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3.2.3
Eaton Power Xpert 9395P UPS (300 kVA, 300 kW) Installation and Operation Manual
UPS System Power Wiring Preparation
Read and understand the following notes while planning and performing the
installation:
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Refer to national and local electrical codes for acceptable external wiring practices.
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To allow for future kVA upgrades, consider installing a derated UPS using wiring
and external overcurrent protection breakers sized for a fully rated UPS.
S
For external wiring, use 75°C copper or aluminum wire. Wire sizes listed in
Table 3‐4 through Table 3‐5 are for copper wiring only. If wire is run in an ambient
temperature greater than 30°C, higher temperature wire and/or larger size wire
may be necessary. Wire sizes are based on using the specified breakers.
S
Wire ampacities are chosen from Table 310.15(b) (16) of the National Electrical
Code
(NEC
). Specification is for copper wire with a 75°C rating.
®
®
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Material and labor for external wiring requirements are to be provided by
designated personnel.
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If installing a maintenance bypass, a minimum of two separate feeds with
upstream feeder breakers, or a single feed with two upstream feeder breakers,
must be provided: one for the UPS or rectifier input breaker (RIB) (if installed) and
one for the maintenance bypass input. DO NOT use a single feed or a single feeder
breaker to supply both the UPS or RIB and the maintenance bypass. If a bypass
input breaker (BIB) is installed in the maintenance bypass and a single-feed UPS is
being installed, a single feed to the maintenance bypass is acceptable for supplying
both the UPS and the bypass.
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The bypass and rectifier feeds into this equipment use three wires. The phases
must be symmetrical about ground (from a Wye source) for proper equipment
operation.
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The Eaton 9395P 480V unit is designed for operation on a grounded-wye source of
supply. There is no additional connection point for a neutral conductor. The output
of this UPS will not directly support phase to neutral loads.
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The ISBM and UPM sections are shipped with debris shields covering the
ventilation grills on top of the sections. Do not remove the debris shields until
installation is complete. However, remove the shields before operating the UPS.
Once the debris shields are removed, do not place objects on the ventilation grills.
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In a common battery system, all UPMs are powered from one common battery
source. In a separate battery system, each UPM is powered from separate battery
sources.
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UPSs in distributed bypass and parallel systems must use a separate battery
system for each UPS.
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On a UPS configured as an Input Output Module (IOM), requirements for bypass
input wiring, termination, conduit, and bypass breaker are not applicable.
If the power rating listed on the nameplate of the installed UPS is not found in the
following tables, wire the UPS using the fully rated specifications. Otherwise,
calculate the required wire, conduit, and breaker sizes using the following guidelines
in addition to those already listed in paragraph 3.2.3:
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Select wire size according to the UPS nameplate.
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Do not use wire larger than the largest size listed in Table 3‐4 through Table 3‐5.
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Use terminal recommendations from Table 3‐6 through Table 3‐9.
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Size and number of conduits must not exceed those listed in Table 3‐10.
UPS INSTALLATION PLAN AND UNPACKING
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P-164000563 Rev 1 www.eaton.com/powerquality
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