Powerware 9395 UPS and Plus 1 UPS 650825 kVA - Manual (Page 15)

INTRODUCTION
EATON Powerware ® 9395 UPS (650–825 kVA) Installation and Operation Manual S 164201725 Rev 2 www.powerware.com 1−5
1.2.5 Single−Feed Kit
An optional kit is available for converting the dual−feed rectifier and bypass inputs to a
single−feed configuration. The kit consists of jumpers for each phase, and the
hardware required for installation.
1.2.6 Separate Rectifier Input
The UPS can be supplied with separate rectifier inputs for each UPM. Separate inputs
provide increased flexibility and reliability by allowing multiple input sources to supply
the UPS. Input circuit breaker CB1 is not installed with this configuration. AC input
control to the UPS and each UPM rectifier is to be provided by the customer.
1.2.7 Distributed 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 can contain three to 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.
1.2.8 Input Output Module Configuration
The UPS can be supplied in an Input Output Module (IOM) configuration without the
bypass input connections, the static switch, the motorized wraparound bypass
breaker, and the backfeed protection contactor. This configuration is primarily used in
multiple UPS parallel systems that do not need a bypass for each UPS and use a
separate System Bypass Module (SBM) to provide system bypass capabilities.
1.3 Battery 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.