[RE-wrenches] 120-240 Transformer loud vibration and humming.

Kirk Herander kirkh at vermont.solar
Sat Jan 18 06:10:44 PST 2025


John,

I have a new Outback 120/240 xformer if you need it. Contact me off list.

On Sat, Jan 18, 2025 at 9:06 AM John Blittersdorf via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi Wrenches,
>   I have a customer with an SW4024 installed in 2003 with the Trace T220
> transformer for
> her well pump.  Recently it has started making a lot of noise when the
> well pump comes on.
> I checked the current on the well pump and it seems to be in the normal
> range.  I have never had a transformer failure. Could this be a failing
> transformer?
>
> Also, I have not been able to source a new one (Outback T240).  Are there
> other brands
> some of you may have used for a step up transformer?
>
> John Blittersdorf
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-- 

*Kirk Herander / **kirkh at vermont.solar <kirkh at vermont.solar>*

*Owner|Principal, VT Solar, LLC*

*Celebrating our 34st Anniversary 1991-2025!!*

dba Vermont Solar Engineering

802.559.1225
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