UDD-SD-116/ Release Date: 31.12.2014/Rev No: 1/Rev. Date: 27.04.2015 18
N
BAT-
L
N
L
BAT+
N
BAT-
L
N
L
BAT+
B
A
T
1
B
A
T
2
I
n
p
u
t
O
u
t
p
u
t
Wiring diagram for two UPS parallel system
N
BAT-
LN
LBAT+
N
BAT-
LN
LBAT+
I
n
p
u
t
B
A
T
1
B
A
T
2
N
BAT-
LN
L
BAT+
O
u
t
p
u
t
B
A
T
3
Wiring diagram for thee UPS parallel system
④ If the UPS is the standard type, each UPS has batteries inside already. If the UPS is the long-
run type, each UPS should be equipped a individual battery pack.
⑤ After installation, check all the wiring carefully, be sure to confirm correct, then can operate
the system.
3.4.2 Parallel system operation and maintenance
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