BSES Bhawan, Nehru Place, New Delhi- 19

NEW GRID

TECHNICAL SPECIFICATION

FOR

SCADA INTERFACE WORK & AUTOMATION

K A SENTIL
Prepared by Rev: 7
KUMARAN

Reviewed & Pramod Kushwaha

Date: 05-02-2019
Approved by
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Volume – I Technical Specification for SCADA interface work & Automation

1.0 INTENT OF SPECIFICATION:

This specification is intended to cover the supply and execute work related to interface of all
electrical equipments with RTU panel complete with all materials and accessories for efficient
and trouble free operation. In the event of any discrepancy with the listed documents, the
stipulation of this specification shall govern.

2.0 SCOPE OF WORK

For substation, it is proposed to lay and terminate panel wirings / control cables if any
between the outdoor equipments such as CT, PT, Circuit Breaker, Isolators, 11 KV
Switchgear, 66,33,11 KV Control & Relay Panels, Power Transformer & its sensors – OTI,
WTI, TPI, AVR, etc, REGDA relay, Capacitor Bank,NIFPS,Smoke Detectors and Battery
Charger.

The scope of work under this category would include:

 Supply of SCADA materials - Bay Control Units, Remote Terminal Units with Basic + PLC
Licenses (Basic License - IEC 870-5-101,103,104, Modbus Ethernet and Serial, IEC

61850-8-1,IEC -104 Master ,IEC 104 Slave + PLC License),Panels for RTU,Data
Concentrator Units,Ethernet Switches with panels,MFM,Cables- FO, CAT-6, RS485,
Control Cables,Connectors and GPS for time synchronization should be in SCADA
vendor’s scope.

 Installation,Testing & Commissioning of SCADA equipments.

 Laying and Termination of armored Communication cables (Ethernet, Fiber Optic Patch
Cards/Cable,RS 485 cables) between grid devices (Numerical Relays/BCPU,
Transformer Monitoring Modules, Smoke detector, NIFPS panel, MFM, Battery Charger)
to RTU/DCU/Gateway.

 Laying and termination of control cables between grid equipments (control and relay
panel, NIFPS, Battery Units) to RTU for hardwired signals.

 Installation of cable trays with accessories or trench as required for the cabling work.

 Preparation of cable schedule, Wiring diagrams,Training documents according to the site

configuration and Interconnection as built drawings.

 Separate earthing bus bars to be provided for RTU panel and it will be directly connected
to grid earthing.Earth BAR material should be Copper.
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Volume – I Technical Specification for SCADA interface work & Automation

 Seprate earth pit with connections for Electronic cards,gateway,Switches,DCU.,etc..

earthing.

 All internal wiring between BCU and C&R Panel terminals, All Numerical relays,MFM
(Multifunctional meters) and other grid equipment integration should be under SCADA
vendor’s scope.

 Hardware & software integration of RTU, Bay Control Units along with other equipments
viz. Battery Chargers, Multi Function Meters, Fire Fighting System Signals, Transformer
relays (for OTI, WTI, TPI, AVR, etc.),Smoke Detector Panels, Numerical Relays,
11&33&66KV Control and Relay panel signals etc. shall be in Vendor’s scope.

 FAT and Training arrangements for BSES SCADA team – Travel ,Boarding,
accommodation and local conveyance etc..shall be under SCADA Vendor’s Scope.

2.1 Cables
The following types of cables / wirings will be required for extending signals and
commands. Tagging is mandatory for all types of cables. Heat shrinking ferrule sleeves with
printed ferrules to be used for identifying cables & Signals.

 2.5 mm2, multi-stranded flexible copper wire, FRLS 1.1KV HRPVC for AC & DC Supply &
1.5 mm2 multi strand cables for other internal wiring for RTU.
 Red(P)and Black(N) color cable core to be used for AC and DC wiring.
 Fiber Optic Cables (GLASS&PLASTIC Types) & Ethernet cables (CAT6) with conduit
pipe for internal connections and Armored Cables for external connections.
 2 C X 2.5 MM2 cables for external AC / DC Power Supply
 16 C x 1.5 mm2 for DI (Digital input)
 3P X 1.5 mm2 for DO (Digital output)
 2P X 0.5 mm2 Screened Armored PVC cable for external (RTU to BCUs
/MFM/BATT.CHG/Transformer Monitoring Devices) RS 485 connections.
The supplied cable shall be as a latest IS, also refer control cable specification.

 Cable Gland

Double Compression cable glands (PVC for RS 485 cables & Brass for Control Cables) of
different sizes for cable entry into the DAU & DCU Panels

 Cable Trays and NS cable Support

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Volume – I Technical Specification for SCADA interface work & Automation

Perforated / ladder type (galvanized Iron) with cover for laying the cables.

2.2 Multifunction Meters (Accuracy – 0.5)

To extend the current / voltage / active and reactive power, power factor, etc. to RTU, MFMs,
installed in the C & R panel, should be integrated. (Make: RISHABH or Equivalent with
MODBUS Protocol). The outputs of these meters (in groups of 5) connections should be
made using twisted pair screened cable (Typically 22gauge Belden 8761 or equivalent) & two
wires (A and B) connections are daisy chained together and integrated with RTUs. All
hardware’s or protocol converters for having Modbus Protocol output should be in Vendor’s
scope.

These should be installed in C & R Panel individually for each feeder/ breakers. All CT & PT
wirings to MFMs and its Configuration should be in Vendor‘s scope.

For the protection of MFMs and RTU cards against Surges and electrical leakages, it is
necessary to install Surge Protection Devices in RTU or C&R Panel and placed in between
RTU & MFM serial loops. The typical diagram for this connection is mentioned in the System
Architecture diagram. (5 MFMs per loop with SPD) MFM should be powered through Grid
Battery Voltage (220 Volt or 50 Volts DC).

The following parameters of MFM must be available for communication with RTU.

 Phase Voltages (L1-N, L2-N, L3-N)

 Line Voltages (L1-L2, L2-L3, L1-L3)
 Line Currents (IL1 , IL2, IL3)
 Active Power & Reactive Power
 Maximum Demand (KW) & Frequency
 Power factor
 Active Energy
 THD mean current & THD mean Voltage
 Neutral Current.
 Phase Angles
Approved Makes – RISH 3440 and Conzerv EM 6400NG

2.3 Numerical Relays with BCU or Bay Control Protection Units for all feeders (11,33,66KV)

Numerical Relays & Bay Control Units should be integrated with Remote Terminal Units. All
hardware’s and protocol converters if required for compatibility with SCADA shall be in
Vendor’s scope.
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Volume – I Technical Specification for SCADA interface work & Automation

The respective BCUs of individual Relays/Breakers will be connected to Data concentrator

Unit/Remote Terminal Units through IEC 61850 compatible industrial grade switches over
IEC 61850 protocol (Dual Ports with PRP & RSTP protocols required to form a Ring or
PRP Networks b/w relay to relay connections).
The respective BCU,BCPU & Numerical Relays must have dual redundancy
communication ports (Ethernet port-RJ45) with PRP & RSTP protocols for SCADA
connections.
Hot Standby/Dual Power Supply Unit & Redundancy in power source for Numerical
Relays,BCU & BCPU - Possibility to increase the BCU,BCPU & Numerical Relays availability
by having a second power supply card in case the first one fails , if any one Power supply
card fails the other one should keep the bay control unit continuous live.
Data Base File must be downloadable and Uploadable from BCPU and BCU.

