Ups Shutdown With Load Transfer On Manual Bypass (Q2) - GE LP 33U Series Operating Manual

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 "Total Off" key.
5. Switch "OFF" battery breaker from battery cabinet
The acoustical alarm is activated, press "MUTE" key to reset it.
Modifications reserved
OPM_LPS_3UO_50K_60K_1US_V010.doc
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Operating Manual LP 33U Series 30 & 40 kVA