Often just adjusting the throttle screw is enough to get these low quality generators back into the spec that the inverter will accept. I expect you will find it well below 60 Hz and 240V (or 120V) when loaded heavily. Many people never do any maintenance so don't be surprised if the air-filter is clogged and the plugs need changed.
As suggested, I'd probably set the AC input to ~50% of rated capacity of the generator, maybe less. On Wed, Dec 16, 2020 at 8:03 AM Jerry Shafer <jerrysgarag...@gmail.com> wrote: > Wrenches > You may have answered you question here, "crappy genny" if the voltage or > the freq is to far out or just very dirty AC, the inverter will as you > discribed, keep attempting to connect but due to one of the issues can't > maintain a connection. > Jerry > NABCEP Inspector > > On Tue, Dec 15, 2020, 10:37 AM Dave Tedeyan <dtede...@taitem.com> wrote: > >> Hi All, >> >> I am going to service a system where the homeowner is telling me that >> their Conext SW4048 had been working fine for 14 months, and then all of a >> sudden recently stopped being able to charge the batteries from the >> generator. It is an off grid system. >> >> The inverter would start charging the batteries, but then about a minute >> later they would hear a relay click and the charging would stop. Then it >> would just keep cycling. If they turned everything off for a while, they >> could then turn it back on and charge for maybe 10 minutes before it would >> start cycling. They just have a crappy 4kw generator from Harbor Freight. >> >> I have not laid my own eyes on it yet, but will be there in the next day >> or two. Just wondering if anyone has experienced these symptoms and have a >> good idea of what to look for first. >> >> Thanks! >> -Dave >> >> *Dave Tedeyan, PE* >> Senior Engineer | Taitem Engineering, PC >> >> 110 South Albany Street | Ithaca, NY 14850 >> o. *607.277.1118 x121* f. 607.277.2119 >> www.taitem.com >> >> Solar • Sustainability • Energy • Design >> Certified B-Corporation since 2013 >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > -- Mac Lewis *"Yo solo sé que no sé nada." -Sócrates*
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