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25-75 kW

User's and Installation Guide

3.2.3 UPS System Interface Wiring Preparation

Control wiring for features and options should be connected at the customer interface terminal blocks located

on top front of the UPS, behind the door.

DANGER

Donotdirectlyconnectrelaycontactstothemainsrelatedcircuits.Reinforcedinsulationtothemainsisrequired.

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

• Allinterfacewiringistobeprovidedbythecustomer.

• WheninstallinginternalinterfacewiringtoMini-slotterminals,routethewiringthroughtheinternal

opening in the Mini-slot communication bay.

• Allsignalinputsorremotefeatures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 relay and switch contacts are customer-supplied. Use twisted-pair wires for each alarm input and

common.

• Thesignalinputscanbeprogrammedtodisplaythealarmfunctionalname.

• LANandtelephonedropsforusewithMini-slotcardsmustbeprovidedbyfacilityplannersorthe

customer.

• TheUPSBatteryAuxand24VDCShuntTripsignalwiringfromtheUPStotheDCsourcedisconnect

device is optional.

• BatteryAuxand24VDCShuntTripwiringshouldbeaminimumof1.5mm².

• TheRemoteEPOfeatureopensallswitchgearintheUPScabinetandisolatespowerfromyourcriti-

cal load. Local electrical codes may also require tripping upstream protective devices to the UPS.

• TheRemoteEPOswitchmustbeadedicatedswitchnottiedtoanyothercircuits.

• Ajumperwiremustbeconnectedbetweenpins1and2onconnectorEPO,ifthenormallyclosed

(NC) remote EPO contact is used.

• RemoteEPOwiringshouldbeaminimumof0.75mm²andamaximumof2.5mm².

• ThemaximumdistancebetweentheRemoteEPOandtheUPScannotexceed150meters.

• Alarmrelaycontactshaveamaximumcurrentratingof5Aandaswitchedvoltageratingof30VAC

(RMS) and 30 VDC.

• Alarmrelaywiringshouldbeaminimumof0.75mm².

Eaton 93PR Series User And Installation Guide

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