Connecting the Battery Current Sensor in the Off-Grid System
Qualified person
When using lead-acid batteries, a battery current sensor can be installed for precise measurement of the battery current.
Connection of the battery current sensor to the Sunny Island.
Cable requirements:
- Copper wire
- Maximum cable length: 3 m
- Conductor cross-section: 0.2 mm² to 2.5 mm²
- A measuring cable with intrinsically safe current circuits must be used. For this purpose, “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.
- Insulated conductors in the measuring cable must be twisted.
Procedure:
- Install the battery current sensor in the DC power cable between the battery and the battery fuse.
- Connect the BatCur+ insulated measuring conductor to the side for connecting the battery fuse on the battery current sensor.
- Connect the BatCur- insulated measuring conductor to the side for connecting the battery on the battery current sensor.
- Thread both insulated conductors through a ferrite included in the scope of delivery and connect to the terminals BatCur+ und BatCur- on the Sunny Island ( > Connecting BatVtgOut, DigIn, BatTMP and BatCur).
