I've seen that same issue too. I assumed that the battery charging, house base loads, and the microwave were too much power for the small generator. The voltage drops big time which I assume is what was causing the issue with the microwave and most likely with the dryer too.
On Sat, Aug 15, 2020 at 11:51 AM Dan Fink <[email protected]> wrote: > I have the same problem at my place, and a couple client's systems, with > Magnum inverter/chargers and small ~2-3kw generators (not just Honda). But > the problem appliance is microwave ovens, doesn't matter which microwave > brand. They run fine straight from the generator, and fine from the > inverter with no generator running, but make a strange, loud hum, dim > internal light, and food doesn't heat if the generator is also charging the > battery bank. I'll try to figure out how to capture a waveform photo with > my scopemeter and post it. > Dan Fink > Executive Director, Buckville Energy Consulting > NABCEP PV Associate > NABCEP Certified PV System Inspector > IREC Certified Instructor™ for: > ~ PV Installation Professional > ~ Small Wind Installer > NABCEP Registered Continuing Education Providers > d <[email protected]>[email protected] > 970-672-4342 > > > > > On Sat, Aug 15, 2020 at 9:37 AM Kent Osterberg <[email protected]> > wrote: > >> 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 >> www.getpimby.com >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & >> settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette:www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios:www.members.re-wrenches.org >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > -- *Will White* Curriculum Developer e: [email protected] w: www.solarenergy.org p: 802-272-3092 NABCEP Certified PV Installation Professional # 093006-34 Do you envision a world powered by renewable energy? Be the change <http://solarenergy.org/donate>.
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