MY-A Series (10kVA-20kVA) UPS
User Manual
3 Installation
41
Figure3-22
Extension battery wiring assembly of 15kVA/20kVA
The external battery wiring of 10kVA don't need the extension battery wiring assembly, it is connecting
to wiring terminal bar directly.
3.5.3 Wiring of Parallel System
Step 1
Install the battery and UPS of parallel system separately according to
Step 2
Connect the wires of input, bypass, output and battery in parallel system, as shown in Figure3-23 or
10kVA
UPS 1
UPS 2
INPUT
A
B
C
N
BYPASS
A
B
C
OUTPUT
A
B
C
N
EXTERNAL
BATTERY
+
N
-
N
DC breaker 1
DC breaker 2
INPUT
A
B
C
N
BYPASS
A
B
C
OUTPUT
A
B
C
N
EXTERNAL
BATTERY
+
N
-
N
M
a
in
s
in
p
u
t A
M
a
in
s
in
p
u
t B
M
a
in
s
in
p
u
t C
M
a
in
s
in
p
u
t N
B
a
tte
ry
+
B
a
tte
ry
-
B
a
tte
ry
N
B
y
p
a
s
s
N
B
y
p
a
s
s
A
B
y
p
a
s
s
B
B
y
p
a
s
s
C
O
u
tp
u
t A
O
u
tp
u
t B
O
u
tp
u
t C
O
u
tp
u
t N
G
ro
u
n
d
in
g
B
a
tte
ry
+
B
a
tte
ry
N
B
a
tte
ry
-
Figure3-23
Parallel system wiring diagram of 10kVA
