1-6 489 Generator Management Relay
GE Power Management
1.2 SPECIFICATIONS 1 INTRODUCTION
1
OFFLINE OVERCURRENT
Pick-up Level: 0.05 to 1.00 × CT in steps of 0.01
of any one phase
Time Delay: 3 to 99 cycles in steps of 1
Pickup Accuracy: as per Phase Current Inputs
Timin
Accuracy: +50ms at 50/60 Hz
Elements: Trip
INADVERTENT ENERGIZATION
Armin
Si
nal: undervolta
e and/or offline from breaker
status
Pick-up Level: 0.05 to 3.00 × CT in steps of 0.01
of any one phase
Time Delay: no intentional delay
Pickup Accuracy: as per Phase Current Inputs
Timin
Accuracy: +50 ms at 50/60 Hz
Elements: Trip
PHASE OVERCURRENT
Volta
e Restraint: Pro
rammable fixed characteristic
Pick-up Level: 0.15 to 20.00 × CT in steps of 0.01
of any one phase
Curve Shapes: ANSI, IEC, IAC, Flexcurve, Definite Time
Time Delay: 0.000 to 100.000 s in steps of 0.001
Pickup Accuracy: as per Phase Current Inputs
Timin
Accuracy: +50 ms at 50/60 Hz or ±0.5% total time
Elements: Trip
NEGATIVE SEQUENCE OVERCURRENT
Pick-up Level: 3 to 100% FLA in steps of 1
Curve Shapes: I
2
2
t trip defined by k, definite time alarm
Time Delay: 0.1 to 100.0 s in steps of 0.1
Pickup Accuracy: as per Phase Current Inputs
Timin
Accuracy: ±100ms or ± 0.5% of total time
Elements: Trip and Alarm
GROUND OVERCURRENT
Pick-up Level: 0.05 to 20.00 × CT in steps of 0.01
Curve Shapes: ANSI, IEC, IAC, Flexcurve, Definite Time
Time Delay: 0.00 to 100.00 s in steps of 0.01
Pickup Accuracy: as per Ground Current Input
Timin
Accuracy: +50 ms at 50/60 Hz or ±0.5% total time
Elements: Trip
PHASE DIFFERENTIAL
Pick-up Level: 0.05 to 1.00 × CT in steps of 0.01
Curve Shape: Dual Slope
Time Delay: 0 to 100 cycles in steps of 1
Pickup Accuracy: as per Phase Current Inputs
Timin
Accuracy: +50 ms at 50/60 Hz or ±0.5% total time
Elements: Trip
GROUND DIRECTIONAL
Pickup Level: 0.05 to 20.00 × CT in steps of 0.01
Time Delay: 0.1 to 120.0 s in steps of 0.1
Pickup Accuracy: as per Phase Current Inputs
Timin
Accuracy: ±100 ms or ±0.5% of total time
Elements: Trip and Alarm
HIGH-SET PHASE OVERCURRENT
Pickup Level: 0.15 to 20.00 × CT in steps of 0.01
Time Delay: 0.00 to 100.00 s in steps of 0.01
Pickup Accuracy: as per Phase Current Inputs
Timin
Accuracy: ±50 ms at 50/60 Hz or ±0.5% total time
Elements: Trip
UNDERVOLTAGE
Pick-up Level: 0.50 to 0.99 × rated V in steps of 0.01
Curve Shapes: Inverse Time, definite time alarm
Time Delay: 0.2 to 120.0 s in steps of 0.1
Pickup Accuracy: as per Volta
e Inputs
Timin
Accuracy: ±100 ms or ±0.5% of total time
Elements: Trip and Alarm
OVERVOLTAGE
Pick-up Level: 1.01 to 1.50 × rated V in steps of 0.01
Curve Shapes: Inverse Time, definite time alarm
Time Delay: 0.2 to 120.0 s in steps of 0.1
Pickup Accuracy: as per Volta
e Inputs
Timin
Accuracy: ±100 ms or ±0.5% of total time
Elements: Trip and Alarm
VOLTS/HERTZ
Pick-up Level: 1.00 to 1.99 × nominal in steps of 0.01
Curve Shapes: Inverse Time, definite time alarm
Time Delay: 0.1 to 120.0 s in steps of 0.1
Pickup Accuracy: as per volta
e inputs
Timin
Accuracy: ±100 ms at ≥ 1.2 × Pickup
±300 ms at < 1.2 × Pickup
Elements: Trip and Alarm
VOLTAGE PHASE REVERSAL
Confi
uration: ABC or ACB phase rotation
Timin
Accuracy: 200 to 400 ms
Elements: Trip
UNDERFREQUENCY
Required Volta
e: 0.50 to 0.99 × rated volta
e in Phase A
Block From Online: 0 to 5 sec. in steps of 1
Pick- up Level: 20.00 to 60.00 in steps of 0.01
Curve Shapes: 1 level alarm, two level trip definite time
Time Delay: 0.1 to 5000.0 sec. in steps of 0.1
Pickup Accuracy: ±0.02 Hz
Timin
Accuracy: ±100 ms or ±0.5% of total time
Elements: Trip and Alarm
OVERFREQUENCY
Required Volta
e: 0.50 to 0.99 × rated volta
e in Phase A
Block From Online: 0 to 5 sec. in steps of 1
Pick- up Level: 25.01 to 70.00 in steps of 0.01
Curve Shapes: 1 level alarm, 2 level trip definite time
Time Delay: 0.1 to 5000.0 s in steps of 0.1
Pickup Accuracy: ±0.02 Hz
Timin
Accuracy: ±100 ms or ±0.5% of total time
Elements: Trip and Alarm
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