UNDERSTANDING UPS OPERATIONEaton 9395 UPS (450–825 kVA) Installation and Operation Manual 164201725 Rev 4 www.eaton.com/powerquality 6-27NOTE 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.UPS CABINETE9,E10,E11,E12Service 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 1BatteryConverterInverterOutputContactor(K3)FuseRectifierInputContactor(K1)Battery Contactor (K2)FuseFuseFuseUPM 4X-SlotInterface48V BatteryShunt TripInterface BoardBattery AuxRemote EPOBuilding AlarmsAlarm RelaysFI-UPM CABINETBatteryBreakerCDCCAC Outputto CriticalLoadCBATTERY SYSTEM(Not supplied with the UPS)BATTERY SYSTEM(Not supplied with the UPS)BATTERY SYSTEM(Not supplied with the UPS)BATTERY SYSTEM(Not supplied with the UPS)E6, E7,E8, E12 BackfeedContactor (K5)StaticSwitchAC Input to Bypass3 or 4 Wire A-B-CRotationFuseBypassBreaker(CB4)BE1,E2,E3AC Input to UPSRectifiers 3 WireA-B-C RotationA UPM 3UPM 2E1,E2,E3E1,E2,E3UPM 1A AUPM 4AE1,E2,E3E4,E5Figure 6‐22. Plus 1 UPS System – Four UPM, Separate Rectifier Feed, Separate Battery, Dual‐Feed Configuration, Momentary Static Switch
