Try tweaking upward on the voltage at which the system disconnects from gen. I can't remember exactly in the Mate where that is found..."AC Input" may be the heading.
I believe the preset for that is 108 volts per leg or other fairly low number. If the inverter stack waits for the generator AC to collapse to such a low level before doing the transfer, that may be why the loads you mention are acting strangely. Jolliness, Mick Abraham, Proprietor www.abrahamsolar.com Voice: 970-731-4675 On Mon, Jun 14, 2010 at 11:31 PM, William Miller <[email protected]>wrote: > Wrenches: > > I have a customer that has a problem with a new generator. He has two > VFX3648 inverters in Outback stacking. He acquired a new generator, a > Kohler 12RES, a reputable make and model. Below is a description of the > problem: > > *The 12RES seems to be operating OK except for one problem. At the end of > a charging cycle, when the gen automatically shuts down and load goes back > to the inverters, all lights, TVs, etc., flash, one TV shuts off, and a GFI > trips. This has happened every time. It did not happen with the 15RES or > the smaller back-up gen (which was disconnected manually). With the 15RES > the same GFI would occasionally trip while the unit was charging and > handling house load, but never at the auto shutdown point. I replaced the > GFI, but it still trips. There are three GFIs in the house, but only > one--always the same--trips. > > > *I suggested he adjust the AC2/Gen transfer delay to a lower number. He > reduced it to minimum and this did not resolve the problem. I also had him > verify that the AC source is selected as generator, which it is. > > Do you have any suggestions? > > Thanks in advance, > > William Miller > > > *Please note new e-mail address and domain: > > *William Miller > Miller Solar > Voice :805-438-5600 > email: [email protected] > http://millersolar.com > License No. C-10-773985 > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > >
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