Why not use a offgrid PV inverter?, there are a lot of those available and they can handle up to 800 V or in some cases even more. 73 Andre PE1RDW Op 03-09-2021 om 00:58 schreef Robert Bruninga: > The problem is finding a source of HV input UPS inverters. > They are rare as hens teeth and/or very expensive, I think. > ? > > Bob >