Operating instructions

Understanding UPS Operation
5-8 Eaton 9E UPS (40–60 kVA, 208/220V) Generation 3 Installation and Operation Manual P-164000302—Rev 1 www.eaton.com/powerquality
Figure 5-6. UPS System Oneline – Internal Battery and External Battery Capable
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
External
Battery Input
NOTE Callout letters A, B, C, and D map to Table 3-5.
C
Bypass
Switchgear
Rectifier
Switchgear
Inverter
Switchgear
Battery
Switchgear
Rectifier
Switchgear
Inverter
Switchgear
Battery
Switchgear