2 HP pump [RE-wrenches]

[Mark Drummond]

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Todd,

We upgraded a system from one to two VFX3648s when the customer
commissioned his new well. We installed the system in a shed as the
first step in the construction of his home. Knowing the single inverter
couldn't handle the task of powering a 3HP SQE at 900 ft (as it turned
out to be), we installed the second inverter and an x-240 as a balancer.
We were still a bit nervous at that, but it worked fine and has been
installed for about a year with no issues. 

You should be fine with two inverters in your situation. Maybe one could
do the job. You could install an x-240 to get your 240 volts, if that
doesn't go, add an inverter and change the auto-former to a balancing
transformer.

Mark Drummond
NABCEP Certified PV Installer
Positive Energy, Inc.
www.positiveenergysolar.com
(505) 424-1112
 

-----Original Message-----
From: Todd Cory, Mt. Shasta Energy Services
[mailto:toddcory at finestplanet.com] 
Sent: Thursday, June 22, 2006 10:05 PM
To: RE-wrenches at topica.com
Subject: Re: 2 HP pump [RE-wrenches]

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It is a three wire pump... 240 volts (thats why the stacked 3648's), 
Gould pump, #8 wire down the hole. The well is 480', static level at 
440' (!) so is cannot be downsized to a 1 or even 1.5 HP, plus it is 
already installed.

I guess if dual 3648's won't start, it the new/used power panel I just 
found out about consisting of two SW2512's would never cut it either
right?

I suppose the Outback folks are drinking beer at MREF... lucky bastards!

Todd




Jay Peltz, Peltz Power wrote:

> Hi Todd,
>
> A number of variables.
> 2 or 3 wire start?
> 120 or 240?
> make of motor makes a big difference.
> length/size of wire run
>
> I have found a huge difference in efficiency of pumps.  For example  
> installing a SQ tomorrow.  The 1/2hp vs the 3/4hp was about 300% more

> efficient with the 3/4hp.
> But have found similar differences with standard motors.
>
> So even if it will run it, still might not be a good idea.
>
> Mostly I install SQ's, although generally not as efficient as  
> standard pumps, but the ease of starting means just fewer problems.
>
> my 2 cents,
>
> jay
>
> peltz power

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