The following signals are to be taken from Numerical Relays to the BCUs through internal
hard wiring. This list is indicative and signals should not be limited to this. Additional signals
can be taken based on this. – Refer Para 2.8 for detail signals list with data format
(DPI,DCO,SPI,SCO,Measured Values) types.

 Online Currents / Voltage & Relay General trip signal

 All breaker,Isolators,Control & Relay Panel indications and commands
 Fault current and phase indication of faulty phase viz. R,Y,B, Earth, Unbalance(O/C
& E/F Relay).
 Fault Differential and Bias current in Line and Transformer Differential Relay
 Fault voltage and phase indication of faulty phase viz. R,Y,B (Voltage Protection
Relay).
 Post fault currents (R, Y, B phase separately) measured value & Relay Internal Fault
 Fault distance (in case of distance relays - R, Y, B Phase separately)
 Unbalance Current (in case of neutral displacement relay of capacitor feeders).

2.4 Transformer Signal

OTI, WTI, TPI, AVR and Transformer auxiliary protection signals should be integrated with an
RTU through Ethernet communication (RS 485 cables) via TMD (REGDA, A-EBERLE relays)
having IEC 61850 Protocol output.
Relays must have dual redundancy communication ports (Ethernet port-RJ45) & TMM
must have the option of RSTP and PRP Protocols for SCADA Connections.
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Volume – I Technical Specification for SCADA interface work & Automation

All field installations of these sensors and its wiring/cabling and configuration along with
hardware’s or protocol converters, if any, should be in Contractor‘s scope. - Refer Para 2.8
for detail Transformer & Transformer Monitoring Device signal’s list with data types.

2.5 Battery Charger

All signals of Battery Chargers should have MODBUS Protocol output and integrated with an
RTU through serial communication (RS 485) cables.
Laying communication cables through conduit pipe and battery charger signals (Soft & Hard
Signals) integration with an RTU shall be in Vendor’s Scope. - Refer Para 2.8 for detail
Battery Charger signal's list with data types.

2.6 Data Concentrator Unit/Gateway & Remote Terminal Units

For extending the signals from the grid to the Master Control Centre & Backup Control
Centre, BCUs and RTUs are to be installed. BCUs needs to be initially physically integrated
with Numerical relays of respective breakers to enable soft signals and commands for
breakers to be configured there and respectice BCU or BCPU integrated with Remote
Terminal Units through IEC – 61850 protocol. However the options for IEC-60870-103
protocol along with the MODBUS protocol option is required. BCU/BCPU BCUs can be of
ABB, Siemens,Schneider Electric, etc ., make is depending on the type/ make of switch
gears.Remote Terminal Units need to be installed for interface between the BCUs and
Control Centers (Main and Backup) through IEC – 60870 – 104 Protocol. The size of
RTU will depend on the size of the substation, no. of the feeders/ number of signals and
command outputs along with sufficient spares (20%) for future requirement.

All associated equipments and Supply of accessories including software &Operating tool /
multiple user licenses for RTU & BCU, MCBs for DC and AC Supply, DC to DC Converter (in
case station battery voltage level is 220 volts DC), etc. should be in Vendor’s scope.

Hardware & software integration of RTUs, BCU along with other equipments viz. Battery
Chargers, Multi Function Meters, Fire Fighting Systems, Signals, Transformer relays (for OTI,
WTI, TPI, AVR, etc.), Numerical Relays, etc. should be in Vendor’s scope.

In case of more than one BCPU,RTU,DATA Concentrator than these units must be able to
communicate with other units on internal local IPs (Ex – 192.168.0.1) other than LAN IP(Ex-
10.125.107.1) series.
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Volume – I Technical Specification for SCADA interface work & Automation

Hot redundancy is required for Main Processor cards, rack/board and Gateway for MCC &
BCC Communications.Each main processor must have two Ethernet ports dedicated for
communication with SCADA servers over IEC 60870-104 protocol. First card will be live and
2nd card will be hot standby. Communication switchover between either cards in case of
failure.
Main Processor cards along with Rack for MCC communication should be separate from the
IO cards.
Data Base File must be downloadable and Uploadable from RTU,CPU and Gateway.
Approved RTU makes – ABB and Siemens (AK3).
Note : System shall be approved if they are agree to fulfill the following terms &
Conditions,
 AMC period should be given 3 years along with this proposal.
 AMC period should be started after handovering the system to BSES.
 During AMC period all the issues pertaiting to RTU/Gateway/BCU should be
handled by OEM at site(this included unlimited site visit)
 5 Year replacement warranty is applicable for all OEM for Electronic cards &
Gateway Units…If any hardware (or) Software fails during this period will be
rectified by OEM.

RTU,Data Concentrator Unit Features & Performance capabilities

2.6.1 RTU,DCU Size and Expandability

20% Spare for RTU,DCU - Provision for 20 % (Basic IO Count +20% Spare) of the total DI /
DO signals (hard/soft) as a spare should be made available for future requirement.

Spare Ports – 20% Spare ports (Minimum – 3 to 4 No’s Serial ports are essential) for IEC
103/Mod Bus Protocol Connections

20% Spare for BCU,BCPU - Each Control and Relay panel BCU must have 20% (Basic +
20% Spare) of the particular bay DI/DO signals as a spare should be available.

Panel Size & Hardware Capacity - The RTU panel sizing should be capable of
accommodating additional 50% of the basic I/O counts by way of addition of hardware such
as modules, racks, panels, Terminal Blocks of basic I/O counts.

Software Capacity - The RTU software and database generation should be sized to
accommodate for additional 50% of the basic I/O count without requiring software or
database regeneration or License.

2.6.2 Remote database, downloading of RTU from master station/SCADA control center.
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Volume – I Technical Specification for SCADA interface work & Automation

2.6.3 RTU shall have the capability of automatic start-up and initialization following restoration of
power after an outage without the need for manual intervention. All restarts shall be reported
to the connected master stations.

2.6.4 Act as a data concentrator on IEC60870-5-101/104/MODBUS/IEC 61850 protocols and

Support for IEC 60870-5-103, IEC 60870-5-101, IEC 61850,MODBUS TCP IP and RS485
Modbus RTU protocols & ability to act as a gateway for Numerical relays.

