SMA SUNNY ISLAND 8.0H - Installation work on the battery

SMA Solar Technology AG 6 Electrical Connection
Installation Manual SI80H-60H-OffGrid-IA-en-11 53
6.17 Connecting the Battery Current Sensor
If you are using a battery current sensor, connect it as follows:
Figure17: Connection of the battery current sensor to the off-grid inverter
Requirements:
☐ Measuring cables for intrinsically safe electric circuits must be used. In this context, "intrinsically
safe" means that the cable is double-insulated and that, in the event of a short circuit, the
conductor melts but the insulation remains intact. In addition, the cable is not combustible.
☐ The wires in the measuring cable must be twisted together.
1. Install the battery current sensor on the DC– power cable between the battery and BatFuse.
2. Break through the cable feed-through plate at a suitable position using a sharp object.
3. Strip the insulation from the measuring cable and press the bootlace ferrules onto the two wires.
4. Lead the measuring cable through the hole in the cable feed-through plate into the off-grid
inverter.
5. Connect the wires to the BatCur+ and BatCur − terminals using the 4-pole terminal
(torque: 0.5 Nm ... 0.6 Nm).
6. Connect the BatCur+ measuring wire to the BatFuse
L‒ side on the battery current sensor.