User`s guide

Eaton 9355 Parallel UPS (10/15 kVA) User's Guide S 164201601 Rev B www.eaton.com/powerquality
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Chapter 1 Introduction
A parallel system with up to four uninterruptible power supplies (UPSs)
can be installed to provide a parallel capacity and/or redundant system.
This load sharing system provides more capacity than a single UPS and
can provide backup, depending on the load and configuration. In addition,
when one UPS is taken out of service for maintenance or is not
operating properly, a redundant UPS continues to supply uninterrupted
power to the critical load. A parallel Powerware Hot Sync
®
CAN Bridge
Card provides connectivity for system metering and operational mode
control. The parallel system consists of two to four UPSs, each with a
parallel CAN Bridge Card and a parallel cabinet.
Figure 1 shows the Eaton 9355 UPS UPS and an optional Extended
Battery Module (EBM).
Figure 1. The Eaton 9355 UPS UPS and EBM (3-High Cabinets Shown)