HP PowerTrust A3589A, Manual

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1-2 Chapter 1
Overview
Introduction
Introduction
The HP PowerTrust UPS is a battery backup device that switches to battery power when
input AC power fails or when it falls below or goes above a specified utility voltage level.
This allows your computer system to function through brief power failures, or allows for an
orderly system shutdown during extended power failures.
There are three basic components of the UPS: Electronics Unit, Battery Box, and
Service Bypass Unit. See Figure 1-1.
The PowerTrust also provides internal overtemperature sensing to either warn of potential
internal damage to the UPS, or to shut off the UPS to avoid equipment damage.
Each PowerTrust UPS can be ordered in a factory-integrated expansion cabinet as part of
a supported HP 3000 or HP 9000 computer system order, or as a field-installable upgrade
to an existing HP 3000 or HP 9000 system. The entire unit is designed to be installed at
the bottom of the Hewlett-Packard A1883A, A1884A, A1896A, or A1897A expansion
cabinet (19-inch rack) for any supported system.
A UPS-compatible Power Distribution Unit (PDU or "power strip") must be installed
within the expansion cabinet containing receptacles for the device(s) to be protected by the
UPS. Both the factory-integrated and field-integrated versions of the PowerTrust UPS
must be used with a UPS-compatible PDU.
Refer to HP 3000 and HP 9000 Configuration Guides for descriptions of supported systems
and peripherals.
Figure 1-1 shows the 5.5 kVA UPS installed in an expansion cabinet.