Don't know about the variable speed but are the wires feeding the pump large enough for the distance? Sounds like it might be voltage starved because of a high resistance / bad connection or a long wire run and the need for a larger wire ?
Just a thought, Bob Ellison > On Dec 10, 2016, at 11:39 AM, Dan Fink <[email protected]> wrote: > > Esteemed Wrenches; > > I have a client in a very remote mountain location who is having trouble with > his inverter starting his well pump when battery state of charge is below > 75%. 24v system, Magnum inverter. > > It's a 2-wire pump, unknown age, model, horsepower, or well depth. It has > always given him trouble, that's why he upgraded to 24v, and the situation is > better, but not ideal yet. I don't think adding a hard start capacitor would > help as there should be one inside the pump itself, though I suppose it could > be blown. > > Because of the distance and the rough road, it would be super expensive for a > well company to come up there, pull the old pump and set a new, modern > soft-start one. > > Has anyone here had any experience with retrofitting variable speed drive > units to an unknown pump? If so, what models have you tried and what do you > prefer? > > Thanks; > > Dan Fink > Adjunct Professor of Solar Energy Technology, Ecotech Institute > IREC Certified Instructor™ for: > ~ PV Installation Professional > ~ Small Wind Installer > Executive Director, Buckville Energy > NABCEP Registered Continuing Education Providers™ > 970.672.4342 > > > _______________________________________________ > 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://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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