Central current measurement and control for the Hardy Barth Wallbox. With this control unit, you can conveniently control the charge current of the Wallbox, regardless of the inverter or storage system installed. The measurement is performed independently at the network tie points. Thus, you can only charge the vehicle with PV energy.
If the eCB1 is installed directly at the grid connection point, only the excess energy can be determined. This is the basis for a dynamic vehicle load. But how much energy the car actually charges depends on the charge level of the battery and the charge controller installed there. In order to be able to visualise this information in the portal exactly, a second measuring point on the wallbox is required.
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