2.6.5 Security

As the SCADA system will use public domain, such LAN/VSAT/GPRS/CDMA etc. therefore it
is mandatory to guard the data/ equipment from intrusion/damage/breach of security & shall
have SSL/VPN based security.

2.6.6 Internal battery backup to hold data in SOE buffer memory & also maintaining the time &
date.

2.6.7 RTU must have the capability of time synchronization with a GPS receiver and the GPS at
the control room will be used for this synchronization purpose. In case of failure of the GPS
receiver, the RTUs time synchronization should be through the Master’s SCADA clock.

2.6.8 GPS for Time Synchronization - The RTU must have inbuilt (or) external GPS with antenna
& internal real time clock to synchronize the IEDs connected to it over their respective
protocol. GPS must have dual redundant LAN port for time synchronizations.

2.6.9 Main Processor(CPU in RTU & Gateway ) HOT Retundancy for MCC & BCC
communication

Main processor (DCU) /RTU should have adequate capacity for data handling / processing
and main processor/CPU must have required number of communication ports for
simultaneous communication with Master Stations (MCC & BCC), /MFTs and RTU
configuration & maintenance tool.RTU main processor and Gateway must have HOT
redundancy features for control center communications.

2.6.10 Hot Standby/Dual Power Supply Unit & Redundancy in power source for RTU and
BCU/BCPU - Possibility to increase the RTU,BCU main rack availability by having a second
power supply card in case the first one fails , if any one Power supply card fails the other
one should keep the system continuous live.

2.6.11 CPU/RTU Soft Configuration Future (Communicate to multiple master stations

simultaneously on IEC60870-5-104.)
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Volume – I Technical Specification for SCADA interface work & Automation

RTU/DAU must have multiple location (minimum 5 Locations) data transmission facility VAZ
Master Control Centre, Backup Control Centre, etc.

2.6.12 Protection Devices for RTU,BCPU – All modules (all Digital, Analog Input modules) and
ports (Serial and Ethernet ports) must have in-built or external surge protection devices
and optical isolation

2.6.13 Diagnostic Software & Multi user tool/License for RTU/(Numerical Relay) BCU -

Diagnostic Software tool with licensed version shall be provided to continuously monitor the
operation of the RTU and report RTU hardware errors to the connected master stations. The
software shall check for memory, processor, and input/output ports errors and failures of
other functional areas defined in the specification of the RTU. If any system tries to
connect to RTU for download/ Upload files,itshould be stored as a log in RTU.

2.6.14 RTU Panels

At least 50% of the space inside each enclosure shall be unused (spare) space that shall be
reserved for future use. The Contractor shall provide required panels conforming to IEC 529
for housing the RTU modules/racks, relays etc. and other required hardware. The panels
shall meet the following requirements:

 Shall be free standing, floor mounted and height shall not exceed 2200 mm.
 RTU Panel should have air conditioner and should be mounted on side wall of RTU
panel with temperature/humidity control facility. FAN with Filters shall be considered for
for back up cooling.
 All doors and removable panels shall be fitted with long life rubber beading.
 All non load bearing panels/doors ,top and bottom portion, rear cover shall be fabricated
from minimum 2.0 mm thickness steel sheet and all load bearing panels, frames, top &
bottom panels shall be fabricated from minimum 3.0 mm thickness steel sheet.

 Shall have maintenance access to the hardware and wiring through lockable full height
doors.
 Shall have the provisions for bottom cable entry.
 All panels shall be supplied with 230V AC, 50 Hz, single-phase switch and 15/5A duplex
socket arrangement for the maintenance.
 All panels shall be provided with an internal maintenance lamp, space heaters and gaskets.
 All panels shall be indoor, dust-proof with rodent protection, and meet IP54 class of Ingress
protection.
 There shall be no sharp corners or edges. All edges shall be rounded to prevent injury.
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Volume – I Technical Specification for SCADA interface work & Automation

 Document Holder shall be provided inside the cabinet to keep test report, drawing,
maintenance register etc.
 All materials used in the enclosures including cable insulation or sheathing, wire troughs,
terminal blocks, and enclosure trims shall be made of flame retardant material and shall not
produce toxic gases under fire conditions.

2.6.15 RTU Grounding

The safety ground shall be isolated from the signal ground and shall be connected to the
ground network. Safety ground shall be a copper bus bar. The contractor shall connect the
panel’s safety ground to the grid grounding network. Separate grounding is created for
communication equipments and Signal ground shall be connected to the communication
equipment signal ground.

2.7 Ethernet /Fiber Switch

The Ethernet/Fiber optic switches Should be a managed switch and are intended to be
installed in the control room and shall be complaint to IEC-61850 electrical substation
networks and IEEE 1613 standards. Provisions for additional feeders on the Ring
Configuration should be provided on the same switch.

Laying of Ethernet/Fiber cables for relay/BCU port to the RTU via switch through conduit pipe
and integration with an RTU shall be in Vendor’s Scope.

Switch, Standard Features

Switch design should withstand for power substation automation applications that operate in
extremely harsh environments (High and medium voltage S/Stn environments) and it also
withstands vibration, electrical surges, fast transients, electrostatic discharge, and
extreme temperatures and humidity.

Switch features and configuration should be easy to user interface and it must directly
integrate with any other IEC-61850 devices. Shall be managed type and have KEMA
certifications for IEC 61850.

The FO switch shall support Multimode fiber and single mode fiber in 10/100Mbps ports on
an SFP (simple form factor pluggable), for ease of functionality and maintenance.

Retundancy Ring : Dual Ring to be consider between Ethernet switches for

maintaining redundancy network.
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Volume – I Technical Specification for SCADA interface work & Automation

Hot Standby/Dual PSU & Redundancy in power source - Possibility to increase the switch
availability by having a second power source in case the first one fails & should be available
with 48VDC.Each PSU should be connected with a different power source, if any one power
source or Power supply card fails then other one should keep the switch continuous
operation.

20% Spare ports - Each switch must have 20% spare ports for future/back up
requirements.

Link Failure contact alarm - Failure contact alarm shall be achieved by hardware contact
that is activated when a link problem occurs.

Logs and alarms with Time Stamp - Statistics about link status alarms are to be stored with
the accurate timestamp duly tracing all events.

Advanced security features - The FO switches shall support different user levels with
different passwords, including the facility to work with different VLANs, following the
802.1Q standard, port security based on MAC addresses, possibility to disable unused ports,
authentication protocols shall be provided.

High Speed Implementation of RSTP protocol - The FO switches shall support STP and
RSTP protocols, and shall facilitate for recovery and the fault recovery times shall be within 5
-10msec per switch, always fulfilling the RST protocol.

Time Synchronization to RTU/Server and Connected IED/BCU - The FO switch shall

have an internal clock and shall be synchronized from a network SNTP/NTP server, so all
time stamped events shall be with a reliable time reference.

