GE 469 Manual page 15

1 INTRODUCTION
CURRENT UNBALANCE
Unbalance: I / I if I
2 1 avg
× I
I / I
2 1 avg
Range: 0 to 100% UB in steps of 1
Pickup Level: 4 to 40% UB in steps of 1
Time Delay: 1 to 60 s in steps of 1
Pickup Accuracy: ±2%
Timing Accuracy: ±0.5 s or ± 0.5% of total time
Elements: Trip and Alarm
GROUND INSTANTANEOUS
0.1 to 1.0 × CT primary in steps of 0.01
Pickup Level:
Time Delay: 0 to 1000 ms in steps of 10
Pickup Accuracy: as per Ground Current Input
Timing Accuracy: +50 ms
Elements: Trip and Alarm
PHASE DIFFERENTIAL INSTANTANEOUS
0.05 to 1.0 × CT primary in steps of 0.01
Pickup Level:
of any one phase
Time Delay: 0 to 1000 ms in steps of 10
Pickup Accuracy: as per Phase Differential Current Inputs
Timing Accuracy: +50 ms
Elements: Trip
ACCELERATION TIMER
Pickup: transition of no phase current to > over-
load pickup
Dropout: when current falls below overload pickup
Time Delay: 1.0 to 250.0 s in steps of 0.1
Timing Accuracy: ±100 ms or ± 0.5% of total time
Elements: Trip
JOGGING BLOCK
Starts/Hour: 1 to 5 in steps of 1
Time Between Starts: 1 to 500 min.
Timing Accuracy: ±0.5 s or ± 0.5% of total time
Elements: Block
RESTART BLOCK
Time Delay: 1 to 50000 s in steps of 1
Timing Accuracy: ±0.5 s or ± 0.5% of total time
Elements: Block
RTD
Pickup: 1 to 250°C in steps of 1
Pickup Hysteresis:2°C
Time Delay: 3 s
Elements: Trip and Alarm
GE Power Management
> FLA
/ FLA if I < FLA
avg
469 Motor Management Relay
UNDERVOLTAGE
Pickup Level:
Motor Starting: 0.60 to 0.99 × Rated in steps of 0.01
Motor Running: 0.60 to 0.99 × Rated in steps of 0.01
of any one phase
Time Delay: 0.1 to 60.0 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 1.10 × Rated in steps of 0.01 of
Pickup Level:
any one phase
Time Delay: 0.1 to 60.0 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
VOLTAGE PHASE REVERSAL
Configuration: ABC or ACB phase rotation
Timing Accuracy: 500 to 700 ms
Elements: Trip
FREQUENCY
Required Voltage:> 30% of full scale in Phase A
Overfrequency Pickup: 25.01 to 70.00 in steps of 0.01
Underfrequency Pickup: 20.00 to 60.00 in steps of 0.01
Accuracy: ±0.02 Hz
Time Delay: 0.1 to 60.0 s in steps of 0.1
Timing Accuracy: <100 ms or ±0.5% of total time
Elements: Trip and Alarm
REDUCED VOLTAGE START
Transition Level: 25 to 300% FLA in steps of 1
Transition Time: 1 to 250 s in steps of 1
Transition Control: Current, Timer, Current and Timer
REMOTE SWITCH
Configurable: Assignable to Digital Inputs1 to 4
Timing Accuracy: 100 ms max.
Elements: Trip and Alarm
SPEED SWITCH
Configurable: Assignable to Digital Inputs1 to 4
Time Delay: 1.0 to 250.0 s in steps of 0.1
Timing Accuracy: 100 ms max.
Elements: Trip
LOAD SHED
Configurable: Assignable to Digital Inputs1 to 4
Timing Accuracy: 100 ms max.
Elements: Trip
1.2 SPECIFICATIONS
1-7
1