Boy, I'm haunted with the notion that we've seen this before.. years ago. I want to say it was a simple fix. might have been something to do with NiCad batteries. Maybe low battery voltage and high start currents. I just don't remember.. maybe I wasn't here then.
db
Dan Brown
Foxfire Energy Corp.
Renewable Energy Systems
(802)-483-2564
www.Foxfire-Energy.com
NABCEP #092907-44
-------- Original Message --------
Subject: Re: [RE-wrenches] Overcurrent error SW4024
From: Dan Fink <danbo...@gmail.com>
Date: Thu, March 29, 2012 3:04 pm
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Turning on other loads around the shop seems to work here. But we need
to have over 100 watts on (we are using lights) to prevent the
problem. It's a PITA, as it crashes the satellite internet, which
takes 20-60 minutes to boot back up.
DAN FINK
On Thu, Mar 29, 2012 at 12:12 PM, <penobscotso...@midmaine.com> wrote:
> We've seen this type of problem twice with well pumps. Both times, the
> problem was with a short in the load side close to the pump. One was
> occasional, the other constant. Interestingly, running a large generator
> seemed to "fix" the situation to the customer. In both cases, we found the
> short, repaired it and both systems are still working well to this day.
> One used a transformer, the other was a single 4024SW.
>
> Daryl
>
>
>
>> Hi Mac;
>>
>> We are having a similar problem at our metal shop with two stacked
>> SW4024s. They are stacked so that inverter #2 idles until something
>> 240V is turned on -- well pump and welder are the only 240 VAC loads.
>> We are getting an overcurrent error and shutdown by just turning the
>> welder's power switch on -- NOT when starting to weld.
>>
>> Any help from the list appreciated!
>>
>> --
>> Dan Fink,
>> Executive Director;
>> Otherpower
>> Buckville Energy Consulting
>> Buckville Publications LLC
>> NABCEP / IREC accredited Continuing Education Providers
>> 970.672.4342 (voicemail)
>>
>> On Thu, Mar 29, 2012 at 8:25 AM, mac Lewis <maclew...@gmail.com> wrote:
>>> Hello wrenches,
>>>
>>> I have a customer that I have been working with over the phone. He has
>>> a SW
>>> 4024, with a T240 transformer feeding a 2 HP well pump on a timer. The
>>> system has worked well for years, but recently, he has been getting
>>> overcurrent errors when the well pump starts. It's not every time, but
>>> about every other time. He also did an experiment where he turned off
>>> the
>>> well pump, and gets the overcurrent error just energizing the
>>> transformer.
>>> Does this indicate the transformer is failing? What are other
>>> explanations
>>> for this behavior?
>>>
>>> Thanks for any advice
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