Instruction Book

Part 2 of 2

M-3425A
Generator Protection
 PROTECTION

Generator Protection
M-3425A
Integrated Protection System® for Generators of All Sizes

Unit shown with optional M-3925A Target Module and M-3931 HMI (Human-Machine Interface) Module.

• Exceeds IEEE C37.102 and Standard 242 requirements for generator

protection
• Protects generators of any prime mover, grounding and connection type
• Provides all major protective functions for generator protection including
Out-of-Step (78), Split-Phase Differential (50DT), Under Frequency Time
Accumulation (81A), Inadvertent Energizing (50/27) and Turn-to-Turn Fault
(59X)
• Expanded IPScom® Communications Software provides simple and logical
setting and programming, including logic schemes
• Simple application with Base and Comprehensive protection packages
• Load encroachment blinders and power swing blocking for system
backup protection (21) to enchance security during system abnormal
conditions
• Options: Ethernet Connection, Field Ground/Brush Lift-Off
Protection (64F/B), Sync Check (25), 100% Stator Ground
Fault Protection by low frequency injection (64S) and
Expanded I/O (15 additional Output Contacts and 8 additional
Control/Status Inputs)
M-3425A Generator Protection Relay

Protective Functions Optional Protective Functions

Base Package • Sync Check with Phase Angle, ΔV and ΔF
• Overexcitation (V/Hz) (24) with dead line/dead bus options (25)
• Phase Undervoltage (27) • Field Ground (64F) and Brush Lift Off (64B)
(Includes M-3921 Field Ground Coupler)
• Directional power sensitive triple-setpoint Re-
verse Power, Low Forward Power or Over- • 100% Stator Ground protection by low fre-
power detection, one of which can be used for quency injection (64S). The following equip-
sequential tripping (32) ment is supplied with the 64S option:
• Dual-zone, offset-mho Loss of Field (40), which – 20 Hz signal generator (430-00426)
may be applied with undervoltage controlled – Band-pass Filter (430-00429)
accelerated tripping – 400/5 A 20 Hz CT (430-00428)
• Sensitive Negative Sequence Overcurrent pro-
tection and alarm (46) Standard Features
• Instantaneous Phase Overcurrent (50) • Eight programmable outputs and six pro-
grammable inputs
• Inadvertent Energizing (50/27)
• Oscillographic recording with COMTRADE
• Generator Breaker Failure (50BF) or BECO format
• Instantaneous Neutral Overcurrent (50N) • Time-stamped target storage for 32 events
• Inverse Time Neutral Overcurrent (51N) • Metering of all measured parameters and
• Three-phase Inverse Time Overcurrent calculated values
(51V) with voltage control and voltage restraint. • Three communications ports (two RS-232
• Phase Overvoltage (59) and one RS-485)
• Neutral Overvoltage (59N) • M-3820D IPScom® Communications Soft-
• Multi-purpose Overvoltage (59X) ware
• VT Fuse-Loss Detection and blocking • Includes MODBUS and BECO 2200
(60FL) protocols
• Residual Directional Overcurrent (67N) • Standard 19" rack-mount design (vertical
• Four-step Over/Underfrequency (81) mounting available)
• Removable printed circuit board and power
• Phase Differential Current (87)
supply
• Ground (zero sequence) Differential Cur-
rent (87GD) • 50 and 60 Hz models available
• Both 1A and 5 A rated CT inputs available
• IPSlogic takes the contact input status and
function status and generates outputs by • Additional trip inputs for externally connected
employing (OR, AND, and NOT) boolean devices
logic and a timer. • IRIG-B time synchronization
Protective Functions • Operating Temperature: –20° C to +70° C
Comprehensive Package • Sequence of Events Log
The Comprehensive Package includes all Base • Trip Circuit Monitoring
Package functions, as well as the following: • Breaker Monitoring
• Three-zone Phase Distance protection for • Four Setpoint Groups
phase fault backup protection (21). Zone three Optional Features
can be used for Out-of-Step Blocking. Load
• Redundant power supply
encroachment blinders can be applied.
• M-3925A Target Module
• 100% Stator Ground Fault protection using Third
Harmonic Neutral Undervoltage (27TN) or (59D) • M-3931 Human-Machine Interface (HMI)
Third Harmonic Voltage Differential (ratio) Module
• Stator Overload (49) (Positive Sequence • RJ45 Ethernet port utilizing MODBUS over TCP/
Overcurrent) IP and BECO2200 over TCP/IP protocols
• Definite Time Overcurrent (50DT) can be used • RJ45 Ethernet port utilizing IEC 61850 Protocol
for split phase differential • M-3801D IPSplot® PLUS Oscillograph Analy-
• Out-of-Step (78) sis Software
• UnderFrequency Accumulation (81A) • Expanded I/O (15 additional outputs and 8
additional inputs)
• Rate of Change of Frequency (81R)

–2–
 M-3425A Generator Protection Relay

PROTECTIVE FUNCTIONS
Device Setpoint
Number Function Ranges Increment Accuracy†
Phase Distance (three-zone mho characteristic)
Circle Diameter #1,#2,#3 0.1 to 100.0 Ω 0.1 Ω 0.1 Ω or 5%
(0.5 to 500.0 Ω) ( 0.5 Ω or 5%)
Offset #1,#2,#3 –100.0 to 100.0 Ω 0.1 Ω 0.1 Ω or 5%
21 (–500.0 to 500.0 Ω) ( 0.5 Ω or 5%)
Impedance Angle #1,#2,#3 0° to 90° 1° 1°
Load Encroachment Blinder #1,#2,#3
Angle 1° to 90° 1° 1°
R Reach 0.1 to 100 Ω
Time Delay #1,#2,#3 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Out-of-Step Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Overcurrent Supervision 0.1 to 20 A 0.1 A 0.1 A or 2%
(0.02 to 4 A) 0.01 A 0.02 A or 2%
When out-of-step blocking on Zone 1 or Zone 2 is enabled, Zone 3 will not trip and it will be used to detect the
out-of-step condition for blocking Function 21 #1 and/or 21 #2.
Volts / Hz
Definite Time
Pickup #1, #2 100 to 200% 1% 1%
Time Delay #1, #2 30 to 8160 Cycles 1 Cycle 25 Cycles
24
Inverse Time
Pickup 100 to 200% 1% 1%
Characteristic Curves Inverse Time #1–#4 — —
Time Dial: Curve #1 1 to 100 1
Time Dial: Curves #2–#4 0.0 to 9.0 0.1
Reset Rate 1 to 999 Sec. 1 Sec. .02 Sec. or 1%
(from threshold of trip)
The percent pickup is based on nominal VT secondary voltage and nominal system frequency settings. The
pickup accuracy stated is only applicable from 10 to 80 Hz, 0 to 180 V, 100 to 150% V/Hz and a nominal voltage
setting of 120 V.
Phase Undervoltage

Pickup #1, #2, #3 5 to 180 V 1V 0.5 V or 0.5%

27 0.8 V or 0.75%*
Time Delay #1, #2, #3 1 to 8160 Cycles 1 Cycle 1 Cycle or 0.5%**
* When both RMS and Line-Ground to Line-Line VT connection is selected.
**When RMS (total waveform) is selected, timing accuracy is O20 cycles or 1%.

†
Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.

–3–
M-3425A Generator Protection Relay

PROTECTIVE FUNCTIONS (cont.)

Device Setpoint
Number Function Ranges Increment Accuracy†

Third-Harmonic Undervoltage, Neutral

Pickup #1, #2 0.10 to 14.00 V 0.01 V 0.1 V or 1%

Positive Sequence
Voltage Block 5 to 180 V 1V 0.5 V or 0.5%
Forward Under Power Block 0.01 to 1.00 PU 0.01 PU 0.01 PU or 2%
Reverse Under Power Block –1.00 to –0.01 PU 0.01 PU 0.01 PU or 2%
27 Lead Under var Block –1.00 to –0.01 PU 0.01 PU 0.01 PU or 2%
TN Lag Under var Block 0.01 to 1.00 PU 0.01 PU 0.01 PU or 2%
Lead Power Factor Block 0.01 to 1.00 0.01 0.03 PU or 3%
Lag Power Factor Block 0.01 to 1.00 0.01 0.03 PU or 3%
High Band Forward
Power Block 0.01 to 1.00 PU 0.01 PU 0.01 PU or 2%
Low Band Forward
Power Block 0.01 to 1.00 PU 0.01 PU 0.01 PU or 2%
Time Delay #1, #2 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Directional Power

32 Pickup #1, #2, #3 –3.000 to +3.000 PU 0.001 PU 0.002 PU or 2%

Time Delay #1, #2, #3 1 to 8160 Cycles 1 Cycle +16 Cycles or 1%
The minimum Pickup limits are –.002 and +.002 respectively.
The per-unit pickup is based on nominal VT secondary voltage and nominal CT secondary current settings. This
function can be selected as either overpower or underpower in the forward direction (positive setting) or reverse
direction (negative setting). Element #3 can be set as real power or reactive power. This function includes a
programmable target LED that may be disabled.
Loss of Field (dual-zone offset-mho characteristic)

Circle Diameter #1, #2 0.1 to 100.0 Ω 0.1 Ω 0.1 Ω or 5%

(0.5 to 500.0 Ω) ( 0.5 Ω or 5%)
40 Offset #1, #2 –50.0 to 50.0 Ω 0.1 Ω 0.1 Ω or 5%
(–250.0 to 250.0 Ω) ( 0.5 Ω or 5%)
Time Delay #1, #2 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Time Delay with
Voltage Control #1, #2 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Voltage Control 5 to 180 V 1V 0.5 V or 0.5%
(positive sequence)
Directional Element 0° to 20° 1° —
Time delay with voltage control for each zone can be individually enabled.

†
Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.

–4–
 M-3425A Generator Protection Relay

PROTECTIVE FUNCTIONS (cont.)

Device Setpoint
Number Function Ranges Increment Accuracy†

Negative Sequence Overcurrent

Definite Time
Pickup 3 to 100% 1% 0.5% of 5 A
( 0.5% of 1 A)
Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Inverse Time
Pickup 3 to 100% 1% 0.5 % of 5 A
46 ( 0.5% of 1 A)
Time Dial Setting 1 to 95 1 3 Cycles or 3%
(K= I22t)
Definite Maximum
Time to Trip 600 to 65,500 Cycles 1 Cycle 1 Cycle or 1%
Definite Minimum Time 12 Cycles — fixed
Reset Time (Linear) 1 to 600 Seconds 1 Second —
(from threshold of trip)
Pickup is based on the generator nominal current setting.
Stator Overload Protection
Time Constant #1, #2 1.0 to 999.9 minutes 0.1 minutes
49 Maximum Overload Current 1.00 to 10.00 A 0.01 A 0.1 A or 2%
(0.20 to 2.00 A)
Instantaneous Phase Overcurrent

Pickup #1, #2 0.1 to 240.0 A 0.1 A 0.1 A or 3%

50 (0.1 to 48.0 A) ( 0.02 A or 3%)
Time Delay #1, #2 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
When frequency f is < (fnom –5 ) Hz add an additional time of (1.5/f + 0.033) sec to the time delay accuracy.
Breaker Failure

50 Pickup
BF-Ph
50 Phase Current 0.10 to 10.00 A 0.01 A 0.1 A or 2%
BF 50
(0.02 to 2.00 A) ( 0.02 A or 2%)
BF-N
Neutral Current 0.10 to 10.00 A 0.01 A 0.1 A or 2%
(0.02 to 2.00 A) ( 0.02 A or 2%)
Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
50BF can be initiated from designated M-3425A output contacts or programmable control/status inputs.
Definite Time Overcurrent

50 Pickup Phase A #1, #2 0.20 A to 240.00 A 0.01 A 0.1 A or 3%

DT (0.04 A to 48.00 A) ( 0.02 A or 3%)
Pickup Phase B #1, #2 (same as above)
Pickup Phase C #1, #2 (same as above)
Time Delay #1, #2 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
This function uses generator line-side currents.
When 50DT function is used for split-phase differential protection, 50BF, 87, and 87GD functions should not be
used, and the IA, IB and IC inputs must be connected to the split phase differential currents.
†
Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.

–5–
M-3425A Generator Protection Relay

PROTECTIVE FUNCTIONS (cont.)

Device Setpoint
Number Function Ranges Increment Accuracy†

Instantaneous Neutral Overcurrent

Pickup 0.1 to 240.0 A 0.1 A 0.1 A or 3%

50N (0.1 to 48.0 A) ( 0.02 A or 3%)
Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
When the frequency f is < (fnom –5) Hz add an additional time of (1.5/f + 0.033) sec to the time delay accuracy.
Inadvertent Energizing
50
Overcurrent
50/ Pickup 0.5 to 15.00 A 0.01 A 0.1 A or 2%
27 (0.1 to 3.00 A) ( 0.02 A or 2%)
27 Undervoltage
Pickup 5 to 130 V 1V 0.5 V
Pick-up Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Drop-out Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Inverse Time Neutral Overcurrent

Pickup 0.25 to 12.00 A 0.01 A 0.1 A or 1%

(0.05 to 2.40 A) ( 0.02 A or 1%)
51N Characteristic Curve Definite Time/Inverse/Very Inverse/Extremely Inverse/IEC Curves
Moderately Inverse/Very Inverse/Extremely Inverse/IEEE Curves
Time Dial 0.5 to 11.0 0.1 3 Cycles or 3%*
0.05 to 1.10 (IEC curves) 0.01
0.85 to 1.15 (IEEE curves) 0.01
* For IEC Curves the timing accuracy is 5%.
When the frequency f is < (fnom –5 )Hz add an additional time of (1.5/f + 0.033) sec to the time delay accuracy.
Inverse Time Phase Overcurrent, with Voltage Control or Voltage Restraint

Pickup 0.50 to 12.00 A 0.01 A 0.1 A or 1%

(0.10 to 2.40 A) ( 0.02 A or 1%)
Characteristic Curve Definite Time/Inverse/Very Inverse/Extremely Inverse/IEC Curves
51V Moderately Inverse/Very Inverse/Extremely Inverse/IEEE Curves
Time Dial 0.5 to 11.0 0.1 3 Cycles or 3%*
0.05 to 1.10 (IEC curves) 0.01
0.85 to 1.15 (IEEE curves) 0.01
Voltage Control (VC) 5 to 180 V 1V 0.5 V or 0.5%
or
Voltage Restraint (VR) Linear Restraint — —
* For IEC Curves the timing accuracy is 5%.

†
Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.

–6–
 M-3425A Generator Protection Relay

PROTECTIVE FUNCTIONS (cont.)

Device Setpoint
Number Function Ranges Increment Accuracy†

Phase Overvoltage

Pickup #1, #2, #3 5 to 180 V 1V 0.5 V or 0.5%

0.8 V or 0.75%*
59
Time Delay #1, #2, #3 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%**
Input Voltage Select Phase, Positive or Negative Sequence***
* When both RMS and Line-Ground to Line-Line is selected.
** When RMS (total waveform) is selected, timing accuracy is +20 cycles or 1%.
*** When positive or negative sequence voltage is selected, the 59 Function uses the discrete Fourier transform
(DFT) for magnitude calculation, irrespective of the RMS/DFT selection, and timing accuracy is 1 Cycle or 1%.
Positive and negative sequence voltages are calculated in terms of line-to-line voltage when Line to Line is
selected for V.T. Configuration.
Third-Harmonic Voltage Differential Ratio

Ratio (Vx/VN) 0.1 to 5.0 0.1

59D Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Positive Seq Voltage Block 5 to 180 V 1V 0.5 V or 0.5%
Line Side Voltage VX or 3V0 (calculated)
The 59D function with VX cannot be enabled if the 25 function is enabled. The line side voltage can be selected
as the third harmonic of 3V0 (equivalent to VA + VB + VC) or VX.
3V0 selection for line side voltage can only be used with line-ground VT configuration.
Neutral Overvoltage

Pickup #1, #2, #3 5.0 to 180.0 V 0.1 V 0.5 V or 0.5%

59N
Time Delay #1, #2, #3 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%

When 64S is purchased, the 59N Time Delay Accuracy is –1 to +5 cycles.

Multi-purpose Overvoltage

Pickup #1, #2 5.0 to 180.0 V 0.1 V 0.5 V or 0.5%

59X
Time Delay #1, #2 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%

Multi-purpose input that may be used for turn-to-turn stator ground protection, bus ground protection, or as an
extra Phase-Phase, or Phase-Ground voltage input.

VT Fuse-Loss Detection
A VT fuse-loss condition is detected by using the positive and negative sequence components
60 of the voltages and currents. VT fuse-loss output can be initiated from internally generated
FL logic, and/or from input contacts.
Alarm Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Three Phase VT
Fuse Loss Detection Enable/Disable

†
Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.

–7–
M-3425A Generator Protection Relay

PROTECTIVE FUNCTIONS (cont.)

Device Setpoint
Number Function Ranges Increment Accuracy†

Residual Directional Overcurrent

Definite Time*
Pickup 0.5 to 240.0 A 0.1 A 0.1 A or 3%
(0.1 to 48.0 A) ( 0.02 A or 3%)
Time Delay 1 to 8160 Cycles 1 Cycle –1 to +3 Cycles or 1%
67N Inverse Time*
Pickup 0.25 to 12.00 A 0.01 A 0.1 A or 3%
(0.05 to 2.40 A) ( 0.02 A or 3%)
Characteristic Curve Definite Time/Inverse/Very Inverse/Extremely Inverse/IEC Curves
Moderately Inverse/Very Inverse/Extremely Inverse/IEEE Curves
Time Dial 0.5 to 11.0 0.1 3 Cycles or 5%
0.05 to 1.10 (IEC Curves) 0.01
0.5 to 11 (IEEE curves) 0.01

Directional Element
Max Sensitivity Angle (MSA) 0 to 359° 1°
Polarizing Quantity 3Vo (calculated), VN or VX
*Directional control for 67NDT or 67NIT may be disabled.
VX polarization cannot be used if 25 function is enabled.
3Vo polarization can only be used with line-ground VT configuration.
Operating current for 67N can be selected as 3Io (calculated) or IN (Residual CT).
If 87GD is enabled, 67N with IN (Residual CT) operating current will not be available.
Out of Step (mho characteristic)

Circle Diameter 0.1 to 100.0 Ω 0.1 Ω 0.1 Ω or 5%

(0.5 to 500.0 Ω) ( 0.5 Ω or 5%)
Offset –100.0 to 100.0 Ω 0.1 Ω 0.1 Ω or 5%
(–500.0 to 500.0 Ω) ( 0.5 Ω or 5%)
Impedance Angle 0° to 90° 1° 1°
78
Blinder 0.1 to 50.0 Ω 0.1 Ω 0.1 Ω or 5%
(0.5 to 250.0 Ω) ( 0.5 Ω or 5%)
Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Trip on mho Exit Enable/Disable
Pole Slip Counter 1 to 20 1
Pole Slip Reset 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
Frequency

Pickup #1,#2,#3,#4 50.00 to 67.00 Hz 0.01 Hz 0.02 Hz

40.00 to 57.00 Hz*
81
Time Delay #1–#4 3 to 65,500 Cycles 1 Cycle 2 Cycles or 1%
The pickup accuracy applies to 60 Hz models at a range of 57 to 63 Hz, and to 50 Hz models at a range of 47 to
53 Hz. Beyond these ranges, the accuracy is 0.1 Hz.
* This range applies to 50 Hz nominal frequency models.

†
Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.

–8–
 M-3425A Generator Protection Relay

PROTECTIVE FUNCTIONS (cont.)

Device Setpoint
Number Function Ranges Increment Accuracy†

Frequency Accumulation

Bands #1, #2, #3, #4, #5, #6

High Band #1 50.00 to 67.00 Hz 0.01 Hz 0.02 Hz
81A 40.00 to 57.00 Hz*
Low Band #1–#6 50.00 to 67.00 Hz 0.01 Hz 0.02 Hz
40.00 to 57.00 Hz*
Delay #1–#6 3 to 360,000 Cycles 1 Cycle 2 Cycles or 1%
When using multiple frequency bands, the lower limit of the previous band becomes the upper limit for the next band,
i.e., Low Band #2 is the upper limit for Band #3, and so forth. Frequency bands must be used in sequential order, 1 to
6. Band #1 must be enabled to use Bands #2–#6. If any band is disabled, all following bands are disabled.
When frequency is within an enabled band limit, accumulation time starts (there is an internal ten cycle delay prior to
accumulation) and allows the underfrequency blade resonance to be established to avoid unnecessary accumulation
of time. When duration is greater than set delay, the alarm asserts and a target log entry is made.
The pickup accuracy applies to 60 Hz models at a range of 57 to 63 Hz, and 50 Hz models at a range of 47 to 53 Hz.
Beyond these ranges, the accuracy is 0.1 Hz.
* This range applies to 50 Hz nominal frequency models.

Rate of Change of Frequency

Pickup #1, #2 0.10 to 20.00 Hz/Sec. 0.01 Hz/Sec. 0.05 Hz/Sec. or 5%

81R
Time Delay #1, #2 3 to 8160 Cycles 1 Cycle + 20 Cycles
Negative Sequence
Voltage Inhibit 0 to 99% 1% 0.5%
Phase Differential Current
Pickup #1, #2 0.20 A to 3.00 A 0.01 A 0.1 A or 5%
(0.04 to 0.60 A) ( 0.02 A or 5%)
87
Percent Slope #1, #2 1 to 100% 1% 2%
Time Delay* #1, #2 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%
CT Correction** 0.50 to 2.00 0.01 +1 to -2 Cycles or 1%
*When a time delay of 1 cycle is selected, the response time is less than 1–1/2 cycles.
**The CT Correction factor is multiplied by IA,IB,IC.
Ground (zero sequence) Differential Current
Pickup 0.20 to 10.00 A 0.01 A 0.1 A or 5%
87 (0.04 to 2.00 A) ( 0.02 A or 5%)
GD
Time Delay 1 to 8160 Cycles* 1 Cycle +1 to -2 Cycles or 1%
CT Ratio Correction (RC) 0.10 to 7.99 0.01
*The Time Delay Setting should not be less than 2 Cycles.
The 87GD function is provided primarily for low-impedance grounded generator applications. This function
operates as a directional differential. If 3I0 or In is extremely small (less than 0.2 secondary Amps), the element
becomes non-directional.
If 67N function with IN (Residual) operating current is enabled, 87GD will not be available. Also, if 50DT is used
for split-phase differential, 87GD function will not be available.

†
Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.

–9–
M-3425A Generator Protection Relay

PROTECTIVE FUNCTIONS (cont.)

Device Setpoint
Number Function Ranges Increment Accuracy†

IPSlogicTM

IPSlogic uses element pickups, element trip commands, control/status input state changes,
IPS output contact close signals to develop 6 programmable logic schemes.

Time Delay #1–#6 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%

Breaker Monitoring

Pickup 0 to 50,000 kA Cycles 1 kA Cycles 1 kACycles

or kA2 Cycles or kA2 Cycles or kA2 Cycles
BM
Time Delay 0.1 to 4095.9 Cycles 0.1 Cycles 1 Cycle or 1%
Timing Method IT or I2T
Preset Accumulators 0 to 50,000 kA Cycles 1 kA Cycle
Phase A, B, C
The Breaker Monitor feature calculates an estimate of the per-phase wear on the breaker contacts by measuring and
integrating the current (or current squared) through the breaker contacts as an arc.
The per-phase values are added to an accumulated total for each phase, and then compared to a user-programmed
threshhold value. When the threshhold is exceeded in any phase, the relay can set a programmable output contact.
The accumulated value for each phase can be displayed.
The Breaker Monitoring feature requires an initiating contact to begin accumulation, and the accumulation begins
after the set time delay.
Trip Circuit Monitoring

TC Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle or 1%

The AUX input is provided for monitoring the integrity of the trip circuit. This input can be used for nominal trip
coil voltages of 24 V dc, 48 V dc, 125 V dc and 250 V dc.
Nominal Settings

Nominal Voltage 50.0 to 140.0 V 0.1 V —

Nominal Current 0.50 to 6.00 A 0.01 A —
VT Configuration Line-Line/Line-Ground/
Line-Ground to Line-Line*
Delta/Wye Unit
Transformer Disable/Delta AB/Delta AC
Seal-In Delay 2 to 8160 Cycles 1 Cycle 1 Cycle or 1%
*When Line-Ground to Line-Line is selected, the relay internally calculates the line-line voltages from the line-ground
voltages for all voltage-sensitive functions. This Line-Ground to Line-Line selection should only be used for a VT
connected Line-Ground with a secondary voltage of 69 V (not 120 V).

†
Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.

–10–
 M-3425A Generator Protection Relay

OPTIONAL PROTECTIVE FUNCTIONS

Device Setpoint
Number Function Ranges Increment Accuracy†

Sync Check

25D
Dead Check
Dead Voltage Limit 0 to 60 V 1V 0.5 V or ±0.5%
Dead Time Delay 1 to 8160 Cycles 1 Cycle –1 to +3 Cycles or 1%

25S
Sync Check
Phase Angle Window 0° to 90° 1° 1°
25 Upper Voltage Limit 60 to 140 V 1V 0.5 V or ±0.5%
Lower Voltage Limit 40 to 120 V 1V 0.5 V or ±0.5%
Delta Voltage Limit 1.0 to 50.0 V 0.1 V 0.5 V or ±0.5%
Delta Frequency Limit 0.001 to 0.500 Hz 0.001 Hz 0.0007 Hz or ±5%
Sync Check Time Delay 1 to 8160 Cycles 1 Cycle –1 to +3 Cycles or ±1%
Various combinations of input supervised hot/dead closing schemes may be selected. The 25 function cannot be
enabled if the 59D function with VX or 67N function with VX is enabled.
Field Ground Protection

Pickup #1, #2 5 to 100 KΩ 1 KΩ 10% or ±1KΩ

64F Time Delay #1, #2 1 to 8160 Cycles 1 Cycle ( IF2 +1) Sec.
Injection Frequency (IF) 0.10 to 1.00 Hz 0.01 Hz
64B Brush Lift-Off Detection (measuring control circuit)
Pickup 0 to 5000 mV 1 mV
Time Delay 1 to 8160 Cycles 1 Cycle ( IF2 +1) Sec.
When 64F is purchased, an external Coupler Module (M-3921) is provided for isolation from dc field voltages.
Figure 10, Field Ground Protection Block Diagram, illustrates a typical connection utilizing the M-3921 Field
Ground Coupler. Hardware dimensional and mounting information is shown in Figure 11, M-3921 Field Ground
Coupler Mounting Dimensions.
100% Stator Ground Protection by low frequency injection

Total Current Pickup 2 to 75 mA 0.1 mA 2 mA or 10%

64S Real Component of
Total Current Pickup 2 to 75 mA 0.1 mA 2 mA or 10%
Time Delay 1 to 8160 Cycles 1 Cycle 1 Cycle* or 1%
An external Low Frequency Generator, Band Pass Filter and Current Transformer are required for this function.
Figure 12, 64S Function Component Connection Diagram, illustrates a typical 100% Stator Ground Protection by
Low Frequency Injection application. Hardware dimensional and mounting information is illustrated in Figures
13, 14 and 15.

59D and 27TN function should be disabled when the 64S function is enabled. 59N may be applied when this
function is enabled.

* Time Delay accuracy in cycles is based on 20 Hz frequency.

†
Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.

–11–
M-3425A Generator Protection Relay

Description
The M-3425A Generator Protection Relay is suitable for all generator ratings and prime movers. Typical
connection diagrams are illustrated in Figure 4, M-3425A One-Line Functional Diagram (configured for phase
differential), and Figure 5, One-Line Functional Diagram (configured for split-phase differential).

Configuration Options
The M-3425A Generator Protection Relay is available in either a Base or Comprehensive package of
protective functions. This provides the user with flexibility in selecting a protective system to best suit the
application. Additional Optional Protective Functions may be added at the time of purchase at per-function
pricing.
The Human-Machine Interface (HMI) Module, Target Module, or redundant power supply can be selected at
time of purchase.
When the Field Ground (64F) Premium Protective Function is purchased, an external coupler module
(M-3921) is provided for isolation from the dc field voltages.
When 100% Stator Ground (64S) protection using low-frequency injection is purchased, an external band
pass filter and frequency generator is provided.

Multiple Setpoint Profiles (Groups)

The relay supports four setpoint profiles. This feature allows multiple setpoint profiles to be defined for different
power system configurations or generator operating modes. Profiles can be switched either manually using
the Human-Machine Interface (HMI), by communications, programmable logic or by control/status inputs.
■ NOTE: During profile switching, relay operation is disabled for approximately 1 second.

Metering
The relay provides metering of voltages (phase, neutral and sequence quantities), currents (phase, neutral
and sequence quantities), real power, reactive power, power factor and impedance measurements.
Metering accuracies are:
Voltage: 0.5 V or 0.5%, whichever is greater
0.8 V or 0.75%, whichever is greater (when both RMS and Line-Ground to Line-Line are
selected)
Current: 5 A rating, 0.1 A or 3%, whichever is greater
1 A rating, 0.02 A or 3%, whichever is greater
Power: 0.01 PU or 2% of VA applied, whichever is greater
Frequency: 0.02 Hz (from 57 to 63 Hz for 60 Hz models; from 47 to 53 Hz for 50 Hz models)
0.1 Hz beyond 63 Hz for 60 Hz models, and beyond 53 Hz for 50 Hz models
Volts/Hz: 1%

Oscillographic Recorder
The oscillographic recorder provides comprehensive data recording of all monitored waveforms, storing up to
416 cycles of data. The total record length is user-configurable from 1 to 16 partitions. The sampling rate is 16
times the power system nominal frequency (50 or 60 Hz). The recorder may be triggered using either the
designated control/status inputs, trip outputs, or using serial communications. When untriggered, the recorder
continuously stores waveform data, thereby keeping the most recent data in memory. When triggered, the
recorder stores pre-trigger data, then continues to store data in memory for a user-defined, post-trigger delay
period. The data records can be stored in either Beckwith Electric format or COMTRADE format.

Target Storage
Information associated with the last 32 trips is stored. The information includes the function(s) operated, the
functions picked up, input/output status, time stamp, and phase and neutral currents at the time of trip.

–12–
 M-3425A Generator Protection Relay

Sequence of Events Log

The Sequence of Events Log records relay element status, I/O status, measured values and calculated values
time stamped with 1 ms resolution at user-defined events. The Sequence of Events Log includes 512 of the
most recently recorded relay events. The events and the associated data is available for viewing utilizing the
M-3820D IPScom Communications Software.

Calculations
Current and Voltage RMS Values: Uses Discrete Fourier Transform algorithm on sampled voltage and current
signals to extract fundamental frequency phasors for relay calculations. RMS calculation for the 50, 51N, 59
and 27 functions, and the 24 function are obtained using the time domain approach to obtain accuracy over a
wide frequency band. When the RMS option is selected, the magnitude calculation for 59 and 27 functions is
accurate over a wide frequency range (10 to 80 Hz). When the DFT option is selected, the magnitude
calculation is accurate near nominal frequency (50 Hz/60 Hz) but will degrade outside the nominal frequency.
For 50 and 51N functions the DFT is used when the frequency is 55 Hz to 65 Hz for 60 Hz (nominal) and 45 Hz
to 55Hz for 50 Hz (nominal), outside of this range RMS calculation is used.

Power Input Options

Nominal 110/120/230/240 V ac, 50/60 Hz, or nominal 110/125/220/250 V dc. Operates properly from 85 V ac
to 265 V ac and from 80 V dc to 312.5 V dc. Withstands 300 V ac or 315 V dc for 1 second. Nominal burden 40
VA at 120 V ac/125 V dc.
Nominal 24/48 V dc, operates properly from 18 V dc to 56 V dc, withstands 65 V dc for 1 second. Burden 25 VA
at 24 V dc and 30 VA at 48 V dc.
An optional redundant power supply is available for units that are purchased without the expanded I/O.
For those units purchased with the expanded I/O, the unit includes two power supplies which are required to
power the relay. Burden (nominal) 46 VA @120 V ac.

Sensing Inputs
Five Voltage Inputs: Rated for a nominal voltage of 50 V ac to 140 V ac at 60 Hz or 50 Hz. Will withstand 240 V
continuous voltage and 360 V for 10 seconds. Source voltages may be line-to-ground or line-to-line connected.
Phase sequence ABC or ACB is software selectable. Voltage transformer burden less than 0.2 VA at 120 V ac.
Seven Current Inputs: Rated nominal current (IR) of 5.0 A or 1.0 A at 60 Hz or 50 Hz. Will withstand 3IR
continuous current and 100IR for 1 second. Current transformer burden is less than 0.5 VA at 5 A, or 0.3 VA
at 1 A.

Control/Status Inputs
The control/status inputs, INPUT1 through INPUT6, can be programmed to block any relay protective function,
to trigger the oscillograph recorder, to operate one or more outputs or can be an input into IPSlogic. To provide
breaker status LED indication on the front panel, the INPUT1 control/status input contact must be connected to
the 52b breaker status contact.
The optional expanded I/O includes an additional 8 programmable control/status inputs (INPUT7 through
INPUT14).
▲ CAUTION: The control/status inputs should be connected to dry contacts only, and are internally connected
(wetted) with a 24 V dc power supply.

Output Contacts
Any of the functions can be individually programmed to activate any one or more of the eight programmable
output contacts OUTPUT1 through OUTPUT8. Any output contact can also be selected as pulsed or latched.
IPSlogic can also be used to activate an output contact.
The optional expanded I/O includes an additional 15 programmable output contacts (OUTPUT9 through
OUTPUT23). These contacts are configurable only using IPScom software.
The eight output contacts (six form ‘a’ and two form ‘c’), the power supply alarm output contact (form ‘b’), the self-
test alarm output contact (form ‘c’) and the optional 15 expanded I/O output contacts (form 'a') are all rated per
ANSI/IEEE C37.90-1989 for tripping. Make 30 A for 0.2 seconds, carry 8 A, break 6 A at 120 V ac, break 0.5 A at
48 V dc; 0.3 A, 125 V dc; 0.2 A, 250 V dc with L/R=40 mSec.

–13–
M-3425A Generator Protection Relay

IPSlogic
This feature can be programmed utilizing the IPScom® Communications Software. IPSlogic takes the contact
input status and function status, and by employing (OR, AND, and NOT) boolean logic and a timer, can
activate an output or change setting profiles.

Target/Status Indicators and Controls

The RELAY OK LED reveals proper cycling of the microcomputer. The BRKR CLOSED LED will illuminate
when the breaker is closed (when the 52b contact input is open). The OSC TRIG LED indicates that
oscillographic data has been recorded in the unit's memory. The TARGET LED will illuminate when any of the
relay functions operate. Pressing and releasing the TARGET RESET buttonresets the target LED if the
conditions causing the operation have been removed. Holding the TARGET RESET push button displays the
present pickup status of the relay functions. The PS1 and PS2 LEDs will remain illuminated as long as power
is applied to the unit and the power supply is operating properly. TIME SYNC LED illuminates when valid
IRIG-B signal is applied and time synchronization has been established.

Communication
Communications ports include rear panel RS-232 and RS-485 ports, a front panel RS-232 port, a rear-panel
IRIG-B port and an Ethernet port (optional). The communications protocol implements serial, byte-oriented,
asynchronous communication, providing the following functions when used with the Windows™-compatible
M-3820D IPScom® Communications Software. MODBUS and BECO 2200 protocols are supported providing:
• Interrogation and modification of setpoints
• Time-stamped information for the 32 most recent trips
• Real-time metering of all quantities measured
• Downloading of recorded oscillographic data and Sequence of Events Recorder data.

The optional Ethernet port can be purchased with MODBUS over TCP/IP and BECO2200 over TCP/IP
protocols or with the IEC 61850 protocol.

IRIG-B
The M-3425A Generator Protection Relay can accept either modulated or demodulated IRIG-B time clock
synchronization signal. The IRIG-B time synchronization information is used to correct the hour, minutes,
seconds, and milliseconds information.

HMI Module (optional)

Local access to the relay is provided through an optional M-3931 HMI (Human-Machine Interface) Module,
allowing for easy-to-use, menu-driven access to all functions utilizing six pushbuttons and a 2-line by 24
character alphanumeric vacuum florescent display. Features of the HMI Module include :
• User-definable access codes that allow three levels of security
• Interrogation and modification of setpoints
• Time-stamped information for the 32 most recent trips
• Real-time metering of all quantities measured

Target Module (optional)

An optional M-3925A Target Module provides 24 target and 8 output LEDs. Appropriate target LEDs will
illuminate when the corresponding function operates. The targets can be reset with the TARGET RESET
pushbutton. The OUTPUT LEDs indicate the status of the programmable output relays.

–14–
 M-3425A Generator Protection Relay

Temperature Controller Monitoring

Any Temperature Controller equipped with a contact output may be connected to the M-3425A and controlled
by the relay's programmable IPSlogic function. Figure 1 is an example of a typical Temperature Controller
Monitoring application. The Omron E5C2 Temperature Controller is a DIN rail mounted RTD interface to the
M-3425A Generator Protection relay. The E5C2 accepts type J or K thermocouples, platinum RTDs or
thermistors as its input. Supply voltage for the E5C2 accepts 110/120 V ac, 50/60 Hz, or 220/240 V ac 50/60
Hz or 24 V dc.

Temperature
Controller M-3425A

R1 IN X
C Alarm/Trip
IN RTN

R2

Omron E5C2 IPSlogic

P.D. 750
or equivalent

Figure 1 Typical Temperature Controller Monitoring Application

I/O Expansion (optional)

Optional I/O Expansion provides an additional 15 form 'a' output contacts and an additional 8 control/status
inputs. Output LEDs indicate the status of the output relays.

Tests and Standards

The relay complies with the following type tests and standards:
Voltage Withstand
Dielectric Withstand
IEC 60255-5 3,500 V dc for 1 minute applied to each independent circuit to earth
3,500 V dc for 1 minute applied between each independent circuit
1,500 V dc for 1 minute applied to IRIG-B circuit to earth
1,500 V dc for 1 minute applied between IRIG-B to each independent circuit
1,500 V dc for 1 minute applied between RS-485 to each independent circuit

Impulse Voltage
IEC 60255-5 5,000 V pk, +/- polarity applied to each independent circuit to earth
5,000 V pk, +/- polarity applied between each independent circuit
1.2 by 50 μs, 500 ohms impedance, three surges at 1 every 5 seconds

Insulation Resistance
IEC 60255-5 > 100 Megaohms

–15–
M-3425A Generator Protection Relay

Electrical Environment
Electrostatic Discharge Test
EN 60255-22-2 Class 4 (8 kV)—point contact discharge
EN 60255-22-2 Class 4 (15kV)–air discharge

Fast Transient Disturbance Test

EN 60255-22-4 Class A (4 kV, 2.5 kHz)

Surge Withstand Capability

ANSI/IEEE 2,500 V pk-pk oscillatory applied to each independent circuit to earth
C37.90.1- 2,500 V pk-pk oscillatory applied between each independent circuit
1989 5,000 V pk Fast Transient applied to each independent circuit to earth
5,000 V pk Fast Transient applied between each independent circuit

ANSI/IEEE 2,500 V pk-pk oscillatory applied to each independent circuit to earth

C37.90.1- 2,500 V pk-pk oscillatory applied between each independent circuit
2002 4,000 V pk Fast Transient burst applied to each independent circuit to earth
4,000 V pk Fast Transient burst applied between each independent circuit

■ NOTE: The signal is applied to the digital data circuits (RS-232, RS-485, IRIG-B, Ethernet communication
port and field ground coupling port) through capacitive coupling clamp.

Radiated Susceptibility
ANSI/IEEE 25-1000 Mhz @ 35 V/m
C37.90.2

Output Contacts
ANSI/IEEE Make 30 A for 0.2 seconds, off for 15 seconds for 2,000 operations, per Section 6.7.1,
Tripping
C37.90.0 Output Performance Requirements

Atmospheric Environment
Temperature
IEC 60068-2-1 Cold, –20° C
IEC 60068-2-2 Dry Heat, +70° C
IEC 60068-2-3 Damp Heat, +40° C @ 93% RH

Mechanical Environment
Vibration
IEC 60255-21-1 Vibration response Class 1, 0.5 g
Vibration endurance Class 1, 1.0 g

IEC 60255-21-2 Shock Response Class 1, 5.0 g

Shock Withstand Class 1, 15.0 g
Bump Endurance Class 1, 10.0 g

–16–
 M-3425A Generator Protection Relay

Compliance
UL-Listed per 508 – Industrial Control Equipment
UL-Listed Component per 508A Table SA1.1 Industrial Control Panels
CSA-Certified per C22.2 No. 14-95 – Industrial Control Equipment
CE Safety Directive – EN61010-1:2001, CAT II, Pollution Degree 2

Physical
Without Optional Expanded I/O
Size: 19.00" wide x 5.21" high x 10.20" deep (48.3 cm x 13.2 cm x 25.9 cm)
Mounting: The unit is a standard 19", semiflush, three-unit high, rack-mount panel design, conforming to
ANSI/EIA RS-310C and DIN 41494 Part 5 specifications. Vertical or horizontal panel-mount options are
available.
Approximate Weight: 17 lbs (7.7 kg)
Approximate Shipping Weight: 25 lbs (11.3 kg)

With Optional Expanded I/O

Size: 19.00" wide x 6.96" high x 10.2" deep (48.3 cm x 17.7 cm x 25.9 cm)
Mounting: The unit is a standard 19", semiflush, four-unit high, rack-mount panel design, conforming to ANSI/
EIA RS-310C and DIN 41494 Part 5 specifications. Vertical or horizontal panel-mount options are available.
Approximate Weight: 19 lbs (8.6 kg)
Approximate Shipping Weight: 26 lbs (11.8 kg)

Recommended Storage Parameters

Temperature: 5° C to 40° C
Humidity: Maximum relative humidity 80% for temperatures up to 31° C, decreasing to 31° C
linearly to 50% relative humidity at 40° C.
Environment: Storage area to be free of dust, corrosive gases, flammable materials, dew, perco-
lating water, rain and solar radiation.
See M-3425A Instruction Book, Appendix E, Layup and Storage for additional information.
Patent & Warranty
The M-3425A Generator Protection Relay is covered by U.S. Patents 5,592,393 and 5,224,011.
The M-3425A Generator Protection Relay is covered by a five year warranty from date of shipment.

Specification subject to change without notice.

External Connections
M-3425A external connection points are illustrated in Figures 2 and 3.

–17–
 3
2
BECKW IT H ELECT RIC CO . INC. W A RNING! CO NT A CT W IT H T ERMINA L S MA Y CA US E EL ECT RIC S HO CK MODEL: M-3425A FIRMWARE: D-0150
R
6 19 0 118 t h AV E NO . FO R CO NT A CT RA T INGS S EE INS T RUCT IO N MA NUA L
R
5 0 Hz 6 0 Hz S ERIA L NO .
8 3 F4
L A RGO , FL 3 3 7 7 3 727- 5 4 4 - 23 26
L IS T ED NRT L / C
IND.CO NT .EQ LR 8 9 4 6 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
IRIG- B COM 2
COM2 RS 2 3 2
ETHERNET
!
24
48 - + - + IN
6
IN
5
IN
4
IN
3
IN
2
IN
1
IN
RT N
125
! P/ S S ELF- T EST 8 7 6 5 4 3 2 1
250 RS 4 8 5 (5 2 b)
1 A UX COM 3 INPUTS A LA RMS OUT PUTS
V V V
A B C VN IA IB IC PS2 PS1

–18–
IN Ia Ib Ic PS 2 PS 1
! F IE L D G N D VA B VB C VC A
COUPLER + - + -
F1 F2
4
3 A MP,2 5 0 V ( 3 A B)
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
64 VX 65 64S 18 - 5 6 18 - 5 6
64F 0 .0 1A NO M 85 265 85 265
F3 F4
RA T ED V O L T A GE
RAT ED CURRENT
6 0 - 14 0 V A C,5 0 / 6 0 Hz 1A ,NO M 5 A ,NO M
M-3425A Generator Protection Relay

Figure 2 External Connections (Without Optional Expanded I/O)

■ NOTES:
1. See M-3425A Instruction Book Section 2.3, Setpoints and Time Settings, subsection for 64B/F Field Ground Protection.
2. Before making connections to the Trip Circuit Monitoring input, see M-3425A Instruction Book Section 5.5, Circuit Board Switches and
Jumpers, for the information regarding setting Trip Circuit Monitoring input voltage. Connecting a voltage other than the voltage that the unit is
configured to may result in mis-operation or permanent damage to the unit.
3. 8 WARNING: ONLY DRY CONTACTS must be connected to inputs (terminals 5 through 10 with 11 common) because these contact
inputs are internally wetted. Application of external voltage on these inputs may result in damage to the units.
4. 8 WARNING: The protective grounding terminal must be connected to an earthed ground any time external connections have been
made to the unit.
 BECKW IT H ELECT RIC CO . INC.
6 19 0 118 t h AV E NO . W A RNING! CO NT A CT W IT H T ERMINA L S MA Y CA US E EL ECT RIC S HO CK MODEL: M-3425A FIRMWARE: D-0150
L A RGO , FL 3 3 7 7 3 727- 5 4 4 - 23 26 FO R CO NT A CT RA T INGS S EE INS T RUCT IO N MA NUA L
5 0 Hz 6 0 Hz S ERIA L NO .

