HI Darryl, Is this a UL listed application for the Radian/Outback?
And in following this thread about AC coupled: Given the higher efficiency of the batteryless inverter and fantastic MPP, vs the relatively high losses with the 600v xantrex or standard CC/inverter losses, I would use the AC couple technique. Jay peltz power On Mar 3, 2012, at 8:06 AM, Darryl Thayer wrote: > A few years back I made some year long measurements on an outback GVFX and a > sunny boy for net energy to the grid I got only a few percentages not 10% I > think one of the problems is the battery selection, these new batteries from > Outback seem to have very low self discharge so very little energy should be > expended to keep them charged. I am trying to close on a system where the > distance from the solar array to the house is far, so I am planning to AC > couple to a Radian to the grid, and I have been sucessful with AC coupleing > on GVFXs and Outback assures me it will workas well with theRradian. This > install is very sensitive to LOL (loss of load) and has the generator ready > to go, but for the short outages that he has it is a hassel. (he has worn > out one generator all ready, it was a construction grade genny) > > I am hoping if this system is a go to consider a Xantrex 600 volt charge > controller, but it depends upon the customer > thanks for the patence > Darryl > > From: Drake <[email protected]> > To: RE-wrenches <[email protected]> > Sent: Friday, March 2, 2012 9:31 AM > Subject: Re: [RE-wrenches] Grid-Tied, PV by AC or DC > > I think the AC coupled approach would be the best. For the 10KW system, a > pair of Sunny Islands fed by Sunny Boys would make an efficient system. > Since there is no generator, the system should be fairly straight forward. > > At 02:06 AM 3/2/2012, you wrote: > >> i think mark was asking more about ac coupling to get away from the horrible >> inefficiencies of battery based, grid-tied inverters. >> >> >> >> as an experiment, i have been thinking about ac coupling one (or more) of my >> arrays on my outback system to gain 10% over having the gvfx do the selling. >> >> >> >> stc to ptc usually costs about 20%, then losing another 10% in the inverter >> is a real performance hit. i advise customers about phantom loads and >> conservation, when actually the battery based inverter is itself the big >> lump under the carpet! >> >> >> >> todd >> >> >> >> >> >> >> >> >> >> >> >> On Thursday, March 1, 2012 7:07pm, "Maverick Brown [Maverick Solar]" >> <[email protected]> said: >> >> My two cents: >> "battery-based inverter w/ PV on the DC side via charge controllers" >> Simply replace the GT inverter with a Xantrex 600V Charge Controller plus >> the 48V Grid Interactive Inverter of your choice and added battery bank, etc. >> Until the market is saturated with unneeded GT Inverters, you will be ok. ;-) >> Try your best to provide enough battery for at least 24 hours of outage at >> 50% DOD. You may have add a Sub-Panel or Manual Transfer Switch. >> Thanks >> Maverick >> Maverick Brown >> BSEET, NABCEP Certified Solar PV Installer ® # 091209-26 >> President & CEO >> Maverick Solar Enterprises, Inc. >> Billing: PO BOX 1229, Dripping Springs, TX 78620 >> Office: 512-919-4493 >> Fax: 512-607-6398 >> Cell: 512-460-9825 >> Corporate: http://www.mavericksolarenterprises.com/ >> >> From: [email protected] [ >> mailto:[email protected]] On Behalf Of >> [email protected] >> Sent: Thursday, March 01, 2012 5:46 PM >> To: RE-wrenches >> Cc: 'RE-wrenches' >> Subject: Re: [RE-wrenches] Grid-Tied, PV by AC or DC >> >> excellent question mark... and one which has been on my mind as well, being >> most of my work is bbgt. >> >> >> >> todd >> >> >> >> >> >> >> >> On Thursday, March 1, 2012 11:37am, "Mark Frye" <[email protected]> >> said: >> >> Folks, >> >> I have a residential grid-tied customer in a net metered utility with a >> favorable TOU rate. >> >> They could use about 10 kW of PV to offset 100% of their usage. >> >> But, they also complain about regular power outages in their neigborhood. >> They don't want a generator. >> >> With reliable AC coupling now available, do we yet know which is the more >> advantagous architecture; grid-tied, battery-based inverter w/ PV on the DC >> side via charge controllers, or grid-tied, battery-based inverter w/ PV AC >> coupled via grid-tied, utility-based inverter? >> >> Your thoughts? >> >> Mark Frye >> Berkeley Solar Electric Systems >> 303 Redbud Way >> Nevada City, CA 95959 >> (530) 401-8024 >> www.berkeleysolar.com >> >> >> >> Sent from Finest Planet WebMail. >> >> >> >> Sent from Finest Planet WebMail. >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: [email protected] >> >> 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 > Drake Chamberlin > ATHENS ELECTRIC LLC > OH License 44810 > CO license 3773 > NABCEP Certified PV > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > 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: [email protected] > > 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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