Chapter 1 | Introduction |
A parallel system with up to three 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® Contoller Area Network (CAN) Bridge Card provides connectivity for system metering and operational mode control. The parallel system consists of two or three UPSs, each with a CAN Bridge Card and a parallel tie cabinet.
Figure 1 shows the Powerware 9155 UPS and an optional Extended
Battery Module (EBM).
Figure 1. The Powerware 9155 UPS and EBM
EATON Powerware® 9155 Parallel UPS | 1 |