6 Electrical Connection SMA Solar Technology AG
52 SI80H-60H-OffGrid-IA-en-11 Installation Manual
4. Hold the cables in position and push the cable
feed-through plate towards the enclosure opening
of the cable feed-through plate.
5. Hook the cable feed-through plate into the enclosure opening of the cable feed-through plate
and push it into the enclosure opening.
6.16 Connecting the Battery Temperature Sensor
1. Break through the cable feed-through plate at a suitable position using a sharp object.
2. Lead both wires of the battery temperature sensor through the hole in the cable feed-through
plate into the off-grid inverter.
3. Connect the wires to the BatTmp terminal using the 4-pole terminal
(torque: 0.5 Nm ... 0.6 Nm). The polarity does not matter here.
Battery temperature sensor in a cluster
Only the master measures the battery temperature in a cluster.
• Connect the battery temperature sensor only to the master.
Damage to the battery due to excessive charging voltage
Due to incorrect temperature measurements, the off-grid inverter charges the battery with an
incorrect charging voltage.
• Connect only the battery temperature sensor supplied.
• Attach the battery temperature sensor at the centre of the battery bank, in the upper third of
the battery cell. The battery temperature sensor will then measure the warmest point in the
battery bank.
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