SMA SI 3324 Installation - Manual (Page 47)

SMA Technologie AG Electrical Connection
Installation Guide SI3324/4248-14:SE2406 Page 47
1. Install an M12 metric-thread cable screw connection (included in delivery) in the
"Battery temperature sensor" cable feed-through (see figure Page 31).
- Remove the dummy plug covering the cable feed-through in the housing.
- Insert the metric-thread cable screw connection into the opening in the
housing.
- Screw the counter-nut onto the cable screw connection thread inside the
housing.
2. Feed the cable with the cable end sleeves through the metric-thread cable screw
connection into the housing of the Sunny Island 3324/4248.
3. Insert the conductor with the cable end sleeve into the "TBat1" connection
terminal and tighten the terminal screw firmly. The connection terminal
numbering is irrelevant, the polarity does not matter.
4. Then connect the second conductor to the "TBat2" connection terminal.
5. Now tighten the metric-thread cable screw connection firmly.
Installation of the Battery Temperature Sensor at the Battery.
Fasten the battery temperature sensor to the outside of one of the battery cells.
Choose a cell in the middle of the battery bank, the batteries generate the most heat
in this region during operation.