GE LP 33 Manual De Usuario

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OPM_LPS_3UO_30K_40K_0US_V010.doc 
Operating Manual LP 33 Series 30 & 40 kVA 
7.1.4 Complete 
shutdown 
 
As a result of this procedure the UPS is completely switched OFF and not powered. 
 
 
NOTE ! 
This procedure involves all equipment powered by UPS, to be shut down. 
 
 
1.  Perform the command total off
 
2.  Switch OFF the output switch Q1 (Pos. 0). 
 
3.  Remove the battery fuses F5, F6, F7 and eventual external fuses in case of external battery. 
 
4.  In order to discharge the DC link capacitors, start once more 
the inverter through the screen
MENU/COMMAND MENU/INVERTER ON
 
 
COMMAND MENU 
INVERTER ON * 
INVERTER OFF 
 
 
Remark: command 
INVERTER ON will be enabled only when 
the inverter voltage of each phase decreases 
below 7 VAC (about 30 seconds). 
 
INVERTER: U1= 
 
7V 
U2=  7V U3= 
 
7V 
Frequency    =    60.0Hz 
Synchronized
 
 
Before proceeding to step 5, 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). 
 
Udcp=  5V Udcn= 
5V 
Ubp=0V 
Ubn=0V   O 
Charge level 
=  0% 
Autonomy = 
0min
 
 
5.  Switch OFF the inverter by entering the screen: 
 MENU/COMMAND MENU/INVERTER OFF 
 
COMMAND MENU 
INVERTER ON 
INVERTER OFF *
 
 
 
6.  Switch OFF the mains power at the AC input distribution panel
 
END OF PROCEDURE 
 
 
CAUTION ! 
If the above procedure is not completely performed, it could cause 
serious damages to the UPS. 
 
 
WARNING ! 
In case the procedure described on step “4 - discharge DC link capacitors” cannot be 
completely performed, the DC capacitors could be charged with dangerous voltage 
for about 15 minutes. 
Wait until capacitors are completely discharged before starting the UPS again. 
Apart from the front door, do not open any other part of the UPS