SMA America, LLC
6 Electrical Connection
Technical description
SI4548_6048-US-TB_en-13
51
Connecting the Battery Temperature Sensor
1. Pierce a hole at a suitable location in the cable support sleeve using a sharp object.
2. Starting from the outside, lead the insulated conductors with bootlace ferrules through the hole
in the Sunny Island.
3. Connect the insulated conductors correspondingly to the "BatTmp" terminal of the 4-pole
terminal included in the delivery.
4. Tighten the terminals (torque: 5 in-lbs. to 7 in-lbs. (0.56 Nm to 0.79 Nm)).
5. Insert the 4-pole terminal into the "BatTmp" pin connector on the Sunny Island.
6. Attach the battery temperature sensor to the outside of one of the battery cells. Choose a spot
between two cells and in the central area of the battery storage system. The heat generation
during operation is the greatest there.
Destruction of the battery through deep discharge as a result of the installation of an unsuitable
battery temperature sensor.
• Only use the battery temperature sensor included in the scope of delivery.
• Do not drill holes into the battery to install the battery temperature sensor.
Battery temperature sensor in a cluster
A battery temperature sensor is provided with each Sunny Island. Only one battery
temperature sensor is required for a cluster. Connect the temperature sensor to the master of
the cluster.
Polarity of the conductors
The polarity of the two conductors is irrelevant for the functioning of the battery temperature
sensor.
Summary of Contents for Sunny Island 4548-US
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