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<DIV>Mark, </DIV>
<DIV> </DIV>
<DIV> The only thing I would add to all
your good points is the addition of a 7700 watt TL which is of course perfect to
stay under the 20% for load side connection of a 200A service.</DIV>
<DIV> </DIV>
<DIV>Bill</DIV>
<DIV> </DIV>
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align=baseline border=0></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=markb@cobaltpower.com href="mailto:markb@cobaltpower.com">Mark
Byington</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=RE-wrenches@lists.re-wrenches.org
href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, October 07, 2014 6:58
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] TL
Inverters</DIV>
<DIV><BR></DIV>
<DIV class=WordSection1>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Just a word of caution to
those not having experience with SMA TL inverters - the larger units (7-11 kW)
have an extremely narrow input DC voltage window. Depending on your
module voltage and string design, all you need is a module or two to be shaded
to fall out of the MPPT input voltage range. The smaller units (3-5 kW)
with the Secure Power Supply don't have this problem. We no longer use
these larger SMA TL inverters unless we can do maximum string length (e.g.
strings of 8 for SunPower 96-cell) and there is zero shade at the
site.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">I believe SMA is in the
process of adding larger units to the line that has the Secure Power
Supply. They added the 6 kW unit earlier this year, and just announced
the 7 kW unit with Secure Power Supply.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Mark
Byington<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Cobalt Power Systems,
Inc.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><o:p> </o:p></P></DIV>
<P>
<HR>
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