asked
do multiplus have anti islanding built in to them??
This will be better answered by the Victron staff...but.
yes, all models have it, but local regulations differ, and there is a limited number of country's where the products are validated for.
Some country's are ok with the normal Multi's / Quattro's, other demand dual relays in input of inverter, so there the Multigrid / Multiplus II is needed.
Country's that are not yet 'supported' need an external anti-islanding device unfortunately.
Normal MultiPlus No. Just Multiplus 2 and Multigrid have AntiIsland integratet
It depends on the definition of anti-islanding, more exactly local regulations.
Every multiplus is capable to cut internal inverter on grid failure
