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9
Powerware
®
9120 User's Guide S 05147426 A Uncontrolled Copy
Installing the Hardwired UPS
W A R N I N G
Only qualified service personnel (such as a licensed electrician) should perform the
electrical installation. Risk of electrical shock.
The Powerware 9120 requires a dedicated branch circuit that meets the
following requirements:
S 40A circuit with short circuit and overcurrent protection
S 100-127 Vac
S Single-phase
S 50/60 Hz
S Flexible metal conduit is recommended for ease of service and
maintenance
To hardwire the UPS:
1. If you are installing power management software, connect your
computer to the UPS communication port using the supplied
communication cable.
2. If installing an optional Extended Battery Module, plug the
EBM cable into the battery connector on the EBM rear panel.
3. Plug the other end of the EBM cable into the battery connector
on the UPS rear panel.
4. If additional EBMs are to be installed, plug the EBM cable of the
second cabinet into the battery connector on the first EBM.
Repeat for each additional EBM.
5. Switch off utility power at the distribution point where the UPS
will be connected. Be absolutely sure there is no power.