Fw: Submersible Pump Advice [RE-wrenches]

[Allan Sindelar]

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Wrenches,
I forwarded my original post to Bob Schmitt, who handles pump tech support
at Conergy. I was surprised by his affirmative answer, below:
Allan @+E

----- Original Message ----- 
From: "Bob Schmitt" <b.schmitt at conergy.us>
>
> The PS600 will run on 24volt battery. It autosenses batt voltage on power
up
> and set appropriate LVD automagically.I have many in the field configured
> this way.
>
> Merry Christmas! Bob
>
> Bob,
> I have posted the following to the Wrenches list, and have received some
> responses. I'm interested in any advice you may have as well.
> Allan
>
>
> Customer lives offgrid with a 1998 24V system: 900W array, SB6024, DR2424.
A
> SunRise pump is set at 300' by hand method, run from batteries with a
24-60V
> battery pump controller. Both pump and controller replaced with rebuilt
> units within last 6 months.
>
> Aside: Gary Hegg of Total Light and Power in Pie Town NM, 505 772-5759,
> http://www.solarstraw.com/dankoff.html is servicing SunRise pumps for
anyone
> still using them.
>
> Customer is insecure about sticking with the SunRise and has asked for a
> quote for a new system. I'm looking for comparative advice. He wants
> automatic operation off of a float switch, so no AC pumps running off his
> gennie. At this depth, my choices are:
>
> SQFlex, but only running on AC power, as the pump needs at least 30 VDC,
and
> the system voltage is 24V. Does the SQF do fine on mod-square power?
>
> Lorentz/ETA, but the 24V mini won't work at 300', and the bigger units
don't
> work at 24V, so we would have to work out a relay-based diversion of part
of
> the array (which is wired 48Vnom) to run an array-direct controller. We
can
> do this, but the trenching for the additional wires wouldn't be pretty.
>
> Any other ideas? Note that the customer's budget prevents big-picture
> solutions like a 48V system upgrade, or even a new inverter.
>
> Thank you for the help.
> Allan at Positive E
>
>
>

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