Ge 489 User Manual download pdf (Page 14)

1-6 489 Generator Management Relay GE Multilin

1.2 SPECIFICATIONS 1 INTRODUCTION

Timing Accuracy: ±0.5 s or ±0.5% of total time

Elements: Trip and Alarm

OVERCURRENT ALARM

Pick-up Level: 0.10 to 1.50 × FLA in steps of 0.01

average phase current

Time Delay: 0.1 to 250.0 s in steps of 0.1

Pickup Accuracy: as per Phase Current Inputs

Timing Accuracy: ±100 ms or ±0.5% of total time

Elements: Alarm

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

Timing Accuracy: +50ms at 50/60 Hz

Elements: Trip

INADVERTENT ENERGIZATION

Arming Signal: undervoltage 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

Timing Accuracy: +50 ms at 50/60 Hz

Elements: Trip

PHASE OVERCURRENT

Voltage Restraint: Programmable 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

Timing 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

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

Timing 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

Timing 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

Timing 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

Timing 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

Timing 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 Voltage Inputs

Timing 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 Voltage Inputs

Timing 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 voltage inputs

Timing Accuracy: ±100 ms at ≥ 1.2 × Pickup

±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

Required Voltage: 0.50 to 0.99 × rated voltage 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

Timing Accuracy: ±100 ms or ±0.5% of total time

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Ge 489 User Manual Page 14

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