Steve, I took my scope meter today and checked wave forms at all points. All were clean sine waves. I checked the breaker connections and all connections back to the inverter and all were tight. Voltage drop when pump kicked on was small and only about 1 volt when running. Amp were 12 on both legs.
On Thu, Jan 23, 2025 at 9:48 AM Jay via RE-wrenches < [email protected]> wrote: > Are the amps leg the same? > Jay > > On Jan 22, 2025, at 9:29 PM, Steve Higgins via RE-wrenches < > [email protected]> wrote: > > > How do their clocks run? Is the Xfmer quiet down when the generator > runs? > > If you have an O-scope, check the output waveform off the inverter. My > guess is that the output waveform will be deformed, causing extra noise for > the Xfmer. You might be able to see this on the frequency as well. It > should be solid at 60Hz, but if it's drifting or way off the high side, > FETS have probably failed. > > If you pull the top cover off the inverter the and you look at the FET > board, it'll be the fets closest to the Fan on the AC board. > > > <image.png> > > Steve Higgins > > > > > On Wed, Jan 22, 2025 at 7:32 PM John Blittersdorf via RE-wrenches < > [email protected]> wrote: > >> 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 < >> [email protected]> 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 < >>> [email protected]> 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 >>>> > >>>> > _______________________________________________ >>>> > List sponsored by Redwood Alliance >>>> > >>>> > Pay optional member dues here: http://re-wrenches.org >>>> > >>>> > List Address: [email protected] >>>> > >>>> > Change listserver email address & settings: >>>> > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>> > >>>> > There are two list archives for searching. When one doesn't work, try >>>> the other: >>>> > https://www.mail-archive.com/[email protected]/ >>>> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>>> > >>>> > List rules & etiquette: >>>> > http://www.re-wrenches.org/etiquette.htm >>>> > >>>> > Check out or update participant bios: >>>> > http://www.members.re-wrenches.org >>>> > >>>> -- >>>> Christopher Warfel, PE >>>> ENTECH Engineering, Inc. >>>> PO Box 871, Block Island, RI 02807 >>>> (401) 447-5773 >>>> >>>> _______________________________________________ >>>> List sponsored by Redwood Alliance >>>> >>>> Pay optional member dues here: http://re-wrenches.org >>>> >>>> List Address: [email protected] >>>> >>>> Change listserver email address & settings: >>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>> >>>> There are two list archives for searching. When one doesn't work, try >>>> the other: >>>> https://www.mail-archive.com/[email protected]/ >>>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>>> >>>> List rules & etiquette: >>>> http://www.re-wrenches.org/etiquette.htm >>>> >>>> Check out or update participant bios: >>>> http://www.members.re-wrenches.org >>>> >>>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> >>> List Address: [email protected] >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> There are two list archives for searching. When one doesn't work, try >>> the other: >>> https://www.mail-archive.com/[email protected]/ >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> http://www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> http://www.members.re-wrenches.org >>> >>> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. 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