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Jason, etal<br>
<br>
Another Schneider/Xantrex option to consider.<br>
<br>
Xantrex will be adding the MPPT 80 to their product line (orderable
this month). This new charge controller will allow high voltage
strings (600V, as opposed to 150V for current CC). It will also
integrate into the existing 4024 inverters via the XAN-Bus for
charge control.<br>
<br>
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<p class="MsoNormal" style="margin-bottom: 0.0001pt;
line-height: normal;"><span style="font-size: 10pt;">Regards,<br>
<br>
<br>
Gary Willett, PE<br>
<span class="SpellE">Icarus</span> Engineering / Solar
Services LLC<br>
NABCEP Certified Solar PV Installer # 031310-246</span><br>
<br>
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On 5/3/2011 9:15 AM, Jason Szumlanski wrote:
<blockquote
cite="mid:8EA9619B465C95438B31C92F854FB79678FFA6@exchange.fafcosolar.local"
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<div class="WordSection1">
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);">Interesting.
It’s only “off-grid” when the grid goes down, which is
presumably not often in this case. I think the actual
Enphase position is that this “may void warranty.” In
practice, I doubt they would a) ask, b) know, and c)
actually disallow a warranty claim unless there is
system-wide damage that can be directly attributed to the
off-grid setup.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);">But
to be safe I would advise the customer of this issue and
make a case for using the Xantrex GT or another brand that
does not make the same exception.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);">Thanks
for the info!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size: 12pt;
font-family: "Cambria","serif"; color:
rgb(31, 73, 125);">Jason<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<div>
<div style="border-right: medium none; border-width: 1pt
medium medium; border-style: solid none none; border-color:
rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color;
padding: 3pt 0in 0in;">
<p class="MsoNormal"><b><span style="font-size: 10pt;
font-family:
"Tahoma","sans-serif";">From:</span></b><span
style="font-size: 10pt; font-family:
"Tahoma","sans-serif";">
<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>Mark Frye<br>
<b>Sent:</b> Tuesday, May 03, 2011 9:32 AM<br>
<b>To:</b> 'RE-wrenches'<br>
<b>Subject:</b> Re: [RE-wrenches] AC Coupling Xantrex XW
Inverters toEnphaseMicroinverters<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size: 10pt; font-family:
"Arial","sans-serif"; color: blue;">Jason,</span><span
style="font-size: 12pt; font-family: "Times New
Roman","serif";"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; font-family:
"Times New Roman","serif";"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 10pt; font-family:
"Arial","sans-serif"; color: blue;">My
guess is that this will work just fine.</span><span
style="font-size: 12pt; font-family: "Times New
Roman","serif";"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; font-family:
"Times New Roman","serif";"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 10pt; font-family:
"Arial","sans-serif"; color: blue;">My
comment is that according to my conversations with Enphase,
they would consider this an "off-grid" application for which
they do not warranty their product.</span><span
style="font-size: 12pt; font-family: "Times New
Roman","serif";"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; font-family:
"Times New Roman","serif";"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 10pt; font-family:
"Arial","sans-serif"; color: blue;">If
this is the case, it is something your customer should
understand upfront.</span><span style="font-size: 12pt;
font-family: "Times New Roman","serif";"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; font-family:
"Times New Roman","serif";"> <br>
</span><span style="font-size: 10pt; font-family:
"Arial","sans-serif";">Mark Frye</span><span
style="font-size: 12pt; font-family: "Times New
Roman","serif";"> <br>
</span><span style="font-size: 10pt; font-family:
"Arial","sans-serif";">Berkeley Solar
Electric Systems</span><span style="font-size: 12pt;
font-family: "Times New Roman","serif";">
<br>
</span><span style="font-size: 10pt; font-family:
"Arial","sans-serif";">303 Redbud Way</span><span
style="font-size: 12pt; font-family: "Times New
Roman","serif";"> <br>
</span><span style="font-size: 10pt; font-family:
"Arial","sans-serif";">Nevada City, CA
95959</span><span style="font-size: 12pt; font-family:
"Times New Roman","serif";"> <br>
</span><span style="font-size: 10pt; font-family:
"Arial","sans-serif";">(530) 401-8024</span><span
style="font-size: 12pt; font-family: "Times New
Roman","serif";"> <br>
<a moz-do-not-send="true"
href="http://www.berkeleysolar.com/"><span
style="font-size: 10pt; font-family:
"Arial","sans-serif";">www.berkeleysolar.com</span></a></span><span
style="font-size: 10pt; font-family:
"Arial","sans-serif";"> </span><span
style="font-size: 12pt; font-family: "Times New
Roman","serif";"> <o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size: 12pt;
font-family: "Times New
Roman","serif";"> <o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-size: 12pt; font-family:
"Times New Roman","serif";"><o:p> </o:p></span></p>
<div class="MsoNormal" style="text-align: center;"
align="center"><span style="font-size: 12pt; font-family:
"Times New Roman","serif";">
<hr width="100%" align="center" size="2"></span></div>
<p class="MsoNormal" style="margin-bottom: 12pt;"><b><span
style="font-size: 10pt; font-family:
"Tahoma","sans-serif";">From:</span></b><span
style="font-size: 10pt; font-family:
"Tahoma","sans-serif";">
<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>Jason Szumlanski<br>
<b>Sent:</b> Tuesday, May 03, 2011 6:18 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> [RE-wrenches] AC Coupling Xantrex XW
Inverters to EnphaseMicroinverters</span><span
style="font-size: 12pt; font-family: "Times New
Roman","serif";"><o:p></o:p></span></p>
<p class="MsoNormal">I read the application note here:<o:p></o:p></p>
<p class="MsoNormal"><a moz-do-not-send="true"
href="http://www.global-download.schneider-electric.com/852577A4005D7372/all/8FA29D94B918A0FB8525781F0072FCA7/$File/ac-coupling-app-note%28976-0240-01-01_rev-a%29.pdf">http://www.global-download.schneider-electric.com/852577A4005D7372/all/8FA29D94B918A0FB8525781F0072FCA7/$File/ac-coupling-app-note(976-0240-01-01_rev-a).pdf</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">…and I contacted Xantrex to make sure the
application note applies to other brands of grid-tie
inverters. It does according to the rep I spoke with.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I just wanted to find out if there is any
real world experience out there with Enphase and the XW series
AC coupled. I have a customer with three XW4024’s in single
phase configuration set up as a battery backup only now. He
wants to add up to 10kW. I suggested Enphase as an AC coupled
system (mainly due to the distance to the proposed array). I’m
aware of the pitfalls noted in the application note regarding
high limit shutoffs. Any thoughts?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size: 12pt; font-family:
"Cambria","serif"; color: rgb(31, 73,
125);">Jason Szumlanski<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; font-family:
"Cambria","serif"; color: rgb(31, 73,
125);">Fafco Solar</span><span style="font-size: 8pt;
font-family: "Cambria","serif"; color:
rgb(31, 73, 125);"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
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