The "Door Open" switch is a very useful feature. I am trying to get Fronius to put a digital shutdown terminal on its CL line of inverters, or all inverters preferably. We need to pressure all the inverter manufacturers to provide a logic in or dry contact method of shutdown. Most ATS will provide a N/O dry to indicate position.
On Thu, Feb 13, 2014 at 10:21 PM, Jerry Shafer <jerrysgarag...@gmail.com>wrote: > I have done systems in Hawaii, here is one with a 30 k PV system and with > a 250k Cummins back up genny. We have a contactor in the ATS that will open > if the genny is operating, this in turn sends a door open signal to the > Satcon shutting it down I don't want anything effecting the genset > operation so with the open created in the ATS it tricks the inverter to > shut off safely. We as a policy will not run a genset and PV unless as a AC > coupling system and you have some active over voltage like freq and voltage > triggers. > Jerry > On Feb 8, 2014 7:31 AM, "Kirk Herander" <k...@vtsolar.com> wrote: > >> Hello, >> >> >> >> I recently posed the question to Solaredge tech support, wondering if >> their inverter, in this case a 20kw 480 3-phase, would have any issues if >> it were connected to an AC panel backed up by a generator. They told me no >> problem, for the inverter's anti-islanding will work if it sees the >> "generator frequency" and therefore will not try to push PV power to the >> panel. But isn't 60 hz, 60hz regardless of origin? There's got to be more >> to it than that. I question this because I asked the same to SMA several >> years ago and they were hard-set against connecting Sunnyboys to a panel >> with generator backup, so I always would establish the point of >> interconnection upstream of the generator feed. Comments? Thanks. >> >> >> >> Kirk Herander >> >> VT Solar, LLC >> >> dba Vermont Solar Engineering >> >> NABCEPTM Certified Inaugural Certificant >> >> NYSERDA-eligible Installer >> >> VT RE Incentive Program Partner >> >> 802.863.1202 >> >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change email address & 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 > > Change email address & 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 > > > -- Chris Mason President, Comet Systems Ltd www.cometenergysystems.com Cell: 264.235.5670 Skype: netconcepts
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