GE Industrial Solutions LP33 Series 80 & 100 User Manual - Manual (Page 49)

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OPM_LPS_3UO_80K_M10_1US_V010.doc User Manual LP33 Series 80 & 100 UL S1
7.1.4 Complete UPS shutdown
As a result of this procedure the UPS is completely switched OFF and not powered.
NOTE !
Follow this procedure only in case the UPS system and the load must be completely
powered-down.
1. Press “Load Off” key.
2. Open the output switch Q1 (Pos. 0).
3. Switch OFF (Pos. 0) the “Battery Breaker” from battery cabinet.
The acoustical alarm is activated, press “MUTE” key to reset it.
4. In order to discharge the DC link capacitors, insert the inverter by pressing “Inverter ON” ( I ) key.
` Home\Meter
INVERTER
f : 60.0 Hz
L1 : 7 V
L2 : 7 V
L3 : 7 V
T : OK
SYNCHRONIZED
Remark:
Command INVERTER ON will be enabled only when the inverter
voltage of each phase decreases below 7 Vac (about 30 seconds).
The acoustical alarm is activated, press “MUTE” key (from Home
screen) to reset it.
` Home\Meter
BOOSTER
f : 60.0 Hz
L1 : 120 V
L2 : 120 V
L3 : 120 V
Vp : 5 V
Vn : 5 V
Before proceeding to step 5, check on the display panel that the DC
link voltage (both polarities) Vp and Vn has reached the max.
voltage of 5 Vdc (about 30 seconds).
5. Disconnect the inverter by pressing “Inverter OFF” ( O ) key and hold until the LED inverter (7)
turns OFF.
6. Switch OFF (Pos. 0) the utility power at the AC input distribution panel.
END OF PROCEDURE
WARNING !
If the above procedure is not completely performed, it could cause
serious damages to the UPS.
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 a minimum of 5 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.