EN
11
Electrical connection
The connections to the solar modules must be realised with circuit breakers or disconnect-
ors. The connections to the batteries must be realised with a fuse or a circuit breaker. It is
not allowed to connect inverters to the load output.
Recommended core cross-sections, tightening torques, and battery circuit breakers:
Device
version
System
voltage
Core cross-section
Tightening
torque
Battery
circuit breaker
30 A
12 V
Battery: 16 mm²
Solar module: 16 mm²
Load: 16 mm²
1.2 Nm
40 A
24 V
Battery: 6 mm²
Solar module: 6 mm²
Load: 6 mm²
50 A
12 V
Battery: 16 mm²
Solar module: 25 mm²
Load: 16 mm²
2 Nm
60 A
24 V
Battery: 6 mm²
Solar module: 6 mm²
Load: 6 mm²
48 V
Battery: 6 mm²
Solar module: 6 mm²
Load: 2.5 mm²
The recommended core cross-sections apply to the following presumed distances to the
device:
•
2 m to the battery
•
10 m to the solar module
•
5 m to the load
In the case of considerably different distances, the core cross-sections must be adapted.
The following solar module voltages are assumed:
•
30 V for 12 V system voltage
•
60 V for 24 V system voltage
•
90 V for 48 V system voltage
