This happens when too much PV power is connected to the PowMr.
There are 12x335W Panels connected. Full sun. 3 in series. 4 in parallel: 3S4P.
The charging amperage is moving up and down. From 50..68A.
The real amperage is a little lower (measured with current clamp). 50A max. or so.
This is a modified PowMr charge controller. Aluminium backplane is cutout and a CPU heatpipe cooler is screwed on with 120mm fan. Temperature is going up to 43degrees in a cool basement.
Surprisingly the PowMr does not die. Overload condition takes approx. 1h or so. I suggest more cooling by open the case even more and place more 120mm fans blowing the board.
Негізгі бет PowMr MPPT charge controller PV overload
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