Hi, I'm hoping someone can help with this one. We have a Multiplus 48/3000/35 connected in ESS to our local grid with the ET340 (in Single phase) mode.
During the day when our grid tied PV system is generating and our grid voltages are generally lower, we don't notice any issues.
However at night when the Multiplus is supplying power to minimise our grid imports, we've noticed that as soon as a high draw load (i.e. a microwave) finishes, the lights flicker considerably until the Victron reduces it's level of output and the grid gets back to it's reference point, after which it's all good until a high demand appliance stops again. It doesn't seem to happen when the appliance first starts up as I'm assuming the grid is supplying the inertia at this point.
Does anyone have any idea what could be the cause of this and any suggestions to fix it?