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Geoff,<br>
<br>
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 <i>also </i>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.<br>
<br>
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!<br>
<br>
Matt T<br>
<br>
Geoff Greenfield wrote:
<blockquote
cite="mid15113924.1261121227713256910.JavaMail.root@zimbra4.mindcentric.com"
type="cite">
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style="font-family: Times New Roman; font-size: 12pt; color: rgb(0, 0, 0);">
<p>Matt-</p>
<p> </p>
<p>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...</p>
<p> </p>
<p>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...).<br>
<br>
</p>
<div>For a brighter energy future,<br>
<br>
Geoff Greenfield<br>
Founder and CEO<br>
<font size="4"><strong>Third Sun Solar & Wind Power Ltd.<br>
</strong></font>340 West State Street, Unit 25<br>
Athens, OH 45701<br>
<br>
740.597.3111 Fax 740.597.1548<br>
<a class="moz-txt-link-abbreviated" href="http://www.Third-Sun.com">www.Third-Sun.com</a><br>
<br>
<em><font size="4">Clean Energy - Expertly Installed<br>
</font></em><br>
<br>
<br>
<br>
</div>
<br>
<br>
----- "Tump" <a class="moz-txt-link-rfc2396E" href="mailto:tump@hughes.net"><tump@hughes.net></a> wrote: <br>
>
<div><span class="718182213-26112008"><font color="#0000ff"
face="Arial" size="2">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.</font></span></div>
<div><span class="718182213-26112008"><font color="#0000ff"
face="Arial" size="2">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.</font></span></div>
<div><span class="718182213-26112008"></span><span
class="718182213-26112008"><font color="#0000ff" face="Arial" size="2"> 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!</font></span></div>
<div><span class="718182213-26112008"><font color="#0000ff"
face="Arial" size="2">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.</font></span></div>
<div><span class="718182213-26112008"><font color="#0000ff"
face="Arial" size="2">TUMP</font></span></div>
<blockquote style="margin-right: 0px;" dir="ltr">
<div class="OutlookMessageHeader" align="left" dir="ltr"
lang="en-us">> <font face="Tahoma" size="2">-----Original
Message-----<br>
> <b>From:</b> <a class="moz-txt-link-abbreviated" href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>
[<a class="moz-txt-link-freetext" href="mailto:re-wrenches-bounces@lists.re-wrenches.org">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Matt
Tritt<br>
> <b>Sent:</b> Tuesday, November 25, 2008 9:21 PM<br>
> <b>To:</b> RE-wrenches<br>
> <b>Subject:</b> Re: [RE-wrenches] More on AC coupling<br>
> </font></div>
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).<br>
> 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.<br>
> Matt T<br>
> Mark Dickson wrote:
<blockquote cite="mid1227629891_11368@gwa5">
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<div class="Section1">>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; color: navy; font-family: Arial;">Hello
Wrenches,</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; color: navy; font-family: Arial;">On the heels
of the previous thread:</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; color: navy; font-family: Arial;">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!</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; color: navy; font-family: Arial;"></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; color: navy; font-family: Arial;">I have a
couple questions for you all:</span></font></p>
<ul style="margin-top: 0in;" type="disc">
<li class="MsoNormal" style="color: navy;"><font color="navy"
face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Seems how we are back
feeding the inverters and forfeiting their charge control, where would
you set the dump loads to kick on?</span></font> <font face="Arial"
size="2"><span style="font-size: 10pt; font-family: Arial;"></span></font>
<ul style="margin-top: 0in;" type="circle">
<li class="MsoNormal" style="color: navy;"><font
color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">For now I have them set
at: 1<sup>st</sup> load to kick on at float voltages, 2<sup>nd</sup> to
kick on at bulk voltages and 3<sup>rd</sup> to kick the solar power off
at the EQ voltages. Does this make sense? The bank is made up of
Rolls 4ks-25ps batteries.</span></font> <font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"></span></font></li>
</ul>
</li>
<li class="MsoNormal" style="color: navy;"><font color="navy"
face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">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?</span></font> <font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"></span></font>
</li>
<li class="MsoNormal" style="color: navy;"><font color="navy"
face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">I plan on setting the
Absorb and Float set times to a miimum. Would you recommend this?</span></font>
<font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"></span></font></li>
</ul>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; color: navy; font-family: Arial;"></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; color: navy; font-family: Arial;">Thanks for
your input!</span></font></p>
<div>
<div>
<div>
<p class="MsoNormal"><font color="navy" face="Comic Sans MS"
size="2"><span
style="font-size: 10pt; color: navy; font-family: 'Comic Sans MS';"></span></font></p>
<p class="MsoNormal"><font color="navy" face="Comic Sans MS"
size="2"><span
style="font-size: 10pt; color: navy; font-family: 'Comic Sans MS';">Mark
Dickson</span></font><font color="navy"><span style="color: navy;"></span></font></p>
<p class="MsoNormal"><font color="navy" face="Comic Sans MS"
size="2"><span
style="font-size: 10pt; color: navy; font-family: 'Comic Sans MS';">Oasis
Montana Inc.</span></font><font color="navy"><span style="color: navy;"></span></font></p>
</div>
</div>
</div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;"></span></font></p>
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Internal Virus Database is out of date.
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