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<DIV><SPAN class=811343823-18092014><FONT face=Arial color=#0000ff size=2>Our
firm has installed many Sunny Island hybrid gen cycle charge systems. In my
experience they are hands down the most reliable inverter system out there
for this application. Many sites that have been working perfectly with 100%
uptime over several years. Most sites we visit once a year to check and there
are no issues at all. </FONT></SPAN></DIV>
<DIV><SPAN class=811343823-18092014><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=811343823-18092014><FONT face=Arial color=#0000ff size=2>There
are many small tricks on the install side to get to reliability like that. While
the menus with the 8 characters and all manner of acronyms can be daunting, once
it's configured there's generally no changes needed. Tying in the webbox option
makes it a lot friendlier to program and monitor. </FONT></SPAN></DIV>
<DIV><SPAN class=811343823-18092014><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=811343823-18092014></SPAN><SPAN class=811343823-18092014><FONT
face=Arial color=#0000ff size=2>My direct experience does not match with the
last paragraph comments. The only problematic installs we have worked on were
installed by others and not installed well. </FONT></SPAN></DIV>
<DIV><SPAN class=811343823-18092014><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=811343823-18092014><FONT face=Arial color=#0000ff size=2><FONT
face=Arial size=2>Kevin Pegg</FONT> <BR><FONT face=Arial size=2>EA Energy
Alternatives Ltd. </FONT><BR><FONT face=Arial size=2>37471 Hwy 16 E</FONT>
<BR><FONT face=Arial size=2>Telkwa, BC V0J 2X2</FONT> <BR><FONT face=Arial
size=2>250-846-9888</FONT> <BR><FONT face=Arial size=2><A
href="http://www.energyalternatives.ca/"
target=_blank>Http://www.EnergyAlternatives.ca</A> </FONT></DIV></FONT></SPAN>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> RE-wrenches
[mailto:re-wrenches-bounces@lists.re-wrenches.org]<B>On Behalf Of </B>William
Miller<BR><B>Sent:</B> September 17, 2014 10:23 PM<BR><B>To:</B>
RE-wrenches<BR><B>Subject:</B> [RE-wrenches] Sunny Island sending power to the
generator??<BR><BR></FONT></DIV>
<DIV class=WordSection1>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'">Colleagues:<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'">I was invited to
troubleshoot a Sunny Island system. What I found is a Sunny Island
mini-grid system behaving oddly. The generator, when started with the
SI, would run for a few minutes and then shut down. Further
investigation revealed that the SIs were indicating that the inverters were
sending lots of power back to the generator, even with the Sunny Boy turned
off. <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'">I don’t know if
this was actually the case, nor can I grasp how this could happen. The
system was programmed as a PV/Gen only system. Fortunately I reached an
off-grid tech at SMA and we were able to resolve the issue. I am not
sure what we did but I suspect that simply rebooting the Sunny Islands was the
cure.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'">I post this in case
any of you experience this problem and could benefit from my experience.
Also, I want to understand this better. Could it be true that the
inverters could send power to the generator? I know the circuitry is
there to sell to AC2, which is how this system would work as a true
grid-interactive system, but how did it get triggered? Was it
battery-selling to the generator? I welcome any
comments.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'">What I am starting
to think is that the Sunny Island system, like any feature rich system, is
complicated and has the potential to be less reliable than simpler
systems. On the plus side I could also think of these systems as job
security for the knowledgeable technician.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'">Sincerely,<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'">William<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'"><IMG
id=Picture_x0020_1 height=28 alt="Gradient Cap_mini"
src="cid:811343823@18092014-2b6d" width=64><BR>Lic 773985<BR><A
href="http://www.millersolar.com/">millersolar.com</A><BR>805-438-5600<o:p></o:p></SPAN></P>
<P class=MsoNormal><o:p> </o:p></P></DIV></BLOCKQUOTE></BODY></HTML>