UNDERSTANDING UPS OPERATIONEaton 9395 UPS (450–825 kVA) Installation and Operation Manual 164201725 Rev 4 www.eaton.com/powerquality 6-11Input Breaker(CB1)(optional)X-SlotInterfaceE1, E2, E3 E6, E7,E8, E1248V BatteryShunt TripNOTE Callout letters A, 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 toUPS Rectifier3 Wire A-B-CRotationAC Input toBypass3 or 4 Wire A-B-CRotationInterface BoardBattery AuxRemote EPOBuilding AlarmsAlarm RelaysFuseService 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 1BypassBreaker(CB4)A BCDCCBATTERY SYSTEM(Not supplied with the UPS)BATTERY SYSTEM(Not supplied with the UPS)BATTERY SYSTEM(Not supplied with the UPS)Single-Feed Kit(Not suppliedwith the UPS)Figure 6‐6. UPS System – Three UPM, Common Rectifier Feed, Separate Battery, Dual‐Feed Configuration, Momentary Static Switch
