GE Industrial Solutions LP33 Series 80 & 100 User Manual - Manual (Page 46)

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OPM_LPS_3UO_80K_M10_1US_V010.doc User Manual LP33 Series 80 & 100 UL S1
7.1.2 UPS shutdown with load transfer on manual bypass Q2
The purpose of this procedure is to supply the load directly by utility through manual bypass Q2.
This procedure is normally performed when the UPS must be completely switched OFF for maintenance
or service purpose, performed by an authorized Service Center.
NOTE !
This procedure must not be performed if the UPS is used as frequency converter.
1. Disconnect the inverter by pressing “Inverter OFF” ( O ) key and hold until the LED inverter (7)
turns OFF.
Load is transferred to utility by automatic bypass.
LED Alarm is lit and the LED Operation is Off.
The synoptic diagram must display the status “LOAD
SUPPLIED BY AUTOMATIC BYPASS”.
2. Close the manual bypass switch Q2 (Pos. I).
Load is now supplied parallel through automatic bypass and manual bypass Q2.
The synoptic diagram must display the status “LOAD
SUPPLIED BY AUTOMATIC BYPASS AND MANUAL BYPASS Q2”.
3. Open the output switch Q1 (Pos. 0).
The load is now supplied only through the manual bypass Q2.
The synoptic diagram must display the status “LOAD
SUPPLIED BY MANUAL BYPASS Q2”.
4. Press “Load Off” key.
5. Switch OFF (Pos. 0) the “Battery Breaker” from battery cabinet.
The acoustical alarm is activated, press “MUTE” key to reset it.
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