UNDERSTANDING UPS OPERATION
Power Xpert
9395 UPS (450–550 kVA) Installation and Operation Manual
164201701 Rev 3
www.eaton.com/powerquality
6-11
Input Breaker
(CB1)
(optional)
X-Slot
Interface
E1, E2, E3
E6, E7,
E8, E12
48V Battery
Shunt Trip
NOTE
Callout letters
A
,
B
,
C
, and
D
map to Table 3‐4 on page 3-9.
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.
UPS CABINET
Backfeed
Contactor (K5)
AC Output
to Critical
Load
E9,
E10,
E11,
E12
Static
Switch
AC Input to
UPS Rectifier
3 Wire A-B-C
Rotation
AC Input to
Bypass
3 or 4 Wire A-B-C
Rotation
Interface Board
Battery Aux
Remote EPO
Building Alarms
Alarm Relays
Fuse
Service Connector
Battery
Converter
Inverter
Output
Contactor
(K3)
Fuse
Rectifier
Input
Contactor
(K1)
Battery Contactor (K2)
Fuse
Fuse
Fuse
UPM 1
Battery
Breaker
E4, E5
Battery
Converter
Inverter
Output
Contactor
(K3)
Fuse
Rectifier
Input
Contactor
(K1)
Battery Contactor (K2)
Fuse
Fuse
Fuse
UPM 2
(Not supplied with the UPS)
Battery
Converter
Inverter
Output
Contactor
(K3)
Fuse
Rectifier
Input
Contactor
(K1)
Battery Contactor (K2)
Fuse
Fuse
Fuse
UPM 4
FI-UPM CABINET
BATTERY SYSTEM
A
B
C
D
Single-Feed Kit
(Not supplied
with the UPS)
Figure 6‐8. Plus 1 UPS System – Common Rectifier Feed, Common Battery, Dual‐Feed Configuration
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