66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105

IN IN IN IN IN IN IN IN IN
RT N 14 13 12 11 10 9 8 7
C R US 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
83F4 INPUTS OUT PUTS
2 LIST ED
IND. CONT . EQ .
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

IRIG- B COM 2
RS 2 3 2
1 24 IN IN IN IN IN IN IN
48 - + - +
COM 2 ! 125
6 5 4 3 2 1 RT N
ETHERNET 250
P/ S S ELF- T EST 8 7 6 5 4 3 2 1
RS 4 8 5 (5 2 b) !
A UX COM 3 INPUTS A LA RMS OUT PUTS
V V V
A B C VN IA IB IC IN Ia Ib Ic PS 2 PS 1 PS2 PS1
! F IE L D G N D VA B VB C VC A
COUPLER + - + -
F1 F2

–19–
3 A MP,2 5 0 V ( 3 A B)
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
64 VX 65 64S 18 - 5 6 18 - 5 6
64F 0 .0 1A NO M 85 265 85 265
F3 F4
RA T ED V O L T A GE
4 3 RAT ED CURRENT
6 0 - 14 0 V A C,5 0 / 6 0 Hz 1A ,NO M 5 A ,NO M

Figure 3 External Connections (With Optional Expaned I/O)

■ NOTES:
1. See M-3425A Instruction Book Section 2.3, Setpoints and Time Settings, subsection for 64B/F Field Ground Protection.
2. Before making connections to the Trip Circuit Monitoring input, see M-3425A Instruction Book Section 5.5, Circuit Board Switches and
Jumpers, for the information regarding setting Trip Circuit Monitoring input voltage. Connecting a voltage other than the voltage that the unit is
configured to may result in mis-operation or permanent damage to the unit.
3. 8 WARNING: ONLY DRY CONTACTS must be connected to inputs (terminals 5 through 10 with 11 common and terminals 68
through 75 with 66 and 67 common) because these contact inputs are internally wetted. Application of external voltage on these
inputs may result in damage to the units.
4. 8 WARNING: The protective grounding terminal must be connected to an earthed ground any time external connections have been
made to the unit.
M-3425A Generator Protection Relay
M-3425A Generator Protection Relay

These functions are available in Utility System

the Comprehensive Package. A
M-3425A Typical subset of these functions are also
available in a Base Package.
Connection Diagram
52
This function is available as a
optional protective function. Unit

This function provides control for

the function to which it points.
M-3425A

Targets CT
50 50
(Optional) BFPh DT
Integral HMI VT (Note 1)
(Optional)
CT (Residual)
Metering (Note 4)

87
Waveform Capture
25 52
VT Gen
IRIG-B

Front RS232
Communication
81R 81A 81 27 59 24 M
Rear RS232
Communication (Metering) VT (Note 1)
Rear Ethernet
Port (Optional)
Rear RS-485 (Note 3)
Communication M-3921
59X +
Multiple Setting
Groups
-

Programmable I/O
64F 64B
27

Self Diagnostics

Dual Power Supply 60 CT

78 FL 51V 50/27 40 32 21 50 49 46 M
(Optional)
(Metering)
Breaker
Monitoring 3VO (Calculated) 67N Operating Current
VX (Software Select)
Trip Circuit IN
VN 50 50N 51N
Monitoring 67N Polarization
BFN
(Software Select) 67N
3IO
Event Log
(Note 5)
3VO (Calculated) VX

CT (Neutral)
59D Line Side 87 50 50N 51N (Notes 2 & 5)
Voltage 27
27 GD BFN
(Software Select) 59D 64S 59N R
32 TN
R

High-impedance Grounding with Third Low-impedance Grounding with Ground Differential

Harmonic 100% Ground Fault Protection and Overcurrent Stator Ground Fault Protection
■ NOTES:
1. When 25 function is enabled, 59X, 59D with VX and 67N with VX are not available, and vice versa.
2. When 67N function with IN (Residual) operating current is enabled, 87GD is not available, and vice
versa.
3. When VT source is used as a turn-to-turn fault protection device (See M-3425A Instruction Book,
Chapter 2, Application, for additional 59X applications.)
4. The current input IN can be connected either from neutral current or residual current.
5. The 50BFN, 50N, 51N, 59D, 67N (with IN or VN) and 87GD functions are unavailable when the 64S
function has been purchased. See the M-3425A Instruction Book for connection details.
Figure 4 One-Line Functional Diagram (Configured with Phase Differential)

–20–
 M-3425A Generator Protection Relay

These functions are available in

the Comprehensive Package. A Utility System
M-3425A Typical subset of these functions are also
available in a Base Package.
Connection Diagram
(Configured for Split-Phase Differential) This function is available as a 52
optional protective function. Unit

This function provides control for

the function to which it points.
M-3425A
VT (Note 1)

Targets CT (Residual)
(Optional) (Note 5)

Integral HMI
(Optional) 25 52
VT Gen
Metering

Waveform Capture

81R 81A 81 59 27 24 M
IRIG-B
(Metering)
50 CT (Note 3)
Front RS232 DT
Communication
Rear RS232
Communication VT (Note 1)

Rear Ethernet
Port (Optional)
(Note 2)
Rear RS-485 M-3921
Communication 59X +

Multiple Setting
Groups -

Programmable I/O 64F 64B

27

Self Diagnostics
CT
78 60FL 51V 50/27 40 32 21 50 49 46 M
Dual Power Supply
(Optional) (Metering)

Breaker
Monitoring
Trip Circuit
Monitoring 3V O (Calculated)
(Note 4)
VX
Event Log 67N
VN 67N Polarization
(Software Select)

VX 3V O (Calculated)

59D Line Side CT

CT (Neutral)
Voltage 27 50N 51N (Note 5)
(Software Select) 59D 27 64S 59N R
32 TN
R

High-impedance Grounding with Third Low-impedance Grounding with

Harmonic 100% Ground Fault Protection Overcurrent Stator Ground Fault Protection
■ NOTES:
1. When 25 function is enabled, 59X, 59D with VX and 67N with VX are not available, and vice versa.
2. When used as a turn-turn fault protection device.
3. CTs are connected for split-phase differential current.
4. 67N operating current can only be selected to IN (Residual) for this configuration.
5. The current input (IN) can be connected either from neutral current or residual current.
6. The 50BFN, 50N, 51N, 59D, 67N (with IN or VN) and 87GD functions are unavailable when the 64S
function has been purchased. See the M-3425A Instruction Book for connection details.
Figure 5 One-Line Functional Diagram (configured for split-phase diffential)

–21–
M-3425A Generator Protection Relay

17.48 [44.4]
ACTUAL

5.21 [13.23]
ACTUAL

Rear View

10.20 [25.91]

19.00
[48.26]

19.00 [48.26]
0.33
18.34 [46.58] [0.84]

0.40 [1.02] x 0.27 [0.68] SLOT (4x)

2.35 [5.96]

1.35 [3.42]

Standard 19" Horizontal Mount Chassis

n NOTE: Dimensions in brackets are in centimeters.

Figure 6 Horizontal Mounting Dimensions (Without Expanded I/O)

■ NOTE: Panels for vertical mounting are available (See Figure 8).

–22–
 M-3425A Generator Protection Relay

PANEL CUTOUT
.12
17.50± .00
[44.5 +.30 -.00]

9.97
[25.32]

19.00
[48.26]
.25 X .45 SLOT [.64 X 1.14]
4 PLACES

OUTPUTS
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

COM 1
RELAY BRKR
TARGET
TARGET
4.00 OK CLOSED TARGET PS 2
RESET
[10.16]
TIME OSC. DIAG PS 1
6.96 SYNC TRIG
[17.68]
M-3425A
GENERATOR PROTECTION
R

B EC KWIT H
CO . INC .
E L EC T R IC
OUTPUTS
Made in U.S.A. EXIT ENTER OUT 1 OUT 3 OUT 5 OUT 7
1.48 OUT 2 OUT 4 OUT 6 OUT 8
3.76

0.33 18.34
[0.84] [46.58]

Figure 7 Horizontal Mounting Dimensions (With Expanded I/O)

–23–
M-3425A Generator Protection Relay

5.65
[14.40]
5.59
0.40 [1.02] X 2.25 1.67 [14.20]
0.27 [0.68] [5.72] [4.24] Actual
Slot (4X)

19.00
[48.26]

18.34
[46.58] 17.5
[44.45]

17.31
[43.97]
Actual

Front View Rear View

NOTE: Dimensions in brackets RECOMMENDED CUTOUT WHEN RELAY IS
are in centimeters. NOT USED AS STANDARD RACK MOUNT
AND IS PANEL CUT OUT MOUNTED
Optional Vertical Mount Chassis

■ NOTES:
1. When mounted vertically, the target module will be located at the top and all front-panel text will be
horizontally aligned. Consult Beckwith Electric Co. for details.
2. Expanded I/O not avilable on vertical mount chassis model.
Figure 8 Vertical Mounting Dimensions (Without Expanded I/O)

–24–
 M-3425A Generator Protection Relay

18.34
.33 [46.6]
[.84] 17.68
[44.91]

1.48
[3.76]

2.25
[5.72]
5.28
[13.40]
\U+2205.28 (4X)

RECOMMENDED CUTOUT
STANDARD 3 UNIT PANEL M-3425A

18.34
.33 [46.6]
[.84] 17.68
[44.91]
1.48
[3.76]

7.03
[17.86]
4.00
[10.16]

\U+2205.28 (4X)

RECOMMENDED CUTOUT
4 UNIT PANEL M-3425A (EXTENDED I/O)
TOLERANCE: .XX±.015

Figure 9 M-3425A Panel Mount Cutout Dimensions

–25–
M-3425A Generator Protection Relay

M-3921 Field Ground Coupler

PROTECTION RELAY
M-3425A

PROCESSOR

Excitation
System

Field Ground Brushes

Detection

Squarewave
Generator Gen.
Rotor

Signal COUPLING
Measurement NETWORK
and Processing (M-3921)

Shaft
Ground
Brush

Ground/Machine Frame

Figure 10 Field Ground Protection Block Diagram

„ NOTES:
1. The above circuit measures insulation resistance (Rf) between rotor field winding and ground (64F).
2. Relay injects 15 V squarewave (Vout) and measures return signal (Vf) to calculate Rf.
3. The injection frequency can be set (0.1 to 1.0 Hz) based on the rotor capacitance, in order to
improve accuracy.
4. The signal rise time is analyzed to determine if shaft brushes are lifting or open (64B).
5. May also be applied on generators with brushless excitation with a grounding brush and pilot
ground fault detection brush.

Function Specification
Field/Exciter Supply Voltage Rating (Terminal (3) to (2)):
• 60 to 1200 V dc, continuous
• 1500 V dc, 1 minute
Operating Temperature: –20° to +70°, Centigrade

Patent & Warranty

The M-3921 Field Ground Coupler is covered by a five-year warranty from date of shipment.

Tests and Standards

M-3921 Field Ground Coupler complies with the following tests and standards:

–26–
 M-3425A Generator Protection Relay

Voltage Withstand
Isolation
4 kV ac for 1 minute, all terminals to case

Impulse Voltage
IEC 60255–5, 5,000 V pk, 1.2 by 50 μs, 0.5 J, 3 positive and 3 negative impulses at 5 second
intervals per minute

Electrical Interference
Electrostatic Discharge Test
IEC 61000-4-2 Class 4 (8 kV)—point contact discharge

Fast Transient Disturbance Tests

IEC 61000-4-4 Class 4 (4 kV, 2.5 kHz)

Surge Withstand Capability

ANSI/IEEE 2,500 V pk-pk oscillatory applied to each independent circuit to earth
C37.90.1- 2,500 V pk-pk applied between each independent circuit
1989 5,000 V pk Fast Transient applied to each independent circuit to earth
5,000 V pk Fast Transient applied between each independent circuit
■ NOTE: See also M-3425A Surge Withstand Capability test standards, ANSI/IEEE C37.90.2-2002.

Radiated Susceptibility
ANSI/IEEE 25-1000 Mhz @ 20 V/m
C37.90.2

Atmospheric Environment
IEC 60068–2–1 Cold, –20° C
IEC 60068–2–2 Dry Heat, +70° C
IEC 60068–2–3 Damp Heat, +40° C @ 93% RH

Enclosure Protection
NEMA 1, IEC IPC-65

–27–
M-3425A Generator Protection Relay

7.87 [19.99] 2.96 REF [7.52]

3.54 [9.0] M-3921

Field Ground
4.72 [11.99] Coupler

BECKWIT H
CO. INC.
EL ECT RIC

Made in U.S.A.

9.06 [23.01]

.18 DIA [0.46] 4 X 7.40

[18.79]

.18 DIA [0.46] 4 HOLES

3.54 [9.0]

MOUNTING PATTERN
WITHOUT TABS

nNOTE: Dimensions in brackets are in centimeters.

Figure 11 M-3921 Field Ground Coupler Mounting Dimensions

–28–
 M-3425A Generator Protection Relay

64S 100% Stator Ground Protection by Low Frequency Signal Injection

■ NOTE: The Stator Ground Protection function (64S) must be selected when the M-3425A is initially
ordered.

The 100% stator ground fault protection is provided by injecting an external 20 Hz signal into the neutral of the
generator. The protection is provided when the machine is on-line as well as off-line (provided that the 20 Hz
generator and relay are powered on.) This scheme requires the following external components in addition to
M-3425A protection system:
• 20 Hz Signal-generator (BECO Part No. 430-00426) (Siemens 7XT33)
• Band-pass filter. (BECO Part No. 430-00427) (Siemens 7XT34)
• 20 Hz Measuring Current Transformer, 400/5 A CT (BECO Part No. 430-00428)
(ITI-CTW3-60-T50-401)
The voltage signal generated by the 20 Hz signal-generator is injected into the secondary of the generator
neutral grounding transformer through a band-pass filter. The band-pass filter passes the 20 Hz signal and
rejects out-of-band signals. The output of the 20 Hz band-pass filter is connected to the VN input of the
M-3425A relay through a suitable voltage divider, that limits the M-3425A to O 200 V ac (the voltage generator
may be bypassed if the expected 50/60 Hz voltage during a phase-to-ground fault of the generator is O 200 V.)
The 20Hz current is also connected to the IN input of the M-3425A, through the 20Hz current transformer.
When the generator is operating normally (no ground fault) only a small amount of 20 Hz current will flow as a
result of the stator capacitance to ground. When a ground fault occurs anywhere on the generator stator
windings the 20 Hz current will increase. The 64S function will issue a trip signal after a set time delay when the
measured 20 Hz current exceeds the pickup current.
For cases where the Load Resistor (RN) is small, the Undervoltage Inhibit should not be enabled, as the
voltage will be small.
The 59N function (90 to 95%) should also be used in conjunction with 64S protection to provide backup.

20 Hz
Supply
Generator Voltage
20 Hz DC AC
1A1 +VAux VA(L1)
Band Pass
1A2 -VAux VB(L2)
Filter
1A3 VC(L3)
1B1 1B4 4A1
2A1 External
Bl
2A3 Block
1A1
3A2 Device
Neutral 400A
RN 1A3 1A4 Wiring Operative
Grounding 5A 3A3
L K Shielded
Transformer 4A3 3A1
l k
400/5 A
High *
20 Hz CT Voltage

M-3425A
Low Max. 200 V
Voltage 44 45
59N
VN

52 53
IN

* For applications with a transformer secondary rating that will result in 50/60 Hz phase
ground fault voltages >200 V ac, use the "High Voltage" connection for the 59N Function.

Figure 12 64S Function Component Connection Diagram

–29–
M-3425A Generator Protection Relay

20 Hz Signal Generator Function Specifications

Auxillary Voltage
Rated auxiliary voltage UH ac 3x (100/110 V ac), 50/60 Hz 1x (110 to 230 V ac), 50/60 Hz
Permissible variations ac 80 to 130 V ac 80 to 265 V ac
OR
Rated auxiliary voltage UH dc 110 to 220 V dc
Permissible Variations dc 88 to 253 V dc

Permissible comsumption at 8 W impendance O110 VA

20 Hz Output Voltage
Connections (4A1-4A3)
Output Voltage approx. 25 V rectangular; 20 Hz 0.2 Hz
Load Capability, continuous 75 VA
■ NOTE: If the input voltage is slowly increased, appearance of the output voltage may last up to 1 minute.

Binary Input for Blocking

Connections (2A1-2A3)
Permissible voltage, continuous 300 V dc

Alarm Relay
Connections (3A1-3A3)
Switching capacity MAKE/BREAK 20W/VA
Switching voltage for O30 s 250 V dc
Permissible current MAKE 5A
Permissible current BREAK 1A

Test Voltage
2.8 kV dc

Permissible Ambient Temperatures

with RL <5 W burden O400 C or O1040 F
with RL >5 W burden O550 C or O1310 F

■ NOTE: The device may produce up to 20 W power losses during service. In order to prevent heat pockets,
the dissipation of the losses must not be restricted. The minimum clearance above and below the
device to other units or walls is 100 mm or 4 inches. In cubicles, the device shall be installed in the
bottom area.

–30–
 M-3425A Generator Protection Relay

Dimensions in mm
■ NOTE: Detailed Mounting information is contained in the M-3425A Instruction Book Chapter 5, Installation
Section 5.6.

Figure 13 20Hz Signal Generator Dimensions

–31–
M-3425A Generator Protection Relay

Band-pass Filter Specifications

Load Capacity of the 20 Hz Band-pass Filter
Connections (1B1-1B4)
Permissible voltage, continuous 55 V ac
Permissible voltage for O30 s 550 V ac
Frequency of superimposed ac voltage P 45 Hz

Overload capability, continuous 3.25 A ac

Test Voltage 2.8 kV dc

Load Capability of the Voltage Divider Circuit

Connections (1A1-1A4):
Permissible voltage, continuous 55 V ac
Permissible voltage for O30 s 50 V ac

Test Voltage 2.8 kV dc

Permissible Ambient Temperatures

with RL <5 Ω burden O400 C or O 1040 F
with RL >5 Ω burden O550 C or O 1310 F

■ NOTE: The device may produce up to 75 W power losses during service. In order to prevent heat pockets,
the dissipation of the losses must not be restricted. The minimum clearance above and below the
device to other units or walls is 100 mm or 4 inches. In cubicles, the device shall be installed in the
bottom area.

–32–
 M-3425A Generator Protection Relay

■ NOTE: Detailed Mounting information is contained in the M-3425A Instruction Book Chapter 5, Installation
Section 5.

Figure 14 Band-pass Filter Dimensions

–33–
M-3425A Generator Protection Relay

(4) SLOTS
0.40 X 0.66

© @
H1 H2

0.62-- I. 5.75 .1 6
---.1
n 5.50

j
1.12--1 I. 7.00 ..I

Figure 15 20 Hz Measuring Current Transformer 400-5 A CT

–34–
 M-3425A Generator Protection Relay

–35–
© 2001 Beckwith Electric Co.
Printed in U.S.A. (#01-67) (04.25.03) 800-3425A-SP-06 07/08
 WARNING
DANGEROUS VOLTAGES, capable of causing death or serious
injury, are present on the external terminals and inside the equip-
ment. Use extreme caution and follow all safety rules when han-
dling, testing or adjusting the equipment. However, these internal
voltage levels are no greater than the voltages applied to the exter-
nal terminals.

DANGER! HIGH VOLTAGE

– This sign warns that the area is connected to a dangerous high voltage, and you
must never touch it.

PERSONNEL SAFETY PRECAUTIONS

The following general rules and other specific warnings throughout the manual must be followed during application,
test or repair of this equipment. Failure to do so will violate standards for safety in the design, manufacture, and intended
use of the product. Qualified personnel should be the only ones who operate and maintain this equipment. Beckwith
Electric Co., Inc. assumes no liability for the customer’s failure to comply with these requirements.

– This sign means that you should refer to the corresponding section of the operation
manual for important information before proceeding.

Always Ground the Equipment

To avoid possible shock hazard, the chassis must be connected to an electrical ground. When servicing
equipment in a test area, the Protective Earth Terminal must be attached to a separate ground securely
by use of a tool, since it is not grounded by external connectors.

Do NOT operate in an explosive environment

Do not operate this equipment in the presence of flammable or explosive gases or fumes. To do so would
risk a possible fire or explosion.

Keep away from live circuits

Operating personnel must not remove the cover or expose the printed circuit board while power is ap-
plied. In no case may components be replaced with power applied. In some instances, dangerous volt-
ages may exist even when power is disconnected. To avoid electrical shock, always disconnect power and
discharge circuits before working on the unit.

Exercise care during installation, operation, & maintenance procedures

The equipment described in this manual contains voltages high enough to cause serious injury or death.
Only qualified personnel should install, operate, test, and maintain this equipment. Be sure that all per-
sonnel safety procedures are carefully followed. Exercise due care when operating or servicing alone.

Do not modify equipment

Do not perform any unauthorized modifications on this instrument. Return of the unit to a Beckwith
Electric repair facility is preferred. If authorized modifications are to be attempted, be sure to follow
replacement procedures carefully to assure that safety features are maintained.
PRODUCT CAUTIONS
Before attempting any test, calibration, or maintenance procedure, personnel must be completely familiar
with the particular circuitry of this unit, and have an adequate understanding of field effect devices. If a
component is found to be defective, always follow replacement procedures carefully to that assure safety
features are maintained. Always replace components with those of equal or better quality as shown in the
Parts List of the Instruction Book.

Avoid static charge

This unit contains MOS circuitry, which can be damaged by improper test or rework procedures. Care
should be taken to avoid static charge on work surfaces and service personnel.

Use caution when measuring resistances

Any attempt to measure resistances between points on the printed circuit board, unless otherwise noted
in the Instruction Book, is likely to cause damage to the unit.
 NOTE

The following features, described in this Instruction Book, are only available for firmware version
D-0150-V01.00.34 and later:

59N 20 Hz Injection Mode (Page 2-58)

IEEE curves for 51N, 51V, and 67N functions (Appendix D)
Sequence of Events Recorder (Page 4-18)
Dropout/Reset Time Delay added to IPSlogic (Page 2-91)
Response Time Delay for Communications (Page 4-3)
25 Function (does not produce a target) (Page 2-21)
This Page Left Intentionally Blank
 Table of Contents

TABLE OF CONTENTS
M-3425A Generator Protection
Instruction Book

Chapters - Part 1 of 2 Page

Chapter 1 Introduction
1.1 Instruction Book Contents ................................................................. 1–1
1.2 M-3425A Generator Protection Relay ................................................ 1–2
1.3 Accessories ........................................................................................ 1–4

Chapter 2 Application
2.1 Configuration ....................................................................................... 2–2
Profiles ................................................................................................ 2–3
Functions ............................................................................................ 2–3
Special Considerations ........................................................................ 2–3
Relay System Setup .......................................................................... 2–3
2.2 System Diagrams ............................................................................... 2–8
2.3 Setpoints and Time Settings ........................................................... 2–14
21 Phase Distance ........................................................................... 2–14
24 Overexcitation Volts/Hz .............................................................. 2–18
25 Sync Check ................................................................................. 2–21
27 Phase Undervoltage .................................................................... 2–25
27TN Third Harmonic Undervoltage, Neutral .................................. 2–26
32 Directional Power ........................................................................ 2–29
40 Loss of Field ............................................................................... 2–33
46 Negative Sequence Overcurrent ................................................. 2–37
49 Stator Overload Protection ......................................................... 2–39
50/50N Instantaneous Overcurrent,Phase & Neutral Circuits ........ 2–42
50BF Generator Breaker Failure/HV Breaker Flashover ................. 2–44
50DT Definite Time Overcurrent (for split-phase differential) ........ 2–46
50/27 Inadvertant Energizing ........................................................... 2–47
51N Inverse Time Neutral Overcurrent ............................................ 2–49
51V Inverse Time Phase Overcurrent with
Voltage Control/Restraint ................................................................. 2–50
59 Phase Overvoltage ...................................................................... 2–52
59D Third Harmonic Voltage Differential ......................................... 2–53
59N Overvoltage, Neutral Circuit or Zero Sequence ...................... 2–55
59X Multipurpose Overvoltage (Turn-to-Turn Stator Fault
or Bus Ground Protection) ............................................................... 2–56
60FL VT Fuse Loss ......................................................................... 2–58
64B/F Field Ground Protection ........................................................ 2–61
64F Field Ground Protection ............................................................ 2–61
64B Brush Lift-Off Detection ........................................................... 2–63
64S 100% Stator Ground Protection by Low Frequency
Signal Injection ................................................................................. 2–64

i
M-3425A Instruction Book

Chapters - Part 1 of 2 (cont'd) Page

Chapter 2 Application (cont'd)

67N Residual Directional Overcurrent ............................................. 2–67
78 Out of Step .................................................................................. 2–70
81 Frequency .................................................................................... 2–73
81A Frequency Accumulators ............................................................2–75
81R Rate of Change of Frequency ......................................................2–77
87 Phase Differential ..........................................................................2–78
87GD Ground (Zero Sequence) Differential .........................................2–80
Breaker Monitoring ..............................................................................2–81
Trip Circuit Monitoring ......................................................................... 2–82
IPSlogic .............................................................................................. 2–83
Settings and Logic ..............................................................................2–85
DO/RST (Droput/Reset) Timer Feature ...............................................2–87
Dropout Delay Timer ...........................................................................2–87
Reset Delay Timer ..............................................................................2–87

Chapter 3 Operation
3.1 Front Panel Controls ............................................................................ 3–1
Alphanumeric Display .......................................................................... 3–1
Screen Blanking .................................................................................. 3–1
Arrow Pushbuttons .............................................................................. 3–1
Exit Pushbutton ................................................................................... 3–1
Enter Pushbutton ................................................................................. 3–1
Target & Status Indicators and Controls .............................................. 3–1
Power Supply #1 (#2) LED ................................................................... 3–2
Relay OK LED ..................................................................................... 3–2
Oscillograph Recorded LED ................................................................. 3–2
Breaker Closed LED ............................................................................ 3–2
Target Indicators and Target Reset ..................................................... 3–2
Time Sync LED ................................................................................... 3–2
Diagnostic LED .................................................................................... 3–2
Accessing Screens ............................................................................. 3–2
Default Message Screens .................................................................. 3–2
3.2 Initial Setup Procedure/Settings ........................................................ 3–5
3.3 Setup Unit Data ................................................................................... 3–5
Setup Unit Data Entry .......................................................................... 3–5
Setup Unit Features That Do Not Require Data Entry .......................... 3–6
3.4 Setup System Data ............................................................................. 3–6
Configure Relay Data ........................................................................... 3–7
Setpoints and Time Settings ............................................................... 3–7
Oscillograph Recorder Data ................................................................. 3–8
Communications Settings .................................................................... 3–8
3.5 Status/Metering ................................................................................... 3–9
3.6 Target History ..................................................................................... 3–10

ii
 Table of Contents

Chapters - Part 1 of 2 (cont'd) Page

Chapter 4 Remote Operation

4.1 Remote Operation ............................................................................... 4–1
Serial Ports (RS-232) ......................................................................... 4–1
Serial Port (RS-485) ............................................................................. 4–1
Optional Ethernet Port ......................................................................... 4–1
Direct Connection ................................................................................ 4–2
Setting up the M-3425A Generator Protection
Relay for Communication ..................................................................... 4–3
Serial Communication Settings ............................................................ 4–3
Ethernet Communication Settings ....................................................... 4–3
DHCP Protocol .................................................................................... 4–3
Ethernet Protocols ............................................................................... 4–3
Ethernet Port Setup ............................................................................. 4–4
HMI Ethernet Port Setup ..................................................................... 4–4
Manual Configuration of Ethernet Board .............................................. 4–5
IPSutil™ Ethernet Port Setup with DHCP ............................................ 4–5
IPSutil Ethernet Port Setup without DHCP .......................................... 4–5
Installing the Modems ........................................................................ 4–7
4.2 Installation and Setup (IPScom®) ........................................................ 4–8
4.3 Operation ............................................................................................ 4–8
Activating Communications ................................................................ 4–8
Overview ............................................................................................. 4–9
File Menu ............................................................................................ 4–9
Comm Menu ....................................................................................... 4–9
Relay Menu ....................................................................................... 4–10
Window Menu/Help Menu ................................................................. 4–21
4.4 Checkout Status/Metering ................................................................ 4–22
4.5 Cautions ............................................................................................ 4–27
4.6 Keyboard Shortcuts .......................................................................... 4–28
4.7 IPSutil Communications Software ......................................................4–29
M-3890 IPSutil ...................................................................................4–29
Installation and Setup ......................................................................... 4–29
Installation ..........................................................................................4–30
System Setup ....................................................................................4–30
Overview .............................................................................................4–30
Comm Menu .......................................................................................4–30
Relay Comm Command ...................................................................... 4–30
Ethernet Command .............................................................................4–30
Clock Command .................................................................................4–30
Security Menu ....................................................................................4–31
Miscellaneous Menu ...........................................................................4–31
Help Menu ..........................................................................................4–32

iii
M-3425A Instruction Book

Figures - Part 1 of 2 Page

Chapter 1
1-1 M-3925A Target Module ..................................................................... 1–4
1-2 M-3931 Human-Machine Interface (HMI) Module ............................. 1–4

Chapter 2
2-1 Setup System Dialog Box ................................................................. 2–6
2-2 Selection Screen for Expanded Input ............................................... 2–7
2-3 Pulse Relay Expanded Output Screen .............................................. 2–7
2-4 Latch Relay Expanded Output Screen .............................................. 2–7
2-5 One-Line Functional Diagram ............................................................. 2–8
2-6 Alternative One-Line Functional Diagram
(configured for split-phase differential) .............................................. 2–9
2-7 Three-Line Connection Diagram ....................................................... 2–10
2-8 Function 25 Sync Check Three-Line Connection Diagram ............. 2–11
2-9 Function 59X Turn-to-Turn Fault Protection Three-Line
Connection Diagram ......................................................................... 2–12
2-10 Function 67N, 59D, 59X (Bus Ground) Three-Line
Connection Diagram ......................................................................... 2–13
2-11 Selection Screen for Expanded I/O Initiate .................................... 2–14
2-12 Phase Distance (21) Coverage ........................................................ 2–16
2-13 Phase Distance (21) Function Applied for System Backup ........... 2–16
2-14 Phase Distance (21) Setpoint Ranges ............................................ 2–17
2-15 Example of Capability and Protection Curves (24) ......................... 2–19
2-16 Volts-per-Hertz (24) Setpoint Ranges .............................................. 2–20
2-17 Sync Check Logic Diagrams ........................................................... 2–23
2-18 Sync Check (25) Setpoint Ranges .................................................. 2–24
2-19 Phase Undervoltage (27) Setpoint Ranges ..................................... 2–25
2-20 Third-Harmonic Undervoltage (27TN) Protection Characteristics ... 2–26
2-21 27TN Blocking Regions .................................................................... 2–27
2-22 Third Harmonic Undervoltage, Neutral Circuit (27TN)
Setpoint Ranges ............................................................................... 2–27
2-23 Tripping on Reverse Power Flow
(Over Power with Negative Pickup) ................................................. 2–29
2-24 Tripping on Low Foward Power
(Under Power with Positive Pickup) ................................................ 2–31
2-25 Tripping on Overpower (Over Power with Positive Pickup) ........... 2–31

iv
 Table of Contents

Figures - Part 1 of 2 Page

Chapter 2 (cont'd)
2-26 Tripping on Over Reactive Power with Element #3
(Over Power, Positive Pickup and Directional Power Sensing
Set to Reactive) ............................................................................... 2–32
2-27 Directional Power, 3-Phase (32) Setpoint Ranges .......................... 2–32
2-28 Loss of Field (40) Protective Approach 1 ....................................... 2–35
2-29 Loss of Field (40) Protective Approach 2 ....................................... 2–35
2-30 Loss of Field (40) Setpoint Ranges ................................................ 2–36
2-31 Negative Sequence Overcurrent Inverse Time Curves .................. 2–38
2-32 Negative Sequence Overcurrent (46) Setpoint Ranges .................. 2–38
2-33 Time Constant, Function 49 ............................................................ 2–39
2-34 49 Function Overload Curves .......................................................... 2–40
2-35 Stator Thermal Protection (49) Setpoint Ranges ............................ 2–41
2-36 Instantaneous Overcurrent (50) Setpoint Ranges ........................... 2–43
2-37 Instantaneous Neutral Overcurrent (50N) Setpoint Ranges ........... 2–43
2-38 Breaker Failure Logic Diagram ........................................................ 2–44
2-39 Breaker Failure (50BF) Setpoint Ranges ........................................ 2–45
2-40 Definite Time Overcurrent (50DT) Setpoint Ranges ....................... 2–46
2-41 Inadvertent Energizing Function Logic Diagram ............................. 2–48
2-42 Inadvertent Energizing (50/27) Setpoint Ranges ............................ 2–48
2-43 Inverse Time Neutral Overcurrent (51N) Setpoint Ranges ............. 2–49
2-44 Voltage Restraint (51VR) Characteristic ......................................... 2–51
2-45 Inverse Time Overcurrent with Voltage Control/Voltage
Restraint (51VC/VR) Setpoint Ranges ............................................ 2–51
2-46 Phase Overvoltage (59) Setpoint Ranges ....................................... 2–52
2-47 Third Harmonic Overvoltage Scheme for Generator
Ground-Fault Protection ................................................................... 2–54
2-48 Third Harmonic Voltage Differential (59D) Setpoint Ranges .......... 2–54
2-49 Overvoltage, Neutral Circuit or Zero Sequence (59N)
Setpoint Ranges ............................................................................... 2–55
2-50 Turn-to-Turn Stator Winding Fault Protection ................................. 2–57
2-51 Multipurpose Overvoltage (59X) Setpoint Ranges .......................... 2–57
2-52 Fuse Loss (60FL) Function Logic .................................................... 2–59
2-53 Fuse Loss (60FL) Setpoint Ranges ................................................. 2–60
2-54 M-3921 Field Ground Coupler .......................................................... 2–62
2-55 Field Ground Protection (64B/F) Setpoint Ranges ......................... 2–63

v
M-3425A Instruction Book

Figures - Part 1 of 2 (cont'd) Page

Chapter 2 (cont'd)
2-56 64S Function Component Connection Diagram .............................. 2–66
2-57 64S Function Time Delay Pickup Current Correlation .................... 2–67
2-58 100% Stator Ground Protection (64S) Setpoint Ranges ................ 2–67
2-59 Residual Directional Overcurrent (67N) Trip Characteristics .......... 2–68
2-60 Residual Directional Overcurrent (67N) Setpoint Ranges ............... 2–70
2-61 Out-of-Step Relay Characteristics ................................................... 2–72
2-62 Out-of-Step Protection Settings ....................................................... 2–72
2-63 Out-of-Step (78) Setpoint Ranges ................................................... 2–73
2-64 Example of Frequency (81) Trip Characteristics ............................ 2–75
2-65 Frequency (81) Setpoint Ranges ..................................................... 2–75
2-66 Frequency Accumulator (81A) Example Bands .............................. 2–77
2-67 Frequency Accumulator (81A) Setpoint Ranges ............................. 2–77
2-68 Rate of Change of Frequency (81R) Setpoint Ranges ................... 2–78
2-69 Differential Relay (87) Operating Characteristics ............................ 2–80
2-70 Phase Differential (87) Setpoint Ranges ......................................... 2–80
2-71 Ground Differential (87GD) Setpoint Ranges .................................. 2–81

2-72 Breaker Monitor (BM) Setpoint Ranges ........................................... 2–82

2-73 Trip Circuit Monitoring Input ............................................................ 2–83

2-74 Trip Circuit Monitor (TC) Setpoint Ranges ...................................... 2–83

2-75 IPSlogic™ Function Setup ............................................................... 2–85

2-76 IPSlogic Function Programming ......................................................... 2–86

2-77 Selection Screen for Initiating Function Timeout ................................2–87
2-78 Selection Screen for Initiating Function Pickup .................................. 2–87
2-79 Dropout Delay Timer Logic Diagram ...................................................2–88
2-80 Reset Delay Timer Logic Diagram ......................................................2–88

Chapter 3
3-1 M-3425A Front Panel ......................................................................... 3–3
3-2 Screen Message Menu Flow ............................................................. 3–3
3-3 Main Menu Flow ................................................................................. 3–4

vi
 Table of Contents

Figures - Part 1 of 2 (cont'd) Page

Chapter 4
4-1 Multiple System Addressing Using
Communications Line Splitter ............................................................ 4–2
®
4-2 IPScom Menu Selections ................................................................ 4–6
4-3 IPScom Program Icon ........................................................................ 4–8
4-4 New Device Profile Dialog Box .......................................................... 4–9
4-5 Communication Dialog Box .............................................................. 4–10
4-6 Setup System Dialog Box ............................................................... 4–11
4-7 Expanded Input Active State ........................................................... 4–12
4-8 Pulse Relay Expanded Output Screen ............................................ 4–12
4-9 Latch Relay Expanded Output Screen ............................................ 4–12
4-10 Relay Setpoints Dialog Box ............................................................. 4–13
4-11 Typical Setpoint Dialog Box ............................................................ 4–13
4-12 Expanded I/O Initiate ....................................................................... 4–13
4-13 All Setpoints Table Dialog Box (Partial) ......................................... 4–14
4-14 Configure Dialog Box (Partial) ......................................................... 4–15
4-15 Configure Dialog Box Partial
(shown with Expanded Input/Outputs) ............................................. 4–16
4-16 Unit Date/Time Dialog Box .............................................................. 4–17
4-17 Target Dialog Box ............................................................................. 4–18
4-18 Trigger Events Screen with Expanded I/O ..................................... 4–19
4-19 Event Log Viewer ............................................................................. 4–19
4-20 Event Download Screen ................................................................... 4–20
4-21 Setup Oscillograph Recorder ........................................................... 4–20
4-22 Retrieve Oscillograph Record Dialog ............................................... 4–20
4-23 Profile Switching Method Dialog ...................................................... 4–20
4-24 Select Active Profile ........................................................................ 4–21
4-25 Copy Active Profile .......................................................................... 4–21
®
4-26 About IPScom Dialog Box ............................................................. 4–21
4-27 Primary Status Dialog Box .............................................................. 4–22
4-28 Secondary Status Dialog Box .......................................................... 4–22
4-29 Accumulator Status Screen ............................................................. 4–23
4–30 Phase Distance Dialog Box ............................................................. 4–23
4-31 Loss of Field Dialog Box ................................................................. 4–24
4-32 Out of Step Dialog Box ................................................................... 4–24

vii
M-3425A Instruction Book

Figures - Part 1 of 2 (cont'd) Page

Chapter 4 (cont.)
4-33 Phasor Dialog Box ........................................................................... 4–25
4-34 Sync Scope Screen ......................................................................... 4–25
4-35 Function Status Screen ................................................................... 4–26
4-36 IPSutil™ Main Menu Flow ............................................................... 4–29
4-37 Warning Message ............................................................................. 4–30
4-38 IPSutility Reset Relay Message ..................................................... 4–30
4-39 Monitor Status Screen ..................................................................... 4–31
4-40 Calibration Dialog Box ...................................................................... 4–31
4-41 Communication Dialog Box .............................................................. 4–32
4-42 Relay Comm Port Settings .............................................................. 4–32
4-43 Ethernet Settings .............................................................................. 4–32
4-44 Unit Date/Time Dialog Box .............................................................. 4–32
4-45 Change Communication Access Code Dialog Box ......................... 4–33
4-46 Change User Access Code Dialog Box .......................................... 4–33
4-47 Setup Dialog Box ................................................................................4–33

Tables - Part 1 of 2 Page

Chapter 1
1-1 M-3425A Device Functions .................................................................. 1–3
Chapter 2
2-1 Input Activated Profile ....................................................................... 2–3
2-2 Impedance Calculation ..................................................................... 2–17
2-3 Voltage Control Time Settings ......................................................... 2–34
2-4 Delta/Wye Transformer Voltage-Current Pairs ................................ 2–51
2-5 Typical Frequency Settings ............................................................. 2–63
2-6 Typical Brush Lift-Off Settings ........................................................ 2–64
2-7 Low Frequency Signal Injection Equipment Part Number
Cross Reference .................................................................................2–66
Chapter 3
3-1 Recorder Partitions .............................................................................. 3–8
Chapter 4
4-1 Dead-Sync Time .................................................................................. 4–3
4-2 Protective System Firmware Association ............................................ 4–9
4-3 Microsoft Windows Keyboard Shortcuts .............................................4–28

viii
 Table of Contents

Chapters - Part 2 of 2 Page

Chapter 5 Installation
5.1 General Information ............................................................................ 5–1
5.2 Mechanical/Physical Dimensions ...................................................... 5–2
5.3 External Connections ....................................................................... 5–10
5.4 Commissioning Checkout ................................................................ 5–16
5.5 Circuit Board Switches and Jumpers .............................................. 5–21

5.6 Low Frequency Signal Injection Equipment .................................... 5–25

Chapter 6 Testing
6.1 Equipment/Test Setup ........................................................................ 6–2
6.2 Functional Test Procedures ............................................................... 6–6
Power On Self Tests ......................................................................... 6–7
21 Phase Distance .............................................................................. 6–8
24 Volts per Hertz, Definite Time ......................................................... 6–9
24 Volts per Hertz, Inverse Time ........................................................6–10
25D Dead Check ................................................................................6–12
25S Sync Check ................................................................................6–14
27 Phase Undervoltage .......................................................................6–16
27TN Third-Harmonic Undervoltage, Neutral .......................................6–17
32 Directional Power, 3-Phase ............................................................ 6–21
40 Loss of Field .................................................................................. 6–24
46 Negative Sequence Overcurrent Definite Time ..............................6–26
46 Negative Sequence Overcurrent Inverse Time ..............................6–27
49 Stator Overload Protection ......................................................... 6–28
50 Instantaneous Phase Overcurrent .............................................. 6–30
50BF/50BF-N Breaker Failure .......................................................... 6–31
50/27 Inadvertant Energizing ........................................................... 6–33
50DT Definite Time Overcurrent for Split-Phase Differential ......... 6–34
50N Instantaneous Neutral Overcurrent ......................................... 6–35
51N Inverse Time Neutral Overcurrent .......................................... 6–36
51V Inverse Time Phase Overcurrent with
Voltage Control/Restraint ................................................................. 6–37
59 RMS Overvoltage, 3-Phase ........................................................ 6–39
59D Third-Harmonic Voltage Differential ......................................... 6–40
59N Overvoltage, Neutral Circuit or Zero Sequence ...................... 6–41
59X Multipurpose Overvoltage ............................................................6–42
60FL VT Fuse Loss Detection ............................................................6–43
64F Field Ground Protection ............................................................... 6–44
64B Brush Lift Off Detection ...............................................................6–46
64S 100% Stator Ground Protection by Injection ............................... 6–47
67N Residual Directional Overcurrent, Definite Time ..........................6–49
67N Residual Directional Overcurrent, Inverse Time .......................... 6–51
78 Out of Step ....................................................................................6–53
81 Frequency ......................................................................................6–55
81A Frequency Accumulator ..............................................................6–56
81R Rate of Change of Frequency .................................................. 6–57

ix
M-3425A Instruction Book

Chapters - Part 2 of 2 (cont'd) Page

Chapter 6 Testing (cont'd)

87 Phase Differential ..........................................................................6–59
87GD Ground Differential ................................................................... 6–61
BM Breaker Monitoring .......................................................................6–63
Trip Circuit Monitoring ......................................................................... 6–65
IPSlogic™ ..........................................................................................6–66
6.3 Diagnostic Test Procedures ...............................................................6–67
Overview .............................................................................................6–67
Entering Relay Diagnostic Mode ......................................................... 6–67
Output Relay Test (Output Relays 1–23 and 25) ................................6–68
Output Relay Test (Power Supply Relay 24) ......................................6–69
Input Test (Control/Status) .................................................................6–69
Status LED Test .................................................................................6–70
Target LED Test .................................................................................6–71
Expanded Input/Output Test ...............................................................6–71
Button Test .........................................................................................6–71
Display Test .......................................................................................6–72
COM1/COM2 Loopback Test ..............................................................6–72
COM3 Test (2-wire) ............................................................................ 6–73
Clock ON/OFF ....................................................................................6–74
Relay OK LED Flash/Illuminated ........................................................6–75
Auto Calibration .................................................................................. 6–75
Factory Use Only ...............................................................................6–75
6.4 Auto Calibration .................................................................................. 6–76
Phase and Neutral Fundamental Calibration .......................................6–76
Third Harmonic Calibration .................................................................6–77
64S 100% Stator Ground by Low Frequency Injection Calibration ......6–77
Field Ground Calibration .....................................................................6–78

Appendices
Appendix A: Configuration Record Forms ......................................... A–1
Appendix B: Communications ............................................................ B–1
Appendix C: Self-Test Error Codes ................................................... C–1
Appendix D: Inverse Time Curves .................................................... D–1
Appendix E: Layup and Storage ........................................................ E–1
Appendix F: Declaration of Conformity ............................................. F–1

x
 Table of Contents

Figures - Part 2 of 2 Page

Chapter 5
5-1 M-3425A Mounting Dimensions – Horizontal Chassis ..................... 5–2
5-2 M-3425A Mounting Dimensions – Horizontal
Chassis (Expanded I/O) ..................................................................... 5–3
5-3 M-3425A Panel Mount Cutout Dimensions .......................................... 5–4
5-4 M-3425A Mounting Dimensions – Vertical Chassis ........................ 5–5
5-5 (H2) Mounting Dimensions ................................................................. 5–6
5-6 (H3) Mounting Dimensions for GE L-2 Cabinet ................................ 5–7
5-7 (H4) Mounting Dimensions ................................................................. 5–8
5-8 (H5) Mounting Dimensions ................................................................. 5–9
5-9 Optional Dual Power Supply ............................................................ 5–10
5-10 Expanded I/O Power Supply ............................................................ 5–10
5-11 External Connections ....................................................................... 5–11
5-12 Three-Line Connection Diagram ....................................................... 5–12
5-13 Function 25 Sync Check Three-Line Connection Diagram ............. 5–13
5-14 Function 59X Turn-to-Turn Fault Protection Three-Line
Connection Diagram ......................................................................... 5–14
5-15 Function 67N, 59D, 59X (Bus Ground), Three-Line
Connection Diagram ......................................................................... 5–15
5-16 M-3425A Circuit Board ........................................................................5–23
5-17 M-3425A Circuit Board (Expanded I/O) ........................................... 5–24
5-18 Low Frequency Signal Injection Equipment Typical Connections .... 5–25
5-19 20 Hz Frequency Generator Housing Panel Surface Mount .......... 5–26
5-20 20 Hz Frequency Generator Housing Panel Flush Mount ...............5–27
5-21 20 Hz Band Pass Filter Housing Panel Surface Mount ................. 5–28
5-22 20 Hz Band Pass Filter Housing Panel Flush Mount ...................... 5–29
5-23 20 Hz Measuring Current Transformer 400-5 A CT ........................ 5–30

Chapter 6
6-1 Voltage Inputs: Configuration V1 ......................................................... 6–3
6-2 Voltage Inputs: Configuration V2 ......................................................... 6–3
6-3 Current Inputs: Configuration C1 .......................................................... 6–4
6-4 Current Inputs: Configuration C2 .......................................................... 6–4
6-5 Current Configuration C3 ...................................................................... 6–5
6-6 64S Test Configuration ........................................................................ 6–5
6-7 Field Ground Coupler ..........................................................................6–45
6-8 Status LED Panel ............................................................................... 6–70
6-9 M-3925A Target Module Panel ...........................................................6–71
xi
M-3425A Instruction Book

Figures (cont'd) Page

Chapter 6 (cont'd)
6-10 M-3931 Human/Machine Interface (HMI) Module ................................6–71
6-11 COM1/COM2 Loopback Plug ..............................................................6–72
6-12 RS-485 2-Wire Testing ........................................................................6–74
6-13 Current Input Configuration .................................................................6–79
6-14 Voltage Input Configuration ................................................................6–79
6-15 Voltage Input Configuration ................................................................6–79
6-16 Voltage Input Configuration ................................................................6–80

Appendix A
A-1 Human-Machine Interface (HMI) Module ........................................... A–6
A-2 Communication Data & Unit Setup Record Form ............................. A–7
A-3 Functional Configuration Record Form ............................................ A–10
A-4 Setpoint & Timing Record Form ...................................................... A–28

Appendix B
B-1 Null Modem Cable: M-0423 ................................................................ B–2
B-2 RS-232 Fiber Optic Network .............................................................. B–3
B-3 RS-485 Network ................................................................................... B–4
B-4 COM2 Pinout for Demodulated TTL Level Signal ............................. B–4

Appendix D
D-1 Volts/Hz (24) Inverse Time Curve Family #1 (Inverse Square) ....... D–2
D-2 Volts/Hz (24) Inverse Time Family Curve #2 ................................... D–3
D-3 Volts/Hz (24IT) Inverse Time Curve Family #3 ................................ D–4
D-4 Volts/Hz (24IT) Inverse Time Curve Family #4 ................................ D–5
D-5 BECO Definite Time Overcurrent Curve ........................................... D–8
D-6 BECO Inverse Time Overcurrent Curve ............................................ D–9
D-7 BECO Very Inverse Time Overcurrent Curve ................................. D–10
D-8 BECO Extremely Inverse Time Overcurrent Curve ........................ D–11
D-9 IEC Curve #1 – Inverse .................................................................. D–12
D-10 IEC Curve #2 – Very Inverse ......................................................... D–13
D-11 IEC Curve #3 – Extremely Inverse ................................................ D–14
D-12 IEC Curve #4 – Long Time Inverse .................................................. D–15
D-13 IEEE Inverse Time Overcurrent Curves ............................................ D–16
D-14 IEEE Very Inverse Time Overcurrent Curves .................................... D–17
D-15 IEEE Extremely Inverse Time Overcurrent Curves ........................... D–18
xii
 Table of Contents

Tables - Part 2 of 2 Page

Chapter 5
5-1 Jumpers ............................................................................................ 5–21
5-2 Dip Switch SW-1 .............................................................................. 5–22
5-3 Trip Circuit Monitor Input Voltage Select Jumper Configuration .... 5–22

Chapter 6
6-1 Output Contacts ............................................................................... 6–68
6-2 Input Contacts .................................................................................. 6–69

Appendix A
A-1 Relay Configuration Table .................................................................. A–2

Appendix B
B-1 Communication Port Signals ............................................................. B–2

Appendix C
C-1 Self-Test Error Codes ........................................................................ C–1
®
C-2 IPScom Error Messages ................................................................. C–2

Appendix D
D-1A M-3425A Inverse Time Overcurrent Relay Characteristic Curves ... D–6

©1998 Beckwith Electric Co. 800-3425A-IB-04MC2 07/08

Printed in U.S.A. (9.21.01)

xiii
M-3425A Instruction Book

This Page Left Intentionally Blank

xiv
 Installation – 5

5 Installation

5.1 General Information .................................................................... 5–1

5.2 Mechanical/Physical Dimensions .............................................. 5–2

5.3 External Connections ............................................................... 5–10

5.4 Commissioning Checkout ........................................................ 5–16

5.5 Circuit Board Switches and Jumpers ...................................... 5–21

5.6 Low Frequency Signal Injection Equipment ............................ 5–25

This equipment will function properly, and at stated

5.1 General Information accuracies beyond the limits of this CE Standard, as
per the equipment's specifications, stated in this
■ NOTE: Prior to installation of the equipment, it is Instruction Book.
essential to review the contents of this
manual to locate data which may be of It is suggested the terminal connections illustrated
importance during installation procedures. here be transferred to station one-line wiring and
The following is a quick review of the three-line connection diagrams, station panel drawings
contents in the chapters of this manual. and station DC wiring schematics.

