Powerware 9315 - Manual (Page 7)

1 Powerware 9315 Parallel Redundant System I & O
164202013 Rev. D 041599
Introduction
The parallel redundant system allows two UPS modules to operate in parallel and
as backup for each other. When one UPS module is taken out of service for
maintenance or is not operating properly, the redundant UPS module continues to
supply uninterrupted power to the critical load. The parallel redundant system
refers to the parallel cabinet in conjunction with the UPS modules. The parallel
redundant system consists of one parallel cabinet, two identical UPS cabinets, and
up to four battery cabinets per UPS. Each UPS module may have its own battery
cabinet(s), or may share the same battery cabinet(s) with the other UPS module.
NOTE: The installation procedures of this manual only refer to the parallel cabinet
and its connection to the UPS cabinets for parallel redundant operation. The
operation section of this manual refers to the operation for the parallel
cabinet and the UPS system when in parallel. For full installation and
operation of the UPS system and battery installation, refer to the
PowerwareÒ 9315 Installation, PowerwareÒ 9315 Operation, and the
PowerwareÒ Series 685 and 1085 Auxiliary Battery Cabinets
Installation manuals provided with the UPS system and battery cabinet
accessory.
The parallel cabinet is a free-standing cabinet. Figure 1 shows a typical parallel
cabinet.
Figure 1. Typical Parallel Cabinet