GE Digital Energy LP 33 Operating Manual page 59

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6. In order to discharge the DC link capacitors, start once
more the inverter through the screen:
MENU/COMMAND MENU/INVERTER ON
Remark: command INVERTER ON will be enabled only
when the inverter voltage of each phase
decreases below 7 VAC (about 30 seconds).
Before proceeding to step 7, check on the display panel that
the DC link voltage (both polarities) Udcp and Udcn has
reached the minimum voltage of 5 VDC (about 30 seconds).
7. Switch OFF the inverter by entering the screen:
MENU/COMMAND MENU/INVERTER OFF
Attention: to switch OFF permanently the inverter the key
Enter must be pressed 2 times.
The load is now powered directly by mains through the manual bypass Q2.
WARNING !
The UPS cabinet contains parts electrically live.
Apart from the front door, do not open any other part of the UPS.
NOTE !
With separate mains inputs, it's possible to disconnect mains rectifier.
OPM_LPS_33E_10K_30K_4CN_V010.doc
>
Inverter:
U2= 7V
Udcp= 5V
>
Operating Manual LP 33 / 10-20-30 kVA
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GE
INVERTER ON ‫٭‬
INVERTER OFF
U1= 7V
U3= 7V
Udc Voltage
Udcn= 5V
INVERTER ON
INVERTER OFF ‫٭‬