What IS the AC output prior to connecting to the Inverters? Hzs? Is the generator an older unit w/ mechanical speed controls? 55kW gen set should have no problem that load and the OV will usually occur during the disconnection phase not once loaded. On a generator, the "Gain" setting controls the sensitivity of the voltage regulator, essentially determining how quickly the generator responds to changes in load by adjusting the excitation current to maintain a stable output voltage; a higher gain means a faster response to load fluctuations, while a lower gain results in a slower response, potentially leading to larger voltage swings under changing load conditions. TUMP
> On Jan 3, 2025, at 3:01 PM, Jerry Shafer via RE-wrenches > <[email protected]> wrote: > > I work with gen set and inverter integration all the time, unless you have an > inverter beginning to fail, it has to be the gen set, when l run load banks > it for 2, 4 hr. or even longer and the voltage may only be checked at > intervals and not continues. Use a fluke or other high quality meter set to > min max and test all the integration, now the inverter may be pushing back > spikes. You should also be able to tune in voltage at the gen set regulator, > it can set volts and freq. > Fun times > > > On Fri, Jan 3, 2025, 6:17 AM Jim Gowdy via RE-wrenches > <[email protected] > <mailto:[email protected]>> 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 single phase propane AC > 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? I've attached a PDF with a timeline of what I've done for > troubleshooting so far. > > -- > 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 > <http://re-wrenches.org/> > > List Address: [email protected] > <mailto:[email protected]> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <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]/ > <https://www.mail-archive.com/[email protected]/> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org> > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > http://www.members.re-wrenches.org <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 > "We must all learn to live together as brothers, or we all will perish as fools." MLK
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