20
Recommended cable minimum cross-sectional area
(unit: mm2)
UPS
power
rating
Input/
Output
Mode
Input
Output
Battery
Main input
Bypass input
Grou
nd
w
ire
L w
ire
N w
ire
L w
ire
N w
ire
L w
ire
N w
ire
Grou
nd
w
ire
+/N
/-
w
ire
Grou
nd
w
ire
10000VA
3-3
4
4
4
4
10
4
4
4
10
10
3-1
4
4
10
10
10
10
10
10
10
10
1-1
16
16
10
10
16
10
10
10
10
10
15000VA
3-3
6
6
6
6
10
6
6
6
10
10
3-1
6
6
16
16
16
16
16
16
10
10
1-1
35
35
16
16
35
16
16
16
10
10
20000VA
3-3
10
10
10
10
10
10
10
10
10
10
3-1
10
10
25
25
25
25
25
25
10
10
1-1
50
50
25
25
50
25
25
25
10
10
Note:
1.
Please select the larger cross-section conductor for the UPS input cable in the single source
application.
2.
UPS output cable length is recommended not to exceed 10m.
3.
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.
3.4.2
Wiring for AC cable (AC source to UPS)
High leakage current:
Earth connection essential before connecting supply.
This type of connection must be carried out by qualified electrical personnel.
Before carrying out any connection, check that the upstream protection devices
{Normal AC source and Bypass AC source) are open 'O' {Off).
Always connect the ground wire first.
