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S3 PROTECTION
6–82
UNBAL TRIP FUNC
Range: Disabled, Enabled
Default: Disabled
This setting enables the Current Unbalance Trip functionality.
UNBAL TRIP PKP
Range: 4% to 40% in steps of 1%
Default: 30%
This setting specifies a pickup threshold for the current unbalance trip stage. This setting
should be greater than the corresponding setting for the alarm stage.
UNBAL 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.
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 Current Unbalance
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 Current Unbalance feature. When any of the
selected blocking inputs is on, the Current Unbalance function is blocked.
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: SETPOINTS
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