Tools with License - Diagnostics tool, other necessary tools with a multi user license to be
provided along with the switch.

Mounting Options - Switch should be DIN Rail Mountable & also need to quote for Optional
Wall/Rack Mountable kit.

Local USB port for emergency boot is Mandatory.

Network based distributed security by having a firewall on each port of the switch for all the
standard Industrial protocol like IEC-61850 should be available.
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Volume – I Technical Specification for SCADA interface work & Automation

The FO switch shall have the facility of Port mirroring and the user shall configure one port to
replicate traffic flows of different ports, so the system administrator can monitor the incoming,
outgoing, or all kinds of traffic that is going through the ports under study.

ITU-T G.8032 support for Ethernet Ring redundancy, ensuring fast failure detection is
preferred.

They FO switches shall sustain the stringent levels in temperature range and
electromagnetic immunity defined in the 61850-3, but also the advanced functional
requirements defined for operation with other IEC-61850 devices. The Switch should be
certified on IEC-61850, functional & Environmental specifications by KEMA.

The FO switches shall have advanced security features to be implemented to avoid

unauthorized access to the system Such as RADIUS/TACACS & VPN gateway support with
IP Sec & SSH.

2.8 SIGNAL LIST (11/33/66KV)

List of Abbreviations
AI - Analog Input/Analog Values
MV - Measured Value
MFM - Multi Function Meter
DCO - Double Command Output
DPI - Double Point Indication
SCO - Single Command Output
SPI - Single Point Indication
RTU - Remote Terminal Units
BCU - Bay Control Units

Signals - 11KV Out Going Feeders Digital Digital Out Put Digital Input Additional Signal
Protocol
N.Relay
Input/AI soft soft through Hard Wire to signals Type
through N.Relay/BCU RTU Hard wire to
N.Relay/BCU RTU for backup

Breaker ON √
√
IEC-61850 with Dual Communication Ports

Breaker OFF √ DPI

Trip Ckt Healthy -1 & 2 √ SPI
Spring Charge √ SPI
Breaker in service √ SPI
Breaker in Test SPI
Auto Trip(86) Operated √ √ SPI
Panel DC Fail √ SPI
L/R Switch in Local SPI
√
L/R Switch in SCADA √ SPI
Relay Int Fault. √ SPI
Over Current Operated √ SPI
Earth Fault Operated √ SPI
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Volume – I Technical Specification for SCADA interface work & Automation

BKR Close COMMAND

√ √
BKR Open COMMAND DCO
AutoTrip(86) relay reset from Remote √ SCO

3Phase R,Y,B - Current &

Voltage,Active
√
Power,Reactive Power,Power
Factor,Max.Demand,Neu.Current
AI/MV
Fault current and phase indication of
faulty phase viz. R,Y,B, Earth,
Unbalance(O/C & E/F
√
Relay).Disturbance Records,
Fault Graphs for Remote diagnosis
purpose
AI
13 DI + Analog ,
Total Signals - BCPU & RTU Measurand 3 DO 2DI 5DI + 2 DO
Values
Essential inbuilt Spare in BCPU,BCU 3 DI 2 DO

Signals - 11KV Incomers Digital Digital Out Put Digital Additional Signal
Input/AI soft soft through Input/Output signals Type

Protocol
N.Relay
through N.Relay/BCU Hard Wire to Hard wire to
N.Relay/BCU RTU RTU for backup

Breaker ON √
√ DPI
Breaker OFF √
Trip Ckt Healthy -1 & 2 √ SPI
Spring Charge √ SPI
Breaker in service SPI
√
Breaker in Test SPI
Auto Trip(86) Operated √ √ SPI

IEC-61850 with dual Communication Ports

VT fuse Blown - Metering. √ SPI
VT fuse Blown - Protection √ SPI
Panel DC Fail √ SPI
L/R Switch in Local SPI
√
L/R Switch in SCADA √ SPI
Relay Int Fault. √ SPI
Over Current Operated(All stages) √ SPI
Earth Fault Operated (All stages) √ SPI
Under Voltage Prot.Operated √ SPI
Over Voltage Prot.Operated √ SPI
REF Operated √ SPI
BKR Close COMMAND √
√
BKR Open COMMAND √ DCO
AutoTrip(86) relay reset from Remote √ SCO

3Phase R,Y,B - Current &

Voltage,Active
√
Power,Reactive Power,Power
Factor,Max.Demand,Neu.Current
AI/MV
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Volume – I Technical Specification for SCADA interface work & Automation

Fault current and phase indication of

faulty phase viz. R,Y,B, Earth,
Unbalance(O/C & E/F Relay).Fault
voltage and phase indication of faulty
√ AI
phase viz. R,Y,B (Voltage Protection
Relay). Disturbance Records,
Fault Graphs for Remote diagnosis
purpose

17 DI + Analog ,
Total Signals - BCPU & RTU Measurand 3 DO 2DI 5DI + 2 DO
Values
Essential inbuilt Spare in BCPU,BCU 3 DI 2 DO

Digital Digital Additional

Protocol
N.Relay
Input/AI soft Digital Out Put Input/Output signals
Signals - 11KV Bus Coupler
through soft through Hard Wire to Hard wire to Signal
N.Relay/BCU N.Relay/BCU RTU RTU for backup Type
Breaker ON √
√
Breaker OFF √ DPI
Trip Ckt Healthy -1 & 2 √ SPI
Spring Charge √ SPI
Breaker in service SPI
√
Breaker in Test SPI
Auto Trip(86) Operated √ √ SPI
Panel DC Fail √ SPI
L/R Switch in Local SPI

IEC-61850 with Dual Communication Ports

√
L/R Switch in SCADA √ SPI
Relay Int Fault. √ SPI
PT MCB - Metering operated √ SPI
PT MCB - Protection operated √ SPI
Over Current Operated √ SPI
Earth Fault Operated √ SPI
BKR Close COMMAND
√ √
BKR Open COMMAND DCO

Fault current and phase indication of

faulty phase viz. R,Y,B, Earth,
Unbalance(O/C & E/F
√
Relay).Disturbance Records,
Fault Graphs for Remote diagnosis
purpose
AI
14DI + Analog ,
Total Signals - BCPU & RTU Measurand 3 DO 2DI 5DI + 2 DO
Values
Essential inbuilt Spare in BCPU,BCU 3 DI 2 DO
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Volume – I Technical Specification for SCADA interface work & Automation

