Thanks for the suggestions, everyone. Looks like I have 3 solid options to work with.
Chris, this specific project was designed with two points of interconnection. One 10kW inverter on the Sonnen’s critical loads panel and the other 10 kW on the main distribution panel. Wanting to stick with the same manufacturer while avoiding having to use 3 separate inverters (and an additional accumulation panel for the 2 inverters upstream of the Sonnen) I figured that the DC contactor trick would probably be the easiest way out. Thanks again for the assist On Sun, Nov 24, 2019 at 10:06 AM Chris Sparadeo <[email protected]> wrote: > Thanks for the suggestions, everyone. Looks like I have 3 solid options to > work with. > > Chris, this specific project was designed with two points of > interconnection. One 10kW inverter on the Sonnen’s critical loads panel and > the other 10 kW on the main distribution panel. Wanting to stick with the > same manufacturer while avoiding having to use 3 separate inverters (and an > additional accumulation panel for the 2 inverters upstream of the Sonnen) I > figured that the DC contactor trick would probably be the easiest way out. > > Thanks again for the assist > > On Sat, Nov 23, 2019 at 7:49 PM Glenn Burt <[email protected]> wrote: > >> Not sure if the application notes are still available – here is one I >> have had since taking their training a couple of years ago. Hope it helps. >> >> >> >> -Glenn >> >> >> >> *From:* RE-wrenches <[email protected]> *On >> Behalf Of *Chris Sparadeo >> *Sent:* Friday, November 22, 2019 10:47 PM >> *To:* RE-wrenches <[email protected]> >> *Subject:* [RE-wrenches] 600V DC contactor >> >> >> >> Hi wrenchers, >> >> >> >> I am currently on the look out for a DC contactor to suit my needs. A >> little background: >> >> >> >> Per Sonnen Batterie tech support’s recommendation I have installed a 10 >> kW SolarEdge HD Wave inventer coupled with the Sonnen Eco 12. Although the >> Sonnen Eco 12 uses an Outback Radian 8kW multimode inverter(of which >> Outback suggests to max AC couple input of 5kW) Sonnen says that AC PV >> input greater than 8kW will require a contactor to interrupt a string >> or two of the grid interactive inverter so that it’s output will remain >> less than the max 8kW input. That’s fine and well, but when asked directly, >> Sonnen didn’t have a part # for the contactor and suggested that anything >> over 150V DC would be difficult to find. Anyone know of a 600V rated >> contactor that would suit the bill? Essentially the contactor would need to >> sense grid interruption (via a 15A-AC breaker) and open a 600 V rated DC >> string. >> >> >> >> I’ve done some preliminary searching and have come up empty handed. Any >> input would be greatly appreciated. >> >> >> >> Best, >> >> >> >> Chris >> >> -- >> >> Chris Sparadeo >> >> >> >> >> >> C_802-369-4458 >> >> H_802-728-3059 >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/[email protected]/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> -- > > *Chris Sparadeo* > > *NABCEP Certified PV Installation Professional # 042919-015652* > > Catamount Solar, LLC > > 4 Randolph Ave., Randolph, VT 05060 > > C_(802) 369-4458 > > O_(802) 728-3600 > > www.CatamountSolar.com <http://www.catamountsolar.com/> > > > > -- Chris Sparadeo C_802-369-4458 H_802-728-3059
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