SMA Sunny Island 2012 Technical Description page 62

Sunny Island Electrical Connection
Installation notice
The battery current sensor must be looped around the negative pole of the battery. In
addition, the contact of that battery current sensor which is connected to the Sunny Island
(1) must be connected to the terminal "BatCur+" (see following diagram).
If the battery current sensor is connected as described above,
• positive battery current means that the battery is discharging (current from the
battery)
• negative battery current means that the battery is charging (current into the battery)
Information
Charge controller and PV in the illustration above are only examples.
62 SI2012_2224-TEN082311
SMA Solar Technology AG
Technical Description