The person or group responsible for the installation If during the commissioning of the M-3425A Generator
of the relay will find herein all mechanical information Protection Relay, additional tests are desired, Chapter
required for physical installation, equipment ratings, 6, Testing, may be consulted.
and all external connections in this chapter. For
The operation of the relay, including the initial setup
reference, the Three-Line Connection Diagrams are
procedure, is described in Chapter 3, Operation,
repeated from Chapter 2, Application. Further, a
for HMI front panel users and in Chapter 4, Remote
commissioning checkout procedure is outlined using
Operation, when using a personal computer. Section
the HMI option to check the external CT and VT
3.1, Front Panel Controls, details the front panel
connections. Additional tests which may be desirable
controls.
at the time of installation are described in Chapter
6, Testing. Section 3.2, Initial Setup Procedure/Settings, details
the HMI setup procedure. This includes details
Service Conditions and Conformity to CE necessary for input of the communications data, unit
Standard setup data, configure relays data, the individual
Stating conformance to CE Standard EN 61010-1 setpoints and time settings for each function, and
2001, operation of this equipment within the following oscillograph recorder setup information. Section 3.5,
service conditions does not present any known Status/Metering, guides the operator through the
personnel hazards outside of those stated herein: status and metering screens, including monitoring
the status. Section 3.6 includes information on viewing
• 5° to 40° Centigrade the target history.
• Maximum relative humidity 80% for
temperatures up to 31° C, decreasing in a
linear manner to 50% relative humidity at
40° C.

5–1
 M-3425A Instruction Book

5.2 Mechanical/Physical
Dimensions

Figures 5-1 through 5-8 contain physical dimensions

of the relay that may be required for mounting the
unit on a rack.
17.48 [44.4]
ACTUAL

5.21 [13.23]
ACTUAL

Rear View

10.20 [25.91]

19.00
[48.26]

19.00 [48.26]
0.33
18.34 [46.58] [0.84]

0.40 [1.02] x 0.27 [0.68] SLOT (4x)

2.35 [5.96]

1.35 [3.42]

Standard 19" Horizontal Mount Chassis

n NOTE: Dimensions in brackets are in centimeters.

Figure 5-1 M-3425A Mounting Dimensions – Horizontal Chassis

5–2
 Installation – 5

PANEL CUTOUT
.12
17.50± .00
[44.5 +.30 -.00]

9.97
[25.32]

19.00
[48.26]
.25 X .45 SLOT [.64 X 1.14]
4 PLACES

OUTPUTS
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

COM 1
RELAY BRKR
TARGET
TARGET
4.00 OK CLOSED TARGET PS 2
RESET
[10.16]
TIME OSC. PS 1
6.96 SYNC TRIG
[17.68]
M-3425A
GENERATOR PROTECTION
R

B EC KWIT H
CO . INC .
E L EC T R IC
OUTPUTS
Made in U.S.A. EXIT ENTER OUT 1 OUT 3 OUT 5 OUT 7
1.48 OUT 2 OUT 4 OUT 6 OUT 8
3.76

0.33 18.34
[0.84] [46.58]

Figure 5-2 M-3425A Mounting Dimensions – Horizontal Chassis (Expanded I/O)

5–3
 M-3425A Instruction Book

18.34
.33 [46.6]
[.84] 17.68
[44.91]

1.48
[3.76]

2.25
[5.72]
5.28
[13.40]
\U+2205.28 (4X)

RECOMMENDED CUTOUT
STANDARD 3 UNIT PANEL M-3425A

18.34
[46.6]
.33
[.84] 17.68
[44.91]

1.48
[3.76]

7.03
[17.86]
4.00
[10.16]

\U+2205.28 (4X)

RECOMMENDED CUTOUT
4 UNIT PANEL M-3425A (EXTENDED I/O)
TOLERANCE: .XX±.015

Figure 5-3 M-3425A Panel Mount Cutout Dimensions

5–4
 Installation – 5

5.65
[14.40]
5.59
0.40 [1.02] X 2.25 1.67 [14.20]
0.27 [0.68] [5.72] [4.24] Actual
Slot (4X)

19.00
[48.26]

18.34
[46.58] 17.5
[44.45]

17.31
[43.97]
Actual

Front View Rear View

NOTE: Dimensions in brackets RECOMMENDED CUTOUT WHEN RELAY IS
are in centimeters. NOT USED AS STANDARD RACK MOUNT
AND IS PANEL CUT OUT MOUNTED
Optional Vertical Mount Chassis

Figure 5-4 M-3425A Mounting Dimensions – Vertical Chassis

■ NOTE: Expanded I/O not available in Vertical Mount Chassis

5–5
M-3425A Instruction Book

.39
[0.99] 1.91 2.25
[4.85] [5.71]

.261 [0.66]
Diameter
4 Holes

8.72
[22.15]

Recommended
Panel Cutout
Dimensions

18.21
[46.25] 2.80 2.80
19.00 [7.12] [7.12]
[48.26]

8.72
[22.15]

Max. Depth
of Unit:
10.50
[26.67]

6.19
[15.72]
n NOTE: Dimensions in
brackets are in centimeters. Front View
Figure 5-5 (H2) Mounting Dimensions

5–6
 Installation – 5

.75 6.13
[15.57]
1.04 5.56
[2.64] [14.12]

.261 [0.66]
Diameter
6 Holes

8.72
[22.15]

Recommended
Panel Cutout
Dimensions
18.50
[46.99]

2.80 2.80
[7.12] [7.12]
20.78
[52.78]

15.56
[39.52]

8.72
[22.15] 7.78
[19.76]

Max. Depth
of Unit:
10.50
[26.67]

2.60
[6.60]
1.14

7.63
[19.38]

Front View
n NOTE: Dimensions in brackets
are in centimeters.

Figure 5-6 (H3) Mounting Dimensions for GE L-2 Cabinet

5–7
M-3425A Instruction Book

Ø.281
[Ø0.71]
10 HOLES

9.70
[24.64]

Recommended
19.89 Panel Cutout
[50.52] Dimensions

20.78
[52.78] 3.48 3.48
[8.84] [8.84]
17.72
[45.00]

9.94
[25.24] 9.70
[24.64]

2.15
[5.47]

.45
[1.13]
.41
[1.04] 1.13
[2.87] 6.69
[16.99] 7.81
8.63 [19.84]
[21.92]
■ NOTE: Dimensions in
brackets are in centimeters.

Front View
Figure 5-7 (H4) Mounting Dimensions

5–8
 Installation – 5

∅ .28
[∅ 0.71]
10 HOLES

9.70
[24.64]

20.78
[52.78]

19.89
[50.52]
3.53 3.53
[8.97] [8.97]
17.72
[45.00]

9.94
[25.24] 9.70
[24.64]

2.15
[5.47]

.45
[1.13]
.41
[1.04]
1.13
[2.87]
6.69
[16.99]
7.81
[19.84]
8.63
[21.92]

FRONT VIEW (H5)

Figure 5-8 (H5) Mounting Dimensions

5–9
 M-3425A Instruction Book

Ic PS 2 PS 1 PS2 PS1
5.3 External Connections + - + -
F1 F2

8 WARNING: The protective grounding terminal 58 59 60

18 - 5 6
61 62 63
18 - 5 6
3 A MP,2 5 0 V ( 3 A B)

must be connected to an earthed ground anytime 85 265 85 265

F3 F4

external connections have been made to the

unit.
8 WARNING: ONLY DRY CONTACTS must be + -
connected to inputs (terminals 5 through 10
with 11 common and terminals 68 through 75 Figure 5-10 Expanded I/O Power Supply
with 66 and 67 common) because these contact
inputs are internally wetted. Application of Grounding Requirements
external voltage on these inputs may result in The M-3425A is designed to be mounted in an
damage to the units. adequately grounded metal panel, using grounding
8 WARNING: Do not open live CT circuits. Live
techniques (metal-to-metal mounting) and hardware
that assures a low impedance ground.
CT circuits should be shorted prior to
disconnecting CT wiring to the M-3425A. Death
or severe electrical shock may result. Unit Isolation
Sensing inputs should be equipped with test switches
▲ CAUTION: Mis-operation or permanent damage and shorting devices where necessary to isolate
may result to the unit if a voltage is applied to the unit from external potential or current sources.
Terminals 1 and 2 (aux) that does not match the
configured Trip Circuit Monitoring input voltage. A switch or circuit breaker for the M-3425A's power
shall be included in the building installation, and shall
To fulfill requirements for UL and CSA listings, be in close proximity to the relay and within easy
terminal block connections must be made with No. reach of the operator, and shall be plainly marked as
12 AWG solid or stranded copper wire inserted in being the power disconnect device for the relay.
an AMP #324915 (or equivalent) connector, and
wire insulation used must be rated at 60° C minimum.
Insulation Coordination
Sensing Inputs: 60 V to 140 V, Installation Category
Power Supply
IV, Transient Voltages not to exceed 5,000 V.
When the M-3425A without expanded I/O is equipped
with the optional second power supply (Figure 5-9) ,
the power source may be the same or two different Torque Requirements
sources. • Terminals 1–34 & 66–105: 7.5 in-lbs,
minimum, and 8.0 in-lbs, maximum
Ic PS 2 PS 1 PS2 PS1 • Terminals 35–65: 8.5 in-lbs, minimum,
+ - + - and 9.0 in-lbs, maximum
F1 F2

3 A MP,2 5 0 V ( 3 A B)
58 59 60
18 - 5 6
61 62 63
18 - 5 6
Relay Outputs
85 265 85 265
F4
F3
All outputs are shown in the de-energized state for
standard reference. Relay standard reference is defined
as protective elements in the non-trip, reconnection
and sync logic in the non-asserted state, or power to
+ - +- the relay is removed. Output contacts #1 through #4
are high speed operation contacts. The power supply
Figure 5-9 Optional Dual Power Supply
relay (P/S) is energized when the power supply is OK.
The self-test relay is energized when the relay has
When the M-3425A with expanded I/O is equipped performed all self-tests successfully.
with two (not redundant) power supplies, the power
supplies must be powered from the same source.
Replacement Fuses
F1–F4 replacement fuses must be fast-acting 3
Amp, 250 V (3AB) Beckwith Electric Part Number
420-00885.

5–10
Installation – 5

5–11
BECKW IT H ELECT RIC CO . INC.
6 19 0 118 t h AV E NO . W A RNING! CO NT A CT W IT H T ERMINA L S MA Y CA US E EL ECT RIC S HO CK MODEL: M-3425A FIRMWARE: D-0150
L A RGO , FL 3 3 7 7 3 727- 5 4 4 - 23 26 FO R CO NT A CT RA T INGS S EE INS T RUCT IO N MA NUA L
5 0 Hz 6 0 Hz S ERIA L NO .
66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 97
IN IN IN IN IN IN IN IN IN
RT N 14 13 12 11 10 9 8 7
C R US 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
INPUTS OUT PUTS
2
83F4
LIST ED
IND. CONT . EQ .
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
IRIG- B COM 2
RS 2 3 2
1
!
24
48 - + - + IN
6
IN
5
IN
4
IN
3
IN
2
IN
1
IN
RT N
COM 2 125
! P/ S S ELF- T EST 8 7 6 5 4 3 2 1
ETHERNET 250 RS 4 8 5 (5 2 b)
A UX COM 3 INPUTS A LA RMS OUT PUTS
V V V
A B C VN IA IB IC IN Ia Ib Ic PS 2 PS 1 PS2 PS1
F IE L D G N D VA B
! VB C VC A
- -
COUPLER + +
F1 F2
3 A MP,2 5 0 V ( 3 A B)
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
64 VX 65 64S 18 - 5 6 18 - 5 6
64F 0 .0 1A NO M 85 265 85 265
F3 F4
4 RA T ED V O L T A GE
6 0 - 14 0 V A C,5 0 / 6 0 Hz
3 1A ,NO M
RAT ED CURRENT
5 A ,NO M
Figure 5-11 External Connections
!
■ NOTES:
1. See Section 2.3, Setpoints and Time Settings, subsection for 64B/F Field Ground Protection.
2. Before making connections to the Trip Circuit Monitoring input, see Section 5.5, Circuit Board Switches and Jumpers, for the information
regarding setting Trip Circuit Monitoring input voltage. Connecting a voltage other than the voltage that the unit is configured to may result
in mis-operation or permanent damage to the unit.
3. 8 WARNING: ONLY DRY CONTACTS must be connected to inputs (terminals 5 through 10 with 11 common and terminals 68
through 75 with 66 and 67 common) because these contact inputs are internally wetted. Application of external voltage on these
inputs may result in damage to the units.
4. 8 WARNING: The protective grounding terminal must be connected to an earthed ground any time external connections have
been made to the unit.
 M-3425A Instruction Book

1 Wire to split phase differential CTs for 4 Alarm output can be grouped to a single alarm
use with 50DT split phase function. at the discretion of user.
A B C
2 Required generator breaker status input 5 Available control output to service other relays
Other (52b). Contact is closed when generator for VT Fuse Loss can be designated.
Relays M-3425A
breaker is open. Use unit breaker 6 Input contact number is designated by user.
1
50 51 contact if no generator breaker present.
3 Output contact pairs designated by
1 user.
48 49
WARNING: ONLY dry contact inputs must be
M-3425A connected because these contact inputs are
1 internally wetted. Application of external
46 47
39 38 41 40 43 42 voltage on these inputs may result in
damage to the units.
NOTE : M-3425A current terminal polarity marks
( . ) indicate "entering" current direction when
A B C M-3425A
Three VT Wye-Wye primary current is "from" the generator to the
10
52 Alternate Connection system. If CT connections differ from those
52b
Gen 11
shown, adjust input terminals.

A A

B B

C C

42 43 40 41 38 39 42 43 40 41 38 39

Three VT Wye-Wye Two Vt Open-Delta

Connection Connection
M-3425A M-3425A

Generator
M-3921 a b c a b c
Field Ground
Coupler Module Other Other
Relays M-3425A Relays M-3425A
Other
a b c Relays M-3425A 59 58 59 58
58 59

57 56 57 56
56 57
OR OR
55 54 55 54
54 55

M-3425A M-3425A

45 44 52 53
R OR
High Impedance Grounding R Low Impedance Grounding

Example of Control/Output Connections

+

DC: 24V M-3425A +

60 62 6 3 16 12 3 3
48V
Power
Supply 61 63 11 10
- 15 13
OR
DC: 110V 2
125V 5
220V 52b 60FL TRIP SELF- POWER VT 52G
250V ALARM TEST OK FUSE
BREAKER OSCILLOGRAPH FAILURE STATUS LOSS
AC: 110V FAILURE RECORDER 52Ga
INITIATE INITIATE ALARM ALARM
120V
230V -
240V
EXTERNAL ALARM 4 CONTROL TRIP
INPUTS OUTPUTS OUTPUTS OUTPUT

Figure 5-12 Three-Line Connection Diagram

5–12
 Installation – 5

M-3425A
65 Used when Generator
VX
Side VTs are connected
Line-Ground.
64

OR V X Used for Sync Ch

M-3425A
65
VX Used when Generator Side
64 are connected Line-Lin

A B C M-3425A

52 10
52b
Gen 11

A B C

M-3425A

39
Three VT Wye-Wye
38 Connection

41

40

43

42

OR
M-3425A

42
A B C

43 Two VT Open-Delta
Connection

40

41

38

39

Generator

Figure 5-13 Function 25 Sync Check Three-Line Connection Diagram

5–13
 M-3425A Instruction Book

A B C M-3425A

10
52
52b
Gen 11

A B C

M-3425A

VX
65
R
64

V X used for turn-to-turn

fault protection (59X)

Generator

a b c
Line to Neutral
Voltage Rated
Cable

M-3425A
M-3425A
52 53
OR R
45 44

R Low Impedance Grounding

High Impedance Grounding

Figure 5-14 Function 59X Turn to Turn Fault Protection Three-Line Connection Diagram

5–14
 Installation – 5

Bus Section
A

M-3425A

53
R Residual CT I N input can be connected
52 either at Neutral or as Residual.

M-3425A
67N
65 64 Connection

59X A B C M-3425A
Bus Ground
52 10
52b
Gen
11

A B C

M-3425A

VX
65
R
64

67N, 59D
Connection

VX can be used for both 67N and

Generator
59D if connected in this manner.

a b c

M-3425A
I N input can be connected
52 53
either at Neutral or as Residual.

R Low Impedance Grounding

OR
M-3425A

45 44
R

High Impedance Grounding

Figure 5-15 Function 67N, 59D, 59X (Bus Ground) Three-Line Connection Diagram

5–15
 M-3425A Instruction Book

7. Press ENTER to display Third Harmonic

5.4 Commissioning Checkout Differential Ratio:

During field commissioning, check the following to 3RD HARMONIC DIFF RATIO
ensure that the CT and VT connections are correct. __________

1. Press ENTER. After a short delay, the Press ENTER once more to display the
unit should display line side Third Harmonic Voltage:

VOLTAGE RELAY 3RD HARMONIC 3V0 VOLT

VOLT curr freq v/hz pwr J __________

2. Press the right arrow button until the unit 8. Press ENTER to display Stator Low
displays: Frequency Injection (20 Hz) Voltage:

STATUS STATOR LOW FREQUENCY INJECT.

I config sys STAT J _____ Volts

3. Press ENTER. The unit should display: 9. Display positive, negative and zero
sequence voltages. Press ENTER until
the unit displays:
VOLTAGE STATUS
VOLT curr freq v/hz J
POS SEQUENCE VOLTAGE
_____ Volts
4. Press ENTER. The unit should display
either V A , V B , V C (line-to-ground
connections) or VAB, VBC, VCA (line-to-line The positive sequence voltage should be
or line-ground to line-line connections). VPOSy VA y VB y VC or VAB y VBC y VCA.

PHASE VOLTAGE 10. Press ENTER until the unit displays:

A= B= C=
NEG SEQUENCE VOLTAGE
____ Volts
Compare these voltages with actual
measurements using a voltmeter. If there The negative sequence voltage should
is a discrepancy, check for loose be VNEGy 0.
connections to the rear terminal block of
the unit. If line-ground to line-line voltage 11. Press ENTER until the unit displays:
selection is used, the voltages displayed
are S3 times of the line-ground voltages ZERO SEQUENCE VOLTAGE
applied.
____ Volts

5. Press ENTER to display the Neutral The zero sequence voltage should be
Voltage: VZEROy0.
If the negative sequence voltage shows
NEUTRAL VOLTAGE a high value and the positive sequence
_____ Volts voltage is close to zero, the phase
sequence is incorrect and proper phases
The neutral voltage should be near zero must be reversed to obtain correct phase
volts. sequence. If the phase sequence is
incorrect, frequency- and power-related
functions will not operate properly and
6. Press ENTER to display VX Voltage:
the Frequency Status menu will read
DISABLE.
VX VOLTAGE
_____ Volts If positive, negative and zero sequence
voltages are all present, check the polarities
of the VT connections and change
connections to obtain proper polarities.
5–16
 Installation – 5

12. Press ENTER until the unit displays: 19. Press ENTER for the unit to display:

3RD HARMONIC NTRL VOLT NEUTRAL CURRENT

_____ Volts ______ Amps

13. Press ENTER until the unit displays: 20. Press ENTER for the unit to display:

FIELD GND MEAS. CIRCUIT GND DIFFERENTIAL CURRENT

_______ mV ______ Amps

21. Press ENTER for the unit to display:

14. Press EXIT until the unit displays:
STATOR LOW FREQ INJECT.
VOLTAGE STATUS
I= ___ mAmps
VOLT curr freq v/hz J
22. Press ENTER to display:
15. Press the right arrow to display:
POS SEQUENCE CURRENT
CURRENT STATUS ______ Amps
volt CURR freq v/hz J
The positive sequence current should be
IPOS y Iay Ib y Ic.
16. Press ENTER to display line currents
(IA, IB, IC). The unit should display: 23. Press ENTER to display:

PHASE CURRENT NEQ SEQUENCE CURRENT

A= B= C= ______ Amps

Compare these currents with the Negative sequence current should near
measured values using a meter. If there zero amperes.
is a discrepancy, check the CT
connections to the rear terminal block of
24. Press ENTER to display:
the unit.
ZERO SEQUENCE CURRENT
17. Press ENTER for the unit to display: ______ Amps

PHASE CURRENT The zero sequence current should be

a= b= c= IZEROy0 A. If a significant amount of
negative or zero sequence current
Compare these currents with the (greater than 25% of IA, IB, IC,) then
measured values using a meter. If there either the phase sequence or the
is a discrepancy, check the CT polarities are incorrect. Modify
connections to the rear terminal block of connections to obtain proper phase
the unit. sequence and polarities.

18. Press ENTER for the unit to display: 25. Press ENTER to display:

DIFFERENTIAL CURRENT F49 THERMAL CURRENT #1

A= B= C= ______ Amps

Differential current should be near zero Press ENTER once more to display:
amps. If a significant amount of
differential current is present, check the F49 THERMAL CURRENT #2
CT polarities. ______ Amps

5–17
M-3425A Instruction Book

26. Press EXIT, then the Right arrow to 35. Press ENTER to display:
display:
POWER FACTOR
FREQUENCY STATUS __ Lag/Lead
volt curr FREQ v/hz J
36. Press EXIT and then right arrow to
display:
27. Press ENTER to display:
IMPEDANCE STATUS
FREQUENCY
I powr IMPED sync brkr J
________ Hz

28. Press ENTER to display: 37. Press ENTER to display:

RATE OF CHANGE FREQUENCY IMPEDANCE Zab (Ohms)

___ Hz/Sec R= X=

29. Press EXIT, then right arrow to display: Press ENTER once more to display:

V/HZ STATUS IMPEDANCE Zbc (Ohms)

volt curr freq V/HZ J R= X=

30. Press ENTER to display: Press ENTER once more to display:

VOLTS PER HERTZ IMPEDANCE Zca (Ohms)

_________ % R= X=

31. Press EXIT, then right arrow to display: 38. Press ENTER to display:

POWER STATUS IMPEDANCE POS SEQ (Ohms)

I POWR imped sync brkr J R= X=

32. Press ENTER to display real power and 39. Press ENTER to display:
check its sign. The unit should display:
FIELD GND RESISTANCE
REAL POWER ______ Ohms
________ PU _______ W

The sign should be positive for forward 40. Press EXIT and then right arrow to
power and negative for reverse power. If display:
the sign does not agree with actual
conditions, check the polarities of the SYNC CHECK STATUS
three neutral-end CTs and/or the PTs. I powr imped SYNC brkr J

33. Press ENTER for the unit to display: 41. Press ENTER to display:

REACTIVE POWER PHASE ANGLE

________ PU _____ VAr ___ DEGREES

34. Press ENTER for the unit to display: 42. Press ENTER to display:

APPARENT POWER DELTA VOLTAGE

________ PU ______ VA _____ Volts LO

5–18
 Installation – 5

43. Press ENTER to display: 50. Press ENTER to display:

DELTA FREQUENCY FL I6 I5 I4 I3 I2 I1
_____ Hz HI

Press ENTER again to view outputs:

44. Press EXIT, then right arrow until unit
displays: O8 O7 O6 O5 O4 O3 O2 O1

BREAKER MON ACC. STATUS

I power imped sync BRKR J
51. Press EXIT, then arrow button to display:
45. Press ENTER to display:
TIMER STATUS
BREAKER MON ACC. STATUS I freq_acc i/o TIMER J
A= A-cycles
52. Press ENTER to display:
Press ENTER to cycle through Acc.
Status screens for B and C.
51V DELAY TIMER
A= B= C=
46. Press EXIT, then right arrow until unit
displays: 53. Press ENTER to display:

81A ACCUMULATORS STATUS 51N DELAY TIMER

I FREQ_ACC i/o timer J _________ %

47. Press ENTER to display: 54. Press ENTER to display:

81A #1 ACCUMULATORS STAT 46IT DELAY TIMER

____ Cycles _________ %

Pressing ENTER will display a status 55. Press ENTER to display:

screen for each of the six elements.
24IT DELAY TIMER
_________ %
48. Press ENTER to display:

81A #1 ACC. STARTUP TIME 56. Press EXIT, then right arrow until unit
00-20XX 00:00:00:000 displays:
Pressing ENTER will display a status RELAY TEMPERATURE
screen for each of the six elements. I TEMP count powerup J

49. Press EXIT, then right arrow until unit 57. Press ENTER to display:
displays:
RELAY TEMPERATURE
IN/OUT STATUS
________ C
I freq_acc I/O timer J

5–19
 M-3425A Instruction Book

58. Press EXIT, then right arrow until unit 66. Press ENTER to display:
displays:
COMM ERROR CODE (LAST)
COUNTERS __________
I temp COUNT powerup J
67. Press ENTER to display:
59. Press ENTER to display:
COMM PACKET COUNTER
__________
OUTPUT COUNTER 1
__________
68. Press ENTER to display:
Pressing ENTER will display a status
screen for each of the 23 outputs. COMM RX ERROR COUNTER
__________

60. Press ENTER to display: 69. Press ENTER to display:

ALARM COUNTER SELFTEST COUNTER

__________ __________

70. Press ENTER to display:

61. Press EXIT, then right arrow until the
unit displays: RESET COUNTER
__________
TIME OF LAST POWER UP
I temp count POWERUP J 71. Press ENTER to display:

62. Press ENTER to display: POWERLOSS COUNTER

__________
TIME OF LAST POWER UP
05-Jan-2003 20:39:29
72. Press EXIT, then right arrow until the
unit displays:
■ NOTE: The CT and VT polarities can be easily
verified by looking at the oscillographic CHECKSUMS
waveforms, using M-3801D IPSplot® I error CHECK
PLUS analysis software.
73. Press ENTER to display:
63. Press EXIT, then right arrow until the
unit displays: SETPOINTS CHECKSUM
EECS= BBCS= CAL=
ERROR CODES
I ERROR check
74. Press ENTER to display:

64. Press ENTER to display: CALIBRATION CHECKSUM

EECS= BBCS= CAL=
ERROR CODES (LAST)
__________
75. Press ENTER to display:
Pressing ENTER will display a status
ROM CHECKSUM
screen for three previous error codes.
__________
65. Press ENTER to display:

RST LOCATION
0000 CBR=___ BBR=___

5–20
 Installation – 5

1. De-energize the M-3425A.

5.5 Circuit Board Switches and
Jumpers 2. Remove the screws that retain the front
cover.
See Figure 5-16, M-3425A Circuit Board for Jumper 3. Remove the "J" connectors from the
and Switch locations. corresponding plugs, P4, 5, 6, 7, 9 and
11.
Accessing Switches and Jumpers 4. Loosen the two circuit board retention
8 WARNING: Operating personnel must not
screws (captured).
remove the cover or expose the printed circuit 5. Remove the circuit board from the
board while power is applied. IN NO CASE may chassis.
the circuit-based jumpers or switches be moved
6. Jumpers J5, J18, J20, J21, J22, J46,
with power applied. J60, and J61 are now accessible. See
8 WARNING: The protective grounding terminal Figure 5-16, M-3425A Circuit Board for
must be connected to an earthed ground any locations.
time external connections have been made to 7. Dipswitch SW1 is now accessible. See
the unit. See Figure 5-11, Note #4. Figure 5-16 for location.
▲ CAUTION: This unit contains MOS circuitry, 8. Insert circuit board into chassis guides
which can be damaged by static discharge. Care and seat firmly.
should be taken to avoid static discharge on work 9. Tighten circuit board retention screws.
surfaces and service personnel.
10. Reconnect "J" connectors to
corresponding plugs.
11. Reinstall cover plate.

JUM PER POSITION DESCRIPTION

A to B Demodulated IRIG- B TTL signal on pin 6 COM2

J5
B to C Modulated IRIG- B signal BNC (Default)

A to B COM3 200 ohm termination resistor inserted

J18
B to C COM3 no termination (Default)

A to B COM3 shares Baud rate with COM1

J46
B to C COM3 shares Baud rate with COM2 (Default)

A to B Connects DCD signal to pin 1 of COM2 (Default)

J60
A to C Connects +15V to pin 1 of COM2

B to C Connects - 15V to pin 9 of COM2

J61
A to B COM2 pin 9 float (Default)

■ NOTE: Short circuit protection (100 ma limit) is incorporated on pins 1 and 9 when used for +/- 15V.
Table 5-1 Jumpers

5–21
 M-3425A Instruction Book

Dips witch SW1

1 2 3 4
Switches should not be changed
X X X Open (up) while unit is energized.

X Closed (down)

3 up 4 up Run Mode
3 up 4 down Initialize EEPROM to default* See Caution Below
3 down 4 up Initialize Access Codes and Communication*
3 down 4 down Factory Use
2 up Flash Update Disable (Factory Default)
2 down Flash Update Enable
1 up Dual Power Supply Unit
1 down Single Power Supply Unit
*Af t er power up, t he OK LED light remains of f and t he Diagnost ic LED will light when
operat ion has been sat isf act orily complet ed..

▲ CAUTION: A loss of calibration, setpoints, and configuration will occur when the EEPROM is initialized to
default.

Table 5-2 Dip Switch SW-1

TRIP CIRCUIT M ONITOR INPUT VOLTAGE SELECT

JUM PER J20 JUM PER J21 JUM PER J22

INPUT VOLTAGE
POSITION POSITION POSITION

24 V dc A to B A to B A to B

48 V dc B to C A to B A to B

125 V dc B to C B to C A to B

250 V dc* B to C B to C B to C

*Def ault as shipped f rom f act ory.

Table 5-3 Trip Circuit Monitor Input Voltage Select Jumper Configuration

5–22
 SW1
LED4 LED3 LED2 LED1
P1
1

+ + + +

SW2

R17

R21
J52
SW1 1 5
C17 4 1
C46

+
+
L14
L18
L20

L15
L17
L19

L16
L21

C45

U6
R124
+

+
R141
Q11
+
E151
R19

C99 C98 C100

U17
R76
C12

Q3
E149

20
+
TP1 2 26 2 P11 R75
P5 +
E150

25 19
2 10 1 1 C10
P9 C253
J80

C213 C102 C101

E153

1 9 U10 U9 R14
+
1 8 1 4 1 9 5
E158
E154
E159

P4 TP4 J57

1
1
+

J70 1

1
P7
R15
1

P6 P8 E162 R201 C251

R16
C31 R148 Q20
16 5 8 10 18 10 J95 C252
9 C7
R18

J6
L30 L31 L34 L35 6 C8 JP3 R145
C84 E122

E115
U1 E147 R149 C214
C121

C38 R200
C13

J4
C20

R98
J72

C199
R144 C33

E124
U7

L32
R50 R62 R42 R38 R88 R89 R87 TP2 +

C150
R156
+ TP3
E127

C116

E123
J71

C266

J82
A

C22
E181

C23
E116
C120

R147 C117

A B C
U3 R100

L33
BT1 E163 E182
+

R2

J1

C200
C220
C81

C148 E165
CO.INC.

CB

C219
+
U4
C228

C24
R210

D72

+
+ C265
R3

+ 1 C218 + E161

R131
J74
D80

J3
U19 E126

C201
U33

+
C29 E119 R181
C30 R143 E187 C35 C32 C124

C119
C118 J56 C15 U37 C212 E135 U38
R142

C157 E131 E160 E130 E111 R180 U21

C77

D34 D40 D30 D28 D25 D27 D23 E105 E183 1 E2 E1 Q12
C224
+
U45 U41 C B A E164 JP1
R13

C113 E178 E185

U15

R65
R45
J16

R53
R32
J63 E166

R41
R36
C216

E133

R34
E132 E134 J17
C123

C112 1 2
E110 C211
C122

U51

R205
R209
J62

C225
A B C
R220
C6 Q2

R44
R83

R40

R52
R35
R37

R64
R33
C305 U35 E107 U25A
C66 C72 C62 C60 C56 C58 C54

J102
C158 D5 R146 C301
U36

D42
Q25
J75

J45

C9 J76 C300

U35A
D3 C209 C4
C108 C107 R91 U14

D41
R92 +

R208
D6 C217 U25
1
+
C303 U24
C169

+
+
U11
ELECTRIC

E30 1 J14
BECKWITH

U16 C125
J60 C67 C73 C63 C61 C57 C59 C55 TP6 D48 C205 R20
+
BE#450-00226 P-1947 REV.

D4 R206 J2
C304 1 C208 C210 R10
C159 C307 C308 E200 U18
J47

R114
C19

C5 C207 C44 C170

R46 R58 R28 R54 R86 E145
C114 C21
D2

C204 U23
C115 J48
C160

R30
J96

J60 RT1 C26 C202 E142 J15

R23

R115

C154
1

B A C

L36
C43 J68
1
E129 C39 + J69 J67 J78 E143
+ J49
E93 C3

C14
2 C203

U5
Y1
U2 U8 D13
B C

U22
C161
J46

D32 D38 D21 D36 D20 R78

+
U12

C75 U20
A

C48
E112
E120

R49
R57
R26
C206

R60
C42 C11

R6
C16 J19

C168
E113 U26 IC,SMT,SO-44 U13
Q8 R120 R72 R71 R25
+
+
+
+

R11
C147

R8
+

R5

R61
R56
R27
E47 E48

R133
J54
J5

R132

R48
D12

R7
Q10
R121
R22
C34

R122
C64 C70 C52 R31 C50
C41 D75
C68 J73 C85 C49

+
R140
E180

J51
C27 D76 1

C B A
D11 R4
R9
R123 TP5 D62 C86 D64

C
D61 D63
R79

J50 C B A
J53

C40 D9 R117

R12

B
1

J5
+
R134
R118
R119

K9

A
C65 K10 D56 D55 K6 K5 K4 K3 K2 K1

C25
C71 C53 C69 C51
J79 K8
R152 R150 R151 C221 C222

R256
K7 D54
J61 C B A
J61
C223 2 D60 D57
T1 RT2 R257 D59
U44 Q1
R197
C167 C166 C165 C164 C163 C162

C92
C145
C126

D94

C94
C93

R185
C91
U27 U28 U29 U30 U31 U32

C95
R190

U34

D93
C151 R153 R154

C96
L9 J18
R155 A B C

R194
D90

R184
D91

C97
D18 R130 R129 R128 R127 R126 R125
C136
C129

D46
C131

D43 D44 D45 D47

C134
C139
C130

C140

J21 J22 RT3

A
A
R1

A
R29

C250
C149

D92

B
B
B
D96 L4 L3 C76 C78 C80

R183
L13 L5 L7 L8 C47 C74 C82

C
C
C
R68
R69
R70

D95

R67

R66

R24
L28
C128

J20 L37 D70 D69 D68 D67

D71 D66

L12

C37
C36
C146
C127
C135
C138
C132
C141
C142
C143

L38
VR25

L6 L10 L11
5 1
VR3

VR20

R182
VR18
VR17
VR16
VR21
VR15
VR14
VR13
VR12
VR11

VR22
VR19
C133
C144

C137

P2 C83 C260 VR1 L27 VR4 L26 VR5 L25 VR6 L24 VR7 L23 VR8 L22
C79
VR9
P3

J20 J22 J46

J21 J18

5–23
Installation – 5

Figure 5-16 M-3425A Circuit Board

 DS14 DS12 DS10 DS8 DS6 DS4 DS2 DS15 DS13 DS11 DS9 DS7 DS5 DS3 DS1
+ + + + + + + + + + + + + + +
R36 R28 R23 R18 R10 R7 R2 R43 R35 R27 R22 R17 R9 R5 R1
D69 D67 D65 D63 D61 D59 D57 D53 D51 D49 D47 D45 D43
D55 D41
D70 D68 D66 D64 D62 D60 D58 D56 D54 D52 D50 D48 D46 D44 D42
P1 P2 P3
D23

D16
R16

U7

+
R13

D19

D17

E5 C47 C39 C33

E2 E1 E4
D7
C35

D15 D14 R15

D8
R39

R31

R40

R32

R25

R20

R4
R11
C94

C32
C74

C96

C76

C59

C40

C22

C10

C34
R14 D11
U2 U1
U5 U4

+
U12 U10 U13 U11 U9 U8 U6 U3 C103

R46
R47
R44

R45
D36

D28

D37

D29

D24

D18

D9

D3

BECKWITH
CO. INC. C31
ELECTRIC
P-1982 REV 3
BE# 450-00232

RV14
FB10
+
C57

C58

C56
D38

D32

D25

D20

D10
D31

D39

D4

R6

C53
R21

R12
R33

R41

R26
R34

FB11
R42

C68

C85

C69

C52

C38

C21

C9
C84

R3

D35 D33 D27 D22 D13 D6 D2 D40 D34 D30 D26 D21 D12 D5 D1
C98 C82 C99 C83 C63 C44 C24
R38
R29

R30
R37

R24

R19

R8

C12
M-3425A Instruction Book

RV22 RV18 RV23 RV19 RV15 RV11 RV8 RV5 K14 K12 K10 K8 K6 K4 K2 K15 K13 K11 K9 K7 K5 K3 K1
FB9 FB7 FB5 FB8 FB6 FB4 FB3 FB2 FB1
C92 C80 C66 C50 C36 C19 C7 C106 C105 C90 C78 C64 C48 C29 C17
C5
C93 RV21 C81 RV17 C67 RV13 C51 RV10 C37 RV7 C20 RV4 C8 RV2 RV24 C91 RV20 C79 RV16 C65 RV12 C49 RV9 C30 RV6 C18 RV3 C6 RV1

5–24
Figure 5-17 M-3425A Circuit Board (Expanded I/O)
 Installation – 5

5.6 Low Frequency Signal

Injection Equipment

Figure 5-18 represents typical connections for the

Low Frequency Signal Injection Equipment. Figures
5-19 through 5-23 illustrate equipment mounting
dimensions.

20 Hz
Supply
Generator Voltage
20 Hz DC AC
1A1 +VAux VA(L1)
Band Pass
1A2 -VAux VB(L2)
Filter
1A3 VC(L3)
1B1 1B4 4A1
2A1 External
Bl
2A3 Block
1A1
3A2 Device
Neutral 400A
RL 59N 1A3 1A4 Wiring Operative
Grounding 5A 3A3
L K Shielded
Transformer 4A3 3A1
l k High
400/5 A Voltage
20 Hz CT

M-3425A
Low Max. 200 V
Voltage 44 45
VN

52 53
IN

Figure 5-18 Low Frequency Signal Injection Equipment Typical Connections

5–25
M-3425A Instruction Book

, , .

Connector modules

Connectors:
Connectors :

Screwed terminal for max. 1.5 mm 2.

Twin spring crimp connector in paral-
lel for max. 1.5 mm 2.

