I just installed my new EVCS (standalone) according to manual and updated to the latest firmware level (EVCS_Main_FW_OTA_V02.03_C025) and then plugged in my new car (Citroen eC3) for charging. I started carefully at 6A (with 3-phase power) since my cabling is not the final one. The strange thing is that the EVCS screen shows about 5,1 kW (which I expected), but TIBBER shows roughly 4,5 kW for the whole house (which I have to pay for). Looks like I am getting about 0,75 kW out of thin air … what could be the problem ?
My EVCS is completely standalone (the GX and all the other stuff is yet to come when I install the panels). In the settings I have kept the EV charger position at Inverter AC OUT (with no inverter there) and kept the GX device settings at the default with “Communication disabled”.
What is wrong here ? One of the measurements in the EVCS seems higher than in reality if I assume that my official power meter and the Tibber display are correct ?
… looks like that this is a power calibration issue … need to find some science behind just applying/changing some factors