GE Industrial Solutions LP 33U Series 10 & 20 kVA Operating Manual - Manual (Page 52)

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OPM_LPS_3UO_10K_20K_1US_V010.doc Operating Manual LP 33U Series 10 & 20 kVA / S1
3. Insert the “Battery fuses - F9, F10, F11 / F13, F14, F15” and eventual external fuses in case of
external battery on all UPS units.
DANGER !
Before to perform this operation, check the right DC polarities on both side of the
switch/fuse holder!
4. Close the output switch Q1 (Pos. I) on all UPS units.
When the last Q1 will be closed the output will be supplied by the
utility through all automatic bypasses.
The synoptic diagram, on all UPS units, must display the status
“LOAD SUPPLIED BY AUTOMATIC BYPASS”.
` Home\Meter
BOOSTER
f : 60.0 Hz
L1 : 120 V
L2 : 120 V
L3 : 120 V
Vp : 215 V
Vn : 215 V
Verify on all UPS units, 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 on first UPS unit.
In case of sufficient output power, the output will transfer to
Inverter.
LED Alarm turn Off and the LED Operation must be is lit.
The synoptic diagram, on first UPS unit, must display the status
“LOAD SUPPLIED BY INVERTER”.
6. Insert the inverter by pressing “Inverter ON” ( I ) key on all other UPS units.
Do not start the next inverter until the sequence of the previous one end.
As soon as the output power of the inverters is sufficient to supply the load, the output of the units with
running inverter will transfer to inverter.
LED Alarm turn Off and the LED Operation must be lit.
The synoptic diagram, on all UPS units, must display the status
“LOAD SUPPLIED BY INVERTER”.
7. Load supply.
LP 33U Series Parallel System is now running, supplying power to the output.
Insert the loads one by one to the output of the LP 33U Series Parallel System.
Check the output current value of L1, L2 and L3 and check for correct load balance.
END OF PROCEDURE
NOTE !
Even if the UPS is delivered with the battery fully charged, they could be partially
discharged during transportation or storage.
It is recommended to recharge the battery during at least 10 hours in order to provide
the complete battery energy stored to the load in the event of utility failure.