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Understanding UPS Operation
AC Input to
UPS Rectifier
4 Wire A-B-C
Rotation
A,B
Pull Chain
Remote EPO
Parallel CAN
Mini-Slot
Interface
L1, L2,
L3, N
Interface Board
Input Switch
(Optional)
Backfeed Contactor
Static
Switch
Fuse
Input
relay
Rectifier
Inverter
MBS
Battery
relay
Output
relay
Fuse
Output Switch
L1, L2,
L3, N
AC Output to
D
Critical Load
(OPTIONAL)
INTERNAL BATTERY
Fuse
disconnector
Battery
relay
Fuse
UPS
CABINET
C
Battery
Breaker
NOTE
Callout letters
A,B,C,
and
D
map to Table 3-5.
EXTERNAL BATTERY
CABINET
Figure 5-6. UPS System One line (Single Input)
47
Eaton 93E XL UPS (10-40kVA, 380/400/415V) Installation and Operation
Summary of Contents for 93E XL
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