Xtreme Power Conversion Corporation
M90S-4S User’s Manual
Page 15
Uninterruptible Power Supply
2.7 Internal Mechanisms
2.7.1 Breakers
At the rear panel of the cabinet, you can see AC Input/Output breakers. Refer to the diagram below.
Rear View/Output, and Input Breakers
2.7.2 Wiring Terminal Blocks
Remove all panel covers and you will see the wiring terminal block for the UPS input/output wiring, please check
below chart and table.
Terminal Block Descriptions
Item
Function
Description
AC
Terminal
Output Block (O/P-L1, O/P-L2,
O/P-N)
Connects the criti-
cal loads
Includes L1, L2 and Neutral terminals.
AC Input Block (R, T,
N)
Connects main AC
source
Includes L1, L2 and Neutral terminals.
For UPS Grounding
(PE)
For UPS grounding Includes one grounding terminal - PE.
DC
Terminal
DC Terminal Block
(BAT+, BAT-N, BAT-)
Connects an
external battery
pack
Includes
Positive (+), Negative (-) and Neutral
(N) terminals.
AC Terminal
DC Terminal