I just installed Easysolar-II GX 48/5000/70-50 MPPT 250/100 GX with 12 480w panels and a battery.
The grid voltage should be 230 but is varying between 253 and 263. This is outside the the net providers own limit (253). Hence my ESS won’t kick in. It seems to have a tolerance up to 254v. The grid owner have agreed to adjust the grid trafo, allthough this may take 6 months!
Does anyone know if I can adjust the inverter voltage tolerance level for AC in and out?
If not, should I install a step up/step down trafo - would this solve the problem?