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

[John Blittersdorf]

Christopher,
Update on the Transformer Humming.  Installed a new PSX-240 from Kirk and
it is LOUDER than the T-240 that I took out.
I have a call into the well driller to see if they have a record of the
pump size or other details. When connected
directly to the grid via transfer switch, still loud noise... same with
battery only.  I did not check the 120VAC 30 amp break
in the backed up loads sub panel. All other wiring was redone as I switched
the pump directly to the grid until I received the
new transformer and back to the inverter again. so all the connections were
redone except the 120 breaker.

John


On Wed, Jan 22, 2025 at 10:30 AM Howie Michaelson via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> John,
> If you need a T240 (internal or external), I have a few used ones (and
> maybe a new one) in storage.
> Howie
>
>
> On Wed, Jan 22, 2025, 10:14 AM Christopher Warfel via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> I could be a loose electrical or mechanical connection. It's been
>> installed for a while and connections could have loosened up from
>> expansion and contraction.
>>
>> On 1/18/2025 9:06 AM, John Blittersdorf via RE-wrenches 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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>> --
>> Christopher Warfel, PE
>> ENTECH Engineering, Inc.
>> PO Box 871, Block Island, RI 02807
>> (401) 447-5773
>>
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