Which Cummins?
On Sat, Nov 9, 2024 at 4:59 AM Mac Lewis via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Hi Jim, > > I think the voltage regulator on the generator is the issue, but you may > be able to fix it by trying a different AC input mode. What is the AC > input mode are you using on the Radians? Are the modes the same on each > Radian? Since you have a range of input that you can get it to hiccup, I'd > try playing with the AC input modes through the problematic range. I tend > to use support mode with the least trouble. > > What are the downstream loads? > > I could see perhaps how a downstream load that is large and inductive and > shuts down rapidly could cause a voltage spike, but really the voltage > regulator is in charge of that. > > ANother thing to check is torque/corrosion on your connections. I like to > use an IR camera to speed up looking for connection issues. > > Let us know what you find out. > > On Fri, Nov 8, 2024 at 9:34 PM Jim Gowdy via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> Hi all, >> I need some help with a generator overvoltage troubleshoot. I'm >> working on an outback offgrid system that consists of 2 x Radian GS8048a, 1 >> x MATE3S controller, 1 x FM 80 charge controller, 1 x 55kw cummins >> generator, about 4kw of solar *not sufficient enough to keep up with the >> load, and 24 x 4v Rolls batteries series/paralleled to make 48v. The >> generator was rebuilt and the batteries replaced about a year ago and since >> then, the generator has been faulting due to overvoltage. I had help and >> first found that the MATE needed calibrating so that was done, but the >> generator still was faulting. I found changing the AC Input Charging from >> 30a to 20a seemed to work. I put a power monitor on the generator output >> and found that, with the AC Input Charging set at 30a, noticed that there >> was a voltage spike up to 300+V at about a 70a draw. The generator company >> put a load bank on and verified the generator may not be at fault and the >> problem is after the generator. Has anyone encountered a problem like this >> and have suggestions? >> >> -- >> Jim with Gowdy Electric >> Cambria, Ca 93428 >> business 805 927 2630 >> cell 805 975 5279 >> _______________________________________________ >> 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 >> >> > > -- > > > > Mac Lewis > > *"Yo solo sé que no sé nada." -Sócrates* > _______________________________________________ > 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 > > -- Michael Morningstar Morningstar Electric Inc PO Box 1494 Mount Shasta, CA 96067 530-921-0560 CSLB 1116835 mjmornings...@gmail.com
_______________________________________________ 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
