Start-Up Following The Operation On Maintenance Bypass - GE Digital Energy LP 33 Operating Manual

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8.2.3

Start-up following the operation on maintenance bypass

This procedure presupposes that the load is powered by the manual bypass switch:
• The inverter is switched OFF;
• The manual bypass switch Q2 is switched ON (Pos. I);
• The output switch Q1 is switched OFF (Pos. 0);
• The input fuses rectifier F1, F2, F3 and battery fuses F9, F10, F11 are removed.
1. Insert the rectifier input fuses F1, F2, F3 and the battery fuses F9, F10, F11 (and
eventual external battery fuses) on each unit.
2. Switch ON the output switch Q1 (Pos. I) on each unit.
3. Only in case it has been previously activated (* present
beside the text RESET TOTAL OFF), restore the command
total off on each unit by entering the screen:
MENU/RESET TOTAL OFF
4. Open the maintenance bypass switch Q2 (Pos. 0) on
each unit.
Verify, selecting the screen METERING/Udcp and Udcn,
that the booster voltage has reached about 400 VDC on
each unit.
5. Switch ON the inverter on each unit entering the
screen:
MENU/ COMMAND MENU /INVERTER ON
The load will be automatically transferred from mains to the
inverters as the needed power requested from the applied
load is achieved on inverter side.
The main screen of each unit will display:
APPLICATION ON UPS
OPM_LPS_33E_10K_30K_4CN_V010.doc
LAMP TEST
> RESET TOTAL OFF ‫٭‬
Udcp=400V
>
Operating Manual LP 33 / 10-20-30 kVA
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Udc Voltage
Udcn=400V
INVERTER ON ‫٭‬
INVERTER OFF
LP 33 20kVA P1
APPLICATION ON UPS
GE