22 Eaton 93E UPS (20–30 kVA, 208/220V) Installation and Operation Manual 164000301—Rev 04
• Use Class 1 wiring methods (as defined by the NEC) for interface wiring from 30V to 600V. The wire
should be rated for 600V, 1A minimum. 12 AWG maximum wire size.
• Use Class 2 wiring methods (as defined by the NEC) for interface wiring up to 30V. The wire should be
rated for 24V, 1A minimum.
• Because of the REPO and building alarm wiring route in the UPS cabinet, the wire should be rated for a
minimum of 300V.
• Use twisted-pair wires for each input and return or common.
• All interface wiring and conduit is to be supplied by the customer.
• When installing external interface wiring between a REPO or building alarm and the UPS interface
terminals, conduit must be installed between each device and the UPS cabinet.
• Interface 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 between the UPS and SIAC-B, IAC-
T, or IAC-TB.
• If using the power terminal wiring channel, keep interface wiring separate from power wiring or use
shielded wire.
• If using conduit, install the interface wiring in separate conduit from the power wiring.
• All building alarm inputs require an isolated normally-open contact or switch (rated at 24 Vdc, 20 mA
minimum) connected between the alarm input and common terminal. All control wiring and switch
contacts are customer-supplied.
• LAN and telephone drops for use with Mini-Slot connectivity cards must be supplied by the customer.
• The REPO feature opens all switchgear in the UPS cabinet and isolates power from your critical load. Local
electrical codes may also require tripping upstream protective devices to the UPS.
• The REPO switch must be a latching-type switch not tied to any other circuits.
• A jumper wire must be connected between pins 3 and 4 on the REPO terminal block if using a normally-
closed REPO switch.
• REPO wiring should be a minimum of 22 AWG and a maximum of 14 AWG.
• The REPO switch wiring must be in accordance with NEC Article 725 Class 2 requirements.
• The maximum distance between the REPO and the UPS cannot exceed 150 meters (500 feet).
33..33 BBaatttteerryy TTyyppee
The battery types listed in Table 10 are supplied in the UPS Cabinet and external Battery Cabinet. When
purchasing UPS Cabinet or external Battery Cabinet without batteries, only the following types are
recommended. Use of any other battery type inside Eaton cabinets will void the product warranty. When
replacing batteries use the same manufacturer and part number originally supplied with the unit to ensure
correct harness fit and terminal landing.
Table 10. Battery Type
Battery Manufacturer CSB Battery Technologies Inc. G.S. Yuasa
Battery Model HRL1234WF2FR REW45-12FR
Battery Quantity 93E–20
72 72
Battery Quantity 93E–30/20
108 108
Battery Quantity 93E–30/30
108 108
UPS Installation Plan and Unpacking
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