Dimensions in mm

Figure 5-19 20 Hz Frequency Generator Housing Panel Surface Mount

5–26
 Installation – 5

, 29. 172 2~ 225

t Mounting pial.
Mounling plate
220

t-
l-

...""...
""
t-
,.... , ,
~
N

•
t-
l- ,
r::t-::t- ;.
t-~ ~ .M-
Ir-
t-t - ....".---L' L
- -- -- - 'M
t-t
--;7- - - - -
~
Connector modules
+2

Connectors:
R1
fl1 5 or M4
50rM4
max.. 1.5 mm 2.
Screwed terminal for max
Twin spring crimp connector in paral-
lel for max. 1.5 mm2.,

Panel cut-out
cut - out

Dimensions in mm

Figure 5-20 20 Hz Frequency Generator Housing Panel Flush Mount

5–27
M-3425A Instruction Book

225 172

r
I"
220 ."I,
-.
Side view

.-• - - - 31 .8 !:O.3
i--
1: 0 .3

, , .,a
"
W
m
;i
N

o>iI
«*II -
L;..
L;.' - 31 .8 !0.3
,!O.3

I 239.5 !O.3 1 Set square *)

Distance piece *)

Dimensions in mm

Top view

Figure 5-21 20 Hz Band Pass Filter Housing Panel Surface Mount

5–28
 Installation – 5

225 29.5 , 172 30 ,

220 I~ ____
_____
~ Mounting plate

I' ~ ~ ~
~ ~
~ ~
'I Set square *)

, ,
CD
1I ++
+-+ ~ ~
~ ~
~ ~
~

~ +++-+
., ~~"
32 Dimensions in mm

..,

M4(4x)

.,

Hole diameter 7 mm (ax)

for screws size M6

Figure 5-22 20 Hz Band Pass Filter Housing Panel Flush Mount

5–29
M-3425A Instruction Book

Figure 5-23 20 Hz Measuring Current Transformer 400-5 A CT

5–30
 Testing – 6

6 Testing

6.1 Equipment/Test Setup ............................................................... 6–2

6.2 Functional Test Procedures ....................................................... 6–6

Power On Self Tests ................................................................. 6–7
21 Phase Distance ..................................................................... 6–8
24 Volts per Hertz ...................................................................... 6–9
25D/25S Sync Check .............................................................. 6–12
27 Phase Undervoltage ............................................................ 6–16
27TN Third-Harmonic Undervoltage, Neutral ........................... 6–17
32 Directional Power, 3-Phase ................................................ 6–21
40 Loss of Field ....................................................................... 6–24
46 Negative Sequence Overcurrent ......................................... 6–26
49 Stator Overload ................................................................... 6–28
50 Instantaneous Phase Overcurrent ...................................... 6–30
50BF/50BF-N Breaker Failure .................................................. 6–31
50/27 Inadvertent Energizing ................................................... 6–33
50DT Definite Time Overcurrent for
Split-Phase Differential ............................................................ 6–34
50N Instantaneous Neutral Overcurrent .................................. 6–35
51N Inverse Time Neutral Overcurrent ................................... 6–36
51V Inverse Time Phase Overcurrent with
Voltage Control/Restraint ......................................................... 6–37
59 Phase Overvoltage ............................................................. 6–39
59D Third Harmonic Voltage Differential ................................. 6–40
59N Overvoltage, Neutral Circuit or Zero Sequence .............. 6–41
59X Multipurpose Overvoltage ................................................. 6–42
60FL VT Fuse Loss Detection ................................................ 6–43
64F Field Ground Protection .................................................... 6–44
64B Brush Lift Off Detection ................................................... 6–46
64S 100% Stator Ground Protection by Injection .................. 6–47
67N Residual Directional Overcurrent ..................................... 6–49
78 Out of Step ......................................................................... 6–53
81 Frequency ............................................................................ 6–55
81A Frequency Accumulator .................................................... 6–56
81R Rate of Change of Frequency .......................................... 6–57
87 Phase Differential ................................................................ 6–59
87GD Ground Differential ......................................................... 6–61
Breaker Monitoring ................................................................... 6–63
Trip Circuit Monitoring .............................................................. 6–65
IPSLogic ................................................................................... 6–66

6.3 Diagnostic Test Procedures .................................................... 6–67

6.4 Auto-Calibration ........................................................................ 6–76

6–1
M-3425A Instruction Book

6.1 Equipment/Test Setup

No calibration is necessary, as the M-3425A 6. For relays with the 64F/B option:
Generator Protection Relay is calibrated and fully
a. Resistor decade box capable of 500
tested at the factory. If calibration is necessary
ohms to 150 kOhms, able to step in
because of a component replacement, follow the 100 ohm increments.
auto calibration procedure detailed in Section 6.4,
Auto Calibration (or see Section 4.7, Calibration b. Capacitors ranging from 0.15 mf to
subsection for units without an HMI). These test 10 mf.
procedures are based on the prerequisite that the 7. For relays with the 64S option:
functions are enabled and have settings as described
a. 20 Hz Voltage Generator (variable) 0
in Chapter 2, Application, and that the unit is fitted
to 40 V.
with the optional HMI module.
b. 20 Hz Current Generator (variable) 0
to 40 mA.
Equipment Required
Setup
The following equipment is required to carry out the
test procedures: 1. Connect system power to the power input
terminals 62 (hot) and 63 (neutral). The
relay can be ordered with a nominal input
1. Two Digital Multimeters (DMM) with 10 power supply of 110/120/230/240 Vac,
A current range. 110/125/220/250 Vdc or 24/48 Vdc. An
2. 120 V ac or 0 to 125 V dc variable optional redundant power supply is
supply for system power. available.

3. Three-phase independent voltage sources

(0 to 250 V) variable phase to simulate ■ NOTE: The proper voltage for the relay is clearly
VT inputs. marked on the power supply label affixed
to the rear panel.
4. Three-phase independent current sources
(0 to 25 A) variable phase to simulate 2. For each test procedure, connect the
CT inputs. voltage and current sources according
5. Electronic timer accurate to at least 8 to the configuration listed in the test
ms. procedure and follow the steps outlined.

6–2
 Testing – 6

■ NOTE: The phase angles shown here use leading angles as positive and lagging angles as nega-
tive. Some manufacturers of test equipment have used lagging angles as positive, in which case
VB=120 V a120° and VC=120 V a240°. Similarly other voltages and currents phase angles should
be adjusted. These test configurations are for ABC phase rotation. They must be adjusted appropriate-
ly for ACB phase rotation.
39
Hot
Voltage
Input 1 VA = 120 V ac Ð0°
38
Neutral
41
Hot
Voltage
Input 2 VB = 120 V ac Ж120°
40
Neutral
43
Hot
VC = 120 V ac Ð120°
42
Neutral
45
Hot
Voltage
Input 3 VN
44
Neutral
65
Hot
VX
64
Neutral

Figure 6-1 Voltage Inputs: Configuration V1

39
Hot
Voltage Input 1
120 Ð30 VAB = 120Ð0°
38
Neutral
41

VBC = 120Ж120°
Neutral 40
Voltage Input 2
120 Ð90 43
Hot
VCA = 120Ð120°
42

45
Hot
Voltage Input 3
0 to 20 V ac VN
180 Hz 44
Neutral

Figure 6-2 Voltage Inputs: Configuration V2

6–3
M-3425A Instruction Book

Polarity 55

Current Input 1 Ia ∠0°

54

57

Current Input 2 Ib ∠–120°

56

59

Current Input 3 Ic ∠120°

58

Figure 6-3 Current Inputs: Configuration C1

Polarity 47

Current Input 1 IA ∠0°

46

49

Current Input 2 IB ∠–120°

48

51

IC ∠120°
50

Current Input 3
53

IN
52

Figure 6-4 Current Inputs: Configuration C2

6–4
 Testing – 6

Polarity 55
•
Current Input 1 aø I 0°
54 a

57
•
o
bø I 120
56 b

59
•
o
cø I 240
58 c

Polarity 47
•
Current Input 2 AØ 46 I 0°
A

49
•
o
BØ 48 I 120
B

51
•
o
CØ 50 I 240
C

Figure 6-5 Current Configuration C3

45
20 Hz
Voltage Source
(Variable) 44

53
20 Hz
Current Source
(Variable) 52

Figure 6-6 64S Test Configuration

6–5
M-3425A Instruction Book

The tests are described in this section in ascending

6.2 Functional Test Procedures function number order as used in Chapter 2,
Application.
This section details test quantities, inputs and
procedures for testing each relay function. The ■ NOTE: User should disable all functions not
purpose is to confirm the functions’ designated currently being tested before beginning
any function test.
output operation, the accuracy of the magnitude
pickup settings, and the accuracy of time delay
settings. Whereas the first test described, “Power During the lifetime of the relay, testing of individual
On Self Test”, does not require electrical quantity functions due to changes in application settings will
inputs, all other functional tests do require inputs, be more likely than an overall testing routine. An
and the necessary connection configurations are index of the individual test procedures is illustrated
noted. at the beginning of this chapter.
In all test descriptions, a process for calculating
input quantities to test the actual settings of the ■ NOTE: Care must be taken to reset or enable
function will be given if needed. Disable all other any functions that have been changed
functions not being tested at the time. This action is from their intended application settings
to prevent the operation of multiple functions with when the test procedures are complete.
one set of input quantities, which could cause
confusion of operation of outputs or timers. The Many options for test sequences and methods are
complete description of the method to disable/enable possible. As an example, the operation of the output
functions may be found in detail in Section 3.2, contacts can be tested along with the operation of
Initial Setup Procedure/Settings, Configure Relay the LEDs in the Diagnostic Test Procedures. The
Data subsection or Chapter 4, Remote Operation. operation of the output contacts may also be
The complete description of the method to install confirmed with the LED and function operation during
setting quantities may be found in Section 3.4, Functional Test Procedures, if desired.
System Data, Setpoints and Time Settings
subsection. If timer quantities are to be checked, the timer must
be activated by the appropriate output contacts.
It is desirable to record and confirm the actual The contact pin numbers are enumerated in Table
settings of the individual functions before beginning 6-1, Output Contacts.
test procedures. Use Figure A-3, Functional
Configuration Record Form and Figure A-4, Setpoint It is suggested that copies of the following be made
& Timing Record Form, found in Appendix A, for easy referral during test procedures:
Configuration Record Forms, to record settings. It
is also possible to download the relay settings into Input Configurations – pg 6–3 to 6-5
a file using IPScom®. Output Contact Numbers – pg 6–68
Relay Configuration Table – pg A–2
It may be desirable to program all test settings in an Setpoint & Timing Record Form – pg A–20
alternate profile, or to save the relay settings in
IPScom to preserve desired setup.

6–6
 Testing – 6

Power On Self Tests

VOLTAGE INPUTS: none

CURRENT INPUTS: none

1. Apply proper power to the power input terminals (60 HOT and 61 NEUTRAL).
2. The following sequence of actions will take place in the following order:
a. The unit will display the following:

POWER ON SELFTESTS
XXXXXXxxxxxxxxxxx

b. All LEDs will illuminate for approximately 1 second.

c. The POWER and RELAY OK LEDs will remain illuminated, all other LEDs will extinguish.
d. The unit will display the following:
POWER ON SELFTESTS
PASS

e. The unit will display the model number:

BECKWITH ELECTRIC CO.
M-3425A Expanded

f. The unit will display the firmware version.

BECKWITH ELECTRIC
D-0150xx.xx.xx

g. The unit will display the serial number.

BECKWITH ELECTRIC CO.
SERIAL NUMBER xxx

h. The POWER LED(s) will illuminate.

i. The RELAY OK LED will flash (or stay on as programmed in the diagnostic menu).
j. The BREAKER CLOSED LED will remain illuminated. If the relay breaker position contact
IN1 is connected to a breaker position contact (52b) and the breaker is open the LED will be
extinguished.

3. The power-on self-tests end with the unit displaying the system date, time and default logo.
4. If there are any recorded targets they are then displayed.

6–7
M-3425A Instruction Book

21 Phase Distance (#1, #2 or #3)

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: Configuration C1
TEST SETTINGS: Diameter P Ohms (0.1 to 100)
1 Amp CT Rating (0.5 to 500.0)
Offset O Ohms (–100 to 100)
1 Amp CT Rating (–500.0 to 500.0)
Impedance Angle A Degrees (0 to 90)
Time Delay D Cycles (1 to 8160)
Programmed Outputs Z Output (1 to 8)
Expanded I/O (9 to 23)
VT Configuration Line - Ground or Line-Line
■ NOTE: It would be efficient to disable the element with the higher “reach” (Diameter plus Offset)
setting first (lower current), and test the lower reach setting operation, since the higher
reach setting operation can be tested without disabling the lower setting.

Test Setup:
1. Determine the Function 21 Phase Distance settings to be tested.
2. Enter the Function 21 Phase Distance settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1.
6. The level of current at which pickup operation is to be expected for an individual setting is
determined as follows:
a. Define “reach” as R ohms = (P ohms + O ohms) [O, usually set at zero ohms].
b. For Line-Ground configuration, define “current” as I = ((Selected Voltage)I R ohms). The
voltage level may be selected based on the desired test current level. For Line-Line
configuration, define “current” as I = ((Selected Voltage/S3) I R ohms).
Pickup Test:
1. Set the three-phase voltages to the Selected Voltage value from Step 6b above.
2. Set the phase angle between the voltage and current inputs at (A) degrees from settings above
(for Line-Line configuration, set the phase angle at (A–30°).
3. Press and hold the TARGET RESET pushbutton, then slowly increase the three-phase input
currents until the 21 PHASE DISTANCE LED illuminates, or the pickup indicator illuminates on
the IPScom Function Status screen.
The level at which the 21 PHASE DISTANCE actuates should be equal to I calculated in Step 6
with the resulting impedance 0.1 ohms or 5%.
4. Release the TARGET RESET pushbutton, then decrease the three-phase input currents. The
assigned OUTPUT LEDs will extinguish.
5. Press the TARGET RESET pushbutton to reset targets.
Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately 110% of the current (I) found in Step 6, and start timing. The contacts will
close after D cycles within 1 cycle or 1%.
6–8
 Testing – 6

24 Volts/Hz Definite Time (#1 or #2)

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: None
TEST SETTINGS: Definite Time Pickup P % (100 to 200)
Time Delay D Cycles (30 to 8160)
Programmed Outputs Z Output (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: It would be efficient to disable the 24 Definite Time element with the lower pickup setting
first and test the higher setting operation, since the lower setting operation can be tested without
disabling the higher setting.

Test Setup:
1. Determine the Function 24 Voltz/Hz Definite Time settings to be tested.
2. Enter the Function 24 Voltz/Hz Definite Time settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. The Volts per Hertz pickup level at a percentage setting at Nominal Frequency (50 or 60 Hz) is:
Pickup voltage = (P% ÷ 100) x (Nominal Voltage) where the Nominal Values have been
programmed in the system setup data described in Section 2.1, Configuration and are recorded on
Figure A-3, Functional Configuration Record Form.

Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase the voltage on Phase A
until the 24 VOLTS/Hz LED illuminates, or the pickup indicator illuminates on the IPScom
Function Status screen. The voltage level of operation will equal to P volts ±1%.
2. Release the TARGET RESET pushbutton, then decrease the Phase A voltage. The assigned
OUTPUT LED(s) will extinguish.
3. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately (P + 10 volts) volts, and start timing. The contacts will close after D cycles
± 25 cycles.
3. Repeat Pickup Test and Time Test for Phase B and C.

6–9
M-3425A Instruction Book

24 Volts/Hz Inverse Time

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: None
TEST SETTINGS: Inverse Time Pickup P % (100 to 200)
Inverse Time Curve C (1 to 4)
Time Dial (Curve 1) K (1 to 100)
Time Dial (Curves 2-4) (0.0 to 9.0)
Reset Rate R Seconds (1 to 999)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. Determine the Function 24 Voltz/Hz Inverse Time settings to be tested.
2. Enter the Function 24 Voltz/Hz Inverse Time settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Enter a Function 24 Voltz/Hz Definite Time Pickup #1 setting of 200%, with a Delay of 1200
cycles.
4. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
5. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
6. The Volts/Hz pickup level of a percentage setting at nominal frequency (50 or 60 Hz) is: Pickup
voltage = (P% ÷ 100) x (Nominal Voltage) where the Nominal Values have been programmed in
the system setup data described in Section 2.1, Configuration and are recorded on Figure A-3,
Functional Configuration Record Form.
7. Test levels may be chosen at any percentages of Nominal Voltage which are a minimum of 5%
higher than the pickup percentage, P%. (Suggest 4 or 5 test levels chosen and calculated in
Step 6.)

Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase the voltage on Phase A
until the 24 VOLTS/Hz LED light illuminates, or the pickup indicator illuminates on the IPScom
Function Status screen. The voltage level of operation will equal P volts ±1%.
2. Release the TARGET RESET pushbutton, then decrease the Phase A voltage. The assigned
OUTPUT LED(s) will extinguish.
3. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply a voltage equal to the chosen test level calculated in Step 6 to Phase A and start timing.
The operating time will be as read from the appropriate Inverse Curve Family and K (Time Dial)
setting (refer to Appendix D, Inverse Time Curves). The measured time should be within the time
corresponding to 1% of the pickup value.

6–10
 Testing – 6

3. Press and hold the TARGET RESET pushbutton.

4. Reduce the applied voltage and start timing when the voltage drops below the pickup value, stop
timing when the TARGET LED extinguishes. The time should be the reset time within ±1 cycle or
±1%, whichever is greater.
5. Repeat Pickup Test and Time Test for all chosen test levels. The curve portion extending to lower
than P% V/Hz values are inactive and can be ignored. The tested points verify the operating
times of the function.
■ NOTE: If retesting is required, remove power from the unit or wait for the programmed reset time
period before the next test to assure resetting of the timer.

6–11
M-3425A Instruction Book

25D Dead Check

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: None
TEST SETTINGS: Dead V1 See Below
Dead VX See Below
Dead V1 & VX See Below
Dead Input Enable DIN Input (1 to 6)
Expanded I/O (7 to 14)
Dead Time Delay DD Cycles (1 to 8160)
Dead Voltage Limit DVL Volts (0 to 60)
Programmed Outputs Z Output (1 to 8)
Expanded I/O (9 to 23)
Test Setup:
1. Determine the Function 25D Dead Check settings to be tested.
2. Enter the Function 25D Dead Check settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. The 25D function requires positive sequence voltage and VX for testing. The following tests will
reference the positive sequence voltage as V1.
5. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
6. Set V1 and VX to the Nominal Voltage.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.

Dead V1 Hot VX Test:

1. Enable Dead V1 Hot VX and disable Dead VX Hot V1 (if enabled) utilizing either the HMI or IPScom
Communications Software..
2. Set V1 to DVL +5 V.
3. Press and hold the TARGET RESET pushbutton, then slowly decrease the voltage applied to V1
until Output Z LED illuminates, or the pickup indicator illuminates on the IPScom Function Status
screen. The voltage level should be equal to DVL 0.5 V or 0.5 %.
4. Release the TARGET RESET pushbutton, then increase the voltage applied to V1. The OUTPUT
LED will extinguish.
5. Set V1 to the Nominal Voltage.
6. Decrease VX to less than DVL, verify that the function does not operate.

6–12
 Testing – 6

Dead VX Hot V1 Test:

1. Enable Dead VX Hot V1 and disable Dead V1 Hot VX (if enabled) utilizing either the HMI or IPScom
Communications Software.
2. Set V1 to the Nominal Voltage.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.
3. Set VX to DVL +5 V.
4. Press and hold the TARGET RESET pushbutton, then slowly decrease the voltage applied to VX
until Output Z LED illuminates, or the pickup indicator illuminates on the IPScom Function Status
screen. The voltage level should be equal to DVL 0.5 V or 0.5 %.
5. Release the TARGET RESET pushbutton, then increase the voltage applied to VX. The OUTPUT
LED will extinguish.
6. Set VX to the Nominal Voltage.
7. Decrease V1 to less than DVL, verify that the function does not operate.

Dead V1 Dead VX Test:

1. Enable Dead V1 Dead VX utilizing either the HMI or IPScom Communications Software.
2. Disable Dead VX Hot V1 and Dead V1 Hot VX (if enabled).
3. Set V1 and VX to DVL +5 V.
4. Press and hold the TARGET RESET pushbutton, then slowly decrease the voltage applied to V1
and VX until Output Z LED illuminates, or the pickup indicator illuminates on the IPScom Function
Status screen. The voltage level should be equal to DVL 0.5 V or 0.5 %.
5. Release the TARGET RESET pushbutton, then increase the voltage applied to V1 and VX. The
OUTPUT LED will extinguish.
6. Set V1 to Nominal Voltage.
7. Decrease VX to less than DVL, then verify that the function does not operate.
8. Set VX to Nominal Voltage.
9. Decrease V1 to less than DVL, then verify that the function does not operate.

Dead Input Enable Test:

1. Select one of the Dead Inputs (DIN) and activate it.
2. Repeat the Dead VX Hot V1 Test and Dead V1 Hot VX Test, verify that the function operates as in
Dead VX Hot V1 Test and Dead V1 Hot VX Testing.
3. Deactivate the DIN and repeat the Dead VX Hot V1 Test and Dead V1 Hot VX Test once more.
Verify that the function does not operate.
4. Disable Dead Input feature.

Dead Timer Test:

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Enable Dead V1 Dead VX , utilizing either the HMI or IPScom Communications Software.
3. Set V1 and VX to DVL +5 V.
4. Remove V1 and VX and start timing. The contacts will close within –1 to +3 cycles or 1%.

6–13
M-3425A Instruction Book

25S Sync Check

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: None
TEST SETTINGS: Phase Angle Window PA Degrees (0 to 90)
Voltage Limits
Upper Limit UL Volts (60 to 140)
Lower Limit LL Volts (40 to 120)
Sync Check Time Delay SD Cycles (1 to 8160)
Delta Voltage Limit DV Volts (1.0 to 50.0)
Delta Frequency Limit DF Hz (0.001 to 0.500)
Phase Select (AB, BC, CA)
Programmed Outputs Z Output (1 to 8)
Expanded I/O (9 to 23)
Test Setup:
1. Determine the Function 25S Sync Check settings to be tested.
2. Enter the Function 25S Sync Check settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. The 25 function requires only one phase voltage and VX for testing in the Line-to-Ground
configuration. The phase voltage used for reference may be selected through the System Setup
menu. The following tests will reference the phase voltage as V1, although any phase may be
used for testing. Line-to-Line testing will follow the same procedures, with V1 representing the
proper Line-to-Line phase input. Each test below can be performed using any of the three phases
as a reference.
5. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
6. Set V1 and VX to the Nominal Voltage.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.

Phase Angle Limit Test:

1. Establish a phase angle difference of more than PA +5°.
2. Press and hold the TARGET RESET pushbutton, then slowly decrease the phase angle
difference until Output Z LED illuminates, or the pickup indicator illuminates on the IPScom®
Function Status screen. The phase angle difference should be equal to PA ±1°.
3. Release the TARGET RESET pushbutton, then increase the phase angle difference. The
OUTPUT LED will extinguish.

6–14
 Testing – 6

Upper Voltage Limit Test:

1. Apply a voltage 5 V greater than UL to V1.
2. Ensure VX voltage is less than UL but greater than LL. Slowly decrease the voltage applied to V1
until Output Z LED illuminates, or the pickup indicator illuminates on the IPScom Function Status
screen. The voltage should be equal to UL 0.5 V or ±0.5 %.
3. Increase the voltage applied to V1. The OUTPUT LED will extinguish. If desired, repeat this test
using VX.

Lower Voltage Limit Test:

1. Apply a voltage 5 V less than LL to V1.
2. Ensure VX voltage is greater than LL but less than UL. Slowly increase the voltage applied to V1
until Output Z LED illuminates, or the pickup indicator illuminates on the IPScom Function Status
screen. The voltage level should be equal to LL ±0.5 V or ±0.5 %.
3. Decrease the voltage applied to V1. The OUTPUT LED will extinguish. If desired, repeat this test
using VX.

Sync Check Time Delay Test:

1. Set V1 and VX to the Nominal Voltage. The Nominal Voltage value previously input to the relay
is described in Section 2.1 and should be recorded on Figure A-3, Functional Configuration Record
Form.
2. Establish a phase angle difference of more than PA +5°.
3. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.

4. Remove the phase angle difference and start timing. The contacts will close after SD cycles
within –1 to +3 cycles or 1 %.

Delta Voltage Test:

1. Set the Upper and Lower Voltage limits to their maximum and minimum values, respectively.
2. Set VX to 140 V and V1 to 40 V.
3. Press and hold the TARGET RESET pushbutton, then slowly increase the voltage applied to V1
until Output Z LED illuminates, or the pickup indicator illuminates on the IPScom Function Status
screen. The voltage difference should be equal to DV 0.5 V.
4. Release the TARGET RESET pushbutton, then decrease the voltage applied to V1. The OUTPUT
LED will extinguish. If desired, repeat the test using VX with V1 at 140 volts.

Delta Frequency Test:

1. Set V1 and VX to the Nominal Voltage. The Nominal Voltage value previously input to the relay
is described in Section 2.1 and should be recorded on Figure A-3, Functional Configuration Record
Form.
2. Set the frequency of V1 to 0.05 less than Nominal Frequency –DF.
3. Press and hold the TARGET RESET pushbutton, then slowly increase the frequency of V1 until
Output Z LED illuminates, or the pickup indicator illuminates on the IPScom® Function Status
screen. The frequency difference value should be equal to DF 0.0007 Hz or 5 %.
4. Release the TARGET RESET pushbutton, then decrease the frequency of V1. The OUTPUT LED
will extinguish. If desired, repeat the test using VX with V1 at Nominal Frequency.

6–15
M-3425A Instruction Book

27 Phase Undervoltage, 3 Phase (#1, #2, #3)

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: None
TEST SETTINGS: Pickup P Volts (5 to 180)
Time Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: If 27 #1 and 27 #2 have different pickup settings, it would be efficient to disable the one with the
higher setting first and test the lower setting operation. The higher setting operation could then be
tested without disabling the lower setting.
Test Setup:
1. Determine the Function 27 Phase Undervoltage settings to be tested.
2. Enter the Function 27 Phase Undervoltage settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.

Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly decrease the Phase A input voltage
until the 27 PHASE UNDERVOLTAGE LED illuminates, or the pickup indicator illuminates on the
IPScom Function Status screen.
The voltage level should be equal to P volts ±0.5 V or ± 0.5%. When both RMS and Line-Ground
to Line-Line is selected, the accuracy is 0.8V or 0.75%.
2. Release the TARGET RESET pushbutton, then increase the Phase A input voltage to the nominal
voltage, the OUTPUT LEDs will extinguish.
3. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately (P – 1) volts and start timing.
The contacts will close after D cycles ± 20 cycles or 1%(RMS), or 1 cycle or 0.5% (DFT),
whichever is greater.
3. Repeat Pickup Test and Time Test for Phase B and C.

6–16
 Testing – 6

27TN Third-Harmonic Undervoltage, Neutral (#1 or #2)

VOLTAGE INPUTS: Configuration V2

CURRENT INPUTS: See Below
TEST SETTINGS: Pickup P Volts (0.10 to 14.0)
Positive Sequence Volt Block PSV Volts (5 to 180)
Forward Power Block FP PU (0.01 to 1.00)
Reverse Power Block RP PU (–1.00 to –0.01)
Lead VAR Block –VAR PU (–1.00 to –0.01)
Lag VAR Block +VAR PU (0.01 to 1.00)
Lead Power Factor Block PFLead PU (0.01 to 1.00)
Lag Power Factor Block PFLag PU (0.01 to 1.00)
High Band Forward Power Block HFP PU (0.01 to 1.00)
Low Band Forward Power Block LFP PU (0.01 to 1.00)
Time Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT ( 1 to 8)
Expanded I/O (9 to 23)

■ NOTE: If 27TN #1 and 27 #2 have different pickup settings, it would be efficient to disable the one
with the higher setting first and test the lower setting operation. The higher setting operation could
then be tested without disabling the lower setting.

Test Setup:
1. Determine the Function 27TN Third-Harmonic Undervoltage, Neutral settings to be tested.
2. Enter the Function 27TN Third-Harmonic Undervoltage, Neutral settings to be tested utilizing
either the HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-2, Voltage Inputs: Configuration V2.

Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly decrease the neutral voltage input
until the 27TN/59D 100% STATOR GND LED illuminates, or the pickup indicator illuminates on
the IPScom Function Status screen. The voltage level should be equal to P volts ±0.1 V or ±1%.
2. Release the TARGET RESET pushbutton, then increase the neutral voltage to nominal voltage.
The OUTPUT LED(s) will extinguish.
3. Press TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately (P – 1) volts and start timing. The contacts will close after D cycles within
1 cycle or 1%.

6–17
M-3425A Instruction Book

Positive Sequence Voltage Block Test:

1. Decrease the neutral voltage input to less than P volts.
2. Apply a three phase voltage input greater than PSV volts.
The 27TN/59D 100% STATOR GND LED will illuminate, then the OUTPUT LED will illuminate
when the delay setting has timed out.
3. Enable the Positive Sequence Voltage Block utilizing either the HMI or IPScom® Communications
Software.
4. Decrease the applied three phase voltage until the OUTPUT LED(s) extinguishes.
The voltage level should be equal to PSV volts ±0.5 V or ±0.5%.
5. Disable the Positive Sequence Voltage Block utilizing either the HMI or IPScom Communications
Software.

Forward/Reverse Power Block Test:

1. Apply a three phase nominal voltage input.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.
2. Apply a nominal current input consistent with Figure 6-3, Current Inputs: Configuration C1.
The Nominal Current value is described in Section 2.1, Configuration and should be recorded on
Figure A-3, Functional Configuration Record Form.
■ NOTE: The POWER Real p.u. value can be obtained utilizing either the HMI (Status/
Power Status) or IPScom® Communications Software (Relay/Monitor/Secondary Status).

3. Adjust three phase voltage and current inputs to obtain a Power Real p.u. value greater than FP.
4. Enable the Forward Power Block utilizing either the HMI or IPScom Communications Software.
5. Decrease the applied three phase current until the OUTPUT LED(s) extinguishes.
The Power Real p.u. value should be equal to FP ±0.01 PU or ±2%.
6. Utilizing either the HMI or IPScom Communications Software disable the Forward Power Block
and then enable the Reverse Power Block.
7. Adjust three phase voltage and current inputs to obtain a Power Real p.u. value greater than RP.
8. Decrease the applied three phase current until the OUTPUT LED(s) extinguishes.
The Power Real p.u. value should be equal to RP ±0.01 PU or ±2%.
9. Enable the Reverse Power Block utilizing either the HMI or IPScom Communications Software.

Lead/Lag VAr Block Test:

1. Apply a three phase nominal voltage input.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.
2. Apply a nominal current input consistent with Figure 6-3, Current Inputs: Configuration C1.
The Nominal Current value is described in Section 2.1, Configuration and should be recorded on
Figure A-3, Functional Configuration Record Form.

6–18
 Testing – 6

■ NOTE: The POWER Reactive var value can be obtained utilizing either the HMI (Status/
Power Status) or IPScom® Communications Software (Relay/Monitor/Secondary Status).

3. Adjust three phase voltage and current inputs to obtain a Power Reactive var value greater than
–VAR.
The 27TN/59D 100% STATOR GND LED will illuminate, then the OUTPUT LED will illuminate
when the delay setting has timed out.
4. Enable the Lead VAR Block utilizing either the HMI or IPScom® Communications Software.
5. Adjust the applied three phase current phase angles until the OUTPUT LED(s) extinguishes.
The Power Reactive var value should be equal to –VAR ±0.01 PU or ±2%.
6. Utilizing either the HMI or IPScom® Communications Software disable the Lead VAR Block and
then enable the Lag VAR Block.
7. Adjust three phase voltage and current inputs to obtain a Power Reactive var value greater than
+VAR.
8. Adjust the applied three phase current phase angles until the OUTPUT LED(s) extinguishes.
The Power Reactive var value should be equal to +VAR ±0.01 PU or ±2%.
9. Disable the Lag VAR Block utilizing either the HMI or IPScom Communications Software.

Lead/Lag Power Factor Block Test:

1. Apply a three phase nominal voltage input.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.
2. Apply a nominal current input consistent with Figure 6-3, Current Inputs: Configuration C1.
The Nominal Current value is described in Section 2.1, Configuration and should be recorded on
Figure A-3, Functional Configuration Record Form.
3. Adjust three phase voltages and currents to obtain a Lead Power Factor Block value greater than
PFLead.
The 27TN/59D 100% STATOR GND LED will illuminate, then the OUTPUT LED will illuminate
when the delay setting has timed out.
4. Enable the Power Factor Lead Block utilizing either the HMI or IPScom Communications
Software.
5. Adjust three phase voltage phase angles until the OUTPUT LED(s) extinguishes.
The Power Factor Lead Block value should be equal to PFLead ± 0.03 or ± 3%.
6. Disable the Power Factor Lead Block.
7. Enable the Power Factor Lag Block.
8. Adjust three phase voltages and currents to obtain a Lag Power Factor Block value greater than
PFLag.
The 27TN/59D 100% STATOR GND LED will illuminate, then the OUTPUT LED will illuminate
when the delay setting has timed out.
9. Enable the Power Factor Lag Block utilizing either the HMI or IPScom Communications Software.
10. Adjust three phase voltage phase angles until the OUTPUT LED(s) extinguishes.
The Power Factor Lag Block value should be equal to PFLag ± 0.03 PU or ± 3%.
11. Disable the Power Factor Lag Block.

6–19
M-3425A Instruction Book

Forward Power Block (Band) Test:

1. Apply a three phase nominal voltage input.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.
2. Apply a nominal current input consistent with Figure 6-3, Current Inputs: Configuration C1.
The Nominal Current value is described in Section 2.1, Configuration and should be recorded on
Figure A-3, Functional Configuration Record Form.
3. Enable the High/Low Band Forward Power Block utilizing either the HMI or IPScom Communications
Software.
4. Adjust three phase voltages and currents to obtain a High/Low Forward Power Block value either
greater than the Low Band Forward Power Block LFP, or less than the High Band Forward Power
Block HFP
The 27TN/59D 100% STATOR GND LED will illuminate, then the OUTPUT LED will illuminate
when the delay setting has timed out.
5. Adjust the three phase current until the OUTPUT LED(s) extinguishes.
The Power Real p.u. value should be within the High Band and Low Band setpoint band ±0.1 PU
or ±2%.
6. Disable the High/Low Band Forward Power Block.

6–20
 Testing – 6

32 Directional Power, 3 Phase (#1, #2, #3)

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: Configuration C1
TEST SETTINGS: Pickup P PU (–3.000 to +3.000)
Time Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)
VT Configuration Line-Ground
Power Sensing (Over/Under)
#3 Directional Power Sensing (Real/Reactive)

■ NOTE: It would be efficient to disable the element with the lower pickup setting first and test the
higher setting operation, since the lower setting operation can be tested without disabling the higher
setting.

Test Setup:
1. Determine the Function 32 Directional Power settings to be tested.
2. Enter the Function 32 Directional Power settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1.
6. The level of current at which operation is to be expected for an individual power setting is given by
multiplying the PU pickup value (P above) by the Nominal Current value previously input to the
relay. The Nominal Current value is described in Section 2.1, Configuration and should be
recorded on Figure A-3, Functional Configuration Record Form.
7. Set the three phase voltages to the Nominal Voltage. The Nominal Voltage value previously
input to the relay is described in Section 2.1 and should be recorded on Figure A-3, Functional
Configuration Record Form.

Pickup Test, Positive/Forward Over Power Flow:

1. Press and hold the TARGET RESET pushbutton, then slowly increase the three phase currents
until the 32 DIRECTIONAL POWER LED illuminates, or the pickup indicator illuminates on the
IPScom Function Status screen.
The level of operation will be equal to that calculated in Step 6, ±2% or ±0.002 PU, whichever is
greater.
2. Release the TARGET RESET pushbutton.
3. Decrease the currents. The OUTPUT LED(s) will extinguish.
4. Press TARGET RESET pushbutton to reset targets.

6–21
M-3425A Instruction Book

Pickup Test, Negative/Reverse Over Power Flow:

1. Set the phase currents at 180 degrees from the respective phase voltages.
2. Press and hold the TARGET RESET pushbutton, then slowly increase the three phase currents
until the 32 DIRECTIONAL POWER LED illuminates, or the pickup indicator illuminates on the
IPScom® Function Status screen. The level of operation will be equal to that calculated in Step 6,
±2% or ±0.002 PU, whichever is greater.
3. Release the TARGET RESET pushbutton.
4. Decrease the three phase currents. The OUTPUT LED(s) will extinguish.
5. Press the TARGET RESET pushbutton to reset targets.

Pickup Test, Positive Forward Under Power Flow:

1. Set the phase currents in phase with the respective phase voltages.
2. Select Underpower sensing utilizing either the HMI or IPScom Communications Software.
3. Press and hold the TARGET RESET pushbutton, then slowly decrease the three phase currents
until the 32 DIRECTIONAL POWER LED illuminates, or the pickup indicator illuminates on the
IPScom Function Status screen. The level of operation will be equal to that calculated in Step 6,
±2% or ±0.002 PU, whichever is greater.
4. Release the TARGET RESET pushbutton.
4. Increase the three phase currents. The OUTPUT LED(s) will extinguish.
5. Press the TARGET RESET pushbutton to reset targets.

Pickup Test, Negative/Reverse Under Power Flow:

1. Set the phase currents at 180 degrees from the respective phase voltages.
2. Press and hold the TARGET RESET pushbutton, then slowly decrease the three phase currents
until the 32 DIRECTIONAL POWER LED illuminates, or the pickup indicator illuminates on the
IPScom Function Status screen. The level of operation will be equal to that calculated in Step 6,
±2% or ±0.002 PU, whichever is greater.
3. Release the TARGET RESET pushbutton.
4. Increase the three phase currents. The OUTPUT LED(s) will extinguish.
5. Press the TARGET RESET pushbutton to reset targets.

Pickup Test, Reactive Over Power (Element #3 Only):

1. Set the Three phase voltages, current magnitudes and phase angles to less than the Reactive
p.u. pickup level.
2. Press and hold the TARGET RESET pushbutton, then slowly swing current angles until the 32
DIRECTIONAL POWER LED illuminates, or the pickup indicator illuminates on the IPScom
Function Status screen. The level of operation will be equal to the Reactive Pickup ±2% or
±0.002 PU, whichever is greater.
3. Release the TARGET RESET pushbutton.
4. Adjust phase angles until the OUTPUT LED(s) extinguish.
5. Press the TARGET RESET pushbutton to reset targets.

6–22
 Testing – 6

Pickup Test, Reactive Under Power (Element #3 Only):

1. Set the Three phase voltages, current magnitudes and phase angles to greater than the Reactive
p.u. pickup level.
2. Press and hold the TARGET RESET pushbutton, then slowly swing current angles until the 32
DIRECTIONAL POWER LED illuminates, or the pickup indicator illuminates on the IPScom®
Function Status screen. The level of operation will be equal to the Reactive Pickup ±2% or
±0.002 PU, whichever is greater.
3. Release the TARGET RESET pushbutton.
4. Adjust phase angles until the OUTPUT LED(s) extinguish.
5. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately 110% of the pickup current and start timing. The contacts will close after D
cycles within +16 cycles or ±1%.

6–23
M-3425A Instruction Book

40 Loss of Field (#1 or #2, VC #1 or #2)

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: Configuration C1
TEST SETTINGS: Circle Diameter P Ohms (0.1 to 100)
1 Amp CT Rating (0.5 to 500)
Offset O Ohms (–50 to 50)
1 Amp CT Rating (–250 to 250)
Time Delay D Cycles (1 to 8160)
Voltage Control V Volts (5 to 180)
Delay with VC Cycles (1 to 8160)
Directional Element E Degrees (0 to 20)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)
VT Configuration Line-Ground

■ NOTE: It would be efficient to disable the function with the higher “reach” (diameter minus offset)
setting first (lower current) and test the lower “reach” setting operation. Since the higher setting
operation can be tested without disabling the lower setting, the 40 functions will be enabled when
the tests are complete.

Test Setup:
1. Determine the Function 40 Loss of Field settings to be tested.
2. Enter the Function 40 Loss of Field settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1.
■ NOTE: For proper testing, use I ≤ 3 x CT rating.

6. The level of current at which operation is to be expected for an individual setting is as follows:
a. Define “reach” as R ohms = (P - O ohms) where O is usually negative.
b. Define “trip current” as I = (Selected Voltage ÷ R ohms). The voltage level may be selected
based on the desired test current level.
c. Define “offset current” as IO = (Selected Voltage ÷ O ohms).
7. Set the three-phase voltages VA, VB, and VC to the Selected Voltage value from Step 6, and
set the phase angle between the voltage and current inputs to 90° (current leading voltage).

Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase the three-phase currents
until the 40 LOSS OF FIELD LED illuminates, or the pickup indicator illuminates on the IPScom
Function Status screen. The level will be equal to “I” calculated in Step 6 with the resulting
impedance within 0.1 ohms or 5%.

6–24
 Testing – 6

2. If the offset setting is negative, continue to increase the three-phase currents until the 40 LOSS
OF FIELD LED light extinguishes, or the pickup indicator extinguishes on the IPScom® Function
Status screen. The level will be equal to “IO” calculated in Step 6 with the resulting offset
impedance within ±0.1 ohms or ±5%.
3. Release the TARGET RESET pushbutton.
4. Decrease the three-phase currents. The OUTPUT LED(s) will extinguish.
5. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Set the three-phase voltages VA, VB, and VC to the Selected Voltage value from Step 6, and set
the phase angle between the voltage and current inputs to 90° (current leading voltage).
3. Apply I + 10% Amps and start timing. Contacts will close after D cycles K1 cycle or K1%.

Time Test With Voltage Control:

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Enable the Voltage Control setting utilizing either the HMI or IPScom Communications Software.
3. Set the three-phase voltages VA, VB, and VC to a voltage where the positive sequence voltage is
less than the Voltage Control setting.
4. Set phase currents and phase angles to establish the impedance value within the mho pickup and
start timing. Contacts will close after D cycles 1 cycle or 1%.

6–25
M-3425A Instruction Book

46 Negative Sequence Overcurrent Definite Time

VOLTAGE INPUTS: None

CURRENT INPUTS: Configuration C1 (MODIFIED)
TEST SETTINGS: Pickup Def Time P % (3 to 100)
Time Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: Although no voltage input is required for the testing of the 46 function, it is suggested that
Nominal Voltage be applied to restrain the functions which use both voltage and current inputs for
operation.

Test Setup:
1. Determine the Function 46 Negative Sequence Overcurrent Definite Time settings to be tested.
2. Enter the Function 46 Negative Sequence Overcurrent Definite Time settings to be tested utilizing
either the HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1 (Modified).
Modify Configuration C1 by exchanging Current Input 2 and 3 (Phase B current = Input 3 and
Phase C current = Input 2).
■ NOTE: For proper testing, use I ≤ 3 x CT rating.

5. The level of current at which operation is to be expected for an individual setting is given by;
Pickup current = (P% ÷ 100) x Nominal Current previously input to the relay. The Nominal
Current value is described in Section 2.1, Configuration and should be recorded on Figure A-3,
Functional Configuration Record Form.
Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase the three-phase currents
until the NEG SEQ OVERCURRENT 46 LED illuminates, or the pickup indicator illuminates on the
IPScom Function Status screen. The level will be equal to pickup current calculated in Step 5
±0.5% of 5 A.
2. Release the TARGET RESET pushbutton.
3. Decrease the three-phase currents. The OUTPUT LED(s) will extinguish.
4. Press TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply current of at least (1.1 x pickup) amps and start timing. The contacts will close after D
cycles within 1 cycle or 1%.

6–26
 Testing – 6

46 Negative Sequence Overcurrent Inverse Time

VOLTAGE INPUTS: None

CURRENT INPUTS: Configuration C1 (MODIFIED)
TEST SETTINGS: Pickup Inv Time P % (3 to 100)
Time Dial Setting K (1 to 95)
Maximum Trip Time D Cycles (600 to 65,500)
Reset Time R Seconds (1 to 600)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)
■ NOTE: Although no voltage input is required for the testing of the 46 function, it is suggested that
Nominal Volts be applied to restrain the functions which use both voltage and current inputs for
operation.

Test Setup:
1. Determine the Function 46 Negative Sequence Overcurrent Inverse Time settings to be tested.
2. Enter the Function 46 Negative Sequence Overcurrent Inverse Time settings to be tested utilizing
either the HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1 (Modified).
Modify Configuration C1 by exchanging Current Input 2 and 3 (Phase B current = Input 3 and
Phase C current = Input 2).
■ NOTE: For proper testing, use I ≤ 3 x CT rating.

5. The current pickup level at a percentage setting is: Pickup current = (P% ÷ 100) x Nominal
Current previously input to the relay.
a. Test levels may be chosen at any percentages of Nominal Current which are a minimum of
5% higher than the pickup percentage, P%. (Suggest 4 or 5 test levels chosen and calculated
in amps.)
b. The Nominal Current value is described in Section 2.1, Configuration and should be
recorded on Figure A-3, Functional Configuration Record Form.
Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply currents equal to the chosen test levels calculated in Step 5 and start timing. The operating
time will be as read from Figure 2-31, Negative Sequence Inverse Time Curves, negative
sequence current in % of Nominal Current and appropriate K (Time Dial) setting, or the maximum
trip time (whichever is faster).
■ NOTE: If retesting is required, power should be removed from the unit or wait R seconds before the next
test to assure resetting of the timer.

3. Repeat Step 2 for all test levels chosen.

Reset Time Test:
1. Press and hold the TARGET RESET pushbutton.
2. Reduce the applied voltage and start timing when the voltage decreases to less than the pickup
value, stop timing when the TARGET LED extinguishes, or the pickup indicator extinguishes on
the IPScom Function Status screen. The time should be approximately equal to the reset time
setting R.
■ NOTE: If retesting is required, power should be removed from the unit or wait for the reset time before the
next test to assure resetting of the timer.

6–27
M-3425A Instruction Book

49 Stator Overload Protection (#1, #2)

VOLTAGE INPUTS: None

CURRENT INPUTS: Configuration C1
TEST SETTINGS: Time Constant τ Minutes (1.0 to 999.9)
Max Overload Current Imax Amps (1 to 10)
1 Amp CT Rating (.2 to 2)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)
Test Setup:
1. Determine the Function 49 Stator Overload settings to be tested. This test requires that the
values for the following elements (described in detail in Chapter 2, Application) be determined:
• τ = time constant
• I0 = pre-load current
• Imax = maximum allowed continuous overload current

2. Enter the Function 49 Stator Overload settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1.
5. Calculate t (time to trip in minutes) for the desired test settings as follows:
Where:

t = t x In
( IL2 w IPL2
IL2 w Imax2 )
Where: t = time to trip in minutes
τ = time constant
IL= relay current (applied)
IPL = pre-load current
Imax = maximum allowed continuous overload current
Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase the current until the
STATOR OVERLOAD 49 LED illuminates or the pickup indicator illuminates on the IPScom
Function Status screen.
The current level of operation will be (Imax) Amps 0.1 A ( 0.02 Amp for 1 A CT) or 3%.
2. Release the TARGET RESET pushbutton, then decrease the current. The OUTPUT LED will
extinguish.
3. Press TARGET RESET button to remove targets.

