OPM_LPS_33E_10K_30K_4CN_V010.doc 56/82 Operating Manual LP 33 / 10-20-30 kVA
8 OPERATION
8.1 PROCEDURES FOR SINGLE LP 33
8.1.1 Start-up of the LP 33
Before connecting hazardous voltages, make sure that:
• The connection to the electrical system has been performed by qualified
personnel;
• The equipment frame has been correctly grounded to the main earth;
• Make sure that mains input protection is removed;
• All the panels removed to allow the UPS connection have been correctly
reinstalled;
• The UPS switches Q1 and Q2 are OFF (Pos. 0);
• The input fuses rectifier F1, F2, F3 and battery fuses F9, F10, F11 is removed.
This procedure must be performed for the first start-up following the installation, with the UPS
completely switched Off and not powered (exception made if the batteries are included in the UPS
cabinet).
This procedure presupposes that the load is not yet supplied by the UPS system.
NOTE !
The UPS can be started-up using the battery supply in case the input mains
should be unavailable.
To avoid an incidental battery discharge, it is recommended to proceed to the
UPS start-up having the input mains available.
1. Insert the rectifier input fuses F1, F2 and F3.
EXECUTING SELF TEST
00000000000
2. Switch ON the mains power at the input distribution
panel.
As a result the UPS performs a self-test and the LCD will
show the following screen:
SELF TEST
SELF TEST OK!
In case the alarm “4410 - Mains bypass out of
tolerance” persists, check the phases
rotation of the input mains.
3. Insert the battery fuses F9, F10, F11 and eventual external fuses in case of external
battery.
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