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--></style><title>Re: [RE-wrenches] Efficiency Curves of Fronius
Inverters?</title></head><body>
<div>Thanks Mark!</div>
<div><br></div>
<div>Nice source I wasn't aware of!</div>
<div><br></div>
<div>jc</div>
<div><br></div>
<div><br></div>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#0000FF">Jeff,</font></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#0000FF">Here is what they submitted to the California Energy
Commision:</font></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><a
href=
"http://www.gosolarcalifornia.ca.gov/equipment/inverter_tests/summaries/Fronius%20IG%204000.pdf"><span
></span
>http://www.gosolarcalifornia.ca.gov/equipment/inverter_tests/summari<span
></span>es/Fronius%20IG%204000.pdf</a></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1">Mark
Frye</font><br>
<font face="Arial" size="-1">Berkeley Solar Electric
Systems</font><br>
<font face="Arial" size="-1">303 Redbud Way</font><br>
<font face="Arial" size="-1">Nevada City, CA 95959</font><br>
<font face="Arial" size="-1">(530) 401-8024</font><br>
<a href="http://www.berkeleysolar.com/"><font face="Arial" size="-1"
color="#0000FF"><u>www.berkeleysolar.com</u></font></a><font
face="Arial" size="-1"> </font></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite>
<hr></blockquote>
<blockquote type="cite" cite><font face="Tahoma"
size="-1"><b>From:</b> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org]<b> On Behalf Of</b>
Jeff Clearwater, Village Power Design<br>
<b>Sent:</b> Wednesday, July 08, 2009 3:35 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> [RE-wrenches] Efficiency Curves of Fronius
Inverters?</font><br>
<font face="Tahoma" size="-1"></font></blockquote>
<blockquote type="cite" cite>Hey Folks,</blockquote>
<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite>Anyone have or know where I can get my
hands on the efficiency vs. wattage curve for the Fronius IG series
(the old series - not the Plus).</blockquote>
<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite>I have a 4000 in stock and wondering if I
can apply it to a friend's 2660 watt system without losing much to
efficiency at low power levels.</blockquote>
<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite>Best,</blockquote>
<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite>Jeff</blockquote>
<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite><br>
<blockquote type="cite" cite>There are numerous options here:
most ground mount manu's offer ballasted systems, I would look
to them 1st. Other systems I've seen or used - 1) Pour a continuous
surface "footer" that is large enough in size to provide the
proper ballast for the uplift in your area, pour one along the S.
edge/legs and another along the back/north legs. 2) Tie all legs
together via a horiz. rail at least 6' wide and embed this in a rock
filled gabion, again of the required weight. 3) Limestone is easy to
drill, useing a hammer drill and extension bit drill 11/16" -
3/4" holes at least 18" into the stone at an angle, vary all
angles as viewed in plan as they relate to the N/S line of the array
(not as they relate to level), to mitgate pull-out from them all being
in a line. i.e. - 1st leg hole is 90 degrees to the N/S line, 2nd leg
is 180 from this, 3rd is 45 and so on, in other words if looking in
plan and you could see all holes they would radiate around the
"face of a clock" with each leg hole on a different
"hour". Finally, epoxy in 5/8" all thread, you can
pre-bend the end to come out of the hole verticle or use a swivel
connector from Uni-strut, B-line or equal.<br>
</blockquote>
<blockquote type="cite" cite>All of these suggestions should be run by
a Structural Engineer before embarking, thus the 1st choice of working
with a manu.<br>
</blockquote>
<blockquote type="cite" cite><br>
<br>
</blockquote>
<blockquote type="cite" cite>Good luck!<br>
</blockquote>
<blockquote type="cite" cite>-jeff o<br>
<br>
>From the Solar, Wind and Hydro powered office of Jeff
Oldham/Regenerative SOLutions<br>
</blockquote>
<blockquote type="cite" cite><font size="-1"><br>
<br>
____________________________________________________________<br>
</font><a
href=
"http://thirdpartyoffers.juno.com/TGL2132/fc/BLSrjnsHGiu92lJJqoMGi0uE8kGS8cyBf0zjvb0ir0FblIZfJXPnNi0BtXC/"><span
></span>Protect your home before it is too late. Click here for
homeowner insurance information.</a><br>
</blockquote>
<blockquote type="cite" cite><br>
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<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite><tt>--</tt></blockquote>
<blockquote type="cite" cite>~~~~~~~~~~~~~<br>
Jeff Clearwater<br>
Senior Design Engineer<br>
NABCEP (tm) Certified Solar PV Installer<br>
http://www.nabcep.org/<br>
Village Power Design/NorthEast Solar Design<br>
Turnkey Solar Design & Installation for the Commercial Sector<br>
http://www.villagepower.com<br>
gosolar@villagepower.com<br>
<br>
Voice: 413-259-3776<br>
Fax: 413-825-0703<br>
65 Schoolhouse Rd<x-tab>
</x-tab><br>
Amherst, MA 01002<br>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</blockquote>
<blockquote type="cite" cite><br>
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<x-sigsep><pre>--
</pre></x-sigsep>
<div>~~~~~~~~~~~~~<br>
Jeff Clearwater<br>
Senior Design Engineer<br>
NABCEP (tm) Certified Solar PV Installer<br>
http://www.nabcep.org/<br>
Village Power Design/NorthEast Solar Design<br>
Turnkey Solar Design & Installation for the Commercial Sector<br>
http://www.villagepower.com<br>
gosolar@villagepower.com<br>
<br>
Voice: 413-259-3776<br>
Fax: 413-825-0703<br>
65 Schoolhouse Rd<x-tab>
</x-tab><br>
Amherst, MA 01002<br>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div>
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