Additional
Digital Digital

Protocol
N.Relay
signals
Signals - 11KV Capacitors Input/AI soft Digital Out Put Input/Output Hard wire to
through soft through Hard Wire to RTU for backup Signal
N.Relay/BCU N.Relay/BCU RTU Type
Breaker ON √
√
Breaker OFF √ DPI
Bank ISO ON
√
Bank ISO OFF DPI
Trip Ckt Healthy -1 & 2 √ SPI
Spring Charge √ SPI
Breaker in service SPI
√
Breaker in Test SPI
Master Trip(86) Operated √ √ SPI
Bus PT fuse Blown - Metering. √ SPI
Bus PT fuse Blown - Protection √ SPI
Panel DC Fail √ SPI
L/R Switch in Local √ SPI
L/R Switch in SCADA √ √ SPI
Over Current Operated √ SPI
Earth Fault Operated √

IEC-61850 with Dual Communication Ports

SPI
Under Voltage Prot.Operated √ SPI
Over Voltage Prot.Operated √ SPI
Neg.Phase.sequence Operated √ SPI
Timer Relay operated/Normal √ DPI
Relay Int Fault. √ SPI
BKR Close COMMAND
√ √
BKR Open COMMAND DCO
BANK ISO OPN
√
BANK ISO CLS DCO
Master trip (86)reset from remote √ SCO
3Phase R,Y,B -
Current&Voltage,Reactive √
Power,Neu.Current AI/MV

Fault current and phase indication of

faulty phase viz. R,Y,B, Earth,
Unbalance(O/C & E/F Relay).Fault
voltage and phase indication of faulty
√
phase viz. R,Y,B (Voltage Protection
Relay). Disturbance Records,
Fault Graphs for Remote diagnosis
purpose
AI
19 DI + Analog ,
Total Signals - BCPU & RTU Measurand 5 DO 2DI 5DI + 2 DO
Values
Essential inbuilt Spare in BCPU,BCU 3 DI 2 DO

Additional
Digital Digital Spare signals
Protocol

Signal
Signals - 33 & 66KV Incomers/Out Going Input/AI soft Digital Out Put Input/Output (Hard wire to
Type
through soft through Hard Wire to RTU for
N.Relay/BCU N.Relay/BCU RTU backup)
unicati

Breaker ON √
Comm
Dual
with

√ DPI
Breaker OFF √
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

Front Bus (89A) ISO ON(In-Case of O/D)

√ DPI
Front Bus (89A) ISO OFF (In-Case of O/D)
Rear Bus (89B) ISO ON (In-Case of O/D)
√ DPI
Rear Bus (89B) ISO OFF (In-Case of O/D)
LINE ISO (89L) ON (In-Case of O/D)
√ DPI
LINE ISO (89L) OFF (In-Case of O/D)
Earth Switch (89LE) -1 ON (In-Case of O/D)
√ DPI
Earth Switch (89LE) -1 OFF (In-Case of O/D)
Earth Switch (89LE) - 2 ON (In-Case of O/D)
√ DPI
Earth Switch (89LE) - 2 OFF (In-Case of O/D)
Breaker in service (In-case of I/D BKR) √ SPI
Breaker in Test (In-case of I/D BKR) √ SPI
Trip coil Ckt Healthy - 1 & 2 √ SPI
Spring Charge √ SPI
Master trip(86) Operated √ √ SPI
SF6 Pressure Low & SF6 Lock Out √ SPI
VT fuse Fail √ SPI
Panel DC Fail √ SPI
L/R Switch in Local √
DPI
L/R Switch in Remote √ √
LBB Operated √ SPI
Relay Int Fault. √ SPI
Over Current Operated (All stages) √ SPI
Earth Fault Operated (All stages) √ SPI
DIFF.Prot Operated √ SPI
DIST.Ptot Operated √ SPI
BKR CLS COMMAND √
√ DCO
BKR OPN COMMAND √
Front Bus (89A) ISO OPNCOMMAND
(In-Case of O/D)
√ DCO
Front Bus (89A) ISO CLS COMMAND
(In-Case of O/D)
Rear Bus (89B) ISO CLS COMMAND
(In-Case of O/D)
√ DCO
Rear Bus (89B) ISO OPN COMMAND
(In-Case of O/D)
LINE ISO (89L) OPN COMMAND
(In-Case of O/D)
√ DCO
LINE ISO (89L) CLS COMMAND
(In-Case of O/D)
Master Trip(86) relay reset from Remote √ SCO
3Phase R,Y,B -Current&Voltage,Active&Reactive
√ AI/MV
Power,PowerFactor,Max.Demand,Neu.Current etc
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

Fault current and phase indication of faulty phase

viz. R,Y,B, Earth, Unbalance(O/C & E/F
Relay).Fault voltage and phase indication of faulty
phase viz. R,Y,B (Voltage Protection Relay). Fault
√ AI
Differential and Bias current in Line and
Transformer Differential Relay ,Fault distance (in
Distance Relay) ,Disturbance Records,
Fault Graphs for Remote diagnosis purpose

29 DI + Analog ,
Total Signals - BCPU & RTU Measurand 9 DO 2DI 5DI + 2 DO
Values
Essential inbuilt Spare in BCPU,BCU 6 DI 3 DO

Additional
Digital Digital

Protocol
signals Signal
Signals - 33 & 66KV Transformer Input/AI soft Digital Out Put Input/Output Hard wire to
through soft through Hard Wire to Type
RTU for backup
N.Relay/BCU N.Relay/BCU RTU
Breaker ON √
√ DPI
Breaker OFF √
Front Bus (89A) ISO ON(In-Case of O/D)
√ DPI
Front Bus (89A) ISO OFF (In-Case of O/D)
Rear Bus (89B) ISO ON (In-Case of O/D)
√ DPI
Rear Bus (89B) ISO OFF (In-Case of O/D)
TRF ISO (89T) ON (In-Case of O/D)
√ DPI
TRF ISO (89T) OFF (In-Case of O/D)
Earth Switch (89LE) -1 ON (In-Case of O/D)
√ DPI
Earth Switch (89LE) -1 OFF (In-Case of O/D)
Earth Switch (89LE) - 2 ON (In-Case of O/D)

IEC-61850 with dual Communication Ports

√ DPI
Earth Switch (89LE) - 2 OFF (In-Case of O/D)
Breaker in service (In-case of I/D BKR)
√ DPI
Breaker in Test (In-case of I/D BKR)
Trip coil Ckt Healthy - 1 & 2 √ SPI
Spring Charge √ SPI
Auto Trip(86) Operated √ √ SPI
Differential Operated √ SPI
LBB Operated √ SPI
REF/SEF Prot Operated √ SPI
SF6 Pressure Low & SF6 Lock Out √ SPI
Panel DC Fail √ SPI
L/R Switch in Local √
DPI
L/R Switch in Remote √ √
Relay Int Fault. √ SPI
Over Current Operated √ SPI
Earth Fault Operated √ SPI
BKR CLS COMMAND √
√ DCO
BKR OPN COMMAND √
Front Bus (89A) ISO OPNCOMMAND
(In-Case of O/D)
√ DCO
Front Bus (89A) ISO CLS COMMAND
(In-Case of O/D)
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

