Operation & Maintenance Manual - LG RCAW Operation & Maintenance Manual

REV.
UNBAL.
AUTO
5S/1S
The voltage unbalance tripping is activated when the unbalance exceeds +5% more than 3 seconds. Similarly, phase
loss tripping has 2 second delay and phase reverse tripping has 0.5 second delay.
The over voltage tripping point and tripping delay are configurable through rotary switch on the voltage monitoring relay.
The under voltage tripping point and tripping delay are also configurable through another rotary switch on the voltage
monitoring relay. The factory setting of the rotary switches are shown in the below table.
Over Voltage Value
Over Voltage Delay
Under Voltage Value
Under Voltage Delay
UNBAL.
REV.
Reverse phase protected
ON
Reverse phase unprotected
OFF
Unbalance protected
ON
Unbalance unprotected
OFF
Auto reset
ON
Manual reset
OFF
Auto reset delay 5 sec
ON
Auto reset delay 1 sec
OFF
Rate Voltage
AUTO
5S
1S
OFF
Table 22
380VAC
416VAC
4S
342VAC
4S
Table 23
Operation & Maintenance Manual 61
400VAC
440VAC
360VAC
Service