[RE-wrenches] Puzzle: Dryer does not work during FXR battery charging

[Kent Osterberg]

Matt,

I haven't looked at what the FXR does to the waveform of a 3000-watt 
Honda, but I have used an oscilloscope to look at the waveform of a 
small generator while an FX inverter is charging batteries -- it pretty 
much makes an ugly mess of the voltage waveform. Not surprised to hear 
that some loads don't like to operate when the FXR is charging batteries 
from a small generator. The FX charger has a poor power factor and 
little filtering of the current waveform, it is a tough load on a small 
generator. The generator responds with lots of harmonic voltages and 
high frequency noise.

Kent Osterberg
Blue Mountain Solar


On 8/15/2020 8:06 AM, Matt Sherald wrote:
> Hello All,
>
> My curiosity was piqued by a recent customer complaint. I'm hoping 
> someone has bumped up against this issue before.
>
> The customer has a OB FXR2812 and a 3,000W Honda gen.
> Her gas clothes dryer runs just fine off the OB inverter.
> It runs properly on the Honda gen (when the inverter is bypassed)
> It will not run when the gen is on and battery charging is taking place.
>
> All the other AC loads (including the washing machine) run properly 
> during battery charging with the gen.
> The OB inverter replaced an old Trace unit.  The dryer worked as it 
> should with the Trace during battery charging.
>
> Any thoughts are greatly appreciated.  Thanks in advance!
>
> -- 
> Matt Sherald
> PIMBY Energy, LLC
> NABCEP Certified Solar PV Installer®
> 304-704-5943
>
> www.getpimby.blogspot.com <http://www.getpimby.blogspot.com>
> www.getpimby.com <http://www.getpimby.com>
>
>
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