The Sofar ME3000sp is a kind of inverter charger, it is connected to the grid and 2 ct transformers measure the current at the meter point,if we have excess power it pushes that into the lithium batteries,if we are drawing from the grid, the inverter pulls power from the batteries so that it reduces power drawer from the grid. In the event of a power cut it switches into eps state and will power sockets etc not connected to the grid.It runs 7kw pylon lithium batteries. I also have a sofar and a solis inverters which are connected to 3kw array of panels.
My problem is this; when the grid power goes down,the 2 inverters shut down (obvious reasons),the grid side of the sofar me3000sp shuts down as well going into eps state. I am wondering if it is poss to disconnect the grid line to the sofar me3000 and connect it to stable power supply ie generator which would power up the sofar and recharge the batteries (being that the inverters have shut down).
Another way I think I could do it which would cost is to do away with the 2 inverters and the sofar and get a hybrid inverter charger which I THINK would solve the problem,but at great expense, prob a Sofar HYD range of inverters, a lot of others seem are either too expensive or will not accept pylon lithium batteries. Or another way could be to develop my own "grid" without destroying the inverters I have (rising voltage), any views on that one?. Just to note excess power at the moment is diverted into water heating (after batteries have been charged),when that is all satisfied it is lost to the grid. The sofar me3000sp is NOT linked to the solar panels in any way, only via the grid.