[RE-wrenches] Oddball pumping question

[Jerry Shafer]

can you give us more details, are you proposing pumping from a pond, a
well, storage tank what.
Jerry


On Thu, Mar 27, 2014 at 7:19 AM, Chris Mason
<cometenergysystems at gmail.com>wrote:

> I have a couple of suggestions. A pump motor of that size is likely Class
> H and requires a 7x starting current or Locked Rotor Amperage. During
> starting the power factor can drop to .2 or lower and the inrush can run to
> 20 times the rated run current. Even diesel generators have a very
> difficult time starting singular loads of this size. I would not even
> attempt such a task.
> That said, the solution is to look at the work to be done. If the intent
> is to pump, let's say, 10000 gallons in one hour per day, suggest that a
> solar powered DC pump could accomplish the same in the course of a day. DC
> pumps are viable speed and don't have inrush currents.
>
>
> On Thu, Mar 27, 2014 at 10:07 AM, Allan Sindelar <
> allan at positiveenergysolar.com> wrote:
>
>>  Wrenches,
>> Here's one of the oddest questions I have come across in years:
>>
>> PRC Commisioner Lyons issued a challenge to NM solar companies today. He
>> stated that he cannot get his electric coop to bring three phase into his
>> property to run his irrigation (a 150 hp motor). He said that whenever he
>> mentions this to a solar outfit - running a 150 hp motor on pv - they look
>> back at him like a deer in the headlights. Can you meet his challenge?
>>
>> This application is way above my pay grade, and normally I would not give
>> this question much pause, as few ranchers would be seriously willing to put
>> up the money for the design and research time to work up and price a
>> solution, especially given that as far as I know, none even exists. No
>> rural water pumping PV designer that I know works with motor loads of such
>> scale. Indeed, it makes my head spin to think of it.
>>
>> I checked an older (2003) Franklin motor application guide and found
>> specs for a 150 HP 3 phase motor: 128 kilowatts at 380-575 VAC at 60 Hz.
>>
>> The only reason I am writing is this: The rancher is one of our state's
>> five Public Regulatory Commissioners. These are the folks who regulate our
>> three private utilities and 20 +/- rural co-ops, and he is perhaps the most
>> conservative one of the five. Last fall he initiated an ill-conceived
>> regulation to cut in half our state's RPS and pushed it through to passage
>> on the PRC; about two months later the ruling was rescinded due to a huge
>> public outcry. So if it were even possible to address his particular
>> request, the potential consequences could have far-reaching effects
>> politically.
>>
>> Has anyone attempted or accomplished anything even close to this? Is
>> there existing equipment that could handle such an application? Could such
>> an application be justified economically? Or can anyone offer a reasoned
>> answer why it's not possible?
>>
>> Thank you,
>> Allan
>> --
>>
>> *Allan Sindelar*
>> *Allan at positiveenergysolar.com* <Allan at positiveenergysolar.com>
>> NABCEP Certified PV Installation Professional
>> NABCEP Certified Technical Sales Professional
>> New Mexico EE98J Journeyman Electrician
>> Founder, *Positive Energy, Inc.*
>>
>> A Certified B CorporationTM
>> 3209 Richards Lane
>> Santa Fe, New Mexico 87507
>> *505 424-1112 <505%20424-1112> office 780-2738 cell*
>> *www.positiveenergysolar.com* <http://www.positiveenergysolar.com/>
>>
>>
>>
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>
>
> --
> Chris Mason
> President, Comet Systems Ltd
> www.cometenergysystems.com
> Cell: 264.235.5670
> Skype: netconcepts
>
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