Rear Bus (89B) ISO CLS COMMAND

(In-Case of O/D)
√ DCO
Rear Bus (89B) ISO OPN COMMAND
(In-Case of O/D)
Trf ISO (89T) OPN COMMAND
(In-Case of O/D)
√ DCO
Trf ISO (89T) CLS COMMAND
(In-Case of O/D)
Mastertrip (86) relay reset from Remote √ SCO
3Phase R,Y,B -Current&Voltage,Active&Reactive
√ AI/MV
Power,PowerFactor,Max.Demand,Neu.Current

Fault current and phase indication of faulty phase

viz. R,Y,B, Earth, Unbalance(O/C & E/F
Relay).Fault voltage and phase indication of faulty
phase viz. R,Y,B (Voltage Protection Relay). Fault
√ AI
Differential and Bias current in Line and
Transformer Differential Relay ,Fault distance (in
Distance Relay) ,Disturbance Records,
Fault Graphs for Remote diagnosis purpose

28 DI + Analog ,
Total Signals - BCPU & RTU Measurand 9 DO 2DI 5DI + 2 DO
Values
Essential inbuilt Spare in BCPU,BCU 6 DI 3 DO

Digital

Protocol
Digital Digital Out Put Input/Output Analog Input Signal
Transformer - RTCC/A-Eberle Signals
Input/AI soft soft through Hard Wire to soft through Type
through TMM TMM RTU TMM
A-Eberle Unit Faulty/DC Fail √ SPI
Oil Temp Alarm √ SPI
Oil Temp trip √ SPI
Winding Temp Alarm √ SPI
Winding Temp Trip √ SPI
Buchholz Alarm √ SPI

IEC-61850 with Dual Communication Ports

Buchholz Trip √ SPI
PRV TRIP √ SPI
OLTC OSR √ SPI
MOG/LOW Oil level Alarm √ SPI
SPR Trip √ SPI
OSR Main Tank √ SPI
L/R Switch in Local √
DPI
L/R Switch in Remote √
Auto Mode √
DPI
Manual Mode √
Fan Fail √ SPI
Tap Changer Fail √ SPI
OLTC Out of Step/Stuck Up/Motor trip √ SPI
Tap Rise/Tap Low Command √
DCO/RCO
Tap Rise/Tap Low Command √
Oil Temp √ AI
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

Winding Temp √ AI
Tap Position √ AI
3 Analog ,
Total Signals - BCPU & RTU 19 DI 2 Command 1 DI Measurand
Values

Essential inbuilt Spare in BCPU,BCU 2 DI 1 DO

Additional
Digital Digital

Protocol
signals Signal
Signals - 33 & 66KV BusCoupler Input/AI soft Digital Out Put Input/Output Hard wire to
through soft through Hard Wire to Type
RTU for backup
N.Relay/BCU N.Relay/BCU RTU
Breaker ON √
√ DPI
Breaker OFF √
Front Bus (89A) ISO ON(In-Case of O/D)
√ DPI
Front Bus (89A) ISO OFF (In-Case of O/D)
Rear Bus (89B) ISO ON (In-Case of O/D)
√ DPI
Rear Bus (89B) ISO OFF (In-Case of O/D)
Earth Switch (89AE-1) - ON (In-Case of O/D) √
DPI
Earth Switch (89AE-1) - OFF (In-Case of O/D)
Earth Switch (89AE-2) - ON (In-Case of O/D)
DPI
Earth Switch (89AE-2) - OFF (In-Case of O/D)
Earth Switch(89BE-3) - ON (In-Case of O/D) √
DPI
Earth Switch(89BE-3) - OFF (In-Case of O/D)
Earth Switch(89BE-4) - ON (In-Case of O/D)
DPI
Earth Switch(89BE-4) - OFF (In-Case of O/D)

IEC-61850 with Dual Communication Ports

Breaker in service (In-case of I/D BKR)
√ DPI
Breaker in Test (In-case of I/D BKR)
Trip coil Ckt Healthy - 1 & 2 √ SPI
Spring Charge √ SPI
Auto Trip(86) Operated √ √ SPI
SF6 Pressure Low √ SPI
SF6 Lock Out √ SPI
VT fuse-1 Blown √ SPI
VT fuse-2 Blown √ SPI
Panel DC Fail √ SPI
L/R Switch in Local √
DPI
L/R Switch in Remote √ √
LBB Operated √ SPI
Relay Int Fault. √ SPI
Over Current Operated (All stages) √ SPI
Earth Fault Operated(All stages) √ SPI
BKR CLS COMMAND √
√ DCO
BKR OPN COMMAND √
Front Bus (89A) ISO OPNCOMMAND
(In-Case of O/D)
√ DCO
Front Bus (89A) ISO CLS COMMAND
(In-Case of O/D)
Rear Bus (89B) ISO CLS COMMAND
(In-Case of O/D)
√ DCO
Rear Bus (89B) ISO OPN COMMAND
(In-Case of O/D)
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

AutoTrip(86) relay reset from Remote √ SCO

3Phase R,Y,B - Current ,BUS PT-01 & BUS PT02
√ AI/MV
3Phase votages.

Fault current and phase indication of faulty phase

viz. R,Y,B, Earth, Unbalance(O/C & E/F
Relay).Fault voltage and phase indication of faulty
phase viz. R,Y,B (Voltage Protection Relay). Fault
√ AI
Differential and Bias current in Line and
Transformer Differential Relay ,Fault distance (in
Distance Relay) ,Disturbance Records,
Fault Graphs for Remote diagnosis purpose

31 DI + Analog ,
Total Signals - BCPU & RTU Measurand 9 DO 2DI 5DI + 2 DO
Values
Essential inbuilt Spare in BCPU,BCU 6 DI 3 DO

Additional
Digital Digital

Protocol
signals Signal
Signals - 33 & 66KV CAP Bank Input/AI soft Digital Out Put Input/Output
Hard wire to Type
through soft through Hard Wire to
RTU for backup
N.Relay/BCU N.Relay/BCU RTU
Breaker ON √
√ DPI
Breaker OFF √
Front Bus (89A) ISO ON(In-Case of O/D)
√ DPI
Front Bus (89A) ISO OFF (In-Case of O/D)
Rear Bus (89B) ISO ON (In-Case of O/D)
√ DPI
Rear Bus (89B) ISO OFF (In-Case of O/D)
CAP Bank ISO ON (In-Case of O/D)
√ DPI
CAP Bank ISO OFF (In-Case of O/D)

