4NWP100559R0001_OPM_ABB_PVA31-11-T_10-20kVA_EN_140626
Page 13/37 ABB
Modifications reserved
4.2.2 Connections
Before installing the electrical wiring, check the nominal amperage of your incoming feeder.
WARNING!
THE CABLING CONNECTIONS MUST BE CARRIED OUT BY QUALIFIED
ELECTRICAL PERSONNEL.
DO NOT USE THE WALL SOCKET AS THE INPUT POWER SOURCE FOR
THE UPS. ITS RATED CURRENT IS NOT ADEQUATE TO THE FEED THE
UPS AND MAY BURN THE SOCKET.
The UPS is cabled through the terminal blocks as indicated in Figure 6.
Figure 6: Terminal blocks
4.2.2.1 Wiring Recommendation
It is recommended to use the following cables for the installation.
Position
10kVA
20 kVA
Mains 1
Input L1, L2, L3
Min section: 2.5 mm
2
Max section: 4 mm
2
Min section: 6 mm
2
Max section: 10 mm
2
Input
breaker,
internal
40A
60A
Mains 2
Input M2, N (bypass)
Min section: 10 mm
2
Max section: 13 mm
2
Min section: 21 mm
2
Max section: 25 mm
2
Input breaker M2
(bypass)
63A
100A
Battery
Circuit breaker
40A 400V
80A 400V
Output
Output L, N
Min section: 10 mm
2
Max section: 13 mm
2
Min section: 21 mm
2
Max section: 25 mm
2
External
Battery cabinet
Positive, Negative and
neutral poles
Min section: 10 mm
2
Max section: 13 mm
2
Min section: 21 mm
2
Max section: 25 mm
2
Back feed
Bypass protection (M2)
AC contactor of minimally 100A rating, e.g. a three phase
contactor of 3* 40A with the poles wired together (e.g. ABB
AF-26)
Control coil rated according to bypass supply.
Protecting
Earth
Input, bypass and
output
Max section: 13 mm2
Max section: 25 mm2
Table 1: Wiring dimensioning
Green or green and yellow wires should be used to distinguish the earth cable.