UNDERSTANDING UPS OPERATION
Power Xpert
9395 UPS (450–550 kVA) Installation and Operation Manual
164201701 Rev 3
www.eaton.com/powerquality
6-18
NOTE
Callout letter
A
maps to Table 3‐6 on page 3-11. Callout letters
B
,
C
, and
D
map to Table 3‐5 on page 3-10.
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
E9,
E10,
E11,
E12
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
Battery
Breaker
E4. E5
E4. E5
Battery
Converter
Inverter
Output
Contactor
(K3)
Fuse
Rectifier
Input
Contactor
(K1)
Battery Contactor (K2)
Fuse
Fuse
Fuse
UPM 4
X-Slot
Interface
48V Battery
Shunt Trip
Interface Board
Battery Aux
Remote EPO
Building Alarms
Alarm Relays
FI-UPM CABINET
Battery
Breaker
C
D
C
AC Output
to Critical
Load
C
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
Backfeed
Contactor (K5)
Static
Switch
AC Input to Bypass
3 or 4 Wire A-B-C
Rotation
Fuse
B
E1,
E2,
E3
AC Input to UPS
Rectifiers 3 Wire
A-B-C Rotation
A
UPM 2
UPM 1
E1,
E2,
E3
A
UPM 4
A
E1,
E2,
E3
Figure 6‐15. Plus 1 UPS System – Separate Rectifier Feed, Separate Battery, Dual‐Feed Configuration