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Hi,
I’d appreciate anyone’s assistance here, when the grid fails my multiplus registers a low battery alarm and high dc ripple, sometimes, and so the change over is not seem less, it takes about a minute, then it will switch on the power normally while the grid is lost.
I have a multiplus II and a dyness battery connected.
I have also had all the cables changed and the battery tested and rechecked, I just can’t get anyone who knows why the issue occurs
Can you please be specific about what models?
Ripple can be a few things, from loose/bad connections, too small gauge of wiring through to too big an inverter on too small a battery (current discharge limits), all which can be made worse by grid brownouts or poor grid.
Low battery at the same time reinforces the above which would result in a voltage drop on cutover, which also brings the BMS into the equation.