6–28
 Testing – 6

Time Test (Cold Start):

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
■ NOTE: The 49 Stator Overload 49 #1 and 49 #2 current values can be obtained utilizing either the HMI
(Status/Current Status) or IPScom® Communications Software (Relay/Monitor/Secondary Status).

2. Determine the 49 Stator Overload 49 #1 and 49 #2 current values. If the either value is greater
than 0.00 A, then remove power from the relay and then reapply power to reset the current values.
3. Apply a three phase current (I) to the relay greater than (Imax) Amps and start timing.
The time to trip should be t minutes 5 %.

Time Test (Preload):

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
■ NOTE: The 49 Stator Overload 49 #1 and 49 #2 current values can be obtained utilizing either the HMI
(Status/Current Status) or IPScom Communications Software (Relay/Monitor/Secondary Status).

2. Determine the 49 Stator Overload 49 #1 and 49 #2 current values. If the either value is greater
than 0.00 A, then remove power from the relay and then reapply power to reset the current values.
3. Apply a three phase preload current to the relay equal to (IO) Amps and allow current readings to
stabilize.
4. Apply a three phase current (I) to the relay greater than (Imax) Amps and start timing.
The time to trip should be t minutes 5 %.

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M-3425A Instruction Book

50 Instantaneous Phase Overcurrent (#1, #2)

VOLTAGE INPUTS: None

CURRENT INPUTS: Configuration C1
TEST SETTINGS: Pickup P Amps (0.1 to 240.0)
1 Amp CT Rating (0.1 to 48.0)
Delay Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: Although no voltage input is required for the testing of the 50 function, it is suggested that Nominal
Volts be applied to restrain the functions which use both voltage and current inputs for operation.

Test Setup:
1. Determine the Function 50 Instantaneous Phase Overcurrent settings to be tested.
2. Enter the Function 50 Instantaneous Phase Overcurrent settings to be tested utilizing either the
HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1.

Pickup Test:
1 Press and hold the TARGET RESET pushbutton, then slowly increase Current Input 3 (Phase C)
until the PHASE OVERCURRENT 50 LED illuminates, or the pickup indicator illuminates on the
IPScom Function Status screen.
The current level of operation will be (P) amps ±0.1 amps or ±3%.
2. Release the TARGET RESET pushbutton.
3. Decrease the current input. The OUTPUT LED(s) will extinguish.
4. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately 110% of P amps and start timing. The operating time will be 1 cycle or 1%.
3. Reduce Current Input 3, to 0 amps.
4. Test may be repeated using Current Inputs 1 (Phase A) and 2 (Phase B) individually.

6–30
 Testing – 6

50BF/50BF-N Breaker Failure

VOLTAGE INPUTS: None

CURRENT INPUTS: Configuration C3
TEST SETTINGS: 50BF-Ph Pickup P Amps (0.10 to 10.00)
1 Amp CT Rating (0.02 to 2.00)
50BF-N Pickup N Amps (0.10 to 10.00)
1 Amp CT Rating (.02 to 2.00)
Time Delay D Cycles (1 to 8160)
Breaker Failure Initiate B OUT (1 to 8)
Input Initiate I IN (1 to 6)
Expanded I/O (7 to 14)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
2. Connect test current inputs as shown in Figure 6-5, Current Inputs: Configuration C3. Current
Input #2 only.

Test Setup for 50BF-Ph Generator Breaker Failure Operation:

1. Determine the Function 50BF-Ph Generator Breaker Failure settings to be tested.
2. Utilizing either the HMI or IPScom® Communications Software enter the following settings:
a. Enable the 50BF-Phase Element and disable the 50BF-Neutral Element
b. 50BF-Ph Pickup Setting > P amps, Time delay setting = D cycles.

Testing 50BF-Ph Generator Breaker Failure Operation:

1. Externally short any ONE set of contacts (I) IN shown above.
2. Short IN1 (connect contacts 10 & 11) to simulate 52b contact closure (breaker open). Alternatively,
the external contact may be operated if all connections are made.
3. Press and hold the TARGET RESET pushbutton, then slowly increase Current Input 3 until the
50BF BREAKER FAILURE LED illuminates, or the pickup indicator illuminates on the IPScom
Function Status screen.
The current level of operation will be (P) amps ±0.1 amps or ±2%.
4. Release the TARGET RESET pushbutton.
5. Decrease the current input. The OUTPUT LED(s) extinguish.
6. Press the TARGET RESET pushbutton to reset targets.

Time Test 50BF-Ph Generator Breaker Failure Operation:

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately 110% of P amps and start timing. The operating time will be D cycles within
1 cycle or 1%.
3. Reduce Current Input 3, to 0 amps.

6–31
M-3425A Instruction Book

Test Setup for 50BF-N Generator Breaker Failure Operation:

1. Determine the Function 50BF-Ph Generator Breaker Failure settings to be tested.
2. Utilizing either the HMI or IPScom® Communications Software enter the following settings:
a. Enable the 50BF-Neutral Element and the 50BF-Phase Element
b. 50BF-N Pickup Setting > N amps, 50BF-Ph Pickup Setting < P amps, Time delay setting =
D cycles.

Testing 50BF-N Generator Breaker Failure Operation:,

1. Short IN1 (connect contacts 10 & 11) to simulate 52b contact closure (breaker open).
3. Press and hold the TARGET RESET pushbutton, then slowly increase Current Input 3 until the
50BF BREAKER FAILURE LED illuminates, or the pickup indicator illuminates on the IPScom
Function Status screen.
The current level of operation will be (N) amps ±0.1 amps or ±2%.
4. Release the TARGET RESET pushbutton.
5. Decrease the current input. The OUTPUT LED(s) extinguish.
6. Press the TARGET RESET pushbutton to reset targets.

Time Test 50BF-N Generator Breaker Failure Operation:

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately 110% of N amps and start timing. The operating time will be D cycles within
1 cycle or 1%.
3. Reduce Current Input 3, to 0 amps.

Test Setup for HV Breaker Failure Operation:

1. Utilizing either the HMI or IPScom Communications Software enter the following settings:
a. Disable the 50BF-Neutral Element and 50BF-Phase Element.
b. Select 1 input initiate from #2 to #6, utilizing either the HMI or IPScom Communications
Software.
c. Time delay setting = D cycles
d. Input 1 IN breaker closed state.

Testing HV Breaker Failure Operation:

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Initiate operation by externally shorting any ONE set of contacts (I) IN except Input 1 above.
Remove short from Input (1) IN. The operating time will be D cycles within 1 cycle or 1%.

6–32
 Testing – 6

50/27 Inadvertent Energizing

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: Configuration C1
TEST SETTINGS: 50 Pickup P Amps (0.50 to 15.00)
1 Amp CT Rating (.01 to 3.00)
27 Pickup V Volts (5 to 130)
Pickup Delay D Cycles (1 to 8160)
Dropout Delay T Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)
Test Setup:
1. Determine the Function 50/27 Inadvertent Energizing settings to be tested.
2. Enter the Function 50/27 Inadvertent Energizing settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1.

50 Overcurrent Test and 27 Undervoltage Test:

1. Set Voltage inputs to zero volts, then verify the Pickup Time Delay times out after a minimum of
D cycles.
2. Press and hold the TARGET RESET pushbutton, then slowly increase the Phase A current (Input
1) until the 50/27 INADVERTENT ENRGNG LED illuminates, or the pickup indicator illuminates
on the IPScom Function Status screen.
The level of operation will be (P) amps ±0.1 A or ±2%.
3. If desired, set the dropout time delay (T) to minimum setting.
4. Press and hold the TARGET RESET pushbutton, then slowly increase the voltage input in stages
(waiting at least T cycles between each voltage change) until the 50/27 INADVERTENT ENRGNG
LED extinguishes, or the pickup indicator extinguishes on the IPScom Function Status screen..
The level of operation will be V volts ±0.5 Volts.

27 Pickup Delay and Dropout Delay Test:

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Reduce voltage to 0 volts and start timing. The operating time to close will be D cycles within 1
cycle or 1%.
3. Increase current by one (1) amp.
4. Input approximately 110% of V volts (pickup setting) and start timing. The operating time to open
will be T cycles within 1 cycle or 1%.

6–33
M-3425A Instruction Book

50DT Definite Time Overcurrent (for split-phase differential), #1 or #2

VOLTAGE INPUTS: None

CURRENT INPUTS: Configuration C2
TEST SETTINGS: Pickup A Phase A Amps (0.20 to 240.00)
1 Amp CT Rating (0.04 to 48.00)
Pickup B Phase B Amps (0.20 to 240.00)
1 Amp CT Rating (0.04 to 48.00)
Pickup C Phase C Amps (0.20 to 240.00)
1 Amp CT Rating (0.04 to 48.00)
Delay Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: Although no voltage input is required for the testing of the 50DT function, it is suggested that
Nominal Volts be applied to restrain the functions which use both voltage and current inputs for
operation. If other functions operate during these tests they will need to also be disabled for the
test and enabled after the tests are complete.
Test Setup:
1. Determine the Function 50DT Definite Time Overcurrent settings to be tested.
2. Enter the Function 50DT Definite Time Overcurrent settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable the functions listed above. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test current inputs as shown in Figure 6-4, Current Inputs: Configuration C2.
5. Set the three-phase voltages VA, VB, and VC to the Nominal Voltage. The Nominal Voltage value
previously input to the relay is described in Section 2.1 and should be recorded on Figure A-3,
Functional Configuration Record Form.
Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase the Phase A Current Input
until the PHASE OVERCURRENT 50 LED illuminates, or the pickup indicator illuminates on the
IPScom Function Status screen.
The current level of operation will be (A) amps ±0.1 amps or ±3%.
2. Release the TARGET RESET pushbutton.
3. Decrease the Phase A Current Input. The OUTPUT LED(s) will extinguish.
4. Press the TARGET RESET pushbutton to reset targets.
Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately 110% of A amps and start timing. The operating time will be 1 cycle or
1%, whichever is greater.
3. Reduce Phase A Current Input to 0 amps.
4. Repeat Steps 2 and 3 for Phase B & C.
5. If testing is complete, enable any functions disabled for this test.

6–34
 Testing – 6

50N Instantaneous Neutral Overcurrent

VOLTAGE INPUTS: None

CURRENT INPUTS: As described
TEST SETTINGS: Pickup P Amps (0.1 to 240.0)
1 Amp CT Rating (0.1 to 48.0)
Time Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: Although no voltage input is required for the testing of the 50N function, it is suggested that
Nominal Volts be applied to restrain the functions which use both voltage and current inputs for
operation.

Test Setup:
1. Determine the Function 50N Instantaneous Neutral Overcurrent settings to be tested.
2. Enter the Function 50N Instantaneous Neutral Overcurrent settings to be tested utilizing either the
HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase Current Input IN (terminals
53 and 52) until the NEUTRAL O/C 50N/51N LED illuminates, or the pickup indicator illuminates
on the IPScom Function Status screen.
The current level of operation will be (P) amps ±0.1 amps or ±3%.
2. Release the TARGET RESET pushbutton.
3. Decrease Current Input IN. The OUTPUT LED(s) will extinguish.
4. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply approximately 110% of P amps to Current Input IN (terminals 53 and 52) and start timing.
The operating time will be D cycles ±1 Cycle or ±1%.
3. Reduce Current Input IN to 0 amps.

6–35
M-3425A Instruction Book

51N Inverse Time Neutral Overcurrent

VOLTAGE INPUTS: None

CURRENT INPUTS: As described
TEST SETTINGS: Pickup P Amps (0.25 to 12.00)
1 Amp CT Rating (0.05 to 2.40)
BECO Time Curves
(definite time/inverse/very inverse/extremely inverse)
Time Dial Setting K (0.5 to 11.0)
1
IEC Inverse Time Curves:
(inverse/very inverse/extremely inverse/long time inverse)
IEE Curves
(moderately inverse/very inverse/extremely inverse)
Time Dial Setting K (0.05 to 1.10)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)
1
Either a standard curve or an IEC curve must be selected.

■ NOTE: Although no voltage input is required for the testing of the 51N function, it is suggested that
Nominal Volts be applied to restrain the functions which use both voltage and current inputs for
operation.

Test Setup:
1. Determine the Function 51N Inverse Time Neutral Overcurrent settings to be tested.
2. Enter the Function 51N Inverse Time Neutral Overcurrent settings to be tested utilizing either the
HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Refer to Appendix D, Figures D5–D12, or Tables D-1A and D-1B. Test levels may be chosen in
terms of multiples of pickup value and associated time in seconds. (Suggest 4 or 5 test levels
chosen and calculated in amps.)

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply current equal to the chosen test level calculated in Step 6 to Current Input IN (Terminals 53
and 52) and start timing.
Operating time will be within ±3 cycles or ±3% whichever is greater.
3. Repeat Steps 2 and 3 for all test levels chosen. The tested points verify the operating times of the
function.

6–36
 Testing – 6

51V Inverse Time Phase Overcurrent with Voltage Control/Restraint

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: Configuration C1
TEST SETTINGS: Pickup P Amps (0.50 to 12.00)
1 Amp CT Rating (0.10 to 2.40)
BECO Time Curves
(definite time/inverse/very inverse/extremely inverse)
Time Dial Setting K (0.5 to 11.0)
IEC Inverse Time Curves:1
(inverse/very inverse/extremely inverse/long time inverse)
IEE Curves
(moderately inverse/very inverse/extremely inverse)
Time Dial Setting K (0.05 to 1.10)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)
1
Either a standard curve or an IEC curve must be selected.

Test Setup:
1. Determine the Function 51V Inverse Time Phase Overcurrent settings to be tested.
2. Enter the Function 51V Inverse Time Phase Overcurrent settings to be tested utilizing either the
HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1
6. Test levels may be chosen at any ampere values which are a minimum of 50% higher than the
pickup amps, P Amps. It is suggested that the user select 4 or 5 test levels to verify curve.

Pickup Test:
1. If Voltage Control or Voltage Restraint is enabled, then disable 51V Voltage Control/Restraint
utilizing either the HMI or IPScom Communications Software.
2. Press and hold the TARGET RESET pushbutton, then slowly increase the Phase A Current
Input until the PHASE OVERCURRENT 51V LED illuminates, or the pickup indicator illuminates
on the IPScom Function Status screen.
The current level of operation will equal P Amps ±0.1A or ±1%.
3. Release the TARGET RESET pushbutton.
4. Reduce the Phase A Current Input to 0 amps. The assigned OUTPUT LED(s) will extinguish.
5. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. If Voltage Control or Voltage Restraint is enabled, then disable 51V Voltage Control/Restraint
utilizing either the HMI or IPScom Communications Software.

6–37
M-3425A Instruction Book

3. Apply current equal to the chosen test level calculated in Step 6 to Phase A Current Input and
start timing. The operating time will be as read from the appropriate Inverse Curve Family and K
(Time Dial) setting in Appendix D, Figures D-5 through D-8, or Tables D-1A through D-1B. The
accuracy specified is valid for currents above 1.5 times the pickup current.
4. Reduce Phase A Current Input to 0 amps. The OUTPUT LED(s) will extinguish.
5. Press the TARGET RESET pushbutton to reset targets.
6. Repeat Steps 3, 4 and 5 for all test levels chosen.

Voltage Control Test:

1. If Voltage Control is disabled, then enable 51V Voltage Control utilizing either the HMI or IPScom®
Communications Software.
2. Press and hold the TARGET RESET pushbutton, then slowly increase the Phase A (B,C) Current
Input until the PHASE OVERCURRENT 51V LED illuminates, or the pickup indicator illuminates
on the IPScom Function Status screen.
3. Release the TARGET RESET pushbutton.
4. When the assigned OUTPUT LED(s) illuminates, then increase the Phase A(B,C) Input Voltage
to at least 0.5 Volts greater than V Volts.
The assigned OUTPUT LED(s) will extinguish at V Volts ±0.5 V or ±0.5%.
5. Press the TARGET RESET pushbutton to reset targets.
6. Reduce Phase A (B,C) Current Input to 0 amps.
7. Decrease the Phase A (B,C) Input Voltage to Nominal Voltage.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.

Voltage Restraint Test:

1. If Voltage Restraint is disabled, then enable 51V Voltage Restraint utilizing either the HMI or
IPScom Communications Software.
2. Set P Amps equal to 2 Amps utilizing either the HMI or IPScom Communications Software.
3. Apply current equal to 1.5 Amps to the Phase Current Input.
4. Increase the Phase A (B,C) Input Voltage to 75% of Nominal Voltage. The Nominal Voltage
value previously input to the relay is described in Section 2.1 and should be recorded on Figure
A-3, Functional Configuration Record Form.
The PHASE OVERCURRENT 51V LED will illuminate, or the pickup indicator illuminates on the
IPScom Function Status screen.
5. Repeat Steps 2, 3 and 4 with reduced input voltage values and current reduced by the same
percentage as value (see Figure 2-44).

6–38
 Testing – 6

59 Phase Overvoltage, 3-Phase (#1, #2, #3)

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: None
TEST SETTINGS: Pickup P Volts (5 to 180)
Time Delay D Cycles (1 to 8160)
Input Voltage Select (Phase or Positive Sequence)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: If 59 #1 and 59 #2 have different pickup settings, it would be efficient to disable the one with the
lower setting first and test the higher setting operation. The lower setting operation could then be
tested without disabling the higher setting.
Test Setup:
1. Determine the Function 59 RMS Overvoltage settings to be tested.
2. Enter the Function 59 RMS Overvoltage settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. Set the three-phase voltages VA, VB, and VC to the Nominal Voltage.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.

Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase the Phase A Voltage Input
until the 59 PHASE OVERVOLTAGE LED illuminates, or the pickup indicator illuminates on the
IPScom Function Status screen.
The voltage level of operation should be equal to P Volts ±0.5 V or ±0.5%. When both RMS and
Line-Ground to Line-Line is selected, the accuracy is 0.8V or 0.75%
2. Release the TARGET RESET pushbutton.
3. Decrease the Phase A Voltage Input to Nominal Voltage. The OUTPUT LED(s) will extinguish.
4. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply (P+1) Volts to the Phase A (B,C) Voltage Input and start timing. The contacts will close
after D cycles 1 cycle or 1% (DFT) or within +20 cycles or 1% (RMS).
3. Reduce Phase A (B,C) Voltage Input to Nominal Voltage.
4. Repeat Steps 2 and 3 for Phase B & C.

6–39
M-3425A Instruction Book

59D Third-Harmonic Voltage Differential

VOLTAGE INPUTS: As described

CURRENT INPUTS: None
TEST SETTINGS: Ratio (0.1 to 5.0)
Time Delay D Cycles (1 to 8160)
Line Side Voltage LSV (VX or 3VO Calculated)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. Determine the Function 59D Third-Harmonic Voltage Differential settings to be tested.
2. Enter the Function 59D Third-Harmonic Voltage Differential settings to be tested utilizing either
the HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect a voltage input to VN at 180 Hz (150 Hz for 50 Hz unit) terminal numbers 44 and 45.

Pickup Test:
■ NOTE: If 3VO is being used, then use anyone of the phase voltages or all three at zero sequence.
1. Apply a voltage greater than VN to the selected line side voltage (VX or 3VO ) at 180 Hz (150 Hz for
50 Hz unit).
2. Press and hold the TARGET RESET pushbutton, then slowly increase Voltage Input VN until the
59D THIRD HARM VOLT DIFF LED illuminates, or the pickup indicator illuminates on the IPScom
Function Status screen.
2. Release the TARGET RESET pushbutton.
3. Decrease the Voltage Input (VX or 3V0) to less than the ratio pickup level. The OUTPUT LED(s) will
extinguish.
4. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply a voltage greater than the ratio pickup level and start timing. The contacts will close after D
cycles within 1 cycle or 1%.

6–40
 Testing – 6

59N Overvoltage, Neutral Circuit or Zero Sequence (#1, #2, #3)

VOLTAGE INPUTS: As described

CURRENT INPUTS: None
TEST SETTINGS: Pickup P Volts (5.0 to 180)
Time Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: If 59N #1 and 59N #2 have different pickup settings, it would be efficient to disable the one with
the lower setting first and test the higher setting operation. The lower setting operation could then
be tested without disabling the higher setting.
Test Setup:
1. Determine the Function 59N RMS Overvoltage settings to be tested.
2. Enter the Function 59N RMS Overvoltage settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect a voltage input to VN terminal numbers 44 and 45.

Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase Voltage Input VN until the
59N NEUT/GND OVERVOLT LED illuminates, or the pickup indicator illuminates on the IPScom
Function Status screen.
The voltage level of operation should be equal to P Volts ±0.5 V or ±0.5%.
2. Release the TARGET RESET pushbutton.
3. Decrease the Voltage Input VN to 0 volts. The OUTPUT LED(s) will extinguish.
4. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply (P+1) Volts and start timing. The contacts will close after D cycles within 1 cycle or
1%. When 64S is purchased, the time delay accuracy is –1 to +5 cycles.

6–41
M-3425A Instruction Book

59X Multi-purpose Overvoltage (#1 or #2)

VOLTAGE INPUTS: As described

CURRENT INPUTS: None
TEST SETTINGS: Pickup P Volts (5.0 to 180.0)
Time Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: If 59X #1 and 59X #2 have different pickup settings, it would be efficient to disable the one with
the lower setting first and test the higher setting operation. The lower setting operation could then
be tested without disabling the higher setting.
Test Setup:
1. Determine the Function 59X Overvoltage settings to be tested.
2. Enter the Function 59X Overvoltage settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect a voltage input to VX terminal numbers 64 and 65.

Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase Voltage Input VX until the
59N NEUT/GND OVERVOLT LED illuminates, or the pickup indicator illuminates on the IPScom
Function Status screen.
The voltage level of operation should be equal to P Volts ±0.5 V or ±0.5%.
2. Release the TARGET RESET pushbutton.
3. Decrease the Voltage Input VX to 0 volts. The OUTPUT LED(s) will extinguish.
4. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply (P+1) Volts and start timing. The contacts will close after D cycles within 1 cycle or
1%.

6–42
 Testing – 6

60FL VT Fuse Loss Detection

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: Configuration C1
TEST SETTINGS: Time Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: It is necessary for “FL” to be designated as an initiating input (see Section 2.3, Setpoints and
Time Settings) before this function can be tested.
■ NOTE: Refer to Figure 2-52, Fuse Loss (60FL) Function Logic, for single phase and three phase fuse
loss.
Test Setup:
1. Determine the Function 60FL VT Fuse Loss Detection settings to be tested.
2. Enter the Function 60FL VT Fuse Loss Detection settings to be tested utilizing either the HMI or
IPScom® Communications Software. (FL initiate must be selected for this test.)
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. Connect test current inputs as shown in Figure 6-3, Current Inputs: Configuration C1.
6. Set the three-phase voltages VA, VB, and VC to the Nominal Voltage. The Nominal Voltage value
previously input to the relay is described in Section 2.1 and should be recorded on Figure A-3,
Functional Configuration Record Form.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Disconnect the Phase A (B,C) Voltage Input and start timing. The 60FL V.T. FUSE LOSS LED
and Output Z LEDs will illuminate, or the pickup indicator illuminates on the IPScom Function
Status screen.
The operating time will be D cycles within 1 cycle or 1%.
3. Reconnect the Phase A (B,C) Voltage Input.
4. Press the TARGET RESET pushbutton to reset targets.
5. Repeat Steps 2, 3 and 4 for Phase B and C.

Time Test - Three Phase Fuse Loss:

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Enable Three Phase Fuse Loss Detection utilizing either the HMI or IPScom Communications
Software.
3. Apply current to Phase A 1.25% greater than Nominal Current.
4. Disconnect Phase A, B and C Voltage Inputs and start timing. The 60FL V.T. FUSE LOSS LED
and Output Z LEDs will illuminate, or the pickup indicator illuminates on the IPScom Function
Status screen. The operating time will be D cycles within 1 cycle or 1%.
5. Reconnect the Phase A, B and C Voltage Inputs.
6. Press the TARGET RESET pushbutton to reset targets.

6–43
M-3425A Instruction Book

64F Field Ground Protection (#1 or #2)

VOLTAGE INPUTS: None

CURRENT INPUTS: None
TEST SETTINGS: Pickup P kOhms (5 to 100)
Time Delay D Cycles (1 to 8160)
Injection Frequency IF Hz (0.10 to 1.00)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. Determine the Function 64F Field Ground Protection settings to be tested.
2. Enter the Function 64F Field Ground Protection settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect an M-3921 Field Ground Coupler and decade box as described in Figure 6-7, Field
Ground Coupler.
5. Set decade box resistance to 10% greater than pickup P kOhms.

Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly decrease the resistance on the
decade box until the FIELD GND/BRUSH LIFT 64F/B LED illuminates or the pickup indicator on
the IPScom Function Status screen illuminates.
The level of operation will be P kOhms ±1 kOhms or ±10%.
2. Release the TARGET RESET pushbutton.
3. Increase the resistance on the decade box. The OUTPUT LED(s) will extinguish.
4. Press the TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Set the resistance on the decade box to 90% of P and start timing. The operating time will be
after D cycles, within ±(2/IF + 1).

6–44
 Testing – 6

When the capacitance value and the operating

frequency have been determined, the actual
insulation resistance can be verified by installing a
variable resistor (5 to 100 KΩ) and a discrete
capacitor to the coupler module (M-3921).

8 WARNING: When auto-calibrating, the jumper

used to short pins 2 & 3 must be removed when
calibration is complete. Placing the M-3921 in
service with this jumper installed will result in
serious damage.

M-3425A

60 to 100 V dc source - simulates

PROCESSOR Exciter Supply Voltage

DC Supply
Field Ground
Detection

Squarewave Vout 3
Generator 37 5
Coupling
35 4 Network 2
M-3921 *
Signal Test Switch
Measurement Vf
and Rf
Processing Cf
36 1 1
Discrete Capacitor to
simulate Field Winding
Rear Terminal Capacitance
Block Pin No.

Decade Box or Discrete Resistor

to simulate Fault Resistance

*The value of Cf should approximate the rotor capacitance.

Figure 6-7 Field Ground Coupler

6–45
M-3425A Instruction Book

64B Brush Lift-Off Detection

VOLTAGE INPUTS: None

CURRENT INPUTS: None
TEST SETTINGS: Pickup P mV (0 to 5000)
Time Delay D Cycles (1 to 8160)
Injection Frequency IF Hz (0.10 to 1.00)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. Determine the Function 64F Field Ground Protection settings to be tested.
2. Enter the Function 64F Field Ground Protection settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect a M-3921 Field Ground Coupler and the test equipment described in Figure 6-7, Field
Ground Coupler.
5. Set Rf to open (infinity) and Cf to 1 μF.

Pickup Test:
1. Access the FIELD GND MEAS. CIRCUIT display under the VOLTAGE menu in STATUS. Set the
pickup (P) to 110% of the displayed value.
Refer to Section 3.3, Status/Metering, for details that describe how to access the STATUS MENU
which contains the FIELD GND MEAS. CIRCUIT value in mV.
2. Press and hold the TARGET RESET pushbutton, then Open the Test Switch. The FIELD GND/
BRUSH LIFT 64F/B LED will illuminate or the pickup indicator on the IPScom Function Status
screen will illuminate.
3. Close the Test Switch. The FIELD GND/BRUSH LIFT 64F/B LED will extinguish or the pickup
indicator on the IPScom Function Status screen will extinguish.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Remove the capacitance connected to the decade box and start timing. The operating time will be
after D cycles, within ±(2/IF + 1) sec.

6–46
 Testing – 6

64S 100% Stator Ground Protection by low frequency injection

VOLTAGE INPUTS: Adjustable 20 Hz Voltage Source (0 to 40 V)

CURRENT INPUTS: Adjustable 20 Hz Current Source (0 to 40 mA)
TEST SETTINGS: Pickup P mA (2 to 40)
Time Delay D Cycles (1 to 8160)
Undervoltage Inhibit X V (5 to 30)
Undervoltage Inhibit (Enabled/Disabled)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)
Test Setup:
1. Determine the Function 64S 100% Stator Ground by injection settings to be tested.
2. Enter the Function 64S 100% Stator Ground settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect a variable 20 Hz voltage and current input as described in Figure 6-6, 64S Test
Configuration.

Pickup Test (Undervoltage Inhibit Disabled):

1. Adjust the 20 Hz Voltage Generator to apply 25 Volts to terminals 44 and 45.
2. Press and hold the TARGET RESET pushbutton in, then slowly increase the 20 Hz current
applied to terminals 52 and 53 until the 27TN/59D/64S STATOR GND LED illuminates, or the
function status indicator on the Monitor Function Status screen indicates that the function has
picked up.
The 20 Hz current level should be equal to P mA 1 mA or 1%.
3 Release the TARGET RESET pushbutton.
4. Adjust the 20 Hz Voltage Generator to apply 15 Volts to terminals 44 and 45.
5. Press and hold the TARGET RESET pushbutton in, then slowly increase the 20 Hz current
applied to terminals 52 and 53 until the 27TN/59D/64S STATOR GND LED illuminates, or the
function status indicator on the Monitor Function Status screen indicates that the function has
picked up.
The 20 Hz current level should be equal to 0.6 P mA 1 mA.
6 Release the TARGET RESET pushbutton.
7. Adjust the 20 Hz Voltage Generator to apply 35 Volts to terminals 44 and 45.
8. Press and hold the TARGET RESET pushbutton in, then slowly increase the 20 Hz current
applied to terminals 52 and 53 until the 27TN/59D/64S STATOR GND LED illuminates, or the
function status indicator on the Monitor Function Status screen indicates that the function has
picked up.
The 20 Hz current level should be equal to 1.4 P mA 1 mA or 1%.
9. Release the TARGET RESET pushbutton.
10. Decrease the applied 20 Hz current to 0 mA and the applied 20 Hz voltage to 0 Volts.

6–47
M-3425A Instruction Book

Pickup Test (Undervoltage Inhibit Enabled):

■ NOTE: This test assumes that the value of X is less than 25 Volts.
1. Enable the 64S Undervoltage Inhibit utilizing either the HMI or IPScom Communications Software.
2. Adjust the 20 Hz Voltage Generator to a value less than X.
3. Adjust the 20 Hz Current Generator to a value greater than P.
4. Press and hold the TARGET RESET pushbutton in, then slowly increase the 20 Hz voltage
applied to terminals 44 and 45 until the 27TN/59D/64S STATOR GND LED illuminates, or the
function status indicator on the Monitor Function Status screen indicates that the function has
picked up.
The 20 Hz voltage level should be equal to X 0.5 V to 0.5%.
5 Release the TARGET RESET pushbutton.
6. Decrease the applied 20 Hz current to 0 mA and the applied 20 Hz voltage to 0 Volts.

Timer Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Adjust the 20 Hz Voltage Generator to apply 25 Volts to terminals 44 and 45.
3. Step the 20 Hz current applied to terminals 52 and 53 to a value greater than P and start timing.
The contacts will close after D cycles within 1 cycle or 1%. Time delay accuracy in cycles is
based on 20 Hz frequency.

6–48
 Testing – 6

67N Residual Directional Overcurrent, Definite Time

VOLTAGE INPUTS: See Below

CURRENT INPUTS: See Below
TEST SETTINGS: Pickup P Amps (0.50 to 240.0)
1 Amp (0.1 to 48.0)
Directional Element See Below
Time Delay D Cycles (1 to 8160)
Max Sensitivity Angle MSA Degrees (0 to 359)
Operating Current 3IO or IN
Polarization Type* VN, VX, 3VO (Calculated)
Programmed Outputs Z Output (1 to 8)
Expanded I/O (9 to 23)

* VX cannot be selected if Function 25 (Sync) is enabled. 3VO can only be used with Line-Ground VT.

Test Setup:
1. Determine the Function 67NDT Residual Directional Overcurrent, Definite Time settings to be
tested.
2. Enter the Function 67N Residual Directional Overcurrent, Definite Time settings to be tested
utilizing either the HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Disable the Directional Element.
5. Connect inputs for the polarization type and operating current selected for testing.

Pickup Test (non-directional):

1. Apply current 10% less than pickup P to the operating current. If 3I0, use any one of IA, IB, or IC, or
all three in zero sequence.
2. Press and hold the TARGET RESET pushbutton in, then slowly increase the current applied to
the selected operating current until the GND DIFF/DIR O/C 87GD/67N LED illuminates, or the
function status indicator on the Monitor Function Status screen indicates that the function has
picked up.
The level should be equal to PI3 Amps 0.1A or 3%.
3 Release the TARGET RESET pushbutton.
4. Decrease the current applied to all phases of the selected operating current. The OUTPUT LED
will extinguish.

6–49
M-3425A Instruction Book

Directional Test:
1. Enable the Directional Element utilizing either the HMI or IPScom Communications Software.
2. Press the TARGET RESET pushbutton to reset targets.
3. Set the voltage of the selected polarization type to the Nominal Voltage (If 3V0 is selected, use
any one of the phase voltages, or all three in zero sequence.) The Nominal Voltage value
previously input to the relay is described in Section 2.1 and should be recorded on Figure A-3,
Functional Configuration Record Form.
4. Set the current angle to an angle greater than 100° from MSA.
5. Apply current 10% greater than P to the input of the selected operating current.
6. Press and hold the TARGET RESET pushbutton, then slowly swing the angle of the selected
operating current applied towards the MSA until the GND DIFF/DIR O/C 87GD/67N LED
illuminates, or the function status indicator on the Monitor Function Status screen indicates that
the function has picked up.
The angle should be equal to A –90° or +90°, depending to which side of MSA the current has
been set.
7. Release the TARGET RESET pushbutton.
8. Swing the current angle away from the MSA. The OUTPUT LED will extinguish.

Timer Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Disable the Directional Element utilizing either the HMI or IPScom Communications Software.
3. Apply P +10% Amps to the input of the selected operating current, and start timing. The contacts
will close after D cycles within –1 to +3 cycles or 1%.

6–50
 Testing – 6

6 7N Residual Directional Overcurrent, Inverse Time

VOLTAGE INPUTS: See Below

CURRENT INPUTS: See Below
TEST SETTINGS: Pickup P Amps (0.25 to 12.0)
1 Amp CT Rating (0.05 to 2.40)
Directional See Below
BECO Inverse Time Curves
Definite Time\Inverse\Very Inverse\Extremely Inverse
Time Dial TD (0.5 to 11.0)
IEC Inverse Time Curves
IECI / IECVI / IECEI / IECLTI
Time Dial TD (0.05 to 1.10)
IEEE Inverse Time Curves
IEEEI/IEEEVI/IEEEEI
Time Dial TD (0.5 to 15)
Operating Current 3IO or IN
Max Sensitivity Angle MSA Output (0 to 359)
Polarization Type VN, VX, 3VO (Calculated)
Programmed Outputs Z Output (1 to 8)
Expanded I/O (9 to 23)

* VX cannot be selected if Function 25 (Sync) is enabled. 3VO can only be used with Line-Ground VT.

Test Setup:
1. Determine the Function 67N Residual Directional Overcurrent, Inverse Time settings to be tested.
2. Enter the Function 67N Residual Directional Overcurrent, Inverse Time settings to be tested
utilizing either the HMI or IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Disable Directional Element.
5. Refer to Appendix D, Inverse Time Curves, and IEC equations below to calculate test times for
levels represented on the graphs. It is suggested that 4 or 5 test levels be chosen.

IEC Class A IEC Class B IEC Class C IEC Class D

Standard Inverse Very Inverse Extremely Inverse Long Time Inverse

t=TD x [M
0.14
0.02
-1 ] t=TD x [M-1 ]
13.5
t=TD x [M -1 ]
80
2 t=TD x [M-1 ]
120

Curve 5 Curve 6 Curve 7 Curve 8

t = time in seconds TD = Time Dial setting M = current in multiples of pickup

Time Delay Test:

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply the input current used in the calculations from Step 5 to the input of the selected operating
current, and start timing.
The operating time will be ±3 cycles or ±5% of the calculated time. Repeat this step for each test
level chosen. The points tested verify the operation of this function.

6–51
M-3425A Instruction Book

Directional Test:
1. Enable Directional Element.
2. Press the TARGET RESET pushbutton to reset targets.
3. Apply Nominal Voltage to the input of the selected Polarization Type. If 3V0, use any one of the
phase voltages, or all three at zero sequence.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.
4. Set the current angle to an angle greater than 100° from MSA.
5. Apply current 10% greater than PI3, (for type 3, use P) to all three phases.
6. Press and hold the Target Reset pushbutton, then slowly swing the angle of the selected
operating current towards the MSA until the GND DIFF/DIR O/C 87GD/67N LED illuminates, or
the function status indicator on the Monitor Function Status screen indicates that the function
has picked up.
The angle should be equal to A –90° or +90°, depending to which side of MSA the current has
been set.
7. Release the TARGET RESET pushbutton.
8. Swing the current angle away from the MSA. The OUTPUT LED will extinguish.

6–52
 Testing – 6

78 Out of Step

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: Configuration C1
TEST SETTINGS: Circle Diameter P Ohms (0.1 to 100)
1 Amp CT Rating (0.5 to 500)
Offset O Ohms (–100 to 100)
1 Amp CT Rating (–500 to 500)
Impedance Angle A Degrees (0 to 90)
Time Delay D Cycles (1 to 8160)
Blinder Impedance B Ohms (0.1 to 50.0)
1 Amp CT Rating (0.5 to 250.0)
Pole Slip Counter (1 to 20)
Pole Slip Reset Cycles (1 to 8160)
Trip on MHO Exit See Below
Programmed Output Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. An accurate stopwatch is required for this test.
2. Determine the Function 78 Out of Step settings to be tested.
3. Establish communications with the relay utilizing IPScom® Communications Software.
4. Enter the Function 78 Out of Step settings to be tested utilizing IPScom Communications
Software.
5. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
6. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
7. Connect test current inputs as shown in Figure 6-4, Current Inputs: Configuration C1.
8. Set the three-phase voltages VA, VB, and VC to the Nominal Voltage.
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should be
recorded on Figure A-3, Functional Configuration Record Form.

Pickup Test:
1. Disable the Function 78 Out of Step TRIP ON MHO EXIT setting, then set the delay, D, to a
minimal setting (2–3 cycles).
2. Open the IPScom Out-of-Step Dialog Box, Figure 4-32 (Relay/Monitor/Out of Step Dialog Box).
3. While monitoring the Positive Sequence Impedance, set the magnitude and phase angle of the
Input Currents to a point similar to point Z0 in Figure 2-61.
4. Press and hold the TARGET RESET pushbutton, then sweep the current angle towards point Z1.
When the impedance passes through point Z1, verify that the 78 OUT OF STEP LED illuminates,
or the function status indicator on the Monitor Function Status screen indicates that the function
has picked up.

6–53
M-3425A Instruction Book

5. Pause testing until the delay timer has time to expire, then continue to sweep the current angle to
point Z2, and verify output Z operates as point Z2 is crossed, and resets after the seal-in time
delay.
6. If testing is complete, then reduce voltages and currents to zero.

Blocking on Stable Swing Test:

1. While monitoring the Positive Sequence Impedance, set the magnitude and phase angle of the
Input Currents to a point outside of the mho circle.
2. While monitoring the Positive Sequence Impedance, set the magnitude and phase angle of the
Input Currents to point Z0 in Figure 2-61.
3. Press and hold the TARGET RESET pushbutton, then sweep past point Z1.
When the impedance passes through point Z1, verify that the 78 OUT OF STEP LED illuminates,
or the function status indicator on the Monitor Function Status screen indicates that the function
has picked up.
4. Pause testing until the delay timer has time to expire, then reverse the sweep direction and sweep
the current angle to point Z1.
As point Z1 is crossed, verify output Z does not operate and the 78 OUT OF STEP LED
extinguishes or the function status indicator on the Monitor Function Status screen indicates
that the function has reset.
6. If testing is complete, then reduce voltages and currents to zero.

Pickup Test (Trip on mho Exit):

1. Enable the TRIP ON MHO EXIT setting.
2. While monitoring the Positive Sequence Impedance, set the magnitude and phase angle of the
Input Currents to point Z0 in Figure 2-61.
3. Press and hold the TARGET RESET pushbutton, then sweep the current angle towards point Z1.
When the impedance passes through point Z1, verify that the 78 OUT OF STEP LED illuminates
or the function status indicator on the Monitor Function Status screen indicates that the function
has picked up.
4. Pause testing until the delay timer has time to expire, then continue to sweep the current angle to
beyond point Z2. Verify that output Z does not operate as point Z2 is crossed.
5. Sweep the impedance further towards point Z3. Verify output Z operates as point Z3 is crossed,
and resets after the seal-in time delay has timed out.
6. If testing is complete, then reduce voltages and currents to zero.

6–54
 Testing – 6

81 Frequency (#1, #2, #3, #4)

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: None
TEST SETTINGS: Pickup P Hz (50.00 to 67.00)
50 Hz Relay (40.00 to 57.00)
Time Delay D Cycles (3 to 65,500)
50 Hz Relay
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: It would be efficient to disable the elements with the settings nearest to nominal frequency first
(testing over or underfrequency functions).
Test Setup:
1. Determine the Function 81 Frequency settings to be tested.
2. Enter the Function 81 Frequency settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. Set the three-phase voltages VA, VB, and VC to the Nominal Voltage (nominal frequency). The
Nominal Voltage value previously input to the relay is described in Section 2.1 and should be
recorded on Figure A-3, Functional Configuration Record Form.
Pickup Test:
1. Press and hold the TARGET RESET pushbutton, then slowly increase/decrease the Input
Voltage (VA, VB, and VC ) Frequency until the FREQUENCY/ROCOF 81/81R LED illuminates or the
function status indicator on the Monitor Function Status screen indicates that the function has
picked up.
The frequency level will be equal to P Hz ±0.02 Hz only if P is within 3 Hz of Fnom, otherwise,
0.1 Hz.
2. Increase/decrease the Input Voltage (VA, VB, and VC ) Frequency to nominal input frequency. The
OUTPUT LED(s) will extinguish.
3. Press TARGET RESET pushbutton to reset targets.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply (P + or – 0.5) Hz and start timing. The contacts will close after D cycles within 2 cycles
or 1%, whichever is greater.

6–55
M-3425A Instruction Book

81A Frequency Accumulator (Band #1, #2, #3, #4, #5, #6)

VOLTAGE INPUTS: V1
CURRENT INPUTS: None
TEST SETTINGS: High Pickup (#1 only) P Hz (50.00 to 67.00)
50 Hz Relay (40.00 to 57.00)
Low Pickup P Hz (50.00 to 67.00)
50 Hz Relay (40.00 to 57.00)
Delay D Cycles (3 to 360,000)
Acc Status Cycles (0 to 360,000)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. Determine the Function 81A Frequency Accumulator settings to be tested.
2. Enter the Function 81A Frequency Accumulator settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
5. Set the three-phase voltages VA, VB, and VC to the Nominal Voltage (nominal frequency). The
Nominal Voltage value previously input to the relay is described in Section 2.1 and should be
recorded on Figure A-3, Functional Configuration Record Form.

Output Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Set the frequency to a value between the upper and lower limits of the selected band under test
and start timing.
3. Utilizing either the HMI (Status/81A Accumulator Status) or IPScom Communications Software
(Relay/Monitor/Accumulator Status), verify that the Accumulator Status value for the band under
test is incrementing.
Output Contacts Z will close after D cycles within 2 cycles or 1%.
4. Repeat Steps 1 to 3 for the remaining bands if desired.

6–56
 Testing – 6

81R Rate of Change of Frequency (#1, #2)

VOLTAGE INPUTS: Configuration V1

CURRENT INPUTS: None
TEST SETTINGS: Pickup P Hz/Sec (0.10 to 20.00)
Time Delay D Cycles (3 to 8160)
Negative Sequence
Voltage Inhibit N % (0 to 99)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. It is recommended that the 81 Function be used to establish a window of operation for the 81R
Function which is smaller than the actual sweep range of the frequency applied. This is
accomplished as follows:
■ NOTE: The frequencies given are suggested for testing rates below 10 Hz/Sec. Higher rates will require
consideration of the capabilities of the test equipment involved.
a. Enable the 81#1 with a unique Output assigned, a Pickup Setting of 1 Hz greater than the
minimum frequency of the ramp and a time delay and seal-in time setting at minimum (This
will result in an operational window that is free of erroneous Hz/Sec measurements when the
voltage source begins or ends the sweep.).
b. Enable the 81#2 with a unique Output assigned, a Pickup Setting of 1 Hz less than the
maximum frequency of the ramp and a time delay and seal-in time setting at minimum (This
will result in an operational window that is free of erroneous Hz/Sec measurements when the
voltage source begins or ends the sweep.).
■ NOTE: Using this setup, it is important to remember that the 81 elements being used will be operating in
the 81R blocking regions, and the 81R contact operation must be distinguished from the 81
contacts.

F81#1 Block 81R Active Region F81#2 Block

56.5 Hz 57.5 Hz 60 Hz 62.5 Hz 63.5 Hz

c. Utilizing a jumper, connect the 81#1 and 81#2 assigned Outputs to a unique Input.
d. Set the 81R Function to block on this input.
2. Determine the Function 81R Rate of Change of Frequency settings to be tested.
3. Enter the Function 81R Rate of Change of Frequency settings to be tested utilizing either the HMI
or IPScom Communications Software.
4. Disable all other functions prior to testing with the exception of Function 81. Refer to Section 3.2,
Initial Setup Procedure/Settings, Configure Relay Data subsection, for details that describe
disabling/enabling functions.
■ NOTE: Testing of the 81R function requires a 3-phase voltage source capable of smoothly sweeping the
frequency of all voltages at a variable rate, continuously.
5. Connect test voltage inputs as shown in Figure 6-1, Voltage Inputs: Configuration V1.
6. Set the three-phase voltages VA, VB, and VC to the Nominal Voltage (nominal frequency).
The Nominal Voltage value previously input to the relay is described in Section 2.1 and should
be recorded on Figure A-3, Functional Configuration Record Form.

