Powerware 650825 kVA operation manual UPS System Power Wiring Preparation

UPS INSTALLATION PLAN AND UNPACKING

3.2.2UPS System Power Wiring Preparation

Read and understand the following notes while planning and performing the installation:

SRefer to national and local electrical codes for acceptable external wiring practices.

STo allow for future kVA upgrades, consider installing a derated UPS using wiring and external overcurrent protection breakers sized for a fully rated UPS.

SFor external wiring, use 90°C copper or aluminum wire. Wire sizes listed in Table 3-4and Table 3-5are 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.

SWire ampacities are chosen from Table 310−16 of the NEC. Specification is for copper wire with a 90°C rating.

SMaterial and labor for external wiring requirements are to be provided by designated personnel.

SIf 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.

SThe 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.

SIf 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 3-4or Table 3-5for neutral bonding jumper wire sizes. The bonding jumper must be copper wire.

SThe 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.

SIn 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.

SOn an UPS configured for separate rectifier inputs, all sources that feed the separate rectifier inputs must be derived from a common ground point.

SOn an UPS configured as an Input Output Module (IOM), bypass input wiring, termination, conduit, and bypass breaker requirements are not applicable.

SA Field Installed UPM (FI−UPM) is always designated as UPM 4.

3−8 EATON Powerware® 9395 UPS (650–825 kVA) Installation and Operation Manual S 164201725 Rev 2 www.powerware.com