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Eaton 93E UPS 15-80 kVA (380/400/415 V)
Installation and Operation Manual
© Eaton Corporation plc 2015. All rights reserved.
Revision: 001
Document ID: 614-01975-00
40 (133)
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For external wiring, use a minimum of 70°C copper cable. Cable
sizes listed Table 5 are for copper cable only. If cables are run in an
ambient temperature greater than 30°C, higher temperature cable
and/or larger size wire may be necessary. Cable sizes are based on
using the specified breakers.
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If installing an external maintenance bypass, all feeds to the UPS
including the Rectifier Input Breaker (RIB) (if installed) must have a
service disconnect independent of the maintenance bypass power
path. Most maintenance bypass solutions provide UPS input feeds
derived from but isolated from the maintenance bypass power path.
If the maintenance bypass solution being installed does not provide
such functionality, DO NOT use a single feeder breaker to supply
both the UPS and the maintenance bypass.
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The bypass feed into this equipment uses 5 wires (3 line
conductors, a neutral conductor and a protective earthing
conductor). The rectifier feed into this equipment uses 4 wires (3
line conductors and a protective earthing conductor). The phases
must be symmetrical about ground (from a Wye/Star source) for
proper equipment operation.
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Parallel UPS input cable size requirements and output cable size
requirements from the UPSs to the tie cabinet are the same as
those for single systems.
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This device is not equipped with its own mains separation device.
Install a readily accessible disconnect device in all fixed input wiring.
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Install a proper 3-pole overcurrent disconnect device before
connecting to the UPS. The disconnect device shall disconnect
simultaneously all line conductors of the AC mains supply.
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Do not disconnect neutral. Neutral is required for system operation.
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If a disconnect device interrupts the neutral conductor, it shall
simultaneously interrupt all line conductors.
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When single-phase current exceeds 100 A, switches of protective
atmosphere must be equipped with arc-control device. It should be
D-curve air switch with UL certification according to the customer
requirement.