Export on 3 x 5kw inverters setup as 3 phase.
I have a client wanting to install 3 x 5kw inverters in a 3 phase configuration. He would like to export excess solar power when available however at times he wants to only export on 2 of the 3 phases as he has 3 x bi-directional meters on his grid supply. Is it possible to turn on the export function on 2 of the 3 inverters and leave one off... will the export function work this way or does it need to be balanced?
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Regardless if the system is capable of exporting an unbalanced load, (I don’t know myself) will your local DNO accept an unbalanced load being exported.