GE 869 - Page 293

CHAPTER 4: SETPOINTS PROTECTION
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–161
NOTE
NOTE:
The Trip Pickup Start Delay must be set less than the motor starting time in order to avoid
any delayed operation of the element in an event of a ground fault that occurs during
motor start and continues while the motor enters into running state.
TRIP PICKUP RUN DELAY
Range: 0.00 to 180.00 s in steps of 0.01 s
Default: 1.00 s
This setting specifies the amount of time motor ground current must exceed pickup to
generate a trip when the motor is in a running condition.
TRIP DROPOUT DELAY
Range: 0.00 to 180.00 s in steps of 0.01 s
Default: 0.01 s
This setting specifies a time delay to reset the trip command. This delay must be set long
enough to allow the breaker or contactor to disconnect the motor.
TRIP OUTPUT RELAY X
For details see Common Setpoints
.
ALARM FUNCTION
Range: Disabled, Alarm, Latched Alarm
Default: Disabled
This setting enables the Ground Fault Alarm functionality.
ALARM PICKUP
For 1/5A Ground CT Type:
Range: 0.01 to 10.00 x CT in steps of 0.01 x CT
Default: 0.1 x CT
For 50:0.025 Ground CT Type:
Range: 0.50 to 15.00 A in steps of 0.01 A
Default: 5.00 A
This setting specifies a pickup threshold for the alarm function.
ALARM PICKUP DELAY
Range: 0.00 to 180.00 s in steps of 0.01 s
Default: 1.00 s
This setting specifies the amount of time motor ground current must exceed pickup to
generate an alarm.
ALARM DROPOUT DELAY
Range: 0.00 to 180.00 s in steps of 0.01 s
Default: 0.01 s
This setting specifies a time delay to reset the alarm command.
ALARM OUTPUT RELAY X
For details see Common Setpoints
.
BLOCK
Range: FlexLogic Operand
Default: Off
The Ground Fault can be blocked by any asserted FlexLogic operand.
EVENTS
Range: Enabled, Disabled
Default: Enabled