Connecting The Data Cable Of The Battery - SMA SUNNY BOY STORAGE 2.5 Operating Manual

SMA Solar Technology AG
6.5

Connecting the Data Cable of the Battery

Danger to life due to electric shock
Overvoltages (e. g. in the case of a flash of lightning) can be further conducted into the building
and to other connected devices in the same network via network cables or other data cables if
there is no overvoltage protection.
• Ensure that all devices in the same network and the battery are integrated in the existing
overvoltage protection.
• When laying the network cables or other data cables outdoors, attention must be given to
suitable overvoltage protection at the cable transition from the inverter or the battery
outdoors to the inside of a building.
Failure-free operation of all system components due to tethered connection
• To ensure failure-free operation, SMA Solar Technology AG recommends connecting all
system components with each other via Speedwire.
Communication between Inverter and Battery
• Communication between the inverter and the battery takes place via the battery
communication cable via CAN bus.
Additionally required material (not included in the scope of delivery):
☐ One battery communication cable for the communication between inverter and battery
Cable requirements:
☐ Cable type: Twisted Pair
☐ Shielding: yes
☐ Conductor cross-section: 0.25 mm² to 0.34 mm²
☐ Number of conductor pairs: 4
☐ Maximum cable length: 10 m
☐ UV-resistant for outdoor use. SMA Solar Technology AG recommends the cable
"UC900 SS23 Cat.7 PE"
Operating Manual
6 Electrical Connection
SBS25-1VL-10-BE-en-10 37