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

7.2

PROCEDURES FOR LP 33U Series PARALLEL SYSTEM

7.2.1 LP 33U Series Parallel System start-up

WARNING
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 utility 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 "battery breaker" Q3 is OFF.
This procedure must be performed for the first start-up following the installation, with all the UPS units
completely switched Off and not powered.
This procedure presupposes that the load is not yet supplied by the UPS Parallel System.
NOTE !
The UPS Parallel System can be started-up using the battery supply in case the input
utility should be unavailable.
To avoid an incidental battery discharge, it is recommended to proceed to the UPS
Parallel System start-up having the input utility available.
Open the front door on all UPS units and make sure that:
All the connections to the input/output terminals of the UPS have been made correctly.
•
The safety screens are fixed in their position.
•
The switches Q1 and Q2 are open (Pos. O) and the "battery breaker" Q3 is OFF..
•
Q1 UPS output switch
Q2 Manual bypass switch
Key
Inverter ON Inverter OFF
Modifications reserved
OPM_LPS_3UO_50K_60K_1US_V010.doc
!
Key Key
Total Off
LEDs on synoptic diagram
LED 1 Utility rectifier OK
LED 2 Utility bypass OK
LED 3 Rectifier ON
LED 4 Discharging battery
LED 5 Booster ON
LED 6 Charge battery ON
LED LED
Stop Operation Alarm
LED 7 Inverter available
LED 8 Inverter ON
LED 9 Q1 closed
LED 10 Automatic bypass ON
LED 11 Manual bypass Q2 ON
LED 12 Load on UPS
LED
Operation
Continue ►
Page 51/65
Operating Manual LP 33U Series 30 & 40 kVA