Pierre10

Thanks, frivan. I’ve done it before with 3 × Quattros and a Solis grid-tied inverter. In this case, they are not MultiPlus-II units. The roof with the PV panels connected to the Victron charge controllers is full; therefore, we want to use another roof for the Solis. That way, one only has to run a communications cable to the Victrons, about 40 m away. This also increases the available daytime power by 15 kW, and taking load off the Victrons.

Does anybody know if one can use a Solis 15kw 3P LV Hybrid Inverter, wired as grid-tie, i.e. with no battery and grid input, AC-coupled to 3 x Victron 5 kVA Multis, to do the frequency derating by the Multis? The system is totally offgrid, just with a generator input once in a while when they need it.