Tump, As luck would have it, all my contact business cards are at my home office - 300 miles away from where I am at the moment. I would use the [EMAIL PROTECTED] general address until I get back and dig up a better one. We are sending a few guys over to the factory in Germany to further push our point of view, :-)
Matt T ---- Tump <[EMAIL PROTECTED]> wrote: > Hey Matt, put their address here, so we ALL can forward this message to the > right folks @ SMA! > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Matt Tritt > Sent: Wednesday, November 26, 2008 7:31 PM > To: RE-wrenches > Subject: Re: [RE-wrenches] More on AC coupling - SI and SB > > > Geoff, > > SMA suggests using an OutBack Autoformer. Yes, I know it sounds weird to > suggest using a competitors product, but this is not the only weirdness when > using the 60 Hz SI system! They also suggest using the Flexware DC breaker > box, as there is really nothing they make that accomplishes the same thing, > at such a low cost. Low is subjective, I suppose. > > I asked a pair of the SMA engineers from Germany about the possibility of > coming out with a 240 60 Hz version (pleaded is more like it) to help the > long suffering American AE sector, and the answer was just what has been > suggested by our Scottish bretheren: If the market is large enough to > warrant the UL listing procedure, and if the market will bear a slightly > higher price tag, they will do it. I would recommned that each and every one > of us that would like to have the option of somehting as great as this > system has to offer, PLEASE email, phone and write to SMA Amerika (ho ho ho) > to express your wishes. It can't hurt! > > Matt T > > Geoff Greenfield wrote: > > Matt- > > > > What is your prefered/recomended way to address the 240 VAC SB series (we > typically dont want to use a bunch of 700s or 1800s) and the 120 VAC SI > series? We used a pair of Outback PSX-240s but that was extra work/cost. > Other (larger) transformers? Torroid coil? Eaton? I'm surprised SMA doesnt > have a nice interface worked out for the North American market... > > > > Also wrenches... if you go down this route, invest the time ahead of time on > learning/preping for the set up etc for SI in this application. It is not > out of the box ready to go, but involves a software upgrade, laptops and the > right patch cord (an issue if you are 5 hours away...). > > > > For a brighter energy future, > > Geoff Greenfield > Founder and CEO > Third Sun Solar & Wind Power Ltd. > 340 West State Street, Unit 25 > Athens, OH 45701 > > 740.597.3111 Fax 740.597.1548 > www.Third-Sun.com > > Clean Energy - Expertly Installed > > > > > > > > ----- "Tump" <mailto:[EMAIL PROTECTED]> <[EMAIL PROTECTED]> wrote: > > > Matt, I have long been interested in installing the SMA SI & SBs but I have > a VERY tough time selling $9ks worth of inverters, just to get things > started. > In the system below I would not of hesitated in installing the SMA SI & SB! > I too agree that w/this type of scenario described below, I would have > given quite a bit of thought to using the SMAs. Can't beat the battery > charging, no charge controllers & expandability. > Please if there is someone out there that has had experience w/ the SMA SI > & SB let us know if it is all that it is cracked up to be! > With passport in hand, I offer my help if someone out there has a large > system like this, that will be using the SI & SB/WB type of set up. > TUMP > > > -----Original Message----- > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Matt Tritt > > Sent: Tuesday, November 25, 2008 9:21 PM > > To: RE-wrenches > > Subject: Re: [RE-wrenches] More on AC coupling > > > I am curious as to why OutBacks were used for this system instead of using > SunnyIslands and SunnyBoys? From what I can tell about the SI system, > virtually no aspect of battery charging, auto gen-start/stop, and > interactive inverter control has been overlooked - or remains to be > engineered in the field by the installer. Because SunnyIslands have the > ability to "talk" to Sunny (or Windy)Boys, excess energy is taken care of by > "integrated load shedding" - no need for multiple relays, dumpoads and > voltage sensors. :-) The only limitation to these systems (and only in 60 Hz > land) is a maximum of 20 kW single, and 15 kW three phase per autonomous > load. I really like the flexibility of being able to connect all AC inputs > on the same line, as well as having the option to do direct battery charging > from a DC source (as long as you use a shunt to measure current). > > I know this doesn't answer your questions, but for similar applications in > the future it would be good to take a close look at the SunnyIsland system. > They're cool. > > Matt T > > Mark Dickson wrote: > > > > > Hello Wrenches, > > On the heels of the previous thread: > > We just got finished installing a system that utilizes an Outback Quad stack > and a 5.2kW array coupled to the AC panel via a Fronius IG5100--due to a > long home-run. The VFX's are wired into the home in their traditional > manner, providing the "grid" for the Fronius. As the solar comes in, excess > power not used in the home back feeds the batteries through the VFX's. I > have a series of relays operating dump loads and finally a power cut-off for > when the batteries reach critical level. We installed the system yesterday > and turned it on for a test run (then back off to power it up in 2009 for > the ITC's)-it worked great! > > > > I have a couple questions for you all: > > * Seems how we are back feeding the inverters and forfeiting their > charge control, where would you set the dump loads to kick on? > > > * For now I have them set at: 1st load to kick on at float voltages, > 2nd to kick on at bulk voltages and 3rd to kick the solar power off at the > EQ voltages. Does this make sense? The bank is made up of Rolls 4ks-25ps > batteries. > > * Following a recent discussion on the Wrenches list with a similar > system: Do I need to worry about back feeding the generator if it is runnin > in the morning when the sun comes up? Do I need a relay that will shut it > down when solar comes on line? > > * I plan on setting the Absorb and Float set times to a miimum. Would > you recommend this? > > > > Thanks for your input! > > > > Mark Dickson > > Oasis Montana Inc. > > > > > > _____ > > > _______________________________________________ > > 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 <http://www.members.re-wrenches.org/> > > > > > > > _____ > > > > Internal Virus Database is out of date. > > Checked by AVG - http://www.avg.com <http://www.avg.com/> > > Version: 8.0.175 / Virus Database: 270.9.4/1794 - Release Date: 11/17/2008 > 8:48 AM > > > > > > > > _______________________________________________ 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 > > > > > > > _____ > > > > Internal Virus Database is out of date. > > Checked by AVG - http://www.avg.com > > Version: 8.0.175 / Virus Database: 270.9.4/1794 - Release Date: 11/17/2008 > 8:48 AM > > > > > _______________________________________________ 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
