UNDERSTANDING UPS OPERATIONEaton 9395 UPS (450–825 kVA) Installation and Operation Manual 164201725 Rev 4 www.eaton.com/powerquality6-28E1,E2,E3E6, E7,E8, E12NOTE Callout letter A maps to Table 3‐8 on page 3-18. Callout letters B, C, and D map to Table 3‐5 on page 3-15.NOTE 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 conductorconnected at the bypass input, a neutral to ground bonding jumper must be installed. DO NOT install both a source neutral and a bonding jumper.UPSCABINETBackfeedContactor (K5)AC Output toCritical LoadE9, E10,E11, E12StaticSwitchAC Input to UPSRectifiers 3 WireA-B-C RotationAC Input to Bypass3 or 4 Wire A-B-CRotationFuseService ConnectorBatteryConverterInverterOutputContactor(K3)FuseRectifierInputContactor(K1)Battery Contactor (K2)FuseFuseFuseUPM 2BatteryBreakerE4, E5BatteryConverterInverterOutputContactor(K3)FuseRectifierInputContactor(K1)Battery Contactor (K2)FuseFuseFuseUPM 3BatteryBreakerE4, E5BatteryBreakerE4, E5BatteryConverterInverterOutputContactor(K3)FuseRectifierInputContactor(K1)Battery Contactor (K2)FuseFuseFuseUPM 1A BCDCCBATTERY SYSTEM(Not supplied with the UPS)BATTERY SYSTEM(Not supplied with the UPS)BATTERY SYSTEM(Not supplied with the UPS)UPM 3UPM 2E1,E2,E3E1,E2,E3UPM 1A A X-SlotInterface48V BatteryShunt TripInterface BoardBattery AuxRemote EPOBuilding AlarmsAlarm RelaysFigure 6‐23. UPS System – Three UPM, Separate Rectifier Feed, Separate Battery, Dual‐Feed Configuration, Continuous Static Switch
