2 Eaton 93E UPS (20–30 kVA, 208/220V) Installation and Operation Manual 164000301—Rev 04
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The UPS has many standard features that provide cost-effective and consistently reliable power protection. The
descriptions in this section provide a brief overview of the UPS standard features.
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Power wiring can be routed to the back of the cabinet with connections made to easily accessible terminals.
Control wiring can be installed using conduit through the bottom of power terminal cover base or by routing
wiring through the power terminal cover base wiring channels and must be installed in accordance with Class 1
wiring methods.
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The control panel, located on the front of the UPS, contains a liquid crystal display (LCD) and pushbutton
switches to control the operation of the UPS and to display the status of the UPS system. See
Chapter 7 UPS Operating Instructions, for additional information.
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• Building Alarm Monitoring – Up to three inputs in the UPS are available to connect the facility's alarm
system contacts. Some system configurations may limit the number of inputs available. The UPS uses
these inputs to monitor the building alarms in addition to the UPS status.
• Mini-Slot Communication Bays – Two communication bays are standard equipment. One to two
optional Mini-Slot
®
connectivity cards can be installed in the UPS module at any time. Mini-Slot cards are
quickly installed at the rear of the UPS and are hot-pluggable.
For additional information on these topics, see Chapter 8 Communication.
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The 93E Series UPS offers a High-Efficiency (HE) normal mode with double-conversion on demand that allows
the UPS to operate in standby bypass mode. This mode allows the 93E UPS to achieve 98% efficiency while
still protecting the load. High-efficiency mode is the default normal operating mode. See
Chapter 7 UPS Operating Instructions, for additional information.
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The battery system provides emergency short-term backup power to safeguard operation during brownouts,
blackouts, and other power interruptions. The battery system is equipped with lead-acid batteries.
The 93E–30/20 and 93E–30/30 UPS battery systems use internal batteries with External Battery Cabinet (EBC)
capability. Up to two Eaton 93E External Battery Cabinets (EBCs) can be added to UPS system. The EBCs are
connected in parallel with the internal batteries to provide extended run time.
The 93E–20 UPS (reduced battery sting model) battery system uses internal batteries only with no EBC
capability.
All UPSs in a parallel system must have the same battery configuration.
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A three-stage charging system increases battery service life by optimizing recharge time, and protects batteries
from damage due to high current charging and inverter ripple currents. Charging at high currents can overheat
and damage batteries.
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Contact an Eaton sales representative for information about the following options.
Introduction
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