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CHAPTER 6: SETPOINTS
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
U/CURR TRIP PKP
Range: 1% to 100% FLA in steps of 1% FLA
Default: 60% FLA
This setting specifies a pickup threshold for the trip stage. This setting is typically set at a
level less than the corresponding setting for the alarm stage.
U/CURR TRIP DELAY
Range: 1.00 to 60.00 s in steps of 0.01 s
Default: 1.00 s
This setting specifies a time delay for the trip stage. The time delay should be long
enough to overcome any short lowering of the current (e.g. during system faults).
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 Undercurrent 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 Undercurrent feature. When any of the
selected blocking inputs is on, the Undercurrent function is blocked.
S3 PROTECTION
6–79
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