Introduction
Eaton 93PM UPS (20–100 kW, 480V – 100 kW Frame) Installation and Operation Manual P-164000227—Rev 6 www.eaton.com/powerquality 1-5
1.2.3 Sidecar Integrated Accessory Cabinet-Bypass
A Sidecar Integrated Accessory Cabinet-Bypass (SIAC-B) provides maintenance bypass functions. The SIAC-B
is available in two, three, or four breaker configurations enabling power to completely bypass the UPS. The UPS
can then be safely serviced or replaced without interrupting power to critical systems. The four breaker
configuration provides a convenient method for removing power from the UPS when using the maintenance
bypass to supply the load. The SIAC-B is housed in a cabinet attached to the UPS cabinet. The SIAC-B may be
installed on either the right or left side of the UPS cabinet. The SIAC-B can also be used for top entry wiring
access.
1.2.4 Sidecar Integrated Accessory Cabinet-Tie
A Sidecar Integrated Accessory Cabinet-Tie (SIAC-T) provides the ability to parallel up to four UPSs together for
increased capacity and/or redundant capability. The SIAC-T is housed in a cabinet attached to the UPS cabinet.
The SIAC-T may be installed on either the right or left side of the UPS cabinet. The SIAC-T can also be used for
top entry wiring access.
1.2.5 Sidecar Integrated Accessory Cabinet-Tie Bypass
A Sidecar Integrated Accessory Cabinet-Tie Bypass (SIAC-TB) provides the ability to parallel two UPSs together
for increased capacity and/or redundant capability. In addition, maintenance bypass functions enable power to
completely bypass the UPS power module. The SIAC-TB is housed in a cabinet attached to the UPS cabinet.
The SIAC-TB may be installed on either the right or left side of the UPS cabinet. The SIAC-TB can also be used
for top entry wiring access.
1.2.6 Integrated Accessory Cabinet-Tie
An Integrated Accessory Cabinet-Tie (IAC-T) provides the ability to parallel up to four UPSs together for
increased capacity and/or redundant capability. The IAC-T is housed in a single, free-standing cabinet designed
for line-up-and-match installation, but may be installed separate from the UPS cabinet. The recommended
installation location for an adjacent IAC-D is to the left of the UPS cabinet.
1.2.7 Parallel System
A parallel UPS system with up to eight 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 built-in
Controller Area Network (CAN) provides connectivity for system metering and operational mode control. The
parallel system consists of two to four UPSs each with a parallel CAN, and an IAC-T, SIAC-T, or SIAC-TB to act
as a tie point and to control the output.
1.2.8 Top Entry Wiring Sidecar
If required, a sidecar is available for top entry power wiring. The sidecar performs the function of a wireway
routing the wires to the terminals mounted at the bottom of the UPS cabinet. The sidecar can be installed on
the left or right side of the UPS cabinet.
NOTE All UPSs in a parallel system must have the same battery configuration. Each UPS
requires a separate battery cabinet.
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