Figure 52. Ups System - Common Rectifier Feed, Dual-Feed Configuration - Eaton Power Xpert 9395 550/275 Installation And Operation Manual

Understanding UPS Operation
Figure 52. UPS System – Common Rectifier Feed, Dual-Feed Configuration
E1, E2, E3
Input Breaker
(CB1)
(optional)
A B C
NOTE Callout letters , , , and
NOTE If the load requires a neutral, a bypass source neutral must be provided. DO NOT install both a source neutral and a bonding jumper.
98 Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201716—Rev 14
AC Input to
AC Input to
Bypass
UPS Rectifier
3 or 4 Wire A-B-C
3 Wire A-B-C
Rotation
Rotation
B
A
E6, E7, E8, E12
Single-Feed Kit
Fuse
(Not supplied
with the UPS)
D
map to the applicable Input/Output Ratings and External Wiring Requirements (480V or 400V Common Battery) Table in Chapter 3.
Battery Aux
48V Battery
Shunt Trip
Remote EPO
Interface Board
Static
Switch
Backfeed
Contactor (K5)
Input
Contactor
(K1)
Rectifier
Fuse
Fuse
Fuse
Inverter
Output
Contactor
(K3)
Battery
Converter
Fuse
Battery Contactor (K2)
UPM 1
E4, E5
C
Battery
Breaker
BATTERY CABINET
or BATTERY STRING
(Not supplied with the UPS)
Building Alarms
Alarm Relays
X-Slot
Interface
AC Output to
Critical Load
E9, E10, D
E11, E12
UPS
CABINET
Service Connector