The SW's are real early in the process and we doubt the 65% or so efficiency makes sense especially with the battery losses in the process. The other dealer told me the GTI's were not available anyway, but I haven't checked. He was looking for the interface relay when I came into this process. When I get down there I will check the date. it is 3 hours from here.
Thanks, Bob On Wed, Mar 25, 2009 at 7:56 PM, Tump <t...@hughes.net> wrote: > What year are the SWs? they have had grid inter tie for years, if the > inverters were manufactured prior to I think 2001 then you do not need to > have the gti box installed. If the guys on a budget why spend the extra > $$$$? Its not the most efficient it certainly cheaper. > > -----Original Message----- > *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: > re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *robert ellison > *Sent:* Wednesday, March 25, 2009 9:39 AM > *To:* RE-wrenches > *Subject:* [RE-wrenches] Battery based grid tie question. > > On a similar question to what works well together. I am rebuilding the wind > side of an old off grid system that the new owner has brought the grid in. > He wants to grid tie the system. Another dealer is doing the solar side of > things. > My thoughts are the 48 volt SW inverters need to go, and replace them with > Outback 48 volt grid tie units and have the wind keep the battery up. Am I > correct that when the batteries are full from what ever source the outbacks > will grid connect and net meter any excess power to the grid? Seems that I > remember that they will but almost never get a call for grid tie up here in > the sticks so I figured I would ask the knowledge base. > > I would suggest he keep the SW inverters to generator charge in case of a > long power outage as last I knew the Outbacks (FX) did not care for > generator power. > > I could probably research it but the list is faster and probably more > accurate that reading all the manuals with all my free time these days! > > Needless to say the fellow in on a budrgt and the power company brought the > power into the main building not the power house. Can't make things > easy...... > > Thanks, > Bob > > 2009/3/23 <i...@aol.com> > >> Wrenches, >> >> I have been doing some experimenting --testing compatibility between >> brands of grid tie inverters and sign wave battery type inverters. I am >> hoping some of you also have some experience here and we can compare >> results. >> >> My interest is fueled by my belief that AC coupling is the ideal way to >> increase system capacity for battery based off grid systems. The primary >> benefit is higher system efficiency for AC loads used during the day. I >> realize that power management becomes important but my interest right now is >> just to find out who talks to who. My ultimate "power management" tool will >> be an electric vehicle. Charging it will undoubtedly suck up available >> juice. >> >> So far: >> >> SMA synchronizes to Xantrex SW (have not tested the XW yet) and Outback >> and of course the SMA Sunny Island >> >> Xantrex GT also syncs to the SW >> >> I started this project with Enphase as my first choice since their system >> is so scaleable. I have been unable to make Enphase sync. Marv at Enphase >> has been very helpful but to date no results. I have, at Marv's suggestion >> ,used capacitors to clean the somewhat hashy SW output without results. Marv >> tells me he is testing Enphase and Outback. Does anyone have experience >> syncing Enphase to other offgrid inverters? >> >> Any experiences with Fronius and others.? >> >> Though the SW output is not the cleanest, the results with SB and GT are >> very stable. They hookup early AM and its steady green light all day long. >> Though I use microwave, start induction motors etc, and my scope clearly >> shows lots of spikes during these events, the GT and SB hang in. >> >> What are the experiences from others regarding mix and match?. >> Interoperability among brands seems to be a very desirable goal to this >> wrench. >> >> Don Loweburg >> Offline Solar, Inc >> >> ------------------------------ >> *A Good Credit Score is 700 or Above. See yours in just 2 easy >> steps!<http://pr.atwola.com/promoclk/100126575x1219858252x1201366219/aol?redir=http:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgID%3D62%26bcd%3DMarchfooterNO62> >> * >> >> _______________________________________________ >> 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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