C H A P T E R 3

BATTERY CABINET INSTALLATION

If you are not installing battery modules into a separate external battery cabinet, continue to •UPS Startup" on page 49 for plug-receptacle units or to •Electrical Installation" on page 23 for hardwired units.

W A R N I N G

Only qualified service personnel (such as a licensed electrician) should perform the battery cabinet installation. Risk of electrical shock.

C A U T I O N

￿Before connecting an external battery cabinet to the UPS cabinet or to another external battery cabinet, verify that all AC input power is removed from the UPS. Open the input service circuit breaker or turn the external bypass switch to the SERVICE position.

￿Disconnect all battery strings in the UPS cabinet and/or battery cabinet to ensure DC voltage is removed from the internal DC buses. You can remove all battery modules or unplug each pair of battery modules from the cabinet backplane.

1.Open the carton containing the external battery cabinet cable assembly, and check that all required parts have been shipped with it.

2.Locate the 3-slot section in the UPS cabinet that contains the power entrance panel. Unscrew and remove the rear panel of this section (see Figure 13).

Powerware® 9170 User's Guide ￿ LTM-1344 B Uncontrolled Copy

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