6–57
M-3425A Instruction Book

Pickup Test:
1. Calculate the time for the pickup setting, then apply a sweep rate of 25% less than the Pickup (P)
to all three phases.
2. Press and hold the TARGET RESET pushbutton, then slowly decrease the sweep time until the
FREQUENCY/ROCOF 81/81R LED illuminates, or the function status indicator on the Monitor
Function Status screen indicates that the function has picked up.
The level should be equal to P 0.05 Hz/Sec. or 5 %.
3. Release the TARGET RESET pushbutton, then increase the sweep time. The OUTPUT LED will
extinguish.

Negative Sequence Voltage Inhibit Test:

1. Press the TARGET RESET pushbutton to reset targets.
2. Apply Nominal Voltage to all three phases at a sweep rate 25% above P. The Nominal Voltage
value previously input to the relay is described in Section 2.1 and should be recorded on Figure
A-3, Functional Configuration Record Form.
Verify that the FREQUENCY/ROCOF 81/81R LED illuminates, or the function status indicator on
the Monitor Function Status screen indicates that the function has picked up.
3. Swing the phase angle of a Phase Voltage and monitor the Positive and Negative Sequence
Voltage levels. The 81R OUTPUT should reset when the negative sequence voltage is N %,
0.5% of the positive sequence voltage.

Timer Test:
1. Press the TARGET RESET pushbutton to reset targets.
2. Apply Nominal Voltage to all three phases at a sweep rate 25% below P. The Nominal Voltage
value previously input to the relay is described in Section 2.1 and should be recorded on Figure
A-3, Functional Configuration Record Form.
3. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
4. Apply a sweep rate 25% above P and start timing. The contacts will close after D cycles within
+20 cycles.

6–58
 Testing – 6

87 Phase Differential (#1 or #2)

VOLTAGE INPUTS: None

CURRENT INPUTS: Configuration C3
TEST SETTINGS: Minimum Pickup P Amps (0.20 to 3.00)
1 Amp CT Rating (0.04 to 0.60)
Percent Slope S % (1 to 100)
Time Delay D Cycles (1 to 8160)
CT Correction Amps (0.5 to 2.0)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

■ NOTE: Although a voltage input is not required for the testing of the 87 function, it is suggested that
Nominal Voltage be applied to restrain the functions which use both voltage and current inputs for
operation.

Test Setup:
1. Determine the Function 87 Phase Differential settings to be tested.
2. Enter the Function 87 Phase Differential settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect test current inputs as shown in Figure 6-5, Current Inputs: Configuration C3.

Minimum Pickup Test:

1. Set Current Input 1( Ia ) to 0 Amps.
2. Press and hold the TARGET RESET pushbutton, then slowly increase Current Input 2 (IA ) until
the PHASE DIFF CURRENT 87 LED illuminates, or the function status indicator on the Monitor
Function Status screen indicates that the function has picked up.
The current level of operation will be equal to P amps ±0.1 A or ±5%.
3. Release the TARGET RESET pushbutton, then decrease the Current Input 2 (IA ). The OUTPUT
LED(s) will extinguish.
4. Press TARGET RESET pushbutton to reset targets.
5. Repeat Steps 1,2,3 and 4 for each remaining phase exchanging IA(B,C) and Ia(b,c) as appropriate.

Timer Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply a current level to Current Input 2 (IA ) at least 10% greater than the minimum current pickup
level and start timing. The contacts will close after D cycles within 1 cycle or ±1%. When the
Time Delay is set to 1 cycle, the relay operation is less than 1-1/2 cycles.

6–59
M-3425A Instruction Book

Slope Test:
1. Define a representative number of testing points to verify the trip curve.
2. For each Ia (Current Input 1) test point defined in Step 1, calculate the expected operating
current IA (Current Input 2) as follows:
(IA-Ia) > (IA +I a) x Slope/100 ÷2
Difference in currents is greater than sum of the currents times the per unit slope ÷2
or IA = [(1+K) ÷ (1-K)] x Ia where K = S/200 and where S is % slope input above.

■ NOTE: For tests above the restraint current {(IA+Ia)/2} value of 2X Nominal Current; use a slope % value
equal to 4 times the input slope value (S) for these computations.

3. Set Current Input 1 (Ia ) and Current Input 2 (IA ) to the values chosen in Step 1 and calculated in
Step 2 respectively.
4. Press and hold the TARGET RESET pushbutton, then slowly increase either Current Input 1 or 2
until the PHASE DIFF CURRENT 87 LED illuminates, or the function status indicator on the
Monitor Function Status screen indicates that the function has picked up.
The current level of operation will be equal to IA ±0.1 A or ±2% slope calculation. The difference in
current must be greater than minimum pickup current for proper operation.
5. Release the TARGET RESET pushbutton, then decrease the larger CURRENT. The OUTPUT
LED(s) will extinguish.
6. Press TARGET RESET pushbutton to reset targets.

6–60
 Testing – 6

87GD Ground Differential

VOLTAGE INPUTS: None

CURRENT INPUTS: As described
TEST SETTINGS: Pickup P Amps (0.20 to 10.00)
1 Amp CT Rating (0.04 to 2.00)
▲ CAUTION: Do NOT set the delay to less than 2 Cycles
Time Delay D Cycles (1 to 8160)
CT Ratio Correction (0.10 to 7.99)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. Determine the Function 87GD Ground Differential settings to be tested.
2. Enter the Function 87GD Ground Differential settings to be tested utilizing either the HMI or
IPScom® Communications Software.
3. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
4. Connect a current input to IN terminals 53 and 52.
5. Connect a current input to IA terminals 46 and 47, or IB terminals 48 and 49.

Non–Directional Pickup Test:

1. Press and hold the TARGET RESET pushbutton, then slowly increase Current Input IN (terminals
53 and 52) until the GND DIFF/DIR O/C 87GD/67N LED illuminates, or the function status
indicator on the Monitor Function Status screen indicates that the function has picked up.
The current level of operation will be equal to P amps ±0.1 A or 5%.
2. Release the TARGET RESET pushbutton, then decrease the Current Input IN to 0 Amps. The
OUTPUT LED(s) will extinguish.
3. Press TARGET RESET pushbutton to reset targets.

Timer Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply a current level to Current Input IN at least 10% greater than the minimum current pickup
level and start timing. The contacts will close after D cycles within +1 to -2 cycles or ±1%.
3. Decrease the Current Input IN to 0 Amps.

Directional Time Test:

1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Apply a current of 1.0 Amp with a phase angle of 0 degrees to Current Input IN (terminals 53 and
52).
3. Apply a current of P – 0.9 amps with a phase angle of 180 degrees to either Current Input IA or IB
and start timing.
The contacts will close after D cycles within 1 cycle or 1%.
4. Decrease the applied currents to 0 Amps.

6–61
M-3425A Instruction Book

5. Press the TARGET RESET pushbutton to reset targets.

6. Set the phase angle of the Current Input selected in Step 3, to 0 degrees, the Current Inputs are
now in phase.
7. Reapply a current of 1.0 Amp to Current Input IN (terminals 53 and 52).
8. Reapply a current of P – 0.9 Amps to the Current Input selected in Step 3, and start timing.
The relay will not operate. If the IA or IB current input value is reduced to 140 ma or less and the
difference current exceeds the pickup value, the relay will operate regardless of polarities of the
currents.
9. Decrease the applied currents to 0 amps.

6–62
 Testing – 6

BM Breaker Monitoring

VOLTAGE INPUTS: None

CURRENT INPUTS: As Described
TEST SETTINGS: Pickup P kAmps (kA2)* (0 to 50,000)
Delay D Cycles (0.1 to 4095.9)
Timing Method ( IT or I2T)
Preset Accumulators
Phase A, B, or C kAmp (kA2) Cycles*(0 to 50,000)
Programmed Outputs Z OUT (1 to 8)
Blocking Inputs (1 to 6)
Expanded I/O (7 to 14)
Output Initiate (1 to 8)
Expanded I/O (9 to 23)
Input Initiate (1 to 6)
Expanded I/O (7 to 14)
* kA/kA cycles or kA2/kA2 cycles is dependent on the Timing Method that is selected.

Test Setup:
1. Determine the Breaker Monitoring Function settings to be tested (Input Initiate or Output Initiate).
2. Enter the Breaker Monitoring Function settings to be tested utilizing either the HMI or IPScom®
Communications Software.
3. Connect a current input to IA terminals 46 and 47, IB terminals 48 and 49, and IC terminals 50 and
51.
4. Connect inputs for the polarization type selected for testing.

Accumulator Test:
1. Apply a current value that considers Timing Method and Pickup Setting to current input IA.
2. Place a jumper between the designated input or output contact selected as initiate.
3. Utilizing either the HMI (Status/Breaker Monitor Accumulator Status) or IPScom Communications
Software (Relay/Monitor/Accumulator Status), verify that the Accumulator Status value for Phase
A increments in D cycles 1 cycles or 1%.
4. Remove the jumper placed in Step 2.
5. Decrease applied IA current to 0 amps.
6. If desired, repeat test for IB and IC.

Pickup Test:
1. Apply a current value that considers Timing Method and Pickup Setting to current input IA.
■ NOTE: If the target pickup setting is a large value (0 to 50,000) the Preset Accumulator Settings feature
can be used to pre-set the accumulator values to just below the target setting.

6–63
M-3425A Instruction Book

2. Utilizing either the HMI (Status/Breaker Monitor Accumulator Status) or IPScom Communications
Software (Relay/Monitor/Accumulator Status) to monitor the accumulator value, place a jumper
between the designated input or output contact selected as initiate and then remove the jumper.
Following the time out of the Delay the accumulator will increment, repeat the placement and
removal of the jumper as necessary to increment the accumulator to a point where the pickup
setting is exceeded.
3. When the accumulator value exceeds the pickup value the OUTPUT LED(s) will illuminate, or the
function status indicator on the Monitor Function Status screen indicates that the function has
picked up.
The output contacts Z will operate in D cycles 1 cycle or 1% from the last initiate.
4. If desired, repeat test for IB and IC.

6–64
 Testing – 6

Trip Circuit Monitoring

VOLTAGE INPUTS: As Described

CURRENT INPUTS: None
TEST SETTINGS: Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)

Test Setup:
1. Determine the Trip Circuit Monitoring function settings to be tested.
2. Disable all other functions prior to testing. Refer to Section 3.2, Initial Setup Procedure/Settings,
Configure Relay Data subsection, for details that describe disabling/enabling functions.
3. Connect a DC voltage supply capable of supplying 24/48/125/250 V dc (marked on the rear of the
relay) to terminals 1 (–) and 2 (+) on the relay.
4. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.

Pickup Test:
1. Apply the applicable DC voltage (24/48/125/250 V dc marked on the rear of the relay) to terminals
1 and 2.
2. Enable the Trip Circuit Monitoring function and then enter the settings to be tested utilizing either
the HMI or IPScom Communications Software.
3. Remove the DC voltage applied in Step 1. The OUTPUT LED will illuminate, or the function status
indicator on the Monitor Function Status screen will indicate that the Trip Circuit Monitoring
function has actuated.
The contacts will close after D cycles within 1 cycle or 1%.
4. Simulate a 52b contact open by connecting a jumper between terminal 11 (INRTN) and terminal 10
(IN1) which. The BRKR CLOSED and OUTPUT LEDs on the front of the relay should extinguish.
Also, the function status indicator on the Monitor Function Status screen will indicate that the
Trip Circuit Monitoring function has cleared and the Secondary Status screen will indicate that the
breaker is closed.
5. Remove the jumper installed in Step 4.
The contacts will close after D cycles within 1 cycle or 1%.

6–65
M-3425A Instruction Book

IPSlogicTM (#1, #2, #3, #4, #5, #6)

VOLTAGE INPUTS: As Needed

CURRENT INPUTS: As Needed
TEST SETTINGS: Time Delay D Cycles (1 to 8160)
Programmed Outputs Z OUT (1 to 8)
Expanded I/O (9 to 23)
Blocking Inputs (1 to 6)
Expanded I/O (7 to 14)
Output Initiate (1 to 8)
Expanded I/O (9 to 23)
Function Initiate Pickup (All Available Functions)
Function Initiate Time Out
Initiate by Communication
Input Initiate (1 to 6)
Expanded I/O (7 to 14)
Block from Communication

Test Setup:
1. Refer to Figure 2-75, IPSlogic Function Setup, for logic gate configurations.
2. Select gate configuration (AND/OR/NAND/NOR) for Output Initiate, Function Initiate, Blocking
Inputs and Inputs Main.
3. Select Initiating Inputs for each gate (if AND gate is selected, ensure at least two outputs are
chosen). It will be necessary to enable and operate other functions to provide inputs for the
Function Initiate and Output Initiate gates.

Time Test:
1. Connect a timer to output contacts (Z) so that the timer stops timing when the contacts (Z) close.
2. Connect a jumper from IN RTN (Terminal 11) to the designated Inputs (Terminals 1–6) for the
IPSlogic gates and start timing. The IPS LOGIC LED and the OUTPUT LED will illuminate, or the
function status indicator on the Monitor Function Status screen indicates that the function has
picked up.
The operating time will be D cycles ±1 cycle or 1%.

Blocking Input Test:

1. Press and hold the TARGET RESET pushbutton, then place a jumper from IN RTN (terminal 11)
to the designated Blocking Inputs (terminals 1-6) to be tested. The EXTERNAL #1 EXT 1 LED will
extinguish.
2. Repeat Step 1 for each designated external triggering contact.

6–66
 Testing – 6

2. Press the right arrow pushbutton until

6.3 Diagnostic Test Procedures the following is displayed:
SETUP UNIT
Overview
SETUP exit
The diagnostic test procedures perform basic
functional relay tests to verify the operation of the
front-panel controls, inputs, outputs, and 3. Press ENTER, the following will be
communication ports. displayed:
8 WARNING: Do not enter DIAGNOSTIC MODE SOFTWARE VERSION
when protected equipment is in service. Entering VERS sn access number
DIAGNOSTIC MODE when protected equipment
is in service removes all protective functions of
the relay. 4. Press the right arrow pushbutton until
The diagnostic menu includes the following tests: the following is displayed:
• OUTPUT (Output Test Relay) DIAGNOSTIC MODE
time error DIAG
• INPUT (Input Test Status)
• LED (Status LED Test)
• TARGET (Target LED Test) 5. Press ENTER, the following warning will
be displayed:
• EX_IO (Expanded I/O Test, Not Available
at this time) PROCESSOR WILL RESET!
• BUTTON (Button Test) ENTER KEY TO CONTINUE
• DISP (Display Test)
• COM1 (COM1 Loopback Test) 8 WARNING: Do not enter DIAGNOSTIC MODE
• COM2 (COM2 Loopback Test) when protected equipment is in service. Entering
DIAGNOSTIC MODE when protected equipment
• COM3 (COM3 Echo Test 2-Wire)
is in service removes all protective functions of
Each test is described individually in this section. the relay.
The diagnostic menu also provides access to the
following relay feature settings: 6. Press ENTER, the relay will reset and
DIAGNOSTIC MODE will be temporarily
• CLOCK (Clock On/Off)
displayed followed by:
• LED (Relay OK LED Flash/Solid)
OUTPUT TEST (RELAY)
• CAL (Auto Calibration) OUTPUT input led target
• FACTORY (Factory Use Only) button disp
Auto Calibration is described in detail in Section com1 com2 com3 clock
6.4, Auto Calibration. led cal factory

Entering Relay Diagnostic Mode

8 WARNING: Do not enter DIAGNOSTIC MODE
This marks the beginning of the diagnostic menu.
The left arrow and right arrow pushbuttons are used
when protected equipment is in service. Entering to navigate within the diagnostic menu. Exiting the
DIAGNOSTIC MODE when protected equipment diagnostic menu is accomplished by pressing EXIT,
is in service removes all protective functions of PRESS EXIT TO EXIT DIAGNOSTIC MODE is
the relay. displayed, then pressing EXIT a second time.
1. Press ENTER to access the main menu.

6–67
M-3425A Instruction Book

Output Relay Test (Output Relays 1–23 and 25) 3. If the relay is already in the Diagnostic
■ NOTE: This test does not include testing of Mode, then go to Step 4.
Power Supply Relay (Output Relay 24). If the relay is NOT in the Diagnostic
Mode, then enter the relay diagnostic
1. Ensure the protected equipment is in a
mode by performing the steps described
configuration/state that can support relay
in the Entering Relay Diagnostic Mode
output testing. section of this chapter, then go to Step 4.
2. Confirm the positions of the outputs in
4. Ensure that the Diagnostic Menu is
the unoperated or OFF position. This
selected to OUTPUT (Upper Case).
can be accomplished by connecting a
DMM (Digital Multimeter) across the OUTPUT TEST (RELAY)
appropriate contacts and confirming open OUTPUT input led target
or closed. The de-energized or OFF button disp
position for outputs 1 through 25 are com1 com2 com3 clock
listed in Table 6-1. led cal factory
RELAY OUTPUT NORM ALLY OPEN NORM ALLY CLOSED
NUM BER CONTACT CONTACT* If OUTPUT is not selected (Upper Case),
then use the Right/Left arrow pushbuttons
1 33- 34 --
to select OUTPUT.
2 31- 32 --
5. Press ENTER, the relay will display the
3 29- 30 --
following:
4 27- 28 --
5 25- 26 --
RELAY NUMBER
1
6 23- 24 --
7 21- 20 21- 22
8 17- 18 18- 19 6. Select the Output Relay (from Table 6-1)
9 104- 105 -- to be tested, utilizing the Up/Down arrow
pushbuttons.
10 102- 103 --
11 100- 101 -- 7. Press ENTER. The following will be
displayed for the selected relay:
12 98- 99 --
13 96- 9 7 -- RELAY NUMBER 1
14 94- 95 --
OFF on
15 92- 93 --
16 90- 91 -- 8. Select ON (Upper Case) utilizing the
17 88- 89 -- Right arrow pushbutton. The relay will
18 86- 87 -- respond as follows:
19 84- 85 -- a. Output relay energizes (On position)
20 82- 83 -- b. Appropriate red OUTPUT LED
illuminates, if equipped.
21 80- 81 --
If testing all output relays, then press
22 78- 79 --
EXIT to return to the output relay
23 76- 77 -- selection menu, then repeat Steps 6, 7
Powe r Supply (24) -- 12- 13 and 8 for each output relay.
Se lf-Te s t (25) 14- 15 15- 16 9. The DMM can now be used to verify that
*" Normal" posit ion of t he cont act corresponds t o t he OFF (de-energized) st at e of t he the output relay contact is in the operated
relay. or ON position. The readings should be
the opposite of the initial reading
Table 6-1 Output Contacts determined in Step 2.
10. When output relay testing is complete
then restore all output relays to their de-
energized or OFF positions listed in Table
6-1 and press EXIT to return to the
Diagnostic Menu.

6–68
 Testing – 6

11. If all Diagnostic Testing is complete, Input Test (Control/Status)

then exit the diagnostic menu by pressing The INPUT TEST menu enables the user to
EXIT, PRESS EXIT TO EXIT determine the status of the individual control/status
DIAGNOSTIC MODE is displayed, then inputs. Individual inputs can be selected by number
press EXIT a second time. using the up and down arrow pushbuttons. The
status of the input will then be displayed.
Output Relay Test (Power Supply Relay 24)
The power supply output relay can be tested by INPUT COMMON
performing the following: TERMINAL
NUMBER TERMINAL
■ NOTE: For this test the relay is not required to
1 (52b) 11 10
be in the Diagnostic Mode.

1. Ensure the protected equipment is in a 2 11 9

configuration/state that can support relay
output testing. 3 11 8
2. Confirm the position of output relay 24 in
the unoperated or OFF position. This 4 11 7
can be accomplished by connecting a
DMM (Digital Multimeter) across the 5 11 6
appropriate contacts and confirming open
or closed. The de-energized or OFF 6 11 5
position for Output 24 is listed in Table
6-1.
Expanded I/O Inputs
3. Remove power from the relay. The DMM
can now be used to verify that output 7 66 or 67 75
relay 24 contact is in the operated or ON
position. The reading should be the
8 66 or 67 74
opposite of the initial reading determined
in Step 2.
9 66 or 67 73
4. Restore power to the relay.
10 66 or 67 72

11 66 or 67 71

12 66 or 67 70

13 66 or 67 69

14 66 or 67 68

Table 6-2 Input Contacts

1. Ensure the protected equipment is in a

configuration/state that can support relay
input testing.
2. If the relay is already in the Diagnostic
Mode, then go to Step 3.
If the relay is NOT in the Diagnostic
Mode, then enter the relay diagnostic
mode by performing the steps described
in the Entering Relay Diagnostic Mode
section of this chapter, then go to Step 3.

6–69
M-3425A Instruction Book

3. Ensure that the Diagnostic Menu is 10. When input testing is complete then
selected to INPUT (Upper Case). insure all jumpers have been removed
and press EXIT to return to the Diagnostic
INPUT TEST (RELAY) Menu.
output INPUT led target
button disp 11. If all Diagnostic Testing is complete,
com1 com2 com3 clock then exit the diagnostic menu by pressing
led cal factory EXIT, PRESS EXIT TO EXIT
DIAGNOSTIC MODE is displayed, then
press EXIT a second time.
If INPUT is not selected (Upper Case),
then use the Right/Left arrow pushbuttons
to select INPUT. Status LED Test
4. Press ENTER. The following is displayed: The STATUS LED TEST menu enables the user to
check the front-panel LEDs individually.
INPUT NUMBER
1

5. Select the Input Relay (from Table 6-2) COM 1

RELAY BRKR
TARGET
OK CLOSED TARGET PS 1
to be tested utilizing the Up/Down arrow RESET

pushbuttons.
TIME OSC. DIAG PS 2
SYNC TRIG
6. Press ENTER. The following is displayed
for the selected relay:
INPUT NUMBER 1
CIRCUIT OPEN M-3425A
GENERATOR PROTECTION
7. If no external control/status inputs are
connected to the relay, then place a
jumper between the IN RTN terminal BECKWITH CO. INC.
ELECTRIC
(terminal #11 for Inputs 1–6, and either
Made in U.S.A.
terminal #66 or #67 for Inputs 7–14) and
the IN1 terminal (terminal #10). See Table
6-2 for terminals for inputs 2 through 14.
Figure 6-8 Status LED Panel
Alternatively, if this specific input is
being used in this application and the 1. If the relay is already in the Diagnostic
external wiring is complete, the actual Mode, then go to Step 2.
external control/status input contact can
be manually closed. This will test the If the relay is NOT in the Diagnostic
input contact operation and the external Mode, then enter the relay diagnostic
wiring to the input contacts. mode by performing the steps described
in the Entering Relay Diagnostic Mode
The following is immediately displayed: section of this chapter, then go to Step 2.
INPUT NUMBER 1 2. Ensure that the Diagnostic Menu is
CIRCUIT CLOSED selected to LED (Upper Case).
STATUS LED TEST
8. Remove the jumper between the IN RTN
terminal (terminal #11 for Inputs 1–6, output input LED target
and either terminal #66 or #67 for Inputs button disp
7–14) and the IN1 terminal (terminal #10). com1 com2 com3 clock
led cal factory
The following is immediately displayed:
INPUT NUMBER 1 If LED is not selected (Upper Case),
CIRCUIT OPEN then use the Right/Left arrow pushbuttons
to select LED.
9. If testing all inputs, press EXIT to return 3. Press ENTER. LED #1 (RELAY OK)
to the input selection menu, then repeat illuminates and the following is displayed:
Steps 5, 6, 7 and 8 for each input.
STATUS LED TEST
LED NUMBER 1 = ON

6–70
 Testing – 6

4. If testing all Status LEDs, press the 3. Press ENTER. Target LED #1 lights and
right arrow pushbutton to toggle through the following is displayed:
the remaining LEDs illustrated in Figure
TARGET LED TEST
6-8, with the exception of the PS1 &
PS2 LEDs. LED NUMBER 1 = ON

5. When Status LED testing is complete

press EXIT to return to the Diagnostic 4. If testing all Target LEDs, press the right
Menu. arrow pushbutton to toggle through the
remaining Target LEDs illustrated in
6. If all Diagnostic Testing is complete, Figure 6-9.
then exit the diagnostic menu by pressing
EXIT, PRESS EXIT TO EXIT 5. When Target LED testing is complete
DIAGNOSTIC MODE is displayed, then press EXIT to return to the Diagnostic
press EXIT a second time. Menu.
6. If all Diagnostic Testing is complete,
Target LED Test then exit the diagnostic menu by pressing
EXIT, PRESS EXIT TO EXIT
The TARGET LED TEST menu allows the user to DIAGNOSTIC MODE is displayed, then
check the M-3925A Target Module LEDs individually. press EXIT a second time.

TARGETS Button Test

24 VOLTS/Hz PHASE OVERCURRENT 50
The BUTTON TEST menu selection allows the user
27 PHASE UNDERVOLTAGE PHASE OVERCURRENT 51V to check the M-3931 HMI Module buttons. As each
59 PHASE OVERVOLTAGE NEUTRAL O/C 50N/51N
27TN/59D/64S STATOR GND SPLIT PHASE DIFF 50DT
pushbutton is pressed, its name is displayed.
59N/59X NEUT/GND OVERVOLT STATOR OVERLOAD 49
32 DIRECTIONAL POWER NEG SEQ OVERCURRENT46
21 PHASE DISTANCE FIELD GND/BRUSH LIFT64F/B
40 LOSS OF FIELD FREQUENCY 81/81R/81A
78 OUT OF STEP PHASE DIFF CURRENT 87
50BF BREAKER FAILURE GND DIFF/DIR O/C 87GD/67N
50/27INADVERTENT ENRGNG TRIP CIRCUIT MONITOR TC BECKWITH ELECTRIC CO.
60FL V.T. FUSE LOSS IPS LOGIC LOGIC M-3425A

OUTPUTS
a
OUT 1 OUT 3 OUT 5 OUT 7
OUT 2 OUT 4 OUT 6 OUT 8

a
Figure 6-9 M-3925A Target Module Panel
a
a

1. If the relay is already in the Diagnostic

Mode, then go to Step 2. EXIT ENTER

If the relay is NOT in the Diagnostic

Mode, then enter the relay diagnostic
mode by performing the steps described Figure 6-10 M-3931 Human-Machine
in the Entering Relay Diagnostic Mode Interface Module
section of this chapter, then go to Step 2.
2. Ensure that the Diagnostic Menu is 1. If the relay is already in the Diagnostic
selected to TARGET (Upper Case). Mode, then go to Step 2.
TARGET LED TEST If the relay is NOT in the Diagnostic
output input led TARGET Mode, then enter the relay diagnostic
button disp mode by performing the steps described
com1 com2 com3 clock in the Entering Relay Diagnostic Mode
led cal factory section of this chapter, then go to Step 2.

If TARGET is not selected (Upper Case),

then use the Right/Left arrow pushbuttons
to select TARGET.

6–71
M-3425A Instruction Book

2. Ensure that the Diagnostic Menu is 2. Ensure that the Diagnostic Menu is
selected to BUTTON (Upper Case). selected to DISPLAY TEST (Upper
Case).
BUTTON TEST
output input led target DISPLAY TEST
BUTTON disp output input led target
com1 com2 com3 clock button DISP
led cal factory com1 com2 com3 clock
led cal factory
If BUTTON is not selected (Upper Case),
then use the Right/Left arrow pushbuttons If DISP is not selected (Upper Case),
to select BUTTON. then use the Right/Left arrow pushbuttons
to select DISP.
3. Press ENTER. The following is displayed:
3. Press ENTER, the unit will display a
BUTTON TEST sequence of test characters until EXIT
0 is pushed.

■ NOTE: Pressing the EXIT pushbutton will exit 4. After the test has cycled through
from this test, and therefore should be completely, press EXIT to return to the
last pushbutton tested. If it is pushed Diagnostic Menu.
before this test sequence is completed, 5. If all Diagnostic Testing is complete,
the test may be restarted by pushing then exit the diagnostic menu by pressing
ENTER. Notice that the word EXIT is EXIT, PRESS EXIT TO EXIT
displayed temporarily before the test DIAGNOSTIC MODE is displayed, then
sequence is exited. press EXIT a second time.

4. Press each pushbutton for test. As each

button is pressed, the display will briefly COM1/COM2 Loopback Test
show the name for each key (“RIGHT The COM1 LOOPBACK TEST menu allows the
ARROW”, “UP ARROW”, etc). user to test the front-panel RS-232 port. COM2
5. When pushbutton testing is complete LOOPBACK TEST menu tests the rear panel RS-232
press EXIT to return to the Diagnostic port.
Menu.
A loopback plug is required for this test. The required
6. If all Diagnostic Testing is complete, loopback plug consists of a DB9P connector (male)
then exit the diagnostic menu by pressing with pin 2 (RX) connected to pin 3 (TX) and pin 7
EXIT, PRESS EXIT TO EXIT (RTS) connected to pin 8 (CTS). No other
DIAGNOSTIC MODE is displayed, then connections are necessary.
press EXIT a second time.
M-3425A
Display Test COM1/COM2
The DISPLAY TEST menu selection enables the DB9P
user to check the display. This test cycles through
1
varying test patterns until EXIT is pressed.
RX 2
1. If the relay is already in the Diagnostic TX 3
Mode, then go to Step 2.
4
If the relay is NOT in the Diagnostic SGND 5
Mode, then enter the relay diagnostic 6
mode by performing the steps described RTS 7
in the Entering Relay Diagnostic Mode CTS 8
section of this chapter, then go to Step 2. 9
Figure 6-11 COM1/COM2 Loopback Plug

6–72
 Testing – 6

1. If the relay is already in the Diagnostic 8. Ensure that the Diagnostic Menu is
Mode, then go to Step 2. selected to COM2 LOOPBACK TEST
(Upper Case).
If the relay is NOT in the Diagnostic
Mode, then enter the relay diagnostic COM2 LOOPBACK TEST
mode by performing the steps described output input led target
in the Entering Relay Diagnostic Mode button disp
section of this chapter, then go to Step 2. com1 COM2 com3 clock
2. Ensure that the Diagnostic Menu is led cal factory
selected to COM1 LOOPBACK TEST
(Upper Case). If COM2 is not selected (Upper Case),
then use the Right/Left arrow pushbuttons
COM1 LOOPBACK TEST to select COM2.
output input led target
button disp 8. Press ENTER, then repeat Steps 3
COM1 com2 com3 clock through 6 for COM2.
led cal factory
COM3 Test (2-Wire)
If COM1 is not selected (Upper Case), The COM3 Echo Test 2-Wire allows the user to test
then use the Right/Left arrow pushbuttons the RS-485 rear terminal connections for proper
to select COM1.
operation.
3. Press ENTER. The following is displayed:
■ NOTE: This test requires a PC with an RS-485
COM1 LOOPBACK TEST converter and terminal emulator software
CONNECT LOOPBACK PLUG installed.

4. Connect the loop-back plug to COM1, 1. If the relay is already in the Diagnostic
the front-panel RS-232C connector. Mode, then go to Step 2.
5. Press ENTER, the relay will initiate the If the relay is NOT in the Diagnostic
loopback test. Mode, then enter the relay diagnostic
mode by performing the steps described
If the COM Port passes the loopback in the Entering Relay Diagnostic Mode
test the following will be displayed: section of this chapter, then go to Step
COM1 LOOPBACK TEST 2.
-DONE- 2. Ensure that the Diagnostic Menu is
selected to COM3 ECHO TEST 2 WIRE
If the COM Port fails the loopback test (Upper Case).
the following will be displayed:
COM3 ECHO TEST 2 WIRE
COM1 LOOPBACK TEST output input led target
RX–TX FAIL button disp
com1 com2 COM3 clock
6. Press EXIT to return to the DIAGNOSTIC led cal factory
Menu.
7. If all Diagnostic Testing is complete, If COM3 is not selected (Upper Case),
then exit the diagnostic menu by pressing then use the Right/Left arrow pushbuttons
EXIT, PRESS EXIT TO EXIT to select COM3.
DIAGNOSTIC MODE is displayed, then 3. Press ENTER. The following is displayed:
press EXIT a second time.
COM3 ECHO TEST 2WIRE
IDLING...9600, N, 8, 1

6–73
M-3425A Instruction Book

4. From the rear of the unit, connect a PC Clock ON/OFF

to the relay at terminals 3(-) and 4(+) This feature provides the user with the ability to
using an RS-485 converter set for 2-wire either start or stop the clock.
operation. See Figure 6-12 for diagram.
1. If the relay is already in the Diagnostic
3 4 RS-485
Mode, then go to Step 2.
RS-232
+ RS-232 to RS-485 If the relay is NOT in the Diagnostic
converter or PC card Mode, then enter the relay diagnostic
(2 wire) mode by performing the steps described
-
in the Entering Relay Diagnostic Mode
section of this chapter, then go to Step 2.
- + 2. Ensure that the Diagnostic Menu is
selected to CLOCK ON/OFF (Upper
Case).
CLOCK START/STOP
RS-485
COM3 Computer output input led target
button disp
Figure 6-12 RS-485 2-Wire Testing com1 com2 com3 CLOCK
led cal factory
5. Set the following PC communications
parameters: If CLOCK is not selected (Upper Case),
Baud Rate 9600 then use the Right/Left arrow pushbuttons
to select CLOCK.
Parity None
■ NOTE: ‘80’ will be displayed in the seconds
Data Bits 8 place when the clock is stopped.
Stop Bits 1 3. Press ENTER, the following is displayed:
Duplex Half a. If the clock is already running the
6. Open the terminal emulator program on following will be displayed and will
the PC, then open the COM port for the continue to update.
RS-485 converter. CLOCK TEST
7. Press a key on the PC keyboard, then 01-Jan-2003 01:01:01
verify the following:
b. If the clock was NOT running the
a. The character pressed is displayed following will be displayed:
temporarily on the relay display.
b. The character pressed is displayed CLOCK TEST
on the PC monitor. 01-Jan-2003 01:01:80
8. When communication has been verified, 4. To start or stop the clock press ENTER,
press EXIT, the following is displayed: the following is displayed:
COM3 ECHO TEST 2WIRE a. If the clock is already running the
-DONE- following will be displayed:

9. Press EXIT to return to the DIAGNOSTIC CLOCK TEST

Menu. CLOCK STOP
10. Close the COM port on the PC, and exit CLOCK TEST
the terminal program.
01-Jan-2003 01:01:80
11. If all Diagnostic Testing is complete,
then exit the diagnostic menu by pressing
EXIT, PRESS EXIT TO EXIT
DIAGNOSTIC MODE is displayed, then
press EXIT a second time.

6–74
 Testing – 6

b. If the clock was NOT running the 3. Press ENTER, the following will be
following will be displayed: displayed:
CLOCK TEST FLASH RELAY OK LED
CLOCK START OFF on

4. Select (upper case) either ON (to flash)

CLOCK TEST or OFF (to Illuminate) by pressing the
01-Jan-2003 01:01:01 right/left arrow pushbutton once.
5. Press ENTER, the following will be
■ NOTE: To preserve battery life the clock should displayed:
be OFF if the unit is to be left de- FLASH RELAY OK LED
energized for a long period of time. -DONE-
5. The clock can be toggled ON or OFF by
pressing any arrow pushbutton or ENTER. 6. To exit the FLASH RELAY OK LED
Diagnostic Menu press EXIT.
To exit the Clock ON/OFF mode press
EXIT, the following will be displayed: 7. If all Diagnostic Testing is complete,
then exit the diagnostic menu by pressing
CLOCK TEST EXIT, PRESS EXIT TO EXIT
-DONE- DIAGNOSTIC MODE is displayed, then
press EXIT a second time.
6. To exit the CLOCK ON/OFF Diagnostic
Menu press EXIT.
Auto Calibration
7. If all Diagnostic Testing is complete,
Refer to the following Section 6.4, Auto Calibration,
then exit the diagnostic menu by pressing
for more information on that function.
EXIT, PRESS EXIT TO EXIT
DIAGNOSTIC MODE is displayed, then AUTO CALIBRATION
press EXIT a second time. clock led CAL factory

Relay OK LED Flash/Illuminated

Factory Use Only
This feature provides the user with the ability to set
This function is provided to allow access by factory
the relay OK LED to either Flash or be Illuminated
personnel.
when the relay is working properly.
1. If the relay is already in the Diagnostic FACTORY USE ONLY
Mode, then go to Step 2. clock led cal FACTORY
If the relay is NOT in the Diagnostic
Mode, then enter the relay diagnostic
mode by performing the steps described
in the Entering Relay Diagnostic Mode
section of this chapter, then go to Step 2.
2. Ensure that the Diagnostic Menu is
selected to FLASH RELAY OK LED
(Upper Case).
FLASH RELAY OK LED
output input led target
button disp
com1 com2 com3 clock
LED cal factory

If LED (to the left of cal) is not selected

(Upper Case), then use the Right/Left
arrow pushbuttons to select LED.

6–75
M-3425A Instruction Book

7. Press ENTER, the following will be

6.4 Auto Calibration displayed:
CONNECT REFERENCE INPUTS
■ NOTE: The M-3425A Generator Protection Relay PRESS ENTER TO CALIBRATE
has been fully calibrated at the factory.
There is no need to recalibrate the unit
prior to initial installation. However, in- 8. Connect VA = VB = VC = VN = VX =120.0
(±0.01) V at 0° phase. (See Figure 6-14.)
system calibration of the 64F function
may be needed for units purchased with 9. Connect I a=I b=I c =I A=I B=I C=I N✢=5.00**
the 64F Field Ground option. Calibration Amps at 0° (see Figure 6-13).
can be initiated using the HMI or IPSutil™
program. ** For a 1 A CT rating, use 1 A.
✢
If 64S is purchased, do not put nominal
Phase and Neutral Fundamental Calibration current in the IN channel. The IN input is
calibrated separately (see 64S
1. If the relay is already in the Diagnostic procedure.)
Mode, then go to Step 2.
If the relay is NOT in the Diagnostic The calibration can be verified by exiting from the
Mode, then enter the relay diagnostic Diagnostic menu and reading status:
mode by performing the steps described
in the Entering Relay Diagnostic Mode VA=VB=V C=VN=V X=120V V1=V2=0 V0=120V
section of this chapter, then go to Step 2.
IA=IB=IC=5 A** I1=I2=0 I0=5 A**
2. Ensure that the Diagnostic Menu is
selected to CAL (upper case). Ia=Ib=Ic=5 A**

FLASH RELAY OK LED Real=1 pu Reactive=0.0 pu

output input led target
button disp Power Factor = 1.0
com1 com2 com3 clock
Idiffa = Idiffb = Idiffc = 0
led CAL factory
Where subscript 0, 1, and 2 represent zero, positive,
If CAL is not selected (Upper Case), and negative sequence quantities, respectively.
then use the Right/Left arrow pushbuttons
to select CAL. ** For a 1 A CT rating, use 1 A.
3. Press ENTER, the following will be
displayed: ■ NOTE: The phase angle difference between
voltage and current input source should
60 HZ CALIBRATION be 0°, ±0.05°, and an accurate low-
60_HZ field_gnd distortion source should be used. (THD
less than 1%).
4. Ensure that the 60 HZ Calibration Menu
is selected to 60_HZ (Upper Case). 10. Press ENTER, the following will be
If 60_HZ is not selected (Upper Case), displayed while the relay is being
then use the Right/Left arrow pushbuttons calibrated:
to select 60_HZ. CALIBRATING
5. Press ENTER, the following will be WAIT
displayed:
When the calibration is complete, the
60 HZ CALIBRATION following will be displayed:
NOM_F 3rdh_F 64s_f
CALIBRATING
6. Ensure that NOM_F is selected (Upper DONE
Case).
11. Remove the calibration source inputs.
If NOM_F is not selected (Upper Case),
then use the Right/Left arrow pushbuttons
to select NOM_F.

6–76
 Testing – 6

Third Harmonic Calibration b. Connect VA=VB=VC=120.0 V, 180 Hz

1. If it is desired to calibrate the third (150 Hz for 50 Hz units). See Figure
harmonic only and the relay is already in 6-16.
the Diagnostic Mode, then go to Step 2. 9. Press ENTER, the following will be
If it is desired to calibrate the third displayed while the Third Harmonic is
harmonic only and the relay is NOT in calibrated:
the Diagnostic Mode, then enter the relay CALIBRATING
diagnostic mode by performing the steps WAIT
described in the Entering Relay
Daignostic Mode section of this chapter,
When the calibration is complete, the
then go to Step 2.
following will be displayed:
2. Ensure that the Diagnostic Menu is
selected to CAL (upper case). AUTO CALIBRATION
DONE
FLASH RELAY OK LED
output input led target 10. Remove the voltage from VN and VX.
button disp
11. Remove the calibration source inputs.
com1 com2 com3 clock
led CAL factory
64S 100% Stator Ground by Low Frequency
If CAL is not selected (Upper Case), Injection Calibration
then use the Right/Left arrow pushbuttons 1. If it is desired to calibrate the 64S 100%
to select CAL. Stator Ground by Low Frequency
3. Press ENTER, the following will be Injection only and the relay is already in
displayed: the Diagnostic Mode, then go to Step 2.

60 HZ CALIBRATION If it is desired to calibrate the 64S 100%

Stator Ground by Low Frequency
60_HZ field_gnd
Injection only and the relay is NOT in the
Diagnostic Mode, then enter the relay
4. Ensure that the 60 HZ Calibration Menu diagnostic mode by performing the steps
is selected to 60_HZ (Upper Case). described in the Entering Relay
If 60_HZ is not selected (Upper Case), Daignostic Mode section of this chapter,
then use the Right/Left arrow pushbuttons then go to Step 2.
to select 60_HZ. 2. Ensure that the Diagnostic Menu is
5. Press ENTER, the following will be selected to CAL (upper case).
displayed: FLASH RELAY OK LED
60 HZ CALIBRATION output input led target
nom_f 3RDH_F 64s_f button disp
com1 com2 com3 clock
6. Ensure that 3RDH_F is selected (Upper led CAL factory
Case).
If 3RDH_F is not selected (Upper Case), If CAL is not selected (Upper Case),
then use the Right/Left arrow pushbuttons
then use the Right/Left arrow pushbuttons
to select CAL.
to select 3RDH_F.
7. Press ENTER, the following will be 3. Press ENTER, the following will be
displayed:
displayed:
60 HZ CALIBRATION
INPUT 180 HZ
60_HZ field_gnd
PRESS ENTER TO CALIBRATE
4. Ensure that the 60 HZ Calibration Menu
(150 Hz for 50 Hz units)
is selected to 60_HZ (Upper Case).
8. Connect Voltage Inputs as follows:
If 60_HZ is not selected (Upper Case),
a. Connect VN= VX =10.0 V, 180 Hz then use the Right/Left arrow pushbuttons
(150 Hz for 50 Hz units). See Figure to select 60_HZ.
6-15.

6–77
M-3425A Instruction Book

5. Press ENTER, the following will be 3. Ensure that the Diagnostic Menu is
displayed: selected to CAL (upper case).
60 HZ CALIBRATION FLASH RELAY OK LED
nom_f 3rdh_f 64S_F output input led target
button disp
6. Ensure that 64S_F is selected (Upper com1 com2 com3 clock
Case). led CAL factory
If 64S_F is not selected (Upper Case),
then use the Right/Left arrow pushbuttons If CAL is not selected (Upper Case),
to select 64S_F. then use the Right/Left arrow pushbuttons
to select CAL.
7. Press ENTER, the following will be
displayed: 4. Press ENTER, the following will be
displayed:
INPUT 20 HZ
PRESS ENTER TO CALIBRATE 60 HZ CALIBRATION
60_HZ field_gnd
8. Connect VN=10.0 V ( 0.01 V) 20 Hz,
IN=10.0 mA ( 0.01 mA) 20 Hz. See 5. Ensure that the 60 HZ Calibration Menu
Figure 6-6. is selected to FIELD_GND (Upper Case).
9. Press ENTER, the following will be If FIELD_GND is not selected (Upper
displayed while the 64S is calibrated: Case), then use the Right arrow
pushbutton to select FIELD_GND.
CALIBRATING
WAIT 6. Press ENTER, the following will be
displayed:
When the calibration is complete, the CONNECT 1 KOHM REF.
following will be displayed: PRESS ENTER TO CALIBRATE
CALIBRATING
DONE
7. Set the decade box for 1 kΩ resistance,
10. Remove the voltage from VN and IN. then press ENTER, the following will be
displayed:
11. Remove the calibration source inputs.
CALIBRATING
WAIT
Field Ground Calibration
Field Ground Calibration only applies to units 8. When the calibration is complete the
purchased with the 64F Field Ground option. following will be displayed:
Calibration is necessary for long cable lengths
CALIBRATING
(greater than 100 feet) to compensate for cabling
DONE
losses from the M-3425A and the M-3921 Coupler
module, and therefore should be accomplished in
9. Press ENTER, the unit will display the
system, after all wiring is complete.
next resistance in the calibration
1. Connect the M-3921 Field Ground Coupler sequence to be tested.
box as shown in Figure 6-7, Field Ground
Coupler. 10. Set the decade box to the resistance
specified by the HMI, then press ENTER.
2. If the relay is already in the Diagnostic When the display shows DONE press
Mode, then go to Step 3. ENTER.
If the relay is NOT in the Diagnostic 11. Repeat Step 10 until the calibration is
Mode, then enter the relay diagnostic complete for 100 kΩ.
mode by performing the steps described
in the Entering Relay Daignostic Mode 12. Press EXIT twice to exit the Diagnostic
section of this chapter, then go to Step 3. Mode.

