Electrical Installation

If a bypass switch is not used, the UPS input may be hardwired through conduit to a main power source circuit breaker, and the UPS output may either be hardwired to a circuit breaker in a distribution panel (as shown in Figure 19) or supplied to loads through receptacles on the back of the UPS. Without a bypass switch, power to the load cannot be maintained if the UPS is taken completely offline.

 

 

 

 

 

 

 

 

 

 

 

 

Building

 

 

 

 

 

 

 

Load

 

 

Service

 

 

 

 

 

 

 

Distribution

 

 

Panel

 

 

 

 

 

 

 

Panel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

User-supplied

(If Required) External Batteries

(Optional)

Figure 19. Typical Installation without a Bypass Switch

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

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