3 6
Chapter 5 Installation and Wiring
(Figure 5-13: Single Unit Dual Input Wiring Diagram_40/ 60kVA)
1 2 3 4
E X T . S W I T C H
S T A T U S
BATTERY INPUT
144V DC
144V DC
Front View - 40/ 60kVA
Rear View - 40/ 60kVA
R S T
N
R S T
N
R S T
N
R S T
N
Connects the
main AC source
Connects the
bypass source
Connects the
critical loads
Bypass
Breaker
Input
Breaker
Manual
Bypass
Breaker
Output
Breaker
Connects the external
battery cabinet
For the external
battery cabinet’s
grounding
-
+
N
For the UPS
grounding
For the
critical loads’
grounding
External Manual
Bypass Breaker
and Output Breaker
ON/ OFF Detection
4
Follow
step
7
stated in section
Single Input (Single Unit)
.