6–78
 Testing – 6

Polarity 55 47
Ia IA
54 46

57 49

Ib IB
56 48

Current Input
59 51
Ic IC
58 50

53

IN
52

Figure 6-13 Current Input Configuration

39
Hot
Voltage
Input VA
38
Neutral
41

VB
40

43

VC
42

65

VX
64

45
Hot
Voltage
Input VN
44
Neutral

Figure 6-14 Voltage Input Configuration

65
Hot
VX
64
Voltage Neutral
Input 45
Hot
VN
44
Neutral
Figure 6-15 Voltage Input Configuration

6–79
M-3425A Instruction Book

39
Hot
Voltage
Input VA
38
Neutral
41

VB
40

43

VC
42

Figure 6-16 Voltage Input Configuration

6–80
 Appendix – A

A Appendix A – Configuration Record Forms

This Appendix contains photocopy–ready forms for Figure A-3, Functional Configuration Record Form
recording the configuration and setting of the reproduces the Configure Relay menus. For each
M-3425A Generator Protection Relay. The forms function or setpoint, refer to the configuration you
can be supplied to field service personnel for have defined using the Relay Configuration Table,
configuring the relay, and kept on file for future and circle whether it should be enabled or disabled,
reference. the output contacts it will activate, and the inputs
that will block its operation.
A copy of the Relay Configuration Table (Table
A-1) is provided to define and record the blocking Figure A-4, Setpoint & Timing Record Form allows
inputs and output configuration. For each function; recording of the specific values entered for each
check the D (disabled) column or check the output enabled setpoint or function. The form follows the
contacts to be operated by the function, and check main menu selections of the relay.
the inputs designated to block the function operation.
Unpurchased or unavailable functions will not be
Figure A-2, Communication Data & Unit Setup visible within the menus. If a function is DISABLED,
Record Form reproduces the Communication and the input/output screens for that function will not be
Setup unit menus. This form records definition of displayed.
the parameters necessary for communication with
the relay, as well as access codes, user logo lines,
date & time setting, and front panel display operation.

A–1
M-3425A Instruction Book

D O U T P U T S I N P U T S
FUNCTION
8 7 6 5 4 3 2 1 FL 6 5 4 3 2 1

21 2

1
24
2

25

27 2

1
27TN
2

32 2

1
40
2

DEF
46
INV

49

1
50
2

50BF

50N

1
50DT
2

50/27

51N

51V

59 2

59D

59N 2

Check each box applicable : ✓ (See page A-1 for information on using this table.)
D Column = Function Disabled.
OUTPUTS Columns =Designated function output(s)
fl Column = Function blocked by fuse loss.
INPUTS Columns =Designated function blocking input(s)

Table A-1 Relay Configuration Table (page 1 of 4)

A–2
 Appendix – A

D O U T P U T S I N P U T S
FUNCTION
8 7 6 5 4 3 2 1 FL 6 5 4 3 2 1

59X

60FL

64B

1
64F
2

DEF
67N
INV

64S

78

2
81
3

3
81A
4

1
81R
2

1
87
2

87GD

BM

TCKT

3
IPS
4

Check each box applicable : ✓ (See page A-1 for information on using this table.)
D Column = Function Disabled.
OUTPUTS Columns =Designated function output(s)
fl Column = Function blocked by fuse loss.
INPUTS Columns =Designated function blocking input(s)

Table A-1 Relay Configuration Table (page 2 of 4)

A–3
M-3425A Instruction Book

D EXPANDED OUTPUTS EXPANDED INPUTS

FUNCTION
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 14 13 12 11 10 9 8 7

21 2

1
24
2

25

27 2

1
27TN
2

32 2

1
40
2

DEF
46
INV

49

1
50
2

50BF

50N

1
50DT
2

50/27

51N

51V

59 2

59D

59N 2

Table A-1 Relay Configuration Table (page 3 of 4)

A–4
 Appendix – A

D EXPANDED OUTPUTS EXPANDED INPUTS

FUNCTION
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 14 13 12 11 10 9 8 7

59X

60F L

64B

1
64F
2

DEF
67N
INV

64S

78

2
81
3

3
81A
4

1
81R
2

1
87
2

87GD

BM

TCKT

3
IPS
4

Table A-1 Relay Configuration Table - Expanded I/O (page 4 of 4)

A–5
M-3425A Instruction Book

KEY TO INPUT DATA RECORD FORMS

A. All heavily bordered screens are either MENU screens which have horizontal choices
(made with right - left arrows) or screens displaying a result of a choice previously made.
B. Dashed boxes enclose screens which bound areas that pushbutton ENTER will
move in. In order to move out of one of the dotted boxes it is necessary to either push EXIT or
make a menu choice change using the Right - Left arrow.
C. The Up/Down arrows only adjust value or letter (lower/upper case) inputs; they do not move within
the menus or between menu displays.
D. The Right/Left arrows are used only to make horizontally displayed choices. These can be either
menu choices or input value digit choices. The previous choice or location in a menu is highlighted
immediately.
E. The ENTER pushbutton records the setting change (whatever is in that screen when ENTER is
pressed will be installed in memory) and moves down within a menu. The operator will notice that
after the last menu item, ENTER moves to the top of the same menu but does not change menu
positions.
F. Pressing EXIT at any time will exit the display screen to the last screen containing a horizontal
choice. (Return to the preceding menu).

BECKWITH ELECTRIC CO.

M-3425A
a

a
a
a

EXIT ENTER

Figure A-1 Human-Machine Interface Module

G. The symbol or in a screen indicates additional horizontal menu choices are available in the
indicated direction. As previously described, the Right and Left arrows will move the operator to
those additional choices.

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

A–6
 Appendix – A
COMMUNICATION
targets osc_rec COMM

COM1 SETUP COM3 SETUP

COM1 com2 com3 com-adr com1 com2 COM3 com_adr

COM1 BAUD RATE COM3 DEAD SYNC TIME

baud_300 baud_600 baud_1200 ________ MS
baud_4800 BAUD_9600
COM3 PROTOCOL
beco2200 MODBUS
COM2 SETUP
com1 COM2 com3 com_adr COM3 PARITY
NONE odd even
COM2 BAUD RATE
baud_300 baud_600 baud_1200 COM3 STOP BITS
baud_4800 BAUD_9600 ________

COM2 DEAD SYNC TIME

________ MS COMMUNICATION ADDRESS
com1 com2 com3 COM_ADR
COM2 PROTOCOL
beco2200 MODBUS COMMUNICATION ADDRESS
________
COM2 PARITY
none odd even
RESPONSE TIME DELAY
COM2 STOP BITS DLY accss eth eth_ip
________
COMM ACCESS CODE
dly ACCSS eth eth_ip

COMM ACCESS CODE

________

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-2 Communication Data & Unit Setup Record Form (page 1 of 3)

A–7
M-3425A Instruction Book
COMMUNICATION
targets osc_rec COMM

ETHERNET ETHERNET PROTOCOL

dly accss ETH eth_ip tcp PROT

ETHERNET SELECT PROTOCOL

disable ENABLE modbus serconv

TCP/IP SETTINGS ETHERNET ADDRESS

TCP prot accss eth ETH_IP

DHCP PROTOCOL ETHERNET IP ADDRESS

disable ENABLE XX.XX.XX.XX

DHCP PROTOCOL After EXIT to Comm menu,

DISABLE enable the following will be dis-
played (if any changes have
IP ADDRESS been made in ETHERNET menu)
________
CONFIGURING ETH...
NET MASK
________

GATEWAY ETHERNET IP ADDRESS

________ XX.XX.XX.XX

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-2 Communication Data & Unit Setup Record Form (page 2 of 3)

A–8
 Appendix – A
SETUP UNIT
SETUP exit

SOFTWARE VERSION CLEAR ALARM COUNTER

VERS sn access number logo1 logo2 out ALRM
SOFTWARE VERSION CLEAR ALARM COUNTER
D-XXXXV__.__.__ PRESS ENTER KEY TO CLEAR

SERIAL NUMBER
vers SN access number DATE & TIME
TIME error eth_ver
SERIAL NUMBER
________ DATE & TIME
01-Jan-2001 12:00:00
ALTER ACCESS CODES DATE & TIME
vers sn ACCESS number ________ YEAR
ENTER ACCESS CODE
LEVEL#1 level#2 level#3 DATE & TIME
JAN feb mar apr may
jun jul aug sep oct
LEVEL #1
nov dec
________
ENTER ACCESS CODE DATE & TIME
level#1 LEVEL#2 level#3 ________ DATE

LEVEL #2 DATE & TIME

________ sun mon tue wed thu
fri sat
ENTER ACCESS CODE
level#1 level#2 LEVEL#3 DATE & TIME
________ HOUR
LEVEL #3
________ DATE & TIME
________ MINUTES
USER CONTROL NUMBER
vers sn access NUMBER DATE & TIME
________ SECONDS
USER CONTROL NUMBER
________
CLEAR ERROR CODES
time ERROR eth_ver
USER LOGO LINE 1
LOGO1 logo2 out alrm CLEAR ERROR CODES
PRESS ENTER KEY TO CLEAR
USER LOGO LINE 1

ETHERNET FIRMWARE VER

time error ETH_VER
USER LOGO LINE 2
logo1 LOGO2 out alrm
ETHERNET FIRMWARE VER
D-____V__.__.__
USER LOGO LINE 2

CLEAR OUTPUT COUNTERS DIAGNOSTIC MODE

logo1 logo2 OUT alrm DIAG

CLEAR OUTPUT COUNTERS PROCESSOR WILL RESET!

PRESS ENTER KEY TO CLEAR ENTER KEY TO CONTINUE

Figure A-2 Communication Data & Unit Setup Record Form (page 3 of 3)

A–9
M-3425A Instruction Book
CONFIGURE RELAY
CONFIG sys stat
CONFIGURE RELAY
VOLTAGE_RELAY

27 #1 PHASE UNDERVOLTAGE 59 #1 PHASE OVERVOLTAGE

disable ENABLE disable ENABLE

27 #1 BLOCK INPUT 59 #1 BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

59 #1 RELAY OUTPUT
27 #1 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o19 o18 o17 o16 o15 o23 o22 o21 o20
o23 o22 o21 o20

59 #2 PHASE OVERVOLTAGE
27 #2 PHASE UNDERVOLTAGE disable ENABLE
disable ENABLE
59 #2 BLOCK INPUT
27 #2 BLOCK INPUT fl i6 i5 i4 i3 i2 i1
fl i6 i5 i4 i3 i2 i1 i11 i10 i9 i8 i7
i11 i10 i9 i8 i7 i14 i13 i12
i14 i13 i12
59 #2 RELAY OUTPUT
27 #2 RELAY OUTPUT o8 o7 o6 o5 o4 o3 o2 o1
o8 o7 o6 o5 o4 o3 o2 o1 o14 o13 o12 o11 o10 o9
o14 o13 o12 o11 o10 o9 o19 o18 o17 o16 o15
o19 o18 o17 o16 o15 o23 o22 o21 o20
o23 o22 o21 o20

59 #3 PHASE OVERVOLTAGE
27 #3 PHASE UNDERVOLTAGE disable ENABLE
disable ENABLE
59 #3 BLOCK INPUT
27 #3 BLOCK INPUT fl i6 i5 i4 i3 i2 i1
fl i6 i5 i4 i3 i2 i1 i11 i10 i9 i8 i7
i11 i10 i9 i8 i7 i14 i13 i12
i14 i13 i12
59 #3 RELAY OUTPUT
27 #3 RELAY OUTPUT o8 o7 o6 o5 o4 o3 o2 o1
o8 o7 o6 o5 o4 o3 o2 o1 o14 o13 o12 o11 o10 o9
o14 o13 o12 o11 o10 o9 o19 o18 o17 o16 o15
o19 o18 o17 o16 o15 o23 o22 o21 o20
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

9 to 23 must be set through
IPScom®.

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (1 of 18)

A–10
 Appendix – A
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
VOLTAGE_RELAY

27TN #1 NEUTRL UNDERVOLT 59X #2 OVERVOLTAGE

disable ENABLE disable ENABLE

27TN #1 BLOCK INPUT 59X #2 BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

27TN #1 RELAY OUTPUT 59X #2 RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15 o19 o18 o17 o16 o15
o23 o22 o21 o20 o23 o22 o21 o20

27TN #2 NEUTRL UNDERVOLT 59N #1 NEUTRAL OVERVOLT

disable ENABLE disable ENABLE

27TN #2 BLOCK INPUT 59N #1 BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12
27TN #2 RELAY OUTPUT 59N #1 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o19 o18 o17 o16 o15
o23 o22 o21 o20
o23 o22 o21 o20

59X #1 OVERVOLTAGE
disable ENABLE

59X #1 BLOCK INPUT

fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i14 i13 i12

59X #1 RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

Q NOTE: Unpurchased or unavailable func- 9 to 23 must be set through
tions will not be visible within the menus. IPScom®.

Figure A-3 Functional Configuration Record Form (2 of 18)

A–11
M-3425A Instruction Book

CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
VOLTAGE_RELAY

59N #2 NEUTRAL OVERVOLT 59D VOLTAGE DIFF.

disable ENABLE disable ENABLE

59N #2 BLOCK INPUT 59D BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

59N #2 RELAY OUTPUT 59D RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15 o19 o18 o17 o16 o15
o23 o22 o21 o20 o23 o22 o21 o20

59N #3 NEUTRAL OVERVOLT

disable ENABLE

59N #3 BLOCK INPUT

fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i14 i13 i12

59N #3 RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

9 to 23 must be set through
IPScom®.

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (3 of 18)

A–12
 Appendix – A
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
CURRENT_RELAY

46DT NEG SEQ CURRENT DEF 50 #2 INST OVERCURRENT

disable ENABLE disable enable

46DT BLOCK INPUT 50 #2 BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

46DT RELAY OUTPUT 50 #2 RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15 o19 o18 o17 o16 o15
o23 o22 o21 o20 o23 o22 o21 o20

46IT NEG SEQ CURRENT INV 50/27 INADVERTANT ENRGNG

disable ENABLE disable ENABLE

46IT BLOCK INPUT 50/27 BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

46IT RELAY OUTPUT 50/27 RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15 o19 o18 o17 o16 o15
o23 o22 o21 o20 o23 o22 o21 o20

50BF BREAKER FAILURE

50 #1 INST OVERCURRENT
disable ENABLE
disable ENABLE
50BF BLOCK INPUT
50 #1 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i11 i10 i9 i8 i7
i14 i13 i12
i14 i13 i12
50BF RELAY OUTPUT
50 #1 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o19 o18 o17 o16 o15
o23 o22 o21 o20
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

9 to 23 must be set through Q NOTE: Unpurchased or unavailable func-
IPScom®. tions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (4 of 18)

A–13
M-3425A Instruction Book
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
CURRENT_RELAY
50DT#1 DEF TIME OVERCURR
disable ENABLE 51N NTRL OVERCURRNT INV
disable ENABLE
50DT#1 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1 51N BLOCK INPUT
i11 i10 i9 i8 i7 fl i6 i5 i4 i3 i2 i1
i14 i13 i12 i11 i10 i9 i8 i7
i14 i13 i12
50DT#1 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1 51N RELAY OUTPUT
o14 o13 o12 o11 o10 o9 o8 o7 o6 o5 o4 o3 o2 o1
o19 o18 o17 o16 o15 o14 o13 o12 o11 o10 o9
o23 o22 o21 o20 o19 o18 o17 o16 o15
o23 o22 o21 o20

50DT#2 DEF TIME OVERCURR

disable ENABLE 49#1 STATOR OVERLOAD
disable ENABLE
50DT#2 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1 49#1 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i11 i10 i9 i8 i7
i14 i13 i12
i14 i13 i12
50DT#2 RELAY OUTPUT
49#1 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o19 o18 o17 o16 o15
o23 o22 o21 o20
o23 o22 o21 o20

50N NTRL INST OVERCURRNT

49#2 STATOR OVERLOAD
disable ENABLE
disable ENABLE
50N BLOCK INPUT 49#2 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

50N RELAY OUTPUT 49#2 RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15 o19 o18 o17 o16 o15
o23 o22 o21 o20 o23 o22 o21 o20

Q NOTE: Unpurchased or unavailable func- Inputs 7 to 14 and Outputs

tions will not be visible within the menus. 9 to 23 must be set through
IPScom®.

Figure A-3 Functional Configuration Record Form (5 of 18)

A–14
 Appendix – A
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
CURRENT_RELAY

51V OVERCURRENT INV 87GD GND DIFFERENTIAL

disable ENABLE disable ENABLE

51V BLOCK INPUT 87GD BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

51V RELAY OUTPUT 87GD RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15 o19 o18 o17 o16 o15
o23 o22 o21 o20 o23 o22 o21 o20

87 #1 DIFF CURRENT 67NDT RES DIR OVERCURR

disable ENABLE disable ENABLE

87 #1 BLOCK INPUT 67NDT BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

87 #1 RELAY OUTPUT 67NDT RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15 o19 o18 o17 o16 o15
o23 o22 o21 o20 o23 o22 o21 o20

87 #2 DIFF CURRENT 67NIT RES DIR OVERCURR

disable ENABLE disable ENABLE

87 #2 BLOCK INPUT 67NIT BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

87 #2 RELAY OUTPUT 67NIT RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15 o19 o18 o17 o16 o15
o23 o22 o21 o20 o23 o22 o21 o20

Inputs 7 to 14 and Outputs

9 to 23 must be set through
Q NOTE: Unpurchased or unavailable func-
IPScom®.
tions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (6 of 18)

A–15
M-3425A Instruction Book
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
FREQUENCY_RELAY 81 #4 FREQUENCY
disable ENABLE
81 #1 FREQUENCY
81 #4 BLOCK INPUT
disable ENABLE
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
81 #1 BLOCK INPUT
i14 i13 i12
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
81 #4 RELAY OUTPUT
i14 i13 i12
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
81 #1 RELAY OUTPUT
o19 o18 o17 o16 o15
o8 o7 o6 o5 o4 o3 o2 o1
o23 o22 o21 o20
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20
81R #1 RATE OF CHNG FREQ
disable ENABLE
81 #2 FREQUENCY
81R #1 BLOCK INPUT
disable ENABLE
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
81 #2 BLOCK INPUT
i14 i13 i12
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
81R #1 RELAY OUTPUT
i14 i13 i12
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
81 #2 RELAY OUTPUT
o19 o18 o17 o16 o15
o8 o7 o6 o5 o4 o3 o2 o1
o23 o22 o21 o20
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20
81R #2 RATE OF CHNG FREQ
disable ENABLE
81 #3 FREQUENCY
81R #2 BLOCK INPUT
disable ENABLE
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
81 #3 BLOCK INPUT
i14 i13 i12
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
81R #2 RELAY OUTPUT
i14 i13 i12
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
81 #3 RELAY OUTPUT
o19 o18 o17 o16 o15
o8 o7 o6 o5 o4 o3 o2 o1
o23 o22 o21 o20
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

Q NOTE: Unpurchased or unavailable func- 9 to 23 must be set through
tions will not be visible within the menus. IPScom®.

Figure A-3 Functional Configuration Record Form (7 of 18)

A–16
 Appendix – A
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
FREQUENCY_RELAY
81A #4 FREQ ACCUMULATOR
81A #1 FREQ ACCUMULATOR disable ENABLE
disable ENABLE
81A #4 BLOCK INPUT
81A #1 BLOCK INPUT fl i6 i5 i4 i3 i2 i1
fl i6 i5 i4 i3 i2 i1 i11 i10 i9 i8 i7
i11 i10 i9 i8 i7 i14 i13 i12
i14 i13 i12
81A #4 RELAY OUTPUT
81A #1 RELAY OUTPUT o8 o7 o6 o5 o4 o3 o2 o1
o8 o7 o6 o5 o4 o3 o2 o1 o14 o13 o12 o11 o10 o9
o14 o13 o12 o11 o10 o9 o19 o18 o17 o16 o15
o19 o18 o17 o16 o15 o23 o22 o21 o20
o23 o22 o21 o20
81A #5 FREQ ACCUMULATOR
81A #2 FREQ ACCUMULATOR disable ENABLE
disable ENABLE
81A #5 BLOCK INPUT
81A #2 BLOCK INPUT fl i6 i5 i4 i3 i2 i1
fl i6 i5 i4 i3 i2 i1 i11 i10 i9 i8 i7
i11 i10 i9 i8 i7 i14 i13 i12
i14 i13 i12
81A #5 RELAY OUTPUT
81A #2 RELAY OUTPUT o8 o7 o6 o5 o4 o3 o2 o1
o8 o7 o6 o5 o4 o3 o2 o1 o14 o13 o12 o11 o10 o9
o14 o13 o12 o11 o10 o9 o19 o18 o17 o16 o15
o19 o18 o17 o16 o15 o23 o22 o21 o20
o23 o22 o21 o20
81A #6 FREQ ACCUMULATOR
81A #3 FREQ ACCUMULATOR disable ENABLE
disable ENABLE
81A #6 BLOCK INPUT
81A #3 BLOCK INPUT fl i6 i5 i4 i3 i2 i1
fl i6 i5 i4 i3 i2 i1 i11 i10 i9 i8 i7
i11 i10 i9 i8 i7 i14 i13 i12
i14 i13 i12
81A #6 RELAY OUTPUT
81A #3 RELAY OUTPUT o8 o7 o6 o5 o4 o3 o2 o1
o8 o7 o6 o5 o4 o3 o2 o1 o14 o13 o12 o11 o10 o9
o14 o13 o12 o11 o10 o9 o19 o18 o17 o16 o15
o19 o18 o17 o16 o15 o23 o22 o21 o20
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

Q NOTE: Unpurchased or unavailable func- 9 to 23 must be set through
tions will not be visible within the menus. IPScom®.

Figure A-3 Functional Configuration Record Form (8 of 18)

A–17
M-3425A Instruction Book
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY 24IT VOLTS/HZ INV

VOLTS_PER_HERTZ_RELAY disable ENABLE

24DT #1 VOLTS/HZ DEF 24IT BLOCK INPUT

disable ENABLE fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
24DT #1 BLOCK INPUT i14 i13 i12
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 24IT RELAY OUTPUT
i14 i13 i12 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
24DT #1 RELAY OUTPUT o19 o18 o17 o16 o15
o8 o7 o6 o5 o4 o3 o2 o1 o23 o22 o21 o20
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20

24DT #2 VOLTS/HZ DEF

disable ENABLE

24DT #2 BLOCK INPUT

fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i14 i13 i12

24DT #2 RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

9 to 23 must be set through
IPScom®.

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (9 of 18)

A–18
 Appendix – A
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY 32 #2 DIRECTIONAL POWER

POWER_RELAY disable ENABLE

32 #1 DIRECTIONAL POWER 32 #2 BLOCK INPUT

disable ENABLE fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
32 #1 BLOCK INPUT i14 i13 i12
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 32 #2 RELAY OUTPUT
i14 i13 i12 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
32 #1 RELAY OUTPUT o19 o18 o17 o16 o15
o8 o7 o6 o5 o4 o3 o2 o1 o23 o22 o21 o20
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20 32 #3 DIRECTIONAL POWER
disable ENABLE

32 #3 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i14 i13 i12

32 #3 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

9 to 23 must be set through
IPScom®.

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (10 of 18)

A–19
M-3425A Instruction Book
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
LOSS_OF_FIELD_RELAY 40 #2 LOSS OF FIELD
disable ENABLE
40 #1 LOSS OF FIELD
disable ENABLE 40 #2 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1
40 #1 BLOCK INPUT i11 i10 i9 i8 i7
fl i6 i5 i4 i3 i2 i1 i14 i13 i12
i11 i10 i9 i8 i7
i14 i13 i12 40 #2 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
40 #1 RELAY OUTPUT o14 o13 o12 o11 o10 o9
o8 o7 o6 o5 o4 o3 o2 o1 o19 o18 o17 o16 o15
o14 o13 o12 o11 o10 o9 o23 o22 o21 o20
o19 o18 o17 o16 o15
o23 o22 o21 o20
40VC #2 LOF WITH VC
disable ENABLE
40VC #1 LOF WITH VC
disable ENABLE 40VC #2 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1
40VC #1 BLOCK INPUT i11 i10 i9 i8 i7
fl i6 i5 i4 i3 i2 i1 i14 i13 i12
i11 i10 i9 i8 i7
i14 i13 i12 40VC #2 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
40VC #1 RELAY OUTPUT o14 o13 o12 o11 o10 o9
o8 o7 o6 o5 o4 o3 o2 o1 o19 o18 o17 o16 o15
o14 o13 o12 o11 o10 o9 o23 o22 o21 o20
o19 o18 o17 o16 o15
o23 o22 o21 o20

CONFIGURE RELAY
V.T._FUSE_LOSS_RELAY

60FL V.T. FUSE LOSS

disable enable Inputs 7 to 14 and Outputs
9 to 23 must be set through
60FL BLOCK INPUT IPScom®.
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i14 i13 i12

60FL RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
Q NOTE: Unpurchased or unavailable func-
o23 o22 o21 o20
tions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (11 of 18)

A–20
 Appendix – A
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY 21 #3 PHASE DISTANCE

PHASE DISTANCE_RELAY disable ENABLE

21 #3 BLOCK INPUT
21 #1 PHASE DISTANCE
disable ENABLE fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
21 #1 BLOCK INPUT i14 i13 i12
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 21 #3 RELAY OUTPUT
i14 i13 i12 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
21 #1 RELAY OUTPUT o19 o18 o17 o16 o15
o8 o7 o6 o5 o4 o3 o2 o1 o23 o22 o21 o20
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
78 OUT OF STEP
o23 o22 o21 o20
disable ENABLE

78 BLOCK INPUT
21 #2 PHASE DISTANCE
fl i6 i5 i4 i3 i2 i1
disable ENABLE
i11 i10 i9 i8 i7
i14 i13 i12
21 #2 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1
78 RELAY OUTPUT
i11 i10 i9 i8 i7
o8 o7 o6 o5 o4 o3 o2 o1
i14 i13 i12
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
21 #2 RELAY OUTPUT
o23 o22 o21 o20
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

9 to 23 must be set through
IPScom®.

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (12 of 18)

A–21
M-3425A Instruction Book

CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
FIELD_GND_RELAY
CONFIGURE RELAY
64F#1 FIELD GROUND STATOR_GND_RELAY
disable ENABLE
64S 100% STATOR GROUND
64F #1 BLOCK INPUT disable ENABLE
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 64S BLOCK INPUT
i14 i13 i12 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
64F #1 RELAY OUTPUT i14 i13 i12
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 64S RELAY OUTPUT
o19 o18 o17 o16 o15 o8 o7 o6 o5 o4 o3 o2 o1
o23 o22 o21 o20 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20
64F #2 FIELD GROUND
disable ENABLE
CONFIGURE RELAY
64F #2 BLOCK INPUT
SYNC_CHECK_RELAY
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i14 i13 i12 25S SYNC CHECK
disable ENABLE
64F #2 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1 25S BLOCK INPUT
o14 o13 o12 o11 o10 o9 fl i6 i5 i4 i3 i2 i1
o19 o18 o17 o16 o15 i11 i10 i9 i8 i7
o23 o22 o21 o20 i14 i13 i12

25S RELAY OUTPUT

64B BRUSH LIFTOFF o8 o7 o6 o5 o4 o3 o2 o1
disable ENABLE o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
64B BLOCK INPUT o23 o22 o21 o20
fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i14 i13 i12 25D DEAD CHECK
disable ENABLE
64B RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1 25D BLOCK INPUT
o14 o13 o12 o11 o10 o9 fl i6 i5 i4 i3 i2 i1
o19 o18 o17 o16 o15 i11 i10 i9 i8 i7
o23 o22 o21 o20 i14 i13 i12

25D RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
Q NOTE: Unpurchased or unavailable func-
o23 o22 o21 o20
tions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (13 of 18)

A–22
 Appendix – A
CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY CONFIGURE RELAY

BREAKER_MON_RELAY TRIP_CKT_MON_RELAY

BM BREAKER MONITOR TCM TRIP CIRCUIT MON

disable ENABLE disable ENABLE

BM BLOCK INPUT TCM BLOCK INPUT

fl i6 i5 i4 i3 i2 i1 fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7 i11 i10 i9 i8 i7
i14 i13 i12 i14 i13 i12

BM RELAY OUTPUT TCM RELAY OUTPUT

o8 o7 o6 o5 o4 o3 o2 o1 o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9 o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15 o19 o18 o17 o16 o15
o23 o22 o21 o20 o23 o22 o21 o20

Q NOTE: Unpurchased or un-

available functions will not be
visible within the menus.

Inputs 7 to 14 and Outputs

9 to 23 must be set through
IPScom®.

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (14 of 18)

A–23
M-3425A Instruction Book

CONFIGURE RELAY
CONFIG sys stat

CONFIGURE RELAY
IPS_LOGIC_RELAY
IPSL #4 IPS LOGIC
disable ENABLE
IPSL #1 IPS LOGIC
disable ENABLE IPSL #4 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1
IPSL #1 BLOCK INPUT i11 i10 i9 i8 i7
fl i6 i5 i4 i3 i2 i1 i14 i13 i12
i11 i10 i9 i8 i7
i14 i13 i12 IPSL #4 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
IPSL #1 RELAY OUTPUT o14 o13 o12 o11 o10 o9
o8 o7 o6 o5 o4 o3 o2 o1 o19 o18 o17 o16 o15
o14 o13 o12 o11 o10 o9 o23 o22 o21 o20
o19 o18 o17 o16 o15
o23 o22 o21 o20
IPSL #5 IPS LOGIC
disable ENABLE
IPSL #2 IPS LOGIC
disable ENABLE IPSL #5 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1
IPSL #2 BLOCK INPUT i11 i10 i9 i8 i7
fl i6 i5 i4 i3 i2 i1 i14 i13 i12
i11 i10 i9 i8 i7
i14 i13 i12 IPSL #5 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
IPSL #2 RELAY OUTPUT o14 o13 o12 o11 o10 o9
o8 o7 o6 o5 o4 o3 o2 o1 o19 o18 o17 o16 o15
o14 o13 o12 o11 o10 o9 o23 o22 o21 o20
o19 o18 o17 o16 o15
o23 o22 o21 o20
IPSL #6 IPS LOGIC
disable ENABLE
IPSL #3 IPS LOGIC
disable ENABLE IPSL #6 BLOCK INPUT
fl i6 i5 i4 i3 i2 i1
IPSL #3 BLOCK INPUT i11 i10 i9 i8 i7
fl i6 i5 i4 i3 i2 i1 i14 i13 i12
i11 i10 i9 i8 i7
i14 i13 i12 IPSL #6 RELAY OUTPUT
o8 o7 o6 o5 o4 o3 o2 o1
IPSL #3 RELAY OUTPUT o14 o13 o12 o11 o10 o9
o8 o7 o6 o5 o4 o3 o2 o1 o19 o18 o17 o16 o15
o14 o13 o12 o11 o10 o9 o23 o22 o21 o20
o19 o18 o17 o16 o15
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

9 to 23 must be set through Q NOTE: Unpurchased or unavailable func-
IPScom®. tions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (15 of 18)

A–24
 Appendix – A
SETUP SYSTEM
config SYS stat

INPUT ACTIVATED PROFILES PHASE ROTATION

IN ap cpy volt curr vt d_ytx ROT mag splt

INPUT ACTIVATED PROFILES PHASE ROTATION

disable ENABLE a-c-b a-b-c

ACTIVE SETPOINT PROFILE 59/27 MAGNITUDE SELECT

in AP cpy volt curr vt d_ytx rot MAG splt

ACTIVE SETPOINT PROFILE 59/27 MAGNITUDE SELECT

________ rms dft

COPY ACTIVE PROFILE 50DT SPLIT-PHASE DIFF

in ap CPY volt curr vt d_ytx rot mag SPLT

COPY ACTIVE PROFILE 50DT SPLIT-PHASE DIFF

TO_PROFILE_1 disable enable

NOMINAL VOLTAGE PULSE RELAY

in ap cpy VOLT curr vt PLSE latch seal in

NOMINAL VOLTAGE PULSE RELAY

________ Volts o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
NOMINAL CURRENT o23 o22 o21 o20
in ap cpy volt CURR vt

NOMINAL CURRENT LATCHED OUTPUTS

________ Amps plse LATCH seal in

LATCHED OUTPUTS
V.T. CONFIGURATION o8 o7 o6 o5 o4 o3 o2 o1
in ap cpy volt curr VT o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
V.T. CONFIGURATION o23 o22 o21 o20
line_line line_ground
line_gnd_to_line_line
Inputs 7 to 14 and Outputs
9 to 23 must be set through
DELTA-Y TRANSFORM IPScom®.
D_YTX rot mag splt

DELTA-Y TRANSFORM
dis delta_ab delta_ac Q NOTE: Unpurchased or unavailable func-
tions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (16 of 18)

A–25
M-3425A Instruction Book
SETUP SYSTEM
config SYS stat

RELAY SEAL-IN TIME RELAY SEAL-IN TIME OUT12

plse latch SEAL in ________ Cycles

RELAY SEAL-IN TIME OUT1 RELAY SEAL-IN TIME OUT13

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT2 RELAY SEAL-IN TIME OUT14

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT3 RELAY SEAL-IN TIME OUT15

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT4 RELAY SEAL-IN TIME OUT16

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT5 RELAY SEAL-IN TIME OUT17

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT6 RELAY SEAL-IN TIME OUT18

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT7 RELAY SEAL-IN TIME OUT19

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT8 RELAY SEAL-IN TIME OUT20

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT9 RELAY SEAL-IN TIME OUT21

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT10 RELAY SEAL-IN TIME OUT22

________ Cycles ________ Cycles

RELAY SEAL-IN TIME OUT11 RELAY SEAL-IN TIME OUT23

________ Cycles ________ Cycles

Inputs 7 to 14 and Outputs

9 to 23 must be set through
IPScom®.

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (17 of 18)

A–26
 Appendix – A
SETUP SYSTEM
config SYS stat

ACTIVE INPUT STATE

plse latch seal IN

ACTIVE INPUT OPEN/close

fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i14 i13 i12

V.T. PHASE RATIO

VT vt_n vt_x ct ct_n

V.T. PHASE RATIO

________ :1

V.T. NEUTRAL RATIO

vt VT_N vt_x ct ct_n

V.T. NEUTRAL RATIO

________ :1

V.T. VX RATIO
vt vt_n VT_X ct ct_n

V.T. VX RATIO
________ :1

C.T. PHASE RATIO

vt vt_n vt_x CT ct_n

C.T. PHASE RATIO

________ :1

Inputs 7 to 14 and Outputs

C.T. NEUTRAL RATIO 9 to 23 must be set through
VT vt_n vt_x ct CT_N IPScom®.

C.T. NEUTRAL RATIO

________ :1

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-3 Functional Configuration Record Form (18 of 18)

A–27
M-3425A Instruction Book
VOLTAGE RELAY
VOLT curr freq v/hz

27 PHASE UNDERVOLTAGE 59 PHASE OVERVOLTAGE

PHASE_UNDER PHASE_OVER

27 #1 PICKUP 59 #1 INPUT VOLTAGE SEL

________ Volts phase_volt pos_seq_volt

27 #1 DELAY 59 #1 PICKUP
________ Cycles ________ Volts

27 #2 PICKUP 59 #1 DELAY
________ Volts ________ Cycles

27 #2 DELAY 59 #2 INPUT VOLTAGE SEL

________ Cycles phase_volt pos_seq_volt

27 #3 PICKUP 59 #2 PICKUP
________ Volts ________ Volts

27 #3 DELAY 59 #2 DELAY
________ Cycles ________ Cycles

59 #3 INPUT VOLTAGE SEL

phase_volt pos_seq_volt

59 #3 PICKUP
________ Volts

59 #3 DELAY
________ Cycles

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (1 of 15)

A–28
 VOLTAGE RELAY Appendix – A
VOLT curr freq v/hz

27TN NEUTRL UNDERVOLT 27TN #2 PICKUP

NUTRL_UNDER vx_over ________ VOLTS

27TN #1 PICKUP 27TN #2 POS SEQ VOLT BLK

________ Volts disable ENABLE

27TN #1 POS SEQ VOLT BLK 27TN #2 POS SEQ VOLT BLK
disable ENABLE ________ Volts

27TN #1 POS SEQ VOLT BLK 27TN #2 FWD POWER BLK

________ Volts disable ENABLE

27TN #1 FWD POWER BLK 27TN #2 FWD POWER BLK

disable ENABLE ________ PU

27TN #1 FWD POWER BLK 27TN #2 REV POWER BLK

________ PU disable ENABLE

27TN #1 REV POWER BLK 27TN #2 REV POWER BLK

disable ENABLE ________ PU

27TN #1 REV POWER BLK 27TN #2 LEAD VAR BLK

________ PU disable ENABLE

27TN #1 LEAD VAR BLK 27TN #2 LEAD VAR BLK

disable ENABLE ________ PU

27TN #1 LEAD VAR BLK 27TN #2 LAG VAR BLK

________ PU disable ENABLE

27TN #1 LAG VAR BLK 27TN #2 LAG VAR BLK

disable ENABLE ________ PU

27TN #1 LAG VAR BLK 27TN #2 LEAD PF BLK

________ PU disable ENABLE
27TN #1 LEAD PF BLK 27TN #2 LEAD PF BLK
disable ENABLE ________ LEAD
27TN #1 LEAD PF BLK 27TN #2 LAG PF BLK
________ LEAD disable ENABLE
27TN #1 LAG PF BLK 27TN #2 LAG PF BLK
disable ENABLE ________ LAG
27TN #1 LAG PF BLK 27TN #2 BAND FWD PWR BLK
________ LAG disable ENABLE
27TN #1 BAND FWD PWR BLK 27TN #2 LO B FWD PWR BLK
disable ENABLE ________ PU
27TN #1 LO B FWD PWR BLK 27TN #2 HI B FWD PWR BLK
________ PU ________ PU
27TN #1 HI B FWD PWR BLK 27TN #2 DELAY
________ PU ________ CYCLES
27TN #1 DELAY
________ CYCLES

Figure A-4 Setpoint & Timing Record Form (2 of 15)

A–29
M-3425A Instruction Book
VOLTAGE RELAY
VOLT curr freq v/hz

59X OVERVOLTAGE 59D VOLT DIFF 3RD HAR

nutrl_under VX_OVER nutrl_over VOL_DIFF

59X #1 PICKUP 59D RATIO

________ Volts ________

59X #1 DELAY 59D LINE SIDE VOLTAGE

________ Cycles 3vo vx

59X #2 PICKUP 59D POS SEQ VOLT BLK

________ Volts disable ENABLE

59X #2 DELAY 59D POS SEQ VOLT BLK

________ Cycles ________ VOLTS

59D DELAY
59N NEUTRAL OVERVOLTAGE ________ Cycles
NUTRL_OVER vol_diff

59N #1 PICKUP
________ Volts

59N #1 DELAY
________ Cycles

59N #2 PICKUP
________ Volts

59N #2 DELAY
________ Cycles

59N #3 PICKUP
________ Volts

59N #3 DELAY
________ Cycles

59N 20HZ INJECTION MODE

disable ENABLE

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (3 of 15)

A–30
 Appendix – A
CURRENT RELAY
volt CURR freq v/hz

46 NEG SEQ OVERCURRENT 50/27 INADVERTANT ENRGNG

NEG_SEQ inst INADVTNT_ENG brk_fail

46DT PICKUP 50/27 PICKUP

________ % ________ Amps

46DT DELAY 50/27 VOLTAGE CONTROL

________ Cycles ________ Volts

46IT PICKUP 50/27 PICKUP DELAY

________ % ________ Cycles

46IT MAX DELAY 50/27 DROPOUT DELAY

________ Cycles ________ Cycles

46IT RESET TIME

________ Seconds 50BF BREAKER FAILURE
inadvtnt_eng BRK_FAIL
46IT TIME DIAL
________ 50BF PHASE ELEMENT
disable ENABLE

50 INST OVERCURRENT 50BF PICKUP PHASE

neg_seq INST ________ Amps

50 #1 PICKUP 50BF NEUTRAL ELEMENT

________ Amps disable ENABLE

50 #1 DELAY 50BF PICKUP NEUTRAL

________ Cycles ________ Amps

50 #2 PICKUP 50BF INPUT INITIATE

________ Amps fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
50 #2 DELAY i14 i13 i12
________ Cycles
50BF OUTPUT INITIATE
o8 o7 o6 o5 o4 o3 o2 o1
o14 o13 o12 o11 o10 o9
o19 o18 o17 o16 o15
o23 o22 o21 o20

Inputs 7 to 14 and Outputs

9 to 23 must be set through 50BF DELAY
IPScom®. ________ Cycles

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (4 of 15)

A–31
M-3425A Instruction Book
CURRENT RELAY
volt CURR freq v/hz

50DT DEF TIME OVERCURR 51N INV TIME OVERCURRENT

P_INST n_inst n_inv p_inst n_inst N_INV

50DT #1 PICKUP PHASE A 51N PICKUP

________ Amps ________ Amps

50DT #1 PICKUP PHASE B 51N CURVE

________ Amps bedef beinv bevinv beeinv
ieci iecvi iecei ieclti
50DT #1 PICKUP PHASE C minv vinv einv
________ Amps
51N TIME DIAL
50DT #1 DELAY ________
________ Cycles

50DT #2 PICKUP PHASE A 49 STATOR OVERLOAD

________ Amps ST_OVL v_inv diff

50DT #2 PICKUP PHASE B 49#1 TIME CONSTANT

________ Amps ________ Min

50DT #2 PICKUP PHASE C 49 #1 MAX OVERLOAD CURR

________ Amps ________ Amps

50DT #2 DELAY 49 #2 TIME CONSTANT

________ Cycles ________ Min

49 #2 MAX OVERLOAD CURR

50N INST OVERCURRENT ________ Amps
p_inst N_INST n_inv

50N PICKUP 51V INV TIME OVERCURRENT

________ Amps st_ovl V_INV diff

50N DELAY 51V PICKUP

________ Cycles ________ Amps

51V CURVE
bedef beinv bevinv beeinv
ieci iecvi iecei ieclti
minv vinv einv

51V TIME DIAL

________

51V VOLTAGE CONTROL

disable V_CNTRL v_rstrnt

Q NOTE: Unpurchased or unavailable func- 51V VOLTAGE CONTROL

tions will not be visible within the menus. ________ Volts

Figure A-4 Setpoint & Timing Record Form (5 of 15)

A–32
 Appendix – A
CURRENT RELAY
volt CURR freq v/hz

87 DIFFERENTIAL OVERCURR 67N RES DIR OVERCURR

st_ovl v_inv DIFF g_diff RES_DIR_OC

87 #1 PICKUP 67NDT PICKUP

________ Amps ________ Amps

87 #1 SLOPE 67NDT DIR ELEMENT

________ % disable ENABLE

87 #1 DELAY 67NDT DELAY

________ Cycles ________ Cycles

87 #2 PICKUP 67NIT PICKUP

________ Amps ________ Amps

87 #2 SLOPE 67NIT DIR ELEMENT

________ % disable ENABLE

87 #2 DELAY 67NIT CURVE

________ Cycles bedef beinv bevinv beeinv
ieci iecvi iecei ieclti
87 PHASE CT CORRECTION minv vinv einv
________
67NIT TIME DIAL
________
87GD GND DIFF OVERCURR
G_DIFF res_dir_oc 67N MAX SENSITIVITY ANGL
________ Degrees
87GD PICKUP
________ Amps 67N OPERATING CURRENT
3io in
87GD DELAY
________ Cycles 67N POLARIZING QUANTITY
3vo vn vx
87GD C.T. RATIO CORRECT
________

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (6 of 15)

A–33
M-3425A Instruction Book

FREQUENCY RELAY
volt curr FREQ v/hz

81 FREQUENCY 81A FREQUENCY ACCUM.

FREQ rcfreq freq_acc freq rcfreq FREQ_ACC

81 #1 PICKUP 81A SET FREQUENCY ACC.

