GE Industrial Solutions LP33 Series 80 & 100 User Manual - Manual (Page 56)

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OPM_LPS_3UO_80K_M10_1US_V010.doc User Manual LP33 Series 80 & 100 UL S1
7.2.2 Parallel 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 System Parallel must be completely switched OFF for
maintenance or service purpose, performed by an authorized Service Center.
The synoptic diagram, on all UPS units, must display the
status “LOAD SUPPLIED BY INVERTER”.
1. Disconnect the inverter by pressing “Inverter OFF” ( O ) key and hold until the LED Inverter (7)
turns OFF on all UPS units.
The output will be supplied by the utility through all
automatic bypass.
LEDs Alarm are lit and the LEDs Operation are Off.
The synoptic diagram, on all UPS units, must display the
status “LOAD SUPPLIED BY AUTOMATIC BYPASS”.
2. Close the manual bypass switch Q2 (Pos. I) on all UPS units.
Load is now supplied from utility in parallel from automatic bypass and manual bypass Q2 of all UPS units.
The synoptic diagram, on all UPS units, must display the
status “LOAD SUPPLIED BY AUTOMATIC BYPASS AND
MANUAL BYPASS Q2”.
3. Open the output switch Q1 (Pos. 0) on all UPS units.
The load is now supplied only through the manual bypass
Q2.
The synoptic diagram, on all UPS units, must display the
status “LOAD SUPPLIED BY MANUAL BYPASS Q2”.
4. Press “Load Off” key on all UPS units.
5. Switch OFF (Pos. 0) the “Battery Breaker” on each battery cabinet.
The acoustical alarm is activated, press “MUTE” key to reset it.
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