From Manual Bypass Q2 To Normal Function Vfi - GE LP 33U Series Operating Manual

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);
• Switch "OFF" battery breaker from Battery Cabinet.
• LED Alarm blinks.
NOTE !
This procedure must not be performed if the UPS is used as frequency converter.
1. Switch "ON" battery breaker from battery cabinet.
2. 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".
3. Only in case it has been previously activated, restore the
command "Total Off" by entering the screen:
COMMANDS/RESET TOTAL OFF
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 215 Vdc.
5. Insert the inverter by pressing "Inverter ON" ( I ) key.
Some seconds later the load will be transferred on inverter.
LED Alarm turn Off and the LED Operation must be lit.
The synoptic diagram must display the status "LOAD SUPPLIED BY
INVERTER".
Modifications reserved
OPM_LPS_3UO_50K_60K_1US_V010.doc
END OF PROCEDURE
Home\Commands
COMMANDS
RESET TOTAL OFF
REQUEST TOTAL OFF
Home\Meter
BOOSTER
f :
L1 :
L2 :
L3 :
Vp :
Vn :
Operating Manual LP 33U Series 30 & 40 kVA
60.0 Hz
120 V
120 V
120 V
215 V
215 V
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