________ Hz SET reset

81 #1 DELAY 81A #1 HIGH BAND PICKUP

________ Cycles ________ Hz
81 #2 PICKUP 81A #1 LOW BAND PICKUP
________ Hz ________ Hz
81 #2 DELAY 81 #1 DELAY
________ Cycles ________ Cycles
81 #3 PICKUP
81A #2 LOW BAND PICKUP
________ Hz
________ Hz
81 #3 DELAY
________ Cycles 81 #2 DELAY
________ Cycles
81 #4 PICKUP
________ Hz 81A #3 LOW BAND PICKUP
________ Hz
81 #4 DELAY
________ Cycles 81 #3 DELAY
________ Cycles

81R RATE OF CHANGE FREQ 81A #4 LOW BAND PICKUP

freq RCFREQ freq_acc ________ Hz

81R #1 PICKUP 81 #4 DELAY

________ Hz/s ________ Cycles

81R #1 DELAY 81A #5 LOW BAND PICKUP

________ Cycles ________ Hz

81R #2 PICKUP 81 #5 DELAY

________ Hz/s ________ Cycles

81R #2 DELAY 81A #6 LOW BAND PICKUP

________ Cycles ________ Hz

81R NEG SEG VOLT INHIBIT 81 #6 DELAY

________ % ________ Cycles

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (7 of 15)

A–34
 Appendix – A
FREQUENCY RELAY
volt curr FREQ v/hz

81A RESET ACCUMULATORS

set RESET

81A #1 ACCUMULATOR RESET

yes no

81A #2 ACCUMULATOR RESET

yes no

81A #3 ACCUMULATOR RESET

yes no

81A #4 ACCUMULATOR RESET

yes no

81A #5 ACCUMULATOR RESET

yes no

81A #6 ACCUMULATOR RESET

yes no

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (8 of 15)

A–35
M-3425A Instruction Book
VOLTS PER HERTZ RELAY
volt curr freq V/HZ

24 DEF TIME VOLTS/HERTZ 24 INV TIME VOLTS/HERTZ

DEF_V/HZ inv_v/hz def_v/hz INV_V/HZ

24DT #1 PICKUP 24IT #1 PICKUP

________ % ________ %

24DT #1 DELAY 24IT CURVE

________ Cycles crv#1 crv#2 crv#3 crv#4

24DT #2 PICKUP 24IT TIME DIAL

________ % ________

24DT #2 DELAY 24IT RESET RATE

________ Cycles ________ Seconds

POWER RELAY
PWR lof fuse dist

32 DIRECTIONAL POWER 32 #3 PICKUP

PWR ________ PU

32 #1 PICKUP 32 #3 DELAY
________ PU ________ Cycles

32 #1 DELAY 32 # 3 TARGET LED

________ Cycles disable ENABLE

32 # 1 TARGET LED 32 #3 UNDER/OVER POWER

disable enable over under

32 #1 UNDER/OVER POWER 32#3 DIR POWER SENSING

over under real reactive

32 #2 PICKUP
________ PU

32 #2 DELAY
________ Cycles

32 # 2 TARGET LED
disable ENABLE
Q NOTE: Unpurchased or unavailable func-
32 #2 UNDER/OVER POWER tions will not be visible within the menus.
over under

Figure A-4 Setpoint & Timing Record Form (9 of 15)

A–36
 Appendix – A
LOSS OF FIELD RELAY
pwr LOF fuse dist

40 LOSS OF FIELD
LOF

40 #1 DIAMETER 40 #2 DELAY
________ Ohms ________ Cycles

40 #1 OFFSET 40VC #2 DELAY WITH VC

________ Ohms ________ Cycles

40 #1 DELAY 40 VOLTAGE CONTROL

________ Cycles ________ Volts
40VC #1 DELAY WITH VC 40 DIRECTIONAL ELEMENT
________ Cycles
________ Degrees
40 #2 DIAMETER
________ Ohms

40 #2 OFFSET
________ Ohms

V.T. FUSE LOSS RELAY

pwr lof FUSE dist

60FL V.T. FUSE LOSS

FUSE

60FL INPUT INITIATE

fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
i14 i13 i12

IPSCOM INPUT INIT Inputs 7 to 14 and Outputs

9 to 23 must be set through
IPScom®.
60FL 3 PHASE DETECT
disable enable

60FL DELAY
________ Cycles

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (10 of 15)

A–37
M-3425A Instruction Book
PHASE DISTANCE RELAY
pwr lof fuse DIST

21 PHASE DISTANCE
DIST ostp 21#2 OC SUPERVISION
disable ENABLE
21#1 DIAMETER
________ Ohms 21#2 OC SUPERVISION
________ Amps
21#1 OFFSET
________ Ohms 21#2 OUT OF STEP BLOCK
disable enable
21#1 IMPEDANCE ANGLE
________ Degrees 21#2 DELAY
________ Cycles
21#1 LOAD ENCROACHMENT
disable ENABLE 21#3 DIAMETER
________ Ohms
21#1 LOAD ENCR ANGLE
________ Degrees 21#3 OFFSET
________ Ohms
21#1 LOAD ENCR R REACH
________ Ohms 21#3 IMPEDANCE ANGLE
________ Degrees
21#1 OC SUPERVISION
disable ENABLE 21#3 LOAD ENCROACHMENT
disable ENABLE
21#1 OC SUPERVISION
________ Amps 21#3 LOAD ENCR ANGLE
________ Degrees
21#1 OUT OF STEP BLOCK
disable enable 21#3 LOAD ENCR R REACH
________ Ohms
21#1 DELAY
________ Cycles 21#3 OC SUPERVISION
disable ENABLE
21#2 DIAMETER
________ Ohms 21#3 OC SUPERVISION
________ Amps
21#2 OFFSET
________ Ohms 21#3 DELAY
________ Cycles
21#2 IMPEDANCE ANGLE
________ Degrees 21#3 OUT OF STEP DELAY
________ Cycles
21#2 LOAD ENCROACHMENT
disable ENABLE

21#2 LOAD ENCR ANGLE

________ Degrees

21#2 LOAD ENCR R REACH

________ Ohms

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (11 of 15)

A–38
 Appendix – A
PHASE DISTANCE RELAY
pwr lof fuse DIST

78 OUT OF STEP
dist OSTP

78 DIAMETER 78 TRIP ON MHO EXIT

________ Ohms disable ENABLE

78 OFFSET 78 POLE SLIP COUNT

________ Ohms ________ Slips

78 BLINDER IMPEDANCE 78 POLE SLIP RESET TIME

________ Ohms ________ Cycles

78 IMPEDANCE ANGLE
________ Degrees

78 DELAY
________ CYCLES

FIELD GROUND RELAY

FIELD stator sync

64B/F FIELD GROUND

FIELD

64F #1 PICKUP 64B PICKUP

________ kOhm ________ mV

64F #1 DELAY 64B DELAY

________ Cycles ________ Cycles

64F # 2 PICKUP 64B/F FREQUENCY

________ kOhm ________ Hz

64F # 2 DELAY
________ Cycles

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (12 of 15)

A–39
M-3425A Instruction Book

STATOR GROUND RELAY

field STATOR sync

64S 100% STATOR GROUND

STATOR

64S PICKUP
mAmps

64S VOLT INHIBIT

disable ENABLE
Q NOTE: Unpurchased or un-
available functions will not be
64S VOLT INHIBIT
visible within the menus.
________ Volts

64S DELAY
________ Cycles

SYNC CHECK RELAY

field stator SYNC

25S SYNC CHECK

SYNC dead

25S PHASE LIMIT 25D DEAD VOLT

________ Degrees sync DEAD

25S UPPER VOLT LIMIT 25D DEAD VOLT LIMIT

________ Volts ________ VOLTS

25S LOWER VOLT LIMIT 25D DEAD V1 HOT VX

________ Volts disable ENABLE

25S SYNC CHECK DELAY 25D DEAD VX HOT V1

________ Cycles disable ENABLE

25S DELTA VOLT 25D DEAD V1 & VX

disable ENABLE disable ENABLE

25S DELTA VOLT LIMIT 25D DEAD INPUT ENABLE

________ Volts fl i6 i5 i4 i3 i2 i1
i11 i10 i9 i8 i7
25S DELTA FREQUENCY i14 i13 i12
disable ENABLE
25D DEAD DELAY
25S DELTA FREQ LIMIT ________ Cycles
________ Hz

25S SYNC-CHECK PHASE Inputs 7 to 14 and Outputs

ab bc ca 9 to 23 must be set through
IPScom®.

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (13 of 15)

A–40
 Appendix – A
BREAKER MONITOR
BRKR trpckt ipslog

SET BREAKER MONITORING PRESET ACCUMULATORS

BRKR prst clr brkr PRST clr

BM PICKUP ACC. PHASE A SET

________ kA-cycles PH_A ph_b ph_c

BM INPUT INITIATE BRKR. ACCUMULATOR

fl i6 i5 i4 i3 i2 i1 ________ kA-cycles
i11 i10 i9 i8 i7
i14 i13 i12 ACC. PHASE B SET
ph_A PH_B ph_c
BM OUTPUT INITIATE
o8 o7 o6 o5 o4 o3 o2 o1 BRKR. ACCUMULATOR
o14 o13 o12 o11 o10 o9 ________ kA-cycles
o19 o18 o17 o16 o15
o23 o22 o21 o20 ACC. PHASE C SET
ph_A ph_b PH_C
BM DELAY
________ Cycles BRKR. ACCUMULATOR
________ kA-cycles
BM TIMING METHOD
it i2t
CLEAR ACCUMULATORS
brkr prst CLR

ACC. PHASE A CLEAR

PH_A ph_b ph_c

Inputs 7 to 14 and Outputs ACC. PHASE B CLEAR

9 to 23 must be set through ph_a PH_B ph_c
IPScom®.
ACC. PHASE C CLEAR
ph_a ph_b PH_C

TRIP CIRCUIT MONITOR

brkr TRPCKT ipslog

TRIP CIRCUIT MONITOR

TRIPCKT

TCM DELAY
________ Cycles

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (14 of 15)

A–41
M-3425A Instruction Book

IPS LOGIC
brkr trpckt IPSLOG

IPS LOGIC
USE IPSCOM TO CONFIGURE

Q NOTE: Unpurchased or unavailable functions will not be visible within the menus.

Figure A-4 Setpoint & Timing Record Form (15 of 15)

A–42
 Communications: Appendix – B

B Appendix B–Communications

The M-3425A Generator Protection Relay For detailed information on IPScom communications,
incorporates three serial ports and an optional RJ45 refer to Chapter 4, Remote Operation.
Ethernet port for intelligent, digital communication
with external devices. Equipment such as RTU's, Serial Ports
data concentrators, modems, or computers can be
interfaced for direct, on-line, real time data acquisition The relay has both front and rear panel RS-232 ports
and control. Generally, all data available to the and a rear RS-485 port. The front and rear panel
operator through the front panel of the relay with the RS-232 ports are 9-pin (DB9S) connector configured
optional M-3931 Human-Machine Interface module as DTE (Data Terminal Equipment) per the EIA-
is accessible remotely through the BECO 2200 or 232D standard. Signals are defined in Table B-1,
MODBUS data exchange protocol. These protocol Communication Port Signals .
documents and the database-specific protocol The 2-wire RS-485 port is assigned to the rear panel
document are available from the factory or from our terminal block pins 3 (–) and 4 (+).
website at www.beckwithelectric.com.
Each communication port may be configured to
The M-3820D IPScom® Communication Software operate at any of the standard baud rates (300,
package has been supplied for communication to 600, 1200, 2400, 4800, and 9600). The RS-485
any IBM compatible computer running under port shares the same baud rate with COM 2 (for
Microsoft® Windows 95 or higher. COM1 see Section 5.4, Circuit Board Switches and
The communication protocols implement serial, byte Jumpers).
oriented, asynchronous communication and can be A null modem cable is also shown in Figure B-1, Null
used to fulfill the following communications functions: Modem Cable: M-0423, if direct connection to a PC
• Real time monitoring of line status. (personal computer) is desired.
• Interrogation and modification of setpoints.
• Downloading of recorded oscillograph data. Optional Ethernet Port
• Reconfiguration of relay functions. The M-3425A, when equipped with the optional
Ethernet port can be accessed from a local network.
■ NOTE: The following restrictions apply for When the ethernet port is enabled, the COM2 serial
MODBUS protocol use: port (RS-232) is unavailable for communications.
The demodulated IRIG-B may still be used via the
1. MODBUS protocol is not supported on COM2 Port when ethernet is enabled. Although the
COM1.
ethernet connection speed is faster than the RS-232
2. Parity is supported on COM2 and COM3; port (can be up to 10 Mbps), the ethernet module
valid selections are 8,N,2; 8,O,1; 8,E,1; connects internally through the COM2 serial
8,N,1; 8,O,2 or 8,E,2. connection and is therefore limited to connection
3. ASCII mode is not supported (RTU only). speeds up to 9600 bps.
4. Standard baud rates from 300 to 9600 Either port COM2 (Ethernet) or COM3 may be used
are supported. to remotely set and interrogate the relay using a
5. Only the following MODBUS commands local area network, modem or other direct serial
are supported: connection.
a. read holding register (function 03)
b. read input register (function 04)
c. force single coil (function 05)
d. preset single register (function 06)

B–1
M-3425A Instruction Book

Signal COM1 COM2

RX Receive Data Pin 2 Pin 2
TX Transmit Data Pin 3 Pin 3
RTS Request to Send Pin 7 Pin 7
CTS Clear to Send Pin 8
DTR Data Terminal Ready Pin 4 Pin 4
DCD Data Carrier Detect Pin 1*
GND Signal Ground Pin 5 Pin 5
+15 V Pin 1*
-15 V Pin 9*
TTL IRIG-B (+) Pin 6*
* Optional: See Section 5.5, Circuit Board Switches and
Jumpers, &15V (&15%) @100 mA maximum.

Table B-1 Communication Port Signals

■ NOTE: Also see Tables 5-1, 5-2 and Figure 5-12.

M-3425A
COM1/COM2 PC
DB9P DB9S
1 1 DCD
RX 2 2 RX
TX 3 3 TX

4 4 DTR
SGND 5 5 SGND

6 6 DSR

RTS 7 7 RTS
CTS 8 8 CTS
9 9 RI

Figure B-1 Null Modem Cable: M-0423

B–2
 Communications: Appendix – B

PC Master

Echo Cancel On

25 pin or
9-25 pin Straight-Through Cable

DYMEC Fiber Optic

Link / Repeater
DCE
DTE

REP
OFF

T R

FOC FOC

FOC FOC

R T R T R T

DCE DCE DCE

DTE DTE DTE

REP REP REP

OFF OFF OFF

Slave #1 Slave #2 Slave #3

Address 1 Address 2 Address 3

RS-232 RS-232 RS-232

9-25 pin "Straight-Through" Cables

Figure B-2 RS-232 Fiber Optic Network

B–3
M-3425A Instruction Book

RS-485 2-Wire Network

Slave #1 Slave #2 Slave #3
Address 6 Address 8 Address 1

- + - +
PC Master

B(-) 200 Ω*
A(+)

Twisted
RS-232 to RS-485 2-wire
converter or RS-485 PC Card

▲ CAUTION: Due to the possibility of ground potential difference between units, all units should be mounted
in the same rack. If this is not possible, fiber optics with the appropriate converters should be used for
isolation.
■ NOTE: Each address on the network must be unique. Only the last physical slave on the network should
have the termination resistor installed. This may be completed externally or using a jumper internal
to the unit. See Section 5.5, Circuit Board Switches and Jumpers.

Figure B-3 RS-485 Network

COM2
IRIG-B Pin 6
TTL Source
Pin 5

Figure B-4 COM Pinout for Demodulated TTL Level Signal

B–4
 Self-Test Error Codes Appendix – C

C Appendix C–Self-test Error Codes

1 31 Unrecognized INT1 code

2 Battery backed RAM test fail 32 Values update watchdog fail
3 EEPROM write power-up fail 33 Abort Error
4 EEPROM read back power-up fail 34 Restart Error
5 Dual port RAM test fail 35 Interrupt Error
6 EEPROM write calibration checksum fail 36 Trap Error
7 EEPROM write setpoint checksum fail 37 Calibration running check fail
loss of power
38 Ethernet Board not running (Warning)
8 EEPROM write setpoint checksum fail
loss of battery backed RAM 39 Not used

9 DMA checksum/physical block fail 40 Interrupt noise INT2

10 Oscillograph Memory Test fail 41 Interrupt noise INT1

11 DSP external program RAM fail 42 Not used

12 DSP A/D convert fail 43 Not used

13 DSP ground channel fail 44 Oscillograph buffer overflow

14 DSP reference channel fail 45 Oscillograph buffer underflow

15 DSP PGA gain fail 46 Failure of DSP to calculate calibration

phasors
16 DSP DSP<-> HOST interrupt 1 fail
47 Unable to calibrate input (gain)
17 DSP DSP -> HOST interrupt 2 set fail
48 Unable to calibrate input (phase)
18 DSP DSP -> HOST interrupt 2 reset fail
49 Not used
19 DSP program load fail
50 Stack Overflow
20 DSP not running run mode code
51 Setpoint Write Overflow
21 DSP not running primary boot code
52 Field Ground Error
22 DSP DPRAM pattern test fail
23 EEPROM write verify error
26 WARNING calibration checksum mis-
match warning
27 WARNING setpoint checksum mismatch
warning
28 WARNING low battery (BBRAM) warning
29 Supply/mux PGA running test fail
30 External DSP RAM test fail

Table C-1 Self-Test Error Codes

C–1
M-3425A Instruction Book

Error Code De s cription

An incorrect pass word supplied to the control will result in this

Comm Channel Lock
message.

This message indicates that the control is being operated locally

Control in Local Mode
and serial communication is suspended.

This error results if there are problems with the communication

Echo Timeout
link or if the echo cancel function is used incorrectly.

Invalid Data This error results if incorrect or out- of- range data is entered.

This message is displayed when attempting to communicate with a

Invalid ID
device other than the M- 3425 series.

This error results if an incompatible version of IPScom software is

Invalid Number of
used. This is a communication protocol error. Contact a Beckwith
Points
Electric Co. factory representative.

This error results if an incompatible version of IPScom software is

Invalid Point Number used. This is a communication protocol error. Contact a Beckwith
Electric Co. factory representative.

This error results if there are problems with the communication

Read Invalid Checksum
link or if the echo cancel function is used incorrectly.

This error results when communication with the control is lost

Read Packet Timeout
while attempting to read data to the control.

This error results when communication with the control is lost

Response Timeout
while attempting to read data from the control.

Unknown System Error This error could be caused by a malfunction of the control.

User Cancel This message displays when the escape (ESC) key is pressed.

This error results if there are problems with the communication

Write Invalid Checksum
link or if the echo cancel function is used incorrectly.

This error results when communication with the control is lost

Write Packet Timeout
while attempting to write data to the control.

Table C-2 IPScom® Error Messages

C–2
 Inverse Time Curves: Appendix– D

D Appendix D – Inverse Time Curves

This Appendix contains two sets of Inverse Time Curve Families. The first set is used for Volts per Hertz
functions (Figures D-1 through D-4), and the second set is for the M-3425A functions which utilize the Inverse
Time Overcurrent curves (Figures D-5 through D-12).

Q NOTE: Table D-1A and D-1B on pages D–6 and D–7 contains a list of the data that characterizes Definite
Time, Inverse Time, Very Inverse Time, and Extremely Inverse Time Overcurrent Curves.

D–1
M-3425A Instruction Book

10000.00
I I
1
1
1

, 1 I 1
1 1
1 1
1 I !
I

1000.00 \ I I I I 1
I
I
1 I I i
1 1 ! 1 1 I
~\
\\ 1 I i I ! 1
I I
\i%\
1\\\ 1
I 1

100.00
\\\~
\i\I\~ 1 I I 1 I I I
! I
I I

\ \ 1
I I
\\ ,\.
.\. : :
:\\ \ 1\\ .'\.\.,
\ ,\., '\. I I II i I I
I I

III
\ \ 1 \\I~>~
.~ ~ I I i II I
~c:::I'"
.!!

~"
\\ \ '\~
\ 1\1\ ~~I
~~ ..
i
I
• ! I I
I
1
\
I I1 Ii I

I
I
1

.,
'"
E
10.00

\ 1
,
I
'-
i
I
I
1
I
I
I
I
1
':l. G ~
'- -...... '
i= \ I".,
~, " "-.
~~I
I

\.
"
........ ':h.. ......... '-...
.003* K 1\\
\
\ \.,
\. '" "-
",I ~ '-...~ -----.
~N~
--...
I
I I I
1

((l~)-lJ
= (C~)-lr
I~
\ \.,'\. ~ I'~
........ i~
~
f':'c..- ~
. . . . . 1'--r--..... I--- ~ t-- I
\

----
1
I I

\ '\.
1"'~:~ I---- ~~ -----
~~
t=
t \.,

"'" ""
---I-- ---1
---- --- ---
-.......1'-........ :---
:-.................. :----i ,====1--
,
1\
I'~
........ Ii'--..' ......... 1-"""--'" I 1--->-- _I--- t-- K
1.00
I
---- 100
'00

---
I
I
80
'- I 60
1":-, '- -......
1"-. 1 1 r--
--... 1
1 \. I f'-...
~I ~I
f"--.-
-----.
I~
--- --- -r----
1
40
:~ 1---_..
- ---
I
! .'\
\.,j I I
i'---
~ 1 I
I r--
l~ ~I
~I
~ i
~
I-- r--. i
!

rtt+:-I
I '-... I 20
-----.
~
0.10
"" ~.
~ 1 1 I~ ~r--.
I-- I--- ---- r--- ---
I--
10
'0
I
i I
1
1 I I I I-......
,
1

-----.
I I
I I
1
I

--
1
~ I 1
,i I
I 1 1 !

I I I~--- I
II II r----
~ r--. I

0.01
1 I
I
I
I 1 I
--- ~
I---I--
I ---r--..
100 105 110 115 120 125 130 135 140 145 150
Percentage V/Hz

Figure D-1 Volts/Hz (24) Inverse Curve Family #1 (Inverse Square)

D–2
 Inverse Time Curves: Appendix– D

10000

~
1000 I'..
"'"
"'- "'- "'-
~ '" ~ ~ ~

100 ~ ~~~ ~~ ""

"" "" "" "" "" ~
"" ""~ ""
10
"" "" ~"""-"" ~"" ~ ~ "-"" ~"" ~ "-
~ ~ ~

'" '" ""'" ""'" '" '" ""'" '" "'"

~ ~ ~ ~ ~ ~

~~ ~~~~~~
~.

115+{25*K)-M
t=e 4.8858 "- "- "- "- "- "- "-

~
I
"" ~"" ~~~~"" ~~"" ~~"" ~~"" ~~"" ~~'" f'--~
0.1 I"" K
9
"- "- 8

'" ""'" ""'" ""'" ~'" '" -"'- ~ ~

7

0.01
~~~~~ 5

"- "- "- 3

""'" ''""
2

0.001
100 105
I
110 115 120 125
Percentage V/Hz
130 135 140 145 "" 150

Figure D-2 Volts/Hz (24) Inverse Family Curve #2

D–3
M-3425A Instruction Book

1000000

I I
100000
'" I

"- !

10000
'""" '~""
" '" 1

,
1 I
I I
E
1==
I
,
I
I ,
'{ ! , i

~ ~ ~ ~I~ ~
I
I I I I I

"" """ "" """ "" """ "

1
1000
,
, "- , , I

'" '"
:
"'- "'- "'- "'- "'-
"'- "'- "'- "'""'"
I
"'" ~ "'" ~"'" ~"'" ~
1

'~ ~~I~~
I I
I
"" "" I"'""" "" "" """ "" "
100 I I 1 I I

:I , ,
I
,
"'- "'- "'"'-" "'- "'"'-" "'"'"- """"'"
"'- "'- "'"
"'- 1 i
"'" ~ ~~ "'" ~ ~ ~""~~I
~ I I
g:~
'S
c
10 I
~""
'" '" "" '""" '" 1 I I
, ,
:i
:E ,
'I 'I "l- ,

I"'"'-" "'- "'"'-" "'-"'" '"'-' ' I"'"'-" ""'"'"- "'"-I"'""'- ~

I
.::.,
.5 I I "'- I~
"'- i I

'"" "
1 1

"~ ~ ~ ~ ~ "', " ""'k ""'"

GO
E
i=
j:: 1 I "'" "'- '\ I , 1 I I
, ,
1135+(25*
1135+(2.5* K)- M
,'-If , , , ,
, ,

t=e 3.04 I
i
.r-.. r-..r-.. " I
'K.. 'K. 'K. 1

~ ~ ~
""l""t"'{"'- ~
0.1 I I
,
1"'-
'" "" '" '\
"{"'{"'-
,,, I
'" ""
,
,
,
" """'q "'{
I I I I I
, .'{
I I

~ ~ ~ ~I~ ~I~I~ ~
I K
K
I, I
1

"" "" "" "" """J""""" "" '"""

I 9
0.01
, 8
, I ~ '.: I ~
'\: '\: ~
I
,i 1

'""'" ~"'" ~"""" ~" """ ~l

~~~
"S 7

~'" '"
0.001 I I I I I 1 6
, , 5
, , , I
~
I'""'-
1 1 1 1 1 1 1

I I "'" ""'"
~ ~ ~
"'" 4

0.0001 I I
,
,
I
,
I
I I

I
,
I'"
'" 3

2
1 I ~
I':
0.00001 I I I
I
1 I i "'"
100 105 110 115 120 125 130 135 140 145 150
Percentage VlHz
V/Hz

Figure D-3 Volts/Hz (24IT) Inverse Curve Family #3

D–4
 Inverse Time Curves: Appendix– D

'000000

~ ~
'00000
1 1 1 1

' 0000
~~~ §
'000 "- "- 1"- "- "- 1"- 1 1 1

"
~,
'00
100 _

,.
10
~
"- "- "-
~
_

~-
m _ _

: I'-. I'-. _I'--~ 1 .1 J L 1 -.1 1

~
.•
i

t=e
~
108.75+12S· K1- M
2.4429
0.1

0.01
-~~
~
1"- 1"- "-

~
0.001
0.001 1 1 1 1 1 1 1
~~ ~ ~ ,•
"
~~::~::~:$::~~~:$::~~~~==~~~~~~~~~~~~~~~ :
•
~
OJ)Q01
0.0001 J I i L
7

I
•
0.00001 J "- "- '\. "- "- 5

0.000001

0.0000001
'.0
100 ,os
105 110
§
•.
'"
1
,
12fl ' 25
125
Percentage VlHz
,,.
130 135 14'
140
"-

'"
145
~
,
150
2

..
3

Figure D-4 Volts/Hz (24IT) Inverse Curve Family #4

D–5
 M-3425A Instruction Book

M ultiple of Tap Se tting De finite Time Inve rs e Time Ve ry Inve rs e Time Extre me ly Inve rs e Time

1. 5 0 0.69899 4.5395 4 3.46578 4 . 8 3 5 20

1. 5 5 0.64862 4.15533 3.11203 4.28747

1. 6 0 0.60539 3.81903 2 . 8 12 2 8 3 . 8 3 5 62

1. 6 5 0.56803 3.52265 2.5565 4 3.45706

1. 7 0 0.53558 3.25987 2.3360 7 3 . 13 5 7 3

1. 7 5 0.50725 3.02558 2 . 14 4 3 1 2.85994

1. 8 0 0.48245 2.81566 1.97620 2 . 6 2 0 94

1. 8 5 0.46068 2.62673 1.82779 2 . 4 12 0 8

1. 9 0 0.44156 2.45599 1.69597 2 . 2 2 8 22

1. 9 5 0.42477 2.30111 1.57823 2 . 0 6 5 29

2.00 0.41006 2.16013 1.47254 1. 9 2 0 0 6

2.05 0.39721 2.03139 1.37723 1. 7 8 9 9 4

2.10 0.38606 1.91348 1.29093 1. 6 7 2 7 8

2.15 0.37648 1.80519 1.21249 1. 5 6 6 8 6

2.20 0.3655 4 1. 7 2 2 5 7 1.12812 1. 4 7 8 2 0

2.30 0.3529 3 1. 5 4 0 9 4 1.01626 1. 3 2 2 6 8

2.40 0.34115 1.39104 0.9220 7 1. 19 2 5 0

2.50 0.33018 1. 2 6 5 6 1 0 . 8 4 19 0 1. 0 8 2 2 1

2.60 0.31999 1.15945 0.77301 0 . 9 8 7 80

2.70 0.31057 1. 0 6 8 7 1 0 . 7 13 3 4 0 . 9 0 6 26

2.80 0.30189 0.99049 0 . 6 6 12 7 0 . 8 3 5 27

2.90 0.2939 2 0.92258 0 . 6 15 5 4 0 . 7 7 3 03

3.00 0.2866 6 0.86325 0.57515 0.71811

3.10 0.28007 0.81113 0.53930 0.66939

3.20 0.27415 0.76514 0.50733 0.62593

3.30 0.2688 9 0.72439 0.4787 0 0.58700

3.40 0.2642 7 0 . 6 8 8 18 0.45297 0 . 5 5 19 6

3.50 0.2603 0 0.6559 1 0.42977 0.52032

3.60 0.25697 0 . 6 2 7 10 0.40879 0 . 4 9 16 3

3.70 0.2542 9 0.60135 0.38977 0.46554

3.80 0.2522 9 0.57832 0.3724 8 0 . 4 4 17 5

4.00 0.24975 0.53904 0.34102 0 . 4 0 12 9 Q NOTE: The above

times are in seconds
4.20 0.24572 0.50641 0 . 3 15 2 8 0 . 3 6 5 64
and are given for a
4.40 0.24197 0.47746 0.2933 2 0.33460 time dial of 1.0. For
4.60 0.23852 0.45176 0.27453 0 . 3 0 7 41
other time dial values,
multiply the above by
4.80 0.2354 1 0.42894 0.25841 0 . 2 8 3 46 the time dial value.
Table D-1A M-3425A Inverse Time Overcurrent Relay Characteristic Curves (1 of 2)

D–6
 Inverse Time Curves: Appendix– D

M ultiple of Tap Se tting De finite Time Inve rs e Time Ve ry Inve rs e Time Extre me ly Inve rs e Time

5.00 0.23266 0.4087 1 0.24456 0.26227

5.20 0.23029 0.39078 0 . 2 3 2 69 0.24343
5.40 0.22834 0.37495 0 . 2 2 2 54 0.22660
5.60 0.22684 0 . 3 6 10 2 0.21394 0.21151
5.80 0.22583 0.34884 0 . 2 0 6 73 0.19793
6.00 0.22534 0.33828 0.20081 0.18567
6.20 0.22526 0.32771 0.19511 0.17531
6.40 0.22492 0 . 3 19 3 9 0.19044 0.16586
6.60 0.22360 0.31150 0.18602 0.15731
6.80 0.22230 0.30402 0.18187 0.14957
7.00 0 . 2 2 10 2 0.2969 5 0.17797 0.14253
7.20 0 . 2 19 7 7 0.2902 7 0.17431 0.13611
7.40 0 . 2 18 5 5 0.2839 8 0.17090 0.13027
7.60 0 . 2 17 3 6 0.2780 7 0.16773 0.12492
7.80 0 . 2 16 2 1 0.27253 0.16479 0.12003
8.00 0 . 2 15 1 0 0.26734 0.16209 0.11555
8.20 0 . 2 14 0 3 0.26251 0.15961 0.11144
8.40 0 . 2 13 0 0 0.2580 3 0.15736 0.10768
8.60 0 . 2 12 0 3 0.2538 8 0.15534 0.10422
8.80 0.21111 0.2500 7 0.15354 0.10105
9.00 0 . 2 10 2 5 0.2466 0 0.15197 0.09814
9.50 0.20813 0.2393 5 0.14770 0.0907 0
10.00 0.20740 0.23422 0.14473 0.0847 4
10.50 0.20667 0.22923 0.14180 0.07943
11.00 0.20594 0.22442 0.13894 0 . 0 7 4 69
11.50 0 . 2 0 5 21 0 . 2 19 7 9 0.13615 0.07046
12.00 0.20449 0 . 2 15 3 6 0.13345 0.0666 7
12 . 5 0 0.20378 0.21115 0.13084 0.06329
13.00 0.20310 0.20716 0.12833 0.0602 6
13.50 0.20243 0.2034 1 0.12593 0.0575 5
14.00 0 . 2 0 17 9 0 . 19 9 9 1 0.12364 0.05513
14.50 0.20119 0.19666 0.12146 0.05297
15.00 0.20062 0 . 19 3 6 7 0.11941 0.05104
15.50 0.20009 0 . 19 0 9 5 0.11747 0 . 0 4 9 34
16.00 0 . 19 9 6 1 0 . 18 8 5 1 0.11566 0.04784
16.50 0 . 19 9 1 8 0 . 18 6 3 5 0.11398 0 . 0 4 6 52
17.00 0 . 19 8 8 1 0 . 18 4 4 9 0.11243 0 . 0 4 5 39
17.50 0 . 19 8 5 1 0 . 18 2 9 4 0.11102 0 . 0 4 4 42
Q NOTE: The above
18.00 0 . 19 8 2 7 0 . 18 17 1 0.10974 0.0436 2 times are in seconds
18.50 0.19811 0 . 18 0 8 2 0.10861 0.04298 and are given for a
19.00 0 . 19 8 0 3 0 . 18 0 2 9 0.10762 0.0425 0 time dial of 1.0. For
19.50 0 . 19 8 0 3 0 . 18 0 1 4 0.10679 0.04219
other time dial values,
multiply the above by
20.00 0 . 19 8 0 3 0 . 18 0 1 4 0.10611 0.04205
the time dial value.
Table D-1B M-3425A Inverse Time Overcurrent Relay Characteristic Curves (2 of 2)

D–7
M-3425A Instruction Book

10
\.
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c:
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oO

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~ l"'- r- r- .... t-- r::
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0.1

0.01
1 10 100
Current in Multiples of Pickup

Figure D-5 BECO Definite Time Overcurrent Curve

D–8
 Inverse Time Curves: Appendix– D

\
\\
\~\
\~~

10 ~~.'" ,
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0.01
1 10 100
Current
Cu"ent in Multiples of Pickup

Figure D-6 BECO Inverse Time Overcurrent Curve

D–9
M-3425A Instruction Book

\~
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&
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1 10 100

Current in Multiples of Pickup

Figure D-7 BECO Very Inverse Time Overcurrent Curve

D–10
 Inverse Time Curves: Appendix– D

,
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Current in Multiples of Pickup

Figure D-8 BECO Extremely Inverse Time Overcurrent Curve

D–11
M-3425A Instruction Book

100

10

1.1
1
0.9
0.8
0.6

1 0.4
Seconds
Time in

0.2

.05
0.1

0.01
1 10 100
Current in Multiples of Pickup

t=TD x [M
0.14
0.02
-1 ]
Figure D-9 IEC Curve #1 Inverse

D–12
 Inverse Time Curves: Appendix– D

100

10

1 1.1
Seconds

1
Time in

0.9
0.8
0.6

0.4

0.2

0.1

.05

0.01
1 10 100
Current in Multiples of Pickup

[M-1 ]
13.5
t=TD x

Figure D-10 IEC Curve #2 Very Inverse

D–13
M-3425A Instruction Book

100

10

1
Seconds
Time in

1.1
1
0.9
0.8
0.6
0.1
0.4

0.2

0.01 .05
1 10 100
Current in Multiples of Pickup

[M -1 ]
80
t=TD x 2

Figure D-11 IEC Curve #3 Extremely Inverse

D–14
 Inverse Time Curves: Appendix– D

1000

100

10
Seconds

1.1
Time in

1
0.9
0.8
0.6

0.4

0.2
1

.05

0.1
1 10 100
Current in Multiples of Pickup

[M-1 ]
120
t=TD x

Figure D-12 IEC Curve #4 Long-Time Inverse

D–15
M-3425A Instruction Book

100

10

15
12
10
10
8
6
1 5
Seconds
Time in

44
3

22

0.1
0.5

0.01
1 10 100
Current in Multiples of Pickup

Figure D-13 IEEE (Moderately) Inverse Time Overcurrent Curves

D–16
 Inverse Time Curves: Appendix– D

100

10

15
12
10
1
58
Seconds
Time in

6
5
4
3

0.1 1

0.5

0.01
1 10 100
Current in Multiples of Pickup

Figure D-14 IEEE Very Inverse Time Overcurrent Curves

D–17
M-3425A Instruction Book

100

10

1
Seconds
Time in

15
12
10
58
6
5
4
3
0.1
2

0.5

0.01
1 10 100
Multiple of Pickup

Figure D-15 IEEE Extremely Inverse Time Overcurrent Curves

D–18
 Appendix E – Layup and Storage

E Appendix – Layup and Storage

Appendix E includes the recommended storage Layup of the M-3425A requires verifying that the
parameters, periodic surveillance activities and layup system clock is stopped. The steps necessary to
configuration for the M-3425A Generator Protection verify system clock status are as follows:
Relay.
▲ CAUTION: Do not use the diagnostic mode in
relays that are installed in an active protection
Storage Requirements (Environment) scheme.
The recommended storage environment parameters
for the M-3425A are: For units with the optional HMI panel:
• The ambient temperature where the 1. Verify that the Power Supply (PS) fuses
M-3425A is stored is within a range of 5° are installed.
C to 40° C
2. Determine the unit power supply rating
• The maximum relative humidity is less by observing the check box below the
than or equal to 80% for temperatures up PS terminals on the rear of the unit.
to 31° C, decreasing to 31° C linearly to
50% for relative humidity at 40° C. 3. Apply power to the unit consistant with
the rating determined in Step 2 (see
• The storage area environment is free of Section 5.3 , External Connections). The
dust, corrosive gases, flammable unit will enter the selftest mode.
materials, dew, percolating water, rain and
solar radiation. 4. When the selftests are complete, then
press ENTER to begin main menu.

Storage Requirements (Periodic Surveillance 5. Press the right arrow pushbutton until
During Storage) SETUP UNIT is displayed.
The M-3425A power supply contains electrolytic 6. Press ENTER to access the SETUP
capacitors. It is recommended that power be applied UNIT menu.
to the relay (PS1 and optional PS2 redundant power 7. Press the right arrow pushbutton until
supply when installed and PS2 on extended output DIAGNOSTIC MODE is displayed.
units) every three to five years for a period of not
less than one hour to help prevent the electrolytic 8. Press ENTER. A reset warning will be
capacitors from drying out. displayed:
PROCESSOR WILL RESET!
Layup Configuration ENTER KEY TO CONTINUE
The M-3425A includes a removable lithium battery
backed TIMEKEEPER® module (Beckwith Electric WARNING: All relay functions and protection
component U25, Figure 5-16). The TIMEKEEPER will be inoperative while the relay is in diagnostic
module is the M-3425A real-time clock and also mode.
provides power to the unit’s nonvolatile memory
9. Press ENTER. Unit will now reset and
when power is not applied to the unit.
DIAGNOSTIC MODE will be temporarily
displayed, followed by OUTPUT TEST
(RELAY). This is the beginning of the
diagnostic menu.

E–1
M-3425A Instruction Book

10. Press the right arrow pushbutton until 4. Install IPScom TM Communications
the following is displayed: Software (see Section 4.2, Installation
and Setup) on a PC that includes the
CLOCK TEST following:
I com1 com2 com3 CLOCK
• Microsoft WindowsTM 95 Operating
11. Press ENTER. The following is System or above
displayed: • Equipped with a serial port
CLOCK TEST 5. Connect a null modem cable from COM1
03-JAN-1998 09:00:00.000 of the relay to the PC serial port.
6. Open communications with the relay (see
12. If the clock is running, press ENTER to Section 4.3 Operation, Activating
stop the clock. The following is Connections).
displayed:
7. Select “Relay/Setup/Set Date/Time” from
CLOCK TEST the menu bar. IPScom will display the “Unit
-CLOCK STOP- Date/Time Dialog Screen” Figure 4-16.
8. Verify that “Start Clock” is displayed,
NOTE: When the relay clock is stopped, the
then proceed as follows:
seconds will be displayed as 80.
a. If “Start Clock” is displayed, then
13. Press ENTER and verify the relay clock select “Save” and go to Step 9.
is stopped. A display similar to the b. If “Stop Clock” is displayed, then
following is shown with the seconds select “Stop Clock” and then select
stopped: “Save”.
CLOCK TEST 9. Close communications with the unit by
03-JAN-09:01:80.000 selecting “Comm” from the menu bar
and then select “Exit”.
14. When the clock has been verified to be
10. Disconnect the null modem cable and
stopped, then press EXIT until the
following message appears: then remove power from the unit. The
unit can now be placed in storage.
PRESS EXIT TO
EXIT DIAGNOSTIC MODE
Storage of the M-3425A greater than five years
may require replacement of the lithium battery prior
15. Press EXIT again to exit DIAGNOSTIC
to placing the unit in service. Contact Beckwith
MODE. The relay will reset and normal
Electric Customer Service for replacement
running mode will resume.
procedure.
NOTE: Pressing any button other than EXIT will
return the user to DIAGNOSTIC MODE.

16. Remove power from the unit. The unit

can now be placed in storage.

For units without the optional HMI panel:

1. Verify that the Power Supply (PS) fuses
are installed.
2. Determine the unit power supply rating
by observing the check box(s) below the
PS terminals on the rear of the unit.
3. Apply power to the unit consistant with
the rating determined in Step 2 (see
Section 5.3 , External Connections). The
unit will enter the selftest mode.

E–2
 Declaration of Conformity: Appendix – F

F Appendix F–Declaration of Conformity

F–1
 DECLARATION OF CONFORMITY
( in accordance to ISO/IEC 17050-1:2004 )

No. M-3425A Manufacturer’s Name: Beckwith Electric CO, INC.

Manufacturer’s Address: 6190 118th Avenue North
Largo, FL 33773-3724

The manufacturer hereby declares under our sole responsibility that the M-3425A product conforms to the following product standard
as of January 14th, 2004 in accordance to Directive 2004/108/EC for equipment incorporated into stationary installations:

BS EN 50263:2000
Electromagnetic compatibility ( EMC )
Product standard for measuring relays and protection equipment

Electromagnetic Emissions: EN 60255-25:2000

Conducted 150 kHz to 30MHz

Radiated 30MHz to 1000MHz
Class A Limits

Electromagnetic Immunity

1 MHz Disturbance
EN 60255-22-1:1988
( ANSI C37.90.1:2002 )

Electrostatic Discharge 8kV Contact; 15kV Air

EN 60255-22-2:1997

Radiated RF 80MHz to 1000MHz 10V/m, 80% AM ( 1kHz )

EN 60255-22-3:2001

Fast Transients 5ns/50ns Bursts @ 5kHz for 15ms 300ms for 1 min.
2kV power supply lines and earth 2kV signal data and control lines
EN 60255-22-4:2002

Surge 1Kv Line to Line coupling, 2Kv Line to Earth coupling power supply lines 12Ω source impedance
EN 61000-4-5:1995

Conducted RF 150KHz to 80MHz 10V emf

EN 60255-22-6:2001

Power frequency magnetic field immunity test

30 A/m continuous
EN 61000-4-8:1994

Voltage dips, short interruptions and voltage variations immunity tests

EN 61000-4-11:1994

EN 61010-1: 2001 Safety requirements for electrical equipment for measurement, control, and
laboratory use Part 1. General requirements European Safety Directive

Manufacturers Contact:
Engineering Manager
6190 118th Ave North
Largo, FL 33773-3724
Tel ( 727 ) 544-2326
 Legal Information
Patent Indemnification
The Seller shall not be liable for any property
The units described in this manual are covered by damages whatsoever or for any loss or damage
U.S. Patents, with other patents pending. arising out of, connected with, or resulting from
Buyer shall hold harmless and indemnify the Seller, this contract, or from the performance or breach
its directors, officers, agents, and employees from thereof, or from all services covered by or furnished
any and all costs and expense, damage or loss, under this contract.
resulting from any alleged infringementof United In no event shall the Seller be liable for special,
States Letters Patent or rights accruing thereform or incidental, exemplary, or consequential damages,
trademarks, whether federal, state, or common law, including but not limited to, loss of profits or
arising from the Seller’s compliance with Buyer’s revenue, loss of use of the equipment or any
designs, specifications, or instructions. associated equipment, cost of capital, cost of
purchased power, cost of substitute equipment,
facilities or services, downtime costs, or claims or

Warranty damages of customers or employees of the Buyer

for such damages, regardless of whether said claim
or damages is based on contract, warranty, tort
Seller hereby warrants that the goods which are the including negligence, or otherwise.
subject matter of this contract will be manufactured
Under no circumstances shall the Seller be liable
in a good workmanlike manner and all materials
for any personal injury whatsoever.
used herein will be new and reasonably suitable for
the equipment. Seller warrants that if, during a It is agreed that when the equipment furnished
period of five years from date of shipment of the hereunder are to be used or performed in connec-
equipment, the equipment rendered shall be found tion with any nuclear installation, facility, or
by the Buyer to be faulty or shall fail to peform in activity, Seller shall have no liability for any
accordance with Seller’s specifications of the nuclear damage, personal injury, property damage,
product, Seller shall at his expense correct the or nuclear contamination to any property located at
same, provided, however, that Buyers shall ship the or near the site of the nuclear facility. Buyer agrees
equipment prepaid to Seller’s facility. The Seller’s to indemnify and hold harmless the Seller against
responsibility hereunder shall be limited to replace- any and all liability associated therewith whatso-
ment value of the equipment furnished under this ever whether based on contract, tort, or otherwise.
contract. Nuclear installation or facility means any nuclear
reactor and includes the site on which any of the
Seller makes no warranties expressed or implied
foregoing is located, all operations conducted on
other than those set out above. Seller specifically
such site, and all premises used for such opera-
excludes the implied warranties of merchantibility
tions.
and fitness for a particular purpose. There are no
warranties which extend beyond the description
contained herein. In no event shall Seller be liable for
consequential, exemplary, or punitive damages of
Notice:
whatever nature. Any illustrations and descriptions by Beckwith
Any equipment returned for repair must be sent Electric Co., Inc. are for the sole purpose of
with transportation charges prepaid. The equipment identification.
must remain the property of the Buyer. The afore- The drawings and/or specifications enclosed herein
mentioned warranties are void if the value of the are the proprietary property of Beckwith Electric
unit is invoiced to the Seller at the time of return. Co., Inc., and are issued in strict confidence;
therefore, shall not be used as a basis of reproduc-
tion of the apparatus described therein without
written permission of Beckwith Electric Co., Inc.
No illustration or description contained herein
shall be construed as an express warranty of
affirmation, promise, description, or sample, and
any and all such express warranties are specifically
excluded nor shall such illustration or description
imply a warranty that the product is merchantable
or fit for a particular purpose. There shall be no
warranties which extend beyond those contained in
the Beckwith Electric Co., Inc. terms of sale.

All rights reserved by Beckwith Electric Co., Inc. No reproduction may be made without prior written approval
of the Company.
 0
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BECKWITH ELECTRIC CO., INC.

6190 - 118th Avenue North • Largo, Florida 33773-3724 U.S.A.
PHONE (727) 544-2326 • FAX (727) 546-0121
E-MAIL marketing@beckwithelectric.com
WEB PAGE www.beckwithelectric.com

© 2004 Beckwith Electric Co. 800-3425A-IB-04MC2 07/08

Printed in USA