Sonnen sonnenBatterie 10, Installation Instructions Manual, Page: 53 / 100

Installing the extension cabinet (optional) | 7
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Connect the BMS communication lines as shown in the figure.
The first battery module (in the storage system) is connected to the BMS – First (X2)
socket on the central unit of the storage system. The last battery module (in the extension
cabinet) is connected to the
BMS – Last (X1) socket on the central unit of the storage sys-
tem.
7.2.3 Connecting the battery cables
DANGER
High battery voltage (> 200 V)
Danger to life due to electrocution!
When battery cables are connected, the battery coupling always carries the
voltage of the battery modules, even if the storage system and mains voltage
are switched off.
To disconnect the battery voltage from the battery coupling:
„
Unplug the battery cables from all battery modules.
• The battery modules in the extension cabinet are connected to the battery coupling us-
ing the battery cables.
• The battery coupling is connected to the central unit of the storage system using the
double battery cable.