GE Industrial Solutions LP33 Series 80 & 100 User Manual - Manual (Page 48)

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OPM_LPS_3UO_80K_M10_1US_V010.doc User Manual LP33 Series 80 & 100 UL S1
7.1.3 From Manual Bypass Q2 to normal function VFI
This procedure presupposes that the load is powered by the manual bypass switch, and:
• The inverter is switched OFF;
• The manual bypass switch Q2 is closed (Pos. I);
• The output switch Q1 is open (Pos. 0);
• The “Battery Breaker” of the battery cabinet is OFF (Pos. 0).
• LED Alarm blinks.
NOTE !
This procedure must not be performed if the UPS is used as frequency converter.
1. Close the output switch Q1 (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”.
2. Switch ON (Pos. I) the “Battery Breaker” from battery cabinet.
` Home\Commands
COMMANDS
RESET TOTAL OFF
REQUEST TOTAL OFF
3. Only in case it has been previously activated, restore
the command “Load Off” by entering the screen:
COMMANDS/RESET TOTAL OFF
V 
` Home\Meter
BOOSTER
f : 60.0 Hz
L1 : 120 V
L2 : 120 V
L3 : 120 V
Vp : 210 V
Vn : 210 V
4. Open the manual bypass switch Q2 (Pos. 0).
The load is supplied by the utility through the automatic
bypass.
Verify, selecting the screen METERING/BOOSTER/Vp and
Vn, that the booster voltage has reached about 210 Vdc.
5. Insert the inverter by pressing “Inverter ON” ( I ) key.
Some seconds later the load will be transferred on
inverter.
LED Alarm turns OFF and the LED Operation must be lit.
The synoptic diagram must display the status “LOAD
SUPPLIED BY INVERTER”.
END OF PROCEDURE