA UR SETUP
Modbus registers ..................................................B-43, B-44
SOFTWARE ARCHITECTURE ............................................ 1-4
UserSt-1 bit pair .......................................................... 5-120
SOFTWARE, PC
REPLACEMENT MODULES ................................................ 2-5
see entry for enerVista UR Setup
RESETTING .......................................................... 5-56, 5-121
SOURCE FREQUENCY ....................................................6-12
RESTRAINING CURRENTS ................................................ 8-5
SOURCE TRANSFER SCHEMES ......................................5-94
REVISION HISTORY ..........................................................F-1
SOURCES
RFI SUSCEPTIBILITY ...................................................... 2-12
description ...................................................................... 5-5
RFI, CONDUCTED ........................................................... 2-12
example use of ...............................................................5-43
RMS CURRENT ................................................................. 2-8
metering ........................................................................6-10
RMS VOLTAGE .................................................................. 2-8
Modbus registers ........................................................... B-18
RS232
settings ..........................................................................5-42
configuration ................................................................... 1-8
SPECIFICATIONS ............................................................. 2-6
specifications................................................................. 2-10
ST TYPE CONNECTORS ..................................................3-20
wiring ............................................................................ 3-18
STANDARD ABBREVIATIONS ........................................... F-4
RS422
STATUS INDICATORS ....................................................... 4-5
configuration ................................................................. 3-28
SURGE IMMUNITY ...........................................................2-12
timing ............................................................................ 3-29
SYMMETRICAL COMPONENTS METERING ...................... 6-8
two-channel application .................................................. 3-28
SYSTEM FREQUENCY .....................................................5-41
with fiber interface ......................................................... 3-30
SYSTEM SETUP ..............................................................5-40
RS485
communications ............................................................. 3-18
description..................................................................... 3-20
specifications................................................................. 2-10 T
RTD INPUTS
actual values ................................................................. 6-13 TARGET MESSAGES ........................................................ 7-3
Modbus registers ..................................................B-13, B-24 TARGET SETTING ............................................................ 5-4
settings ....................................................................... 5-126 TARGETS MENU ............................................................... 7-3
specifications................................................................... 2-9 TCP PORT NUMBER ........................................................5-18
TEMPERATURE, OPERATING ..........................................2-11
TERMINALS ...................................................................... 3-5
TESTING
S force contact inputs ...................................................... 5-130
force contact outputs .................................................... 5-131
INDEX

SALES OFFICE .................................................................. 1-1

lamp test ......................................................................... 7-2
SATURATION DETECTOR ................................................. 8-8
self-test error messages .................................................. 7-3
SCAN OPERATION ............................................................ 1-4
THEORY OF OPERATION ................................................. 8-1
SECURITY ......................................................................... 8-6

vi B30 Bus Differential Relay GE Multilin

 INDEX

TIME ................................................................................. 7-2 specifications ................................................................... 2-7

TIME OVERCURRENT USER-PROGRAMMABLE PUSHBUTTONS
see PHASE, NEUTRAL, and GROUND TOC entries FlexLogic™ operands ..................................................... 5-57
TIMERS ........................................................................... 5-63 Modbus registers .......................................................... B-19
TOC settings ......................................................................... 5-30
ground .......................................................................... 5-83 specifications ................................................................... 2-7
neutral .......................................................................... 5-81 USER-PROGRAMMABLE SELF TESTS
phase ............................................................................ 5-78 Modbus registers .......................................................... B-17
specifications .................................................................. 2-6 settings ......................................................................... 5-28
TRACKING FREQUENCY ........................................ 6-12, B-26 USERST-1 BIT PAIR ...................................................... 5-120
TRANSDUCER I/O
actual values ................................................................. 6-13
settings ............................................................. 5-125, 5-126
specifications ........................................................... 2-8, 2-9 V
wiring ............................................................................ 3-17
VIBRATION TESTING ...................................................... 2-12
TRIP LEDs ...................................................................... 5-27
VIRTUAL INPUTS
TROUBLE INDICATOR ............................................. 1-12, 7-3
actual values ................................................................... 6-3
TYPE TESTS ................................................................... 2-12
commands ....................................................................... 7-1
TYPICAL WIRING DIAGRAM .............................................. 3-6
FlexLogic™ operands ..................................................... 5-56
logic ............................................................................ 5-114
Modbus registers ................................................... B-8, B-35
U settings ....................................................................... 5-114
VIRTUAL OUTPUTS
UL APPROVAL ................................................................ 2-12 actual values ................................................................... 6-4
UNAUTHORIZED ACCESS FlexLogic™ operands ..................................................... 5-56
commands ...................................................................... 5-9 Modbus registers .......................................................... B-36
resetting .......................................................................... 7-2 settings ....................................................................... 5-117
UNDERVOLTAGE VOLTAGE BANKS ............................................................ 5-41
phase ..................................................................... 2-6, 5-95 VOLTAGE DEVIATIONS ................................................... 2-12
UNDERVOLTAGE CHARACTERISTICS ............................ 5-94 VOLTAGE ELEMENTS ..................................................... 5-94
UNIT NOT PROGRAMMED .............................................. 5-39 VOLTAGE METERING
UNPACKING THE RELAY .................................................. 1-1 Modbus registers .......................................................... B-11
UNRETURNED MESSAGES ALARM ................................. 5-39 specifications ................................................................... 2-8
UPDATING ORDER CODE ................................................. 7-2 values ........................................................................... 6-11
URPC VOLTAGE RESTRAINT CHARACTERISTIC ....................... 5-78
see entry for ENERVISTA UR SETUP VT INPUTS ........................................................ 3-9, 5-6, 5-41
USER-DEFINABLE DISPLAYS VT WIRING ........................................................................ 3-9
example ........................................................................ 5-33
invoking and scrolling .................................................... 5-32
Modbus registers .................................................. B-15, B-18
settings .................................................................5-32, 5-33 W
specifications .................................................................. 2-7
WARRANTY .......................................................................F-6
USER-PROGRAMMABLE FAULT REPORT
WEB SERVER PROTOCOL .............................................. 5-18
actual values ................................................................. 6-14
WEBSITE ........................................................................... 1-1
clearing .................................................................... 5-9, 7-2
WIRING DIAGRAM ............................................................. 3-6
Modbus registers .................................................. B-12, B-13
settings ......................................................................... 5-22
USER-PROGRAMMABLE LEDs
custom labeling ............................................................... 4-7 Z
defaults ........................................................................... 4-6
description ...................................................................... 4-6 ZERO SEQUENCE CORE BALANCE .................................. 3-9
Modbus registers ........................................................... B-16 ZONING ............................................................................. 9-3
settings ......................................................................... 5-27
INDEX

GE Multilin B30 Bus Differential Relay vii

 INDEX
INDEX

viii B30 Bus Differential Relay GE Multilin