Hi Nick, The usual answer is this is a bad idea for the generator. The only exceptions I know of are if the solar is a small percentage of the generator size, then its "probably" OK on the generator.
jay peltz power On Feb 15, 2010, at 7:27 AM, Nick Soleil wrote: > I have a couple of projects coming up, which will require additional work to > prevent connecting to a Generac Guardian's ATS panels. Do the same concerns > still exist regarding back-feeding an inverter to a generator panel? Can the > inverter damage the generator? I know this was the cases, at least > theoretically. Should I continue to be concerned? > > Nick Soleil > Project Manager > Advanced Alternative Energy Solutions, LLC > PO Box 657 > Petaluma, CA 94953 > Cell: 707-321-2937 > Office: 707-789-9537 > Fax: 707-769-9037 > > > From: Darryl Thayer <daryl_so...@yahoo.com> > To: RE-wrenches <re-wrenches@lists.re-wrenches.org> > Sent: Sat, February 13, 2010 5:51:33 PM > Subject: Re: [RE-wrenches] anti islanding? > > Hi August > I felt I was a little to cryptic in my answer, so here is a longer answer. > > > The inverter always tries to increase the frequency if it is connected to a > grid, it could never speed up all those billions of tons of rotating > equipment, so the frequency stays the same. If two inverters see themselves > they will both try to increase the frequency, they will succeed and if the > frequency is greater than the 60.5 HZ the inverter shuts off. If there is a > load that can stabilize frequency such as a synchronous motor they will > either speed up the motor or they will not be able and the motor will slow > down. Either way the frequency changes and the inverter shuts down for > frequency out of specification which is <60.5 or >59.3 else the inverter > shuts down. > > The inverter also looks at a voltage, and to sell power it wants to raise > voltage, necessary to put power into the grid. Unless the load exactly > matches the inverter power the voltage will rise or fall if the load is to > large and it will fall out of voltage specification shutting the inverter > down. > > One Last feature, the inverter is voltage commutated, and it looks for > voltage to add its power to. if you had purely a resistive load, both > inverters would wait for the voltage from the other inverter, and nothing > would get done. > > > > Think of it this way, for the system to last for 10 seconds, the speed of > this strange device (synchronus motor) cannot change speed more than 0.5% per > 10 second and it would coast for 30 minutes before stopping, and this motor > would have to be doing no work. > > --- On Sat, 2/13/10, August Goers <aug...@luminalt.com> wrote: > > > From: August Goers <aug...@luminalt.com> > > Subject: [RE-wrenches] anti islanding? > > To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org> > > Date: Saturday, February 13, 2010, 10:29 AM > > Hi Wrenches, > > > > Does anyone know where I can go to read about general > > information on how grid tied inver anti islanding works? I'd > > like to be able to describe this in better detail to our > > tech-savvy clients. > > > > Thanks, > > > > August > > > > > > August Goers > > > > Luminalt Energy Corporation > > O: 415.564.7652 > > M: 415.559.1525 > > F: 650.244.9167 > > www.luminalt.com > > _______________________________________________ > > List sponsored by Home Power magazine > > > > List Address: RE-wrenches@lists.re-wrenches.org > > > > 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 > > > > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > 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 > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > 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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