Understanding UPS Operation
Eaton
®
Power Xpert
®
9395P-900 UPS Installation and Operation Manual P-164000501—Rev 09 www.eaton.com/powerquality 6-19
Figure 6-14. Three UPM, Common Rectifier Feed, Separate Battery, IOM Configuration
Input Breaker
(CB1)
(optional)
X-Slot
Interface
E1, E2, E3
48V Battery
Shunt Trip
NOTE Callout letters A, C, and D map to Table 3‐7 .
UPS CABINET
AC Output
to Critical
Load
E9,
E10,
E11,
E12
AC Input to
UPS Rectifier
3 Wire A-B-C
Rotation
Interface Board
Battery Aux
Remote EPO
Building Alarms
Alarm Relays
Service Connector
Battery
Converter
Inverter
Output
Contactor
(K3)
Fuse
Rectifier
Input
Contactor
(K1)
Battery Contactor (K2)
Fuse
Fuse
Fuse
UPM 3
Battery
Breaker
E4, E5
(Not supplied with the UPS)
Battery
Converter
Inverter
Output
Contactor
(K3)
Fuse
Rectifier
Input
Contactor
(K1)
Battery Contactor (K2)
Fuse
Fuse
Fuse
UPM 2
Battery
Converter
Inverter
Output
Contactor
(K3)
Fuse
Rectifier
Input
Contactor
(K1)
Battery Contactor (K2)
Fuse
Fuse
Fuse
UPM 1
BATTERY SYSTEM
A
C
D
Battery
Breaker
E4, E5
(Not supplied with the UPS)
BATTERY SYSTEM
C
Battery
Breaker
E4, E5
(Not supplied with the UPS)
BATTERY SYSTEM
C