5 | Electrical installation
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Installation instructions sonnenBackup-Box
A
B
11
L1
L2
L3
N
PE
10
12
1
2
5
kWh 3~
L1 L2 L3 N PE
N L1 L2 L3
A1 A2
16
15
13
14
3
1
2
L1 L2 L3 N PE
L1 L2 L3 N PE
17
1
1 2 3
2
6
1
4
9
8
7
L1
L2
L3
N
PE
L1
L2
L3
N
PE
6
3
2
3
3
4
1 2 3
5
Section A - Existing installation of the storage system
1
PV inverter
7
Current transformer consumption L1
13
Bidirectional counter
2 Current transformer generation L1
8
Current transformer consumption L2
14
Public electrical mains
3 Current transformer generation L2
9
Current transformer consumption L3
15
Power meter MCB
4 Current transformer generation L3
10 RCD
1
5 Transformer interface generation (A1)
11
Storage system MCB
2
16
Power meter
6 Transformer interface consumption (A2) 12 Storage system
17
PV inverter MCB
Section B - Altered installation by Backup-Box
1
Consumers in building
3
Earth connection
5
RCD (in TT networks)
2 RCD
4
Backup-Box
6
Miniature circuit breaker | Type C | 32 A
1
According to the requirement in the installation instructions of the storage system.
2
Miniature Circuit Breaker.
