Procedures For Parallel System Lp 33 Series; Parallel System Start-Up Of The Lp 33 Series - GE LP 33 Series Operating Manual

8.2

PROCEDURES FOR PARALLEL SYSTEM LP 33 Series

8.2.1

Parallel System start-up of the LP 33 Series

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 all the units
completely switched Off and not powered.
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 on each unit.
2. Switch ON the mains power for each unit at the input
distribution panel.
As a result each unit performs a self-test and the LCD will show
the following screen:
The LCD screen will display the number of the unit in the parallel
system (P1, P2, P3 or P4).
NOTE !
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 on each unit.
Modifications reserved
OPM_LPS_33E_10K_30K_4GB_V030.doc
EXECUTING MAINBOARD
SELF TEST
00000000000
SELF TEST OK!
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Operating Manual LP 33 Series / 10-20-30 kVA
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