Operating instructions

Understanding UPS Operation
Eaton 9E UPS (40–60 kVA, 208/220V) Generation 3 Installation and Operation Manual P-164000302—Rev 1 www.eaton.com/powerquality 5-9
Figure 5-7. UPS System Oneline – Internal and External Batteries
Battery
Breaker
EXTERNAL BATTERY
CABINET
(Not supplied with the UPS)
NOTE Callout letters A, B, C, and D map to Table 3-5.
AC Input to
Bypass 4 Wire
A-B-C Rotation
(optional)
L1, L2, L3, N
Input Breaker
Internal Single-Feed
Jumper
L1, L2, L3, N
AC Input to
UPS Rectifier
4 Wire A-B-C
Rotation
A
B
Pull Chain
Remote EPO
Parallel CAN
Mini-Slot
Interface
Interface Board
UPM 2
UPM 1
Internal Battery
Static
Switch
Rectifier
Fuse
Fuse
Inverter
Battery
Converter
Fuses
Rectifier
Fuse
Fuse
Inverter
Battery
Converter
Fuses
L1, L2,
L3, N
AC Output to
Critical Load
D
UPS CABINET
Battery Breaker
C
External
Battery Input
Bypass
Switchgear
Rectifier
Switchgear
Inverter
Switchgear
Battery
Switchgear
Rectifier
Switchgear
Inverter
Switchgear
Battery
Switchgear