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S3 PROTECTION
6–86
GND ALARM ON RUN
Range: 0.00 to 60.00 s in steps of 0.01 s
Default: 0.00 s
This setting specifies the amount of time by which motor ground current must exceed
pickup to generate an alarm when the motor is in running condition.
GND ALARM ON START
Range: 0.00 to 60.00 s in steps of 0.01 s
Default: 0.00 s
This setting specifies the amount of time by which motor ground current must exceed
pickup to generate an alarm when the motor is in starting condition.
GND TRIP FUNC
Range: Disabled, Enabled
Default: Disabled
This setting enables the Ground Fault Trip functionality.
GND TRIP PKP
Ground CT Type = 1A Secondary, 5A Secondary:
Range: 0.03 to 1.00xCT in steps of 0.01xCT
Default: 0.10xCT
Ground CT Type = 50:0.025:
Range: 0.50 to 15.00 A in steps of 0.01 A
Default: 10.00 A
This setting specifies the Pickup threshold for the Trip stage.
GND TRIP ON RUN
Range: 0.00 to 5.00 s in steps of 0.01 s
Default: 0.00 s
This setting specifies the amount of time by which motor ground current must exceed
pickup to generate a Trip when the motor is in running condition.
GND TRIP ON START
Range: 0.00 to 10.00 s in steps of 0.01 s
Default: 0.00 s
This setting specifies the amount of time by which motor ground current must exceed
pickup to generate a Trip when the motor is in starting condition.
OUTPUT RELAY 4 to 6 / OUTPUT RELAY 5 to 6
Range: Do not operate, Operate
Default: Do not operate
Any assignable output relay can be selected to operate upon Ground Fault operation.
When the SWITCHING DEVICE is selected as BREAKER, the assignable output relays will
be Output Relay 4 to 6. When the SWITCHING DEVICE is selected as CONTACTOR, the
assignable output relays will be Output Relay 5 to 6.
BLOCK 1 to 3
Range: Off, Contact Input 1 to 10, Virtual Input 1 to 32, Remote Input 1 to 32, Logic
Element 1 to 16
Default: Off
Three blocking inputs are provided for the Ground Fault feature. When any of the
selected blocking inputs is on, the Ground Fault function is blocked.
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: SETPOINTS
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