UNDERSTANDING UPS OPERATIONEaton 9395 UPS (450–825 kVA) Installation and Operation Manual 164201725 Rev 4 www.eaton.com/powerquality 6-43Battery BreakerBatteryConverterInverterK3FuseRectifierK1K2FuseFuseFuseE6E7E8E12K5StaticSwitchFuseCB4E1E2E3CB1(optional)UPS 1A BTIECABINET(Optional)EAC Output toCritical LoadE4, E5BATTERY SYSTEMMOB 1MOB 2MOB 3MOB 4(Not suppliedwith the UPS)CE9,E10,E11,E12DBattery BreakerBatteryConverterInverterK3FuseRectifierK1K2FuseFuseFuseE6E7E8E12K5StaticSwitchFuseCB4E1E2E3CB1(optional)UPS 2A BE4, E5BATTERY SYSTEM(Not suppliedwith the UPS)CE9,E10,E11,E12DBattery BreakerBatteryConverterInverterK3FuseRectifierK1K2FuseFuseFuseE6E7E8E12K5StaticSwitchFuseCB4E1E2E3CB1(optional)UPS 3A BE4, E5BATTERY SYSTEM(Not suppliedwith the UPS)CE9,E10,E11,E12DBattery BreakerBatteryConverterInverterK3FuseRectifierK1K2FuseFuseFuseE6E7E8E12K5StaticSwitchFuseCB4E1E2E3CB1(optional)UPS 4A BE4, E5BATTERY SYSTEM(Not suppliedwith the UPS)CE9,E10,E11,E12D********NOTE This oneline does not show each UPM in the UPSs, but represents each UPS in the distributed bypass system. The internalstructure of each UPS is shown in Figure 6‐5 through Figure 6‐16, Figure 6‐21 through Figure 6‐26.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 neutralconductor 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.A – AC Input to UPS RectifierB – AC Input to BypassC – DC Input from BatteryD – UPS AC Output to Tie CabinetE – Output to Critical Load* – Overcurrent Protection supplied by customer*Figure 6‐35. Typical Distributed Bypass System – Momentary Static Switch, 3+1 and 4+0 Configurations
