GE 489 Instruction Manual page 14

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