Parallel System; Monitoring And Communication; Maintenance Bypass; Battery System - Eaton 9E Installation And Operation Manual

1.2.3 Parallel System

A parallel UPS system with up to four 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
Controller Area Network (CAN) Bridge provides connectivity for system metering and operational mode
control. The parallel system consists of two to four UPSs each with a parallel CAN Bridge, and a Tie Cabinet or
System Parallel Module to act as a tie point and to control the output.

1.2.4 Monitoring and Communication

Mini-Slot Cards – Optional Mini-Slot cards support several protocols, such as SNMP , HTTP , Modbus
RS232.See Chapter 7 , "Communication, " for additional information on monitoring and communication
features.

1.2.5 Maintenance Bypass

The optional internal Maintenance Bypass for 80-120kVA models consists of input, output and bypass
switches used to control the AC input to the UPS the inverter output, and a Maintenance Bypass switch used
to partially isolate the UPS so that a limited number of components can be serviced without interrupting power
to critical systems.
1.3

Battery System

The battery system is in an external cabinet. The battery system provides emergency short-term backup power
to safeguard operation during brownouts, blackouts, and other power interruptions. The battery system is
equipped with lead-acid batteries.
1.4

Basic System Configurations

The following basic UPS system configurations are possible:
• Single UPS with one to four external battery cabinets
• Single UPS with external batteries and accessory cabinets
The UPS system configuration can be enhanced by adding optional accessories such as a
Remote Emergency Power-off (REPO) control or Mini-Slot communication cards.
1.5

Using This Manual

This manual describes how to install and operate the Eaton 9E 80-200 kVA. Read and understand the
procedures described in this manual to ensure trouble-free installation and operation. In particular, be
thoroughly familiar with the REPO procedure (see paragraph 6.3.13).
The information in this manual is divided into sections and chapters. The system, options, and accessories
being installed dictate which parts of this manual should be read. At a minimum, Chapters 1 through 4
and Chapter 6 should be examined.
Read through each procedure before beginning the procedure. Perform only those procedures that apply to
the UPS system being installed or operated.
Eaton 9E UPS (80-200 kVA, 380/400/415V) Installation and Operation Manual
Introduction
and
®
1-3