INTRODUCTION

1.2.4Distributed Bypass System

There are two types of redundancy: UPS based (based on the number of UPS units) and UPM based (based on the number of UPMs). Each UPS contains three or four UPMs.

A distributed bypass UPS system with two to five UPS units can be installed to provide a 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 UPM is taken out of service for maintenance or is not operating properly, a redundant UPM continues to supply uninterrupted power to the critical load. A Powerware Hot Sync® Controller Area Network (CAN) Bridge Card provides connectivity and operational mode control. The distributed bypass system consists of two to five UPS units each with a parallel CAN card, and a customer−supplied tie cabinet or load distribution panel to act as a tie point. The tie cabinet should contain Module Output Breakers (MOBs) with dual auxiliary contacts for control of the system.

1.2.5Monitoring and Communication

SRemote Monitor Panel II (RMP II) – An optional RMP II contains backlit status indicators and a local horn, allowing monitoring of the operational status and alarm condition of the UPS from virtually any location within the facility.

SRelay Interface Module II (RIM II) – An optional RIM II uses relay contact closures to indicate the UPS operating status and alarm condition.

SSupervisory Contact Module II (SCM II) – An optional SCM II establishes an interface between the UPS system equipment and the customer’s monitor.

SX−Slot Cards – Optional X−Slot cards support several protocols, such as SNMP, HTTP, IBM® AS/400®, and Modbus®.

SeNotify Remote Monitoring and Diagnostics Service – An optional service that provides 24/7 remote monitoring of 43 alarms, temperature/humidity and battery charge information, daily heartbeat check, and monthly report. The service also provides customer notification of significant alarms, remote diagnostics, and dispatch of technicians. A ConnectUPS−X Web/SNMP Card is required in an X−Slot communication bay. An optional Powerware Environmental Monitoring Probe (EMP) is required for temperature/humidity monitoring.

See Chapter 8, communication features.

1.3Battery System

Although not provided with the UPS, a battery system is required to provide emergency short term−backup power to safeguard operation during brownouts, blackouts, and other power interruptions. The battery system should be equipped with lead-acid batteries. An external battery disconnect switch must be used.

The UPMs may be powered with either a common or separate battery system. In a common battery system, single and multiple UPMs are powered from one common battery source. In a separate battery system, multiple UPMs are each powered from separate battery sources.

UPMs in distributed bypass and parallel systems must use a separate battery system.

A supplemental 48 Vdc shunt trip signal for the battery disconnect device is provided by the UPS, but is not required for normal operation.

EATON Powerware® 9395 UPS (1000–1100 kVA) Installation and Operation Manual S 164201764 Rev 1 www.powerware.com

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Powerware 10001100 kVA operation manual Battery System, Distributed Bypass System, Monitoring and Communication