<div dir="ltr"><div><div><div><div><div><div>Hi Drake,<br><br></div>I'm happy to discuss the ins-and-outs of this with you by phone. My cell phone is listed below. I have installed AC Coupled systems using Outback GVFX inverters and a 120-240 transformer. My experience is that this works fine. We have published a basic document on this, which is primarily focused on the major pitfalls;<br>
</div>- Protect the batteries from overcharging<br></div>- Don't exceed the pass through limit of the GVFX inverter<br></div>- Don't allow the Enphase microinverters to connect directly to the output of a generator<br>
<br></div>With the Outback GVFX inverters, I would recommend using the auxiliary relay of the Outback inverter to shut-off the microinverters with a relay when the batteries are charged.<br><br></div>The tech brief on AC Coupling is available under the tab for Tech Briefs at; <a href="http://enphase.com/global/resources/geo_us/">http://enphase.com/global/resources/geo_us/</a><br>
<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, May 28, 2014 at 2:47 PM, Drake <span dir="ltr"><<a href="mailto:drake.chamberlin@redwoodalliance.org" target="_blank">drake.chamberlin@redwoodalliance.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
Hello Wrenches,<br><br>
We put a system in a year ago with an Outback GVFX 3524 with 2205 W of PV
and a Midnite Solar Classic CC. The system owner would now like to expand
the system by another 6 modules.<br><br>
Our tentative plan is to AC couple 6 Enphase M-215s powered by 6
REC 255 W modules to the Outback. This way, the GVFX 3524 would be
selling power on its own while simultaneously feeding power back into the
grid through its transfer switch. <br><br>
The plan is to drop the voltage to 120 V using an autotransformer before
feeding the power into the protected loads panel for AC coupling.
<br><br>
Has anyone tried this configuration? Can anyone see any
problems?<br><br>
Thanks,<br><br>
Drake <br><br>
<a name="14644ce19bff3b19__MailAutoSig"></a>Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
<a href="tel:740-448-7328" value="+17404487328" target="_blank">740-448-7328</a><br>
</i><a href="http://athens-electric.com/" target="_blank">http://athens-electