C750 & C750R User
Manual Page 37
Parallel system installed by 20kVA UPS (conductor cross-section, unit: mm
²
)
UPS
number
Mode
Main input
Bypass input
Gr
o
u
n
d
w
ire
Output
Ba
tte
ry
w
ire
Ba
tte
ry
Gr
o
u
n
d
L
w
ire
N
w
ire
L
w
ire
N
w
ire
L
wi
re
N
w
ire
Gr
o
u
n
d
2 UPS
3-3
25
25
16
16
25
16
16
16
35
35
3-1
25
25
70
70
70
70
70
70
35
35
1-1
120
120
70
70
120
70
70
70
35
35
3 UPS
3-3
50
50
25
25
50
25
25
25
70
70
3-1
50
50
150
150
150
150
150
150
70
70
1-1
240
240
150
150
240
150
150
150
70
70
Note:
1.
Please select the larger cross-section conductor for the parallel system ‘AC IN cable’ in the single source
application.
2. In the three-phase output mode, if the load is an unbalanced load, the L wire of the bypass and output may
exceed the rated current, and the maximum rated current will be 1.732 times. The corresponding protection
device and wiring cable must be determined according to the standards of the region and the actual situation of
the user.
4.1.2 Wiring for AC cable (AC source to UPS)
AC cable wiring is shown in below diagrams for different configuration
3-3 configuration (single source)
