Mac — Jay has a good suggestion of the Grundfos RSI. There are other companies
making “solar pump inverters” to run standard 3-ph. pumps. And, that IS the way
to go for systems of this size.
Another supplier in USA is SunPumps. Another is GenPro (Lorentz distributor).
How to compare them? The inverter will represent a small proportion of the
system cost, so I would have to ask each prospective supplier to produce a
system design for you. Compare them carefully in regard to how they are
expected to handle less-than full sun conditions. Also “bells and whistles” can
be extremely helpful, meaning data-logging and remote connectivity and control
features. Another rare feature is the ability to handle both solar and backup
power sources, not merely by transfer switch or relay but by blending them with
solar priority.
Lorentz has been the leader in these features, but others have been catching
up. I hope you (and others) will report back about your findings! I’m still
researching this field form my upcoming book.
Windy Dankoff
Author, Consultant
http://www.windydankoff.com <http://www.windydankoff.com/>
Specialist in solar-electric applications & solar water pumping
Education <> Industry support <> Since 1975
Co-author Solar Water Pumping (Taylor & Francis, Earthscan London) for
publication in 2019
> From: Jay <[email protected] <mailto:[email protected]>>
> Subject: Re: [RE-wrenches] High Volume Solar Pumping
> Date: September 20, 2018 at 11:24:39 AM MDT
> To: RE-wrenches <[email protected]
> <mailto:[email protected]>>
>
>
> Mac
> Look at the grundfos RSI
>
> It’ll go up to 37kw for standard 3 phase pumps.
>
> At 37kw it’s 480 3 phase output and 1000vdc input if I remember correctly
>
> Jay
>> On Sep 20, 2018, at 3:01 PM, [email protected]
>> <mailto:[email protected]> wrote:
>>
>> From: Mac Lewis <[email protected] <mailto:[email protected]>>
>> Subject: [RE-wrenches] High Volume Solar Pumping
>> Date: September 20, 2018 at 11:04:21 AM MDT
>> To: RE-wrenches <[email protected]
>> <mailto:[email protected]>>
>>
>>
>> Hello Wrenches,
>>
>> This is a larger volume pumping application than I have designed before so
>> I'm trying to head in the right direction.
>>
>> We need ~ 144,000 gallons per day
>> Head is ~70'
>>
>> We'd like to do this via a surface pump(s) if possible.
>>
>> Do you know any equipment that may be able to do this volume per day?
>>
>> Thanks in advance
>>
>> --
>>
>> Mac Lewis
>
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