Well pumps and SWs revisited [RE-wrenches]

Fri Oct 10 14:53:19 PDT 2003

Wrenches,

Although it is true that the SW5548 sometimes will not surge as large load
as a SW4048 or SW4024, the surge issue will be rectified with the release of
the SWPlus.  The new versions of both the new 4048 and 5548 will surge to
175 amps and the new 4024 will surge 125 amps.

Roy Dyngen
Xantrex Technology Inc.

-----Original Message-----
From: Joel Davidson [mailto:joeldavidson at earthlink.net] 
Sent: Saturday, October 04, 2003 8:27 AM
To: RE-wrenches at topica.com
Subject: Re: Well pumps and SWs revisited [RE-wrenches]

Ray,
Thanks for sharing your experience. Is anyone else seeing better performance
(surge, etc.) from SW4024s versus SW4048s?
Best regards,
Joel Davidson

Ray Walters wrote:

> My experience is that the DR 2424 out surges the 4024 which out surges the
> 4048 which out surges the 5548. I do sell the Sw4024 and 48, but only for
> systems that need the extra bells & whistles like auto gen start etc. For
> the money the DR series are still making people happy. I am interested in
> the SW plus, but have not tried one yet. FYI, if a load has problems with
> the mod sine wave of the DR, it usually isn't cured with the pyramid wave
> of the SW series either. The pure wave of the Exeltech or Outback FX is
> sometimes the only cure. A DR inverter and an Exeltech together are still
> cheaper than a SW4024 and offer better wave form, lower no load draw, and
> better surge. Its not the most elegant wiring solution though.
>
> Still waiting for a better inverter,
>
> Ray
>
>   At 08:12 PM 10/1/2003 -0700, you wrote:
> >Wow!  Ray, does your pile include the SW4048/24 as well with its
> >respective/relative surge capacity?
> >
> >PD
> >ASAP POWER!
> >
> >-----Original Message-----
> >From: Ray Walters [mailto:remotech at taosnm.com]
> >Sent: Wednesday, October 01, 2003 7:03 PM
> >To: RE-wrenches at topica.com
> >Subject: RE: Well pumps and SWs revisited [RE-wrenches]
> >
> >
> >NO one has mentioned in this thread that the SW5548 is terrible at
surges.
> >I've been disappointed that it trips its over current switch when a lowly
> >DR2424 can hang in there.( on air compressors for example) This has been
> >covered on the list before.
> >I've run a 2 hp pump with a T240 and DR3624 before in an emergency. It
> >started and stopped flawlessly even at 350 ft and 40 psi in the pressure
> >tank.
> >I  put the SW5548 in the same pile as the PS series ,XTR sun tie etc. I
> >won't sell em!
> >
> >Ray
> >
> >At 06:54 AM 10/1/2003 -0700, you wrote:
> > >I recently installed a SQ 1/2 hp two wire and it starts flawlessly on
> > >the VFX inverter I am currently running. Really does not have any surge
> > >to speak of starts at low current and ramps up.  Lovely thing.
> > >
> > >Ezra
> > >
> > >-----Original Message-----
> > >From: Jay Peltz, Peltz Power [mailto:jay at asis.com]
> > >Sent: Tuesday, September 30, 2003 9:07 AM
> > >To: RE-wrenches at topica.com
> > >Subject: Re: Well pumps and SWs revisited [RE-wrenches]
> > >
> > >
> > >Hi Ken,
> > >
> > >If you are looking for a pump answer then go with a Grundfos SQ pump.
> > >They come in 240 and have no surge, therefor they work great especailly
> > >with those 5548's.
> > >
> > >jay
> > >
> > >Peltz Power
> > >----- Original Message -----
> > >From: "Ken Hulet, Engineering Services Co." <esco at revolutionearth.com>
> > >To: "RE wrenches topica.com" <RE-wrenches at topica.com>
> > >Sent: Tuesday, September 30, 2003 5:27 AM
> > >Subject: Well pumps and SWs revisited [RE-wrenches]
> > >
> > >
> > > > I know this has been beaten to death but I got a call a year ago
about
> > >
> > > > a potential PV install. The owner was building and so we went
through
> > > > some of the basics. You know, 115V well pump if possible and if not,
> > > > smaller and efficient. I never hear from the guy until... months
later
> > >
> > > > we get to put in a SW 5548 system. I'm concerned about the pump
> > > > because the well pump installer laughed when our customer mentioned
a
> > > > 115V pump.
> > > >
> > > > We put in the T-240 and learned the pump is a 1.5HP, TWO wire and
> > > > SURPRISE the 5548 trips on high current when the well pump calls for
> > > > power. Using a Fluke clamp on I measured 29.7A inrush (100ms) on one
> > > > of the 230V lines when using the generator to power the pump.
> > > >
> > > > Any retrofit/improvement ideas or are we looking for a new pump?
> > > >
> > > >
> > > > Ken & Chris Hulet
> > > > Engineering Services Co.
> > > > P.O. Box 4
> > > > Blanchardville, WI 53516
> > > >
> > > > 608.523.3726
> > > >
> > > > http://www.revolutionearth.com
> >
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