OPERATION

Parallel UPS Startup

WA RNING

Only qualified service personnel (such as a licensed electrician) should perform the UPS installation and initial startup. Risk of electrical shock.

Verify that UPS installation has been carried out correctly and the UPS ground has been connected.

NOTE In a parallel capacity system (2+0 or 2+1), determine the minimum number of UPSs required for capacity.

To start up the parallel system:

1.Verify that all UPS breakers on the parallel tie cabinet are in the OFF position.

2.Switch on utility power where the UPSs are connected.

3.Wait for the front panel LCD to illuminate. The indicator flashes on each UPS.

4.Remove the breaker tie from all battery circuit breakers.

5.Switch all battery circuit breakers to the ON position. The indicator stops flashing on each UPS.

EATON Powerware® 9155 Parallel UPS (8–15 kVA) User’s Guide S 164201592 Rev C www.powerware.com

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