IEC-61850 With Dual Communication Ports

Earth Switch ON (In-Case of O/D)
√ DPI
Earth Switch OFF (In-Case of O/D)
Trip coil Ckt Healthy - 1 & 2 √ SPI
Spring Charge √ SPI
Auto Trip(86) Operated √ √ SPI
SF6 Pressure Low & SF6 Lock Out of all chambers √ SPI
VT fuse Blown √ SPI
Cap Discharge Time √ SPI
Netural Displacement √ SPI
Panel DC Fail √ SPI
L/R Switch in Local/Remote √ √ DPI
LBB Operated √ SPI
Relay Int Fault. √ SPI
Over Current Operated √ SPI
Earth Fault Operated √ SPI
Under Voltage Prot.Operated √ SPI
Over Voltage Prot.Operated √ SPI
BKR CLS COMMAND √
√ DCO
BKR OPN COMMAND √
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

Front Bus (89A) ISO OPNCOMMAND

(In-Case of O/D)
√ DCO
Front Bus (89A) ISO CLS COMMAND
(In-Case of O/D)
Rear Bus (89B) ISO CLS COMMAND
(In-Case of O/D)
√ DCO
Rear Bus (89B) ISO OPN COMMAND
(In-Case of O/D)
CAP Bank ISO OPN COMMAND
( In-case of O/D)
√ DCO
CAP Bank ISO CLS COMMAND
( In-case of O/D)

3Phase R,Y,B - Current&Voltage,Reactive

√ AI/MV
Power,Neu.Current

Fault current and phase indication of faulty phase

viz. R,Y,B, Earth, Unbalance(O/C & E/F
Relay).Fault voltage and phase indication of faulty
phase viz. R,Y,B (Voltage Protection Relay). Fault
√ AI
Differential and Bias current in Line and
Transformer Differential Relay ,Fault distance (in
Distance Relay) ,Disturbance Records,
Fault Graphs for Remote diagnosis purpose

26 DI + Analog ,
Total Signals - BCPU & RTU Measurand 9 DO 2DI 5DI + 2 DO
Values
Essential inbuilt Spare in BCPU,BCU 6 DI 3 DO

Additional
Digital Digital

Protocol
signals Signal
Signals - BUS PT-1&2 Input/AI soft Digital Out Put Input/Output Hard wire to
through soft through Hard Wire to Type
RTU for backup
N.Relay/BCU N.Relay/BCU RTU
BUS A (89A) ON
√ DPI
BUS A (89A) OFF

IEC-61850 with Dual Communication Ports

BUS B (89B) ON
√ DPI
BUS B (89B) OFF
Earth Switch (89LE) - 1 ON
√ DPI
Earth Switch (89LE) - 1 OFF
Earth Switch (89LE) - 2 ON
√ DPI
Earth Switch (89LE) - 2 OFF
BUS-A ISO OPN COMMAND
√ DCO
BUS-A ISO CLS COMMAND
BUS-B ISO OPN COMMAND
√ DCO
BUS-B ISO CLS COMMAND

Total Signals - BCPU & RTU 8 DI 4 DO

Essential Spare in BCPU,BCU 2 DI 1 DO

BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

Signals - Smoke Detector - ALL Sensors,Manual Call Soft Signal Protocol

Points Integration with RTU over MODBUS TCPIP Signals Type
Protocol.
All Sensors Alarm operated Signals
√
( 10 to 20 Sensors) SPI
MODBUS TCP/IP Protocol with
All Manual Call Points - MCP-1,MCP-2.etc… √
SPI Dual Communication Ports

Signals - Battery Digital Input/AI AI from Signal Protocol

soft through RTU Transducer(4
to 20MA) /AI
Hard wire
Charger Type
signal to RTU
CHG A AC M/F CUM AC U/V √ SPI
CHG A AC OVER VOLTAGE √ SPI
CHG A RECTIFIER FUSE BLOWN √ SPI
CHG A FILTER FUSE BLOWN √ SPI
CHG A DC MCB TRIP/OFF √ SPI
CHG A DC UNDER VOLTAGE √ SPI
CHG A DC OVER VOLTAGE √ SPI
CHG A FLOAT √ SPI
CHG A BOOST √ SPI
CHG A DC FAIL √ SPI
CHG B AC M/F CUM AC U/V √ SPI
CHG B AC OVER VOLTAGE √ SPI

Modbus Protocol with Dual ports

CHG B RECTIFIER FUSE BLOWN √ SPI
CHG B FILTER FUSE BLOWN √ SPI
CHG B DC MCB TRIP/OFF √ SPI
CHG B DC UNDER VOLTAGE √ SPI
CHG B DC OVER VOLTAGE √ SPI
CHG B FLOAT √ SPI
CHG B BOOST √ SPI
CHG B DC FAIL √ SPI
BATTERY MCCB TRIP/OFF √ SPI
DC system Earth √ SPI
Insulation fault √ SPI
Charger A AC INPUT CURRENT √ AI
Charger A AC INPUT VOLTAGE √ AI
Charger A DC OUTPUT CURRENT √ AI
Charger A DC OUTPUT VOLTAGE √ AI
Charger B AC INPUT CURRENT √ AI
Charger B AC INPUT VOLTAGE √ AI
Charger B DC OUTPUT CURRENT √ AI
Charger B DC OUTPUT VOLTAGE √ AI
Battery Current √ AI
Battery Load Voltage √ AI
Battery Voltage from Transducer √ AI 4 to 20
Battery Current from Transducer √ AI MA O/P
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

Signals - LT Board Digital Input MFM Signal

Hard Wire to data Type &
RTU through Meter OP
Modbus –
protocol Modbus
with Dual
Ports.
LT AC Fail √ SPI
R,Y,B Phase Current √ AI

Signals - Fire Fighting(All Digital Input Signal

Transformers) Hard Wire to Type
RTU
SYSTEM OPERATED √ SPI
SYSTEM OUT OF SERVICE √ SPI
TCIV CLOSED √ SPI
FIRE DETECTOR TRIP √ SPI
N2 CYLINDER PRESSURE LOW √ SPI
FIRE SYSTEM ALARM √ SPI
DC SUPPLY FAIL √ SPI

MFM - BUS PT -1 ,2 Signals (Front Data Type Protocol

& Rear BUS)

R-Phase Current MV/MFI

Y-Phase Current MV/MFI
B-Phase Current MV/MFI
Neutral Current MV/MFI Modbus
R-Y Phase Voltage MV/MFI
Y-B Phase Voltage MV/MFI
B-R Phase Voltage MV/MFI

MFM - Signals - All Feeders Data Type Protocol

(Including Bus Section/Coupler OF
11/33/66 KV)
R-Phase Current MV/MFI
Y-Phase Current MV/MFI
B-Phase Current MV/MFI
Neutral Current MV/MFI
R-Y Phase Voltage MV/MFI
Y-B Phase Voltage MV/MFI
B-R Phase Voltage MV/MFI
Active Power MV/MFI Modbus
Active Energy MV/MFI
Reactive Power MV/MFI
Power Factor MV/MFI
Maximum Demand MV/MFI
Phase angle 1 MV/MFI
Phase angle 2 MV/MFI
Phase angle 3 MV/MFI
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

THD Mean Current MV/MFI

THD Mean Voltage MV/MFI

Note1 : Suitable Heavy Duty Relay /Contactor’s with free Wheeling Diode to be placed in
between RTU- DO card & Trip/Close Coil circuits of respective breakers for all breaker
/Isolator open & Close circuits..It should be placed either at RTU (or) Breaker panel end.Its
Potential free contact will be connected in the Closing/Tripping Coil Circuits.

