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<div class="moz-cite-prefix">Erika,<br>
This just came up for us recently. I learned this, surprisingly,
from a Customer Generation tech at our local utility. We are
installing a GTWB system with two SI5048s and two SB5000s. The CG
tech spoke with SMA tech support about the possibility of the SIs
selling back to the utility as well as the SBs. He learned that
there is a software patch that can be installed in the SIs that
will allow them to do this, but that SMA will only allow the patch
to be installed upon receiving written permission from the
utility. This was sufficient for our utility to consider our
system to be a 10kW interconnected system.<br>
<br>
This is all I know that may help you; I heard nothing about "3
seconds". You might want to explore this further with SMA tech
support.<br>
Allan<br>
<br>
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<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a href="mailto:Allan@positiveenergysolar.com"><font
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<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
Founder and Chief Technology Officer<br>
<b>Positive Energy, Inc.</b><br>
3209 Richards Lane (note new address)<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
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On 10/18/2012 7:38 AM, Erika Weliczko wrote:<br>
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<p class="MsoNormal">Greetings all.<o:p></o:p></p>
<p class="MsoNormal">I recently received this back regarding an
interconnection application proposing a Sunny Island 6048 and
a SB7000:<o:p></o:p></p>
<p class="MsoNormal">“we have to rate the system at the max
output of the inverters, and since that battery backup has an
inverter that can export 11kW, (albeit for 3 seconds) I have
to review the system for a total of 18kW.”<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This is a new one on me. I might argue that
the SB7000 is upstream of the SI6048 and really the SI6048 is
the point of interconnection, so the SB7000 is irrelevant. And
3 seconds is not really continuous operation.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It seems that batteryless inverters show
continuous output ratings, though I know there are some that
specify a larger than expected OCP for various reasons, but
that is not what the utility cares about.<o:p></o:p></p>
<p class="MsoNormal">Any insights here? <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Erika<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Century
Gothic","sans-serif"">REpower SOLUTIONS<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Century
Gothic","sans-serif""><a class="moz-txt-link-abbreviated" href="http://www.repowersolutions.com">www.repowersolutions.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Century
Gothic","sans-serif"">P: 216.268.2275<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Century
Gothic","sans-serif"">C: 216.402.4458<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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