The only thing I could find in the whole system that was not up to snuff was incomplete separation of neutrals and grounds in the sub-panel. In other words more than one ground to neutral bond. But the fact remains that this system worked flawlessly for 26 years! I also removed the ground wire from the transformer but still no difference. What am I missing?
On Thu, Jan 23, 2025 at 10:35 PM John Blittersdorf < john.blittersd...@gmail.com> wrote: > 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 < > re-wrenches@lists.re-wrenches.org> wrote: > >> Are the amps leg the same? >> Jay >> >> On Jan 22, 2025, at 9:29 PM, Steve Higgins via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> 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 < >> re-wrenches@lists.re-wrenches.org> 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 < >>> re-wrenches@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@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 >>>>> > >>>>> > _______________________________________________ >>>>> > List sponsored by Redwood Alliance >>>>> > >>>>> > Pay optional member dues here: http://re-wrenches.org >>>>> > >>>>> > List Address: RE-wrenches@lists.re-wrenches.org >>>>> > >>>>> > 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/re-wrenches@lists.re-wrenches.org/ >>>>> > 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: RE-wrenches@lists.re-wrenches.org >>>>> >>>>> 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/re-wrenches@lists.re-wrenches.org/ >>>>> 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: RE-wrenches@lists.re-wrenches.org >>>> >>>> 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/re-wrenches@lists.re-wrenches.org/ >>>> 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: RE-wrenches@lists.re-wrenches.org >>> >>> 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/re-wrenches@lists.re-wrenches.org/ >>> 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: RE-wrenches@lists.re-wrenches.org >> >> 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/re-wrenches@lists.re-wrenches.org/ >> 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: RE-wrenches@lists.re-wrenches.org >> >> 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/re-wrenches@lists.re-wrenches.org/ >> 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: RE-wrenches@lists.re-wrenches.org 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/re-wrenches@lists.re-wrenches.org/ 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
