CHAPTER 6: SETPOINTS S3 PROTECTION
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–91
U/POWER TRIP PKP
Range: 1% to 100% MNR
Default: 60% MNR
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/POWER TRIP DLY
Range: 0.1 to 60.0 s in steps of 0.1 s
Default: 0.1 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 load (e.g. during system faults).
OUTPUT RELAY X
For details see Common setpoints
.
To select any assignable output relays to operate upon the Underpower Alarm
operation, assign the Logic Operand "UNDERPOWER ALARM OP" or "Any Alarm OP" to a
Logic Element.
BLOCK 1 to 3
For details see Common setpoints
.
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