I have a Multiplus ii 3000 that runs in parallel with grid. So nothing connected to AC OUT - it’s used purely to charge batteries and invert battery output.
I have a problem where if over 10kw is being drawn from the grid (car charging etc) then the Multiplus won’t charge its own batteries. It did actually discharge the batteries to try to assist the grid over 10kw but I disabled it with node-red.
I understand why it does this for ‘on-line’ purposes but it seems totally unnecessary in an ESS setup.
The grid draw is measured by a CT clamp round the mains incomer.
Is there a way round this?