Hello Ray -- Can you elaborate on why these battery-based projects are getting killed here locally? Is it the misinterpretation by AHJs that 690.12 has to disconnect the inverter from the battery bank with giant shunt-trip breakers? If that were the case...backup generators would have to be controlled by rapid shutdown too, and I don't think that can of worms has been opened yet.
Dan Fink Professor of Solar Energy Technology, Ecotech Institute IREC Certified Instructor™ for: ~ PV Installation Professional ~ Small Wind Installer Executive Director, Buckville Energy NABCEP Registered Continuing Education Providers™ 970.672.4342 On Sat, Mar 25, 2017 at 8:04 PM, Ray <[email protected]> wrote: > Not to muddy the waters, but how does the SMA system deal with 690.12 > Rapid Shutdown requirements in OG and GTB arrangements? 690.12 has been > killing battery based projects left and right here in Colorado. > > Thanks, > > R. Ray Walters > Chief Technical Officer, RemoteSolar.com > BS Mech Engineering, 1988 > Former NABCEP Certified, 2004-2016 > Licensed Master ELectrician, Colorado303 505-8760 <(303)%20505-8760> > > On 3/25/17 6:46 PM, Jeff Clearwater wrote: > > Hi Howie, > > So Jay found this from previous posts (below). So apparently the -40 > series will work in Off-grid mode (as long as you program the SBs > separately to be in OG) but won't do the switching of modes necessary for > grid-tie backup. I plan on a call to SMA tech support Monday morning to > get to the bottom of what exactly is lost without the RS485 comm. And to > see if TLs are still going to work as the new SIs tech sheet shows they are > not supported. why I have no idea but I intend to find out. > > hope that helps. > > Best, > > Jeff > > Begin forwarded message: > > *From: *Drake <[email protected]> > *Subject: **Re: [RE-wrenches] SMA US 40 & AC coupling* > *Date: *March 13, 2017 at 10:23:56 AM PDT > *To: *RE-wrenches <[email protected]> > *Reply-To: *RE-wrenches <[email protected]> > > I talked with Tim at SMA today, and the new Sunny Boy inverters will > provide taper charging with the Sunny Islands even though no RS 485 > communication is available. The Sunny Boys need to be programmed in the off > grid mode, and the Sunny Islands will take care of the UL 1741 requirements. > > > The graph below shows the relation between frequency shift and % power > produced by the Sunny Boy inverters. > [image: Emacs!] > > Drake Chamberlin > > > > > > *Athens Electric LLC OH License 44810 CO License 3773 NABCEP Certified > Solar PV 740-448-7328 <(740)%20448-7328> *http://athens-electric.com/ > At 11:36 AM 3/10/2017, you wrote: > I just checked with SMA and they do not have an RS485 card for the -40 > inverters. What this means is that you can set them up to be permanently in > off grid mode where the SB will follow the frequency shift of the SI, ok > for an off grid system. But for grid tie with backup, the SB will not > communicate with the SI and will not change the SB to off grid mode. It > will still work like other generic AC coupled systems where the frequency > shift will cause the SB inverter to drop off line, but as far as I know no > throttling back will happen. > > Brad > > > > Howie Michaelson wrote: > > I'm confused. Does this mean the -40 series are not compatible with SI off > grid mode? Or they don't adjust output due to frequency shift? Or? > > Howie > Howie Michaelson > NABCEP Certified Solar PV Installer™ > > Sun Catcher > Renewable Energy Systems Sales and Service > VT Solar Electric Incentive Partner > 802-272-0004 <(802)%20272-0004> > > On Mar 25, 2017 7:59 PM, "Tump" <[email protected]> wrote: > >> Jeff the bad news is yer outa luck BUT they "had a work around" that was >> discussed on the list a few weeks ago. I looked quickly but didn’t see it >> posted. You were going to install a RS 485 card/ module that had the soft >> ware to make it work. I found this out just as these “Newest latest n >> greatest inverters" were just coming out, looked at the manual, and much to >> my disappointment I had to send it back and educate my salesperson to this. >> Lucky for me I was able to get the TL series. Ill keep on looking, if you >> don’t have any luck I do have a contact at SMA…. at least he was there 2 >> weeks ago, contact me off list. Tump >> >> On Mar 25, 2017, at 12:10 PM, Jeff Clearwater < >> [email protected]> wrote: >> >> All, >> >> Can anyone confirm for me that the SUNNY BOY 3.0-US / 3.8-US / 5.0-US / >> 6.0-US / 7.0-US / 7.7-US series is or is not supported by the Sunny >> Island in off-grid AC coupling mode? The technical paper on the subject >> here http://files.sma.de/dl/7910/SB-OffGrid-TI-US-en-18.pdf does not >> list them but I'm hoping it's cause that paper is dated Feb '16. >> >> I sure hope they are because that paper shows they discontinued support >> the the SUNNY BOY 3000TL-US / 3800TL-US / 4000TL-US / 5000TL-US / >> 6000TL-US / 7000TL-US / 7700TL-US series! Why!?? >> >> Hope you have good news for me! >> >> Best, >> >> Jeff >> >> -- >> Jeff Clearwater >> Village Power Design >> Renewable Energy Design & Installation >> Ecovillage Design Consultant >> >> Licensed Solar Contractor in CA - C-46 >> www.villagepowerdesign.com <http://www.villagepower.com/> >> 413-559-9763 <%28413%29%20559-9763> >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> _______________________________________________ >> 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/re >> [email protected]/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> *[email protected]* *www.SWNL.net* >> Solarwinds Northernlights >> * Serving Mid Coast Maine & Northern California* >> * 207-832-7574 <%28207%29%20832-7574> Cl. >> 610-517-8401 <%28610%29%20517-8401> * >> *Blair "TUMP" May* >> >> >> * ******** MAINE'S CHARTER ******** * * >> NABCEP "Certified PV Installer"* >> >> >> * ******** MAINE'S CHARTER ******** ** >> Trace Xantrex "Certified" Dealer / Installer"* >> >> >> >> >> _______________________________________________ >> 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/re >> [email protected]/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> _______________________________________________ > 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 > > > > -- > Jeff Clearwater > Village Power Design > Renewable Energy Design & Installation > Ecovillage Design Consultant > > NABCEP™ Certified Solar PV Installer > Licensed Solar Contractor in CA - C-46 > www.villagepowerdesign.com <http://www.villagepower.com> > 413-559-9763 <(413)%20559-9763> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > > _______________________________________________ > 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 > > > > _______________________________________________ > 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]. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > >
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