[RE-wrenches] Retrofit variable speed drive to old well pump?

[Drake]

The usual wire I see running to most pumps is #10 
UF cable. A 450 foot run might create too much 
voltage drop. Maybe a buck boost transformer would help.

Drake

At 12:11 PM 12/10/2016, you wrote:
>Hi Bob; I checked the connections for corrosion, 
>and the wire size looks like "the usual" for up 
>here in this area, it's only about 100 feet and 
>the usual well depth around here is 350 ft. 
>Running stouter wire might be an option to 
>consider...but that's a lot of digging. I'm just 
>hoping VSD might be a quick and dirty solution.
>
>Dan Fink
>Adjunct Professor of Solar Energy Technology, Ecotech Institute
>IREC Certified Instructorâ„¢ for:Â
>~ PV Installation Professional
>~ Small Wind Installer
>Executive Director, Buckville Energy
>NABCEP Registered Continuing Education Providers™
><ttel:970.672.4342>970.672.4342
>
>Â
>
>On Sat, Dec 10, 2016 at 9:53 AM, RE Ellison 
><<mailto:reellison at gmail.com>reellison at gmail.com> wrote:
>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 
><<mailto:danbob88 at gmail.com>danbob88 at gmail.com> 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.Â
>>
>>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;Â
>>
>>Dan Fink
>>Adjunct Professor of Solar Energy Technology, Ecotech Institute
>>IREC Certified Instructor™ for:Â


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