1-1
EATON
Powerware
®
9390 IAC-B and IAC-T Installation and Operation Manual
S
164201590 Rev C
powerware.com
Chapter 1
Introduction
The Powerware
®
9390 Integrated Accessory Cabinet (IAC) is designed for use with the
Powerware 9390 40–80 kVA and 100–160 kVA three-phase uninterruptible power systems
(UPSs). The IAC provides maintenance bypass, parallel tie cabinet, or parallel tie cabinet
with maintenance bypass functions with the following custom configurable features,
enabling adaptation and expansion without costly electrical rework:
쑺
Maintenance Bypass Configuration – Maintenance Bypass (MBP) and Maintenance
Isolation (MIS) breakers enable power to completely bypass the UPS power module. The
UPS module can then be safely serviced or replaced without interrupting power to
critical systems. An optional Bypass Input Breaker (BIB) and Rectifier Input Breaker (RIB)
provide a single wiring point input to the UPS as well as a convenient method for
removing power from the UPS when using the maintenance bypass to supply the load.
쑺
Parallel Redundant Configuration – Module Output Breakers (MOB) 1 and 2 enable two
UPS modules to be paralleled together for redundancy. An optional System Load
Breaker (SLB) provides output control to the critical load for the whole system.
쑺
Parallel Redundant Configuration with Maintenance Bypass – Module Output Breakers
(MOB) 1 and 2 enable two UPS modules to be paralleled together for redundancy.
Optional Maintenance Bypass (MBP) and Maintenance Isolation (MIS) breakers enable
power to completely bypass the UPS power module.
The IAC is housed in a single, free-standing cabinet, with safety shields behind the doors
for hazardous voltage protection. The cabinet matches the UPS cabinet in style and color,
and can be installed in
line-up-and-match
or
standalone
configurations. Figure 1-1 shows
the Powerware 9390 IAC.
1.1 Configurations
The following IAC configurations are possible:
쑺
IAC with MBP and MIS
쑺
IAC with MBP, MIS, and BIB
쑺
IAC with MBP, MIS, BIB, and RIB
쑺
IAC with MOB 1 and MOB 2
쑺
IAC with MOB 1, MOB 2, and SLB
쑺
IAC with MOB 1, MOB 2, MBP, and MIS
Summary of Contents for Powerware 9390 IAC-B
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