[RE-wrenches] Generator overvoltage troubleshoot

[Jerry Shafer]

Jim
Is the system set to global, i had seen issues with this setting, some of
what you said also fits.
Fun times

On Fri, Nov 8, 2024, 8:34 PM Jim Gowdy via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi all,
>      I need some help with a generator overvoltage troubleshoot.  I'm
> working on an outback offgrid system that consists of 2 x Radian GS8048a, 1
> x MATE3S controller, 1 x FM 80 charge controller, 1 x 55kw cummins
> generator, about 4kw of solar *not sufficient enough to keep up with the
> load, and 24 x 4v Rolls batteries series/paralleled to make 48v.  The
> generator was rebuilt and the batteries replaced about a year ago and since
> then, the generator has been faulting due to overvoltage.  I had help and
> first found that the MATE needed calibrating so that was done, but the
> generator still was faulting.  I found changing the AC Input Charging from
> 30a to 20a seemed to work.  I put a power monitor on the generator output
> and found that, with the AC Input Charging set at 30a, noticed that there
> was a voltage spike up to 300+V at about a 70a draw.  The generator company
> put a load bank on and verified the generator may not be at fault and the
> problem is after the generator.  Has anyone encountered a problem like this
> and have suggestions?
>
> --
> Jim with Gowdy Electric
> Cambria, Ca 93428
> business  805 927 2630
> cell  805 975 5279
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