Powerware 9395 UPS and Plus 1 UPS 650825 kVA - Manual (Page 30)

UPS INSTALLATION PLAN AND UNPACKING
EATON Powerware ® 9395 UPS (650–825 kVA) Installation and Operation Manual S 164201725 Rev 2 www.powerware.com 3−8
3.2.2 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.
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For external wiring, use 90°C copper or aluminum wire. Wire sizes listed in
Table 3-4 and 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.
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Wire ampacities are chosen from Table 310−16 of the NEC. Specification is for
copper wire with a 90°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 feed into this equipment uses three or four wires. The rectifier feed
into this equipment uses three wires. The phases must be symmetrical about
ground (from a Wye source) for proper equipment operation.
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If the load requires a neutral, a bypass source neutral must be provided. If the load
does not require a neutral and there is no neutral conductor connected at the
bypass input, a neutral to ground bonding jumper must be installed. DO NOT install
both a source neutral and a bonding jumper. See Table 3-4 or Table 3-5 for neutral
bonding jumper wire sizes. The bonding jumper must be copper wire.
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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, single and multiple UPMs are powered from one
common battery source. In a separate battery system, multiple UPMs are each
powered from separate battery sources.
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On an UPS configured for separate rectifier inputs, all sources that feed the
separate rectifier inputs must be derived from a common ground point.
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On an UPS configured as an Input Output Module (IOM), bypass input wiring,
termination, conduit, and bypass breaker requirements are not applicable.
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A Field Installed UPM (FI−UPM) is always designated as UPM 4.