Note 2: SF6 Low/Lockout of all chamber signal to be wired up to RTU.

2.8.1.Comments -
Analog signals (Fault Current levels,Disturbance records, Fault graphs for remote diagnosis, etc,)
from Numerical relays needs to be confirmed by vendor before finalize the tender documents.

All the above mentioned signals(Refer Signal List -2.8) including Notifier /Smoke Detector Signal
are compulsory and additional signal (10%) will be considered during detailed engineering.

Following indications data format should be configured as a DPS (Double point Status) in
Relay(BCPU).
 All Feeders Circuit Breaker ON & Circuit Breaker OFF
 All Feeders BUS Isolators (89A,89B,89L,89T) - ON & OFF
 All Earth Switches ON & OFF

Following command data format should be configured as a DPC (Double point control) in
Relay(BCPU).
 All Feeders Circuit Breaker - Open & Close
 All Feeders BUS Isolators (89A,89B,89L,89T) - Open & Close
 All Earth Switches – Open & Close.

3.0 Key Points -

1 All SCADA equipments viz DAU / DCU, MFM, Battery Charger, A-Eberle relays, etc. Should be
powered through auxiliary supply of 48 V (or) 220 Volt DC.

2 Space for Energy Meter – Only Space (Length - 185 mm & Height - 256 mm with CT, PT,
Auxiliary Supply terminals & wiring) without cut out is required to install energy meters.

3 Power Supply for Routers/ Gateway (IT Equipments) through an existing battery bank via DC to
DC Converters (Input: 48 VDC/220 VDC, Output: 12 Volt DC) or as per the requirements of
Routers.

Converter 01 Speifications : Input 220 Volt DC & Output 48 Volt DC

Converter 02 Specifications:Input 220 Volt DC (or) 48 Volt DC & OutPut 12 Volt DC

BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

4 Any other wiring / cabling if required due to non availability of serial communication
/MODBUS/IEC 61850 protocols (with justified reason) should be hardwired and that is in
Contractor’s scope.

5 Suitable transducers with an output of 4-20 mA have to be installed in the RTCC /Battery
charger if required and the outputs of these transducers should be extended to terminal for
further extension to the RTU.

6 STATION BUS : Topology

 Dual Homing (or) Redundant Ring with Ehernet/Copper Cable – From BCPU,BCU
to Switch

 Redundant Ring with Fiber Optic Cable – From Switch to RTU/Gateway.

 Note : Dual Homing (or) Redunt Ring Network topology will be decided during
the detail engineering stage.

7 The C & R ,RTCC,Battery Charger Panel should have additional spare contacts (potential free)
for all SCADA signals – Refer Signal List 2.8

8 Data Base File must be downloadable and Uploadable from RTU,CPU,BCPU,BCU and
Gateway.

9 Warranty (5 Years) for SCADA products - All Supplied SCADA material should cover
warranty for the duration of 5 years & Warranty period will start after successful
commissioning of the SCADA equipments at site. If any SCADA materials found faulty
during warranty period should be replaced within two weeks.

10 Training should be provided on configuration, installation, commissioning aspects of

RTU,DCU,BCU and Numerical Relay - BCPU at your training/work center to the BSES SCADA
team (4 to 5 persons ) & Training Expenses (Air & Local Travel, boarding and Lodging for 4
to 5 persons) at factory/training center(4 days) comes under Vendor’s scope.

Training documents to be submitted for approval & Documents should contain all the
necessary installations,connections and Data Base development procedure & further
trouble shooting procedure,etc..shall also be provided in the manual.

11 Antivirus/Cyber Security solution for Gateway/RTU unit need to be considered.

12 FAT expenses for BSES SCADA team (2 Persons) – Air & Local Travels, boarding and
Lodging to be arranged by vendor during FAT inspections.Complete expenditure (Air & Local
Travel, boarding and Lodging) comes under vendor scope.
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

13 Loose Spares (10%) - loose Spare Materials for following items with below mentioned quantity
to be supplied for emergency back up/maintenance purpose.

 CPU (Main Processor) Card in DCU,RTU – 1 No

 CPU(Main Processor Module in BCPU) – 1 No

 Gateway / Gateway CPU– 1 No

 RTU Rack – 1 No

 BCPU Rack – 1 No

 Serial Server if any – 1 No

 Communication Module for IEC-103 & Modbus Communications – 1 No

 CPU in Bay Control Units – 10% of supplied qty.

 Communication Extended Module/Serial Ports for Modbus & IEC-103 protocols–

10%

 DO Contactots – 10% of supplied qty.

 DI/DO/AI/ Cards – 10% of the total IO signals

 PSU Cards in RTU – 1 No

 PSU Cards in BCPU – 1 No

 PSU Cards in Switches – 5% of supplied qty.

 Ethernet Switches (9 ,16 & 24 Ports) – 1 No’s

 Ethernet Switches (16 & 24 Ports) – 2 No’s

 LIU Unit – 1 No

 Fiber Optic Patch Cards with Connectors - 20% of total installed cables.

 MFM – 5% of Supplied Qty.

 DC to DC converters if any for RTU Supply – 2 No.

14 Protection devices for all SCADA Equipmentes –

 Surge Protection devices installation between RTU & MFM Serial loops.

 SPD for Main DC Source.

 HDR/Inter Posing Relay for all Digital Output Signal’s.

 All modules (All Digital, Analog Input modules in BCPU and RTU) and ports (Serial
and Ethernet ports) must have in-built or external surge protection devices and optical
isolation.
BSES Bhawan, Nehru Place, New Delhi- 19

Volume – I Technical Specification for SCADA interface work & Automation

15 Local HMI shoid be consider along with RTU :

 Human machine interface (HMI) with control software package, which shall contain an
extensive range of system monitoring and data acquisition (SCADA) functions.

 Incase of failure of communication equipments then DR shall be extracted from HMI for
further diagonosis purpose only.So,It will not be used as a Gateway for control center
data process.

16 All the above features are indicative only and detailed engineering and deviation will be
analyzed just before actual procurement and with discussion through a supplier/ vendor.

4.0 System Architecture Diagram

The Tentative System Architecture diagram is enclosed for reference. It will be revised during
the approval stage of drawings..

5.0 DEVIATIONS

Deviation from this specification, if any, shall be clearly brought out in the offer. Unless the
owner explicitly accepts such deviations, it shall be considered that the offer fully complies with
the specification.No deviations will be acceptable post order.