6–54 339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
S3 PROTECTION CHAPTER 6: SETPOINTS
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 X
For details see Common setpoints
.
To select any assignable output relays to operate upon the Undercurrent Alarm
operation, assign the Logic Operand "UNDERCURRENT ALARM OP" or "Any Alarm OP" to
a Logic Element.
BLOCK 1 to 3
For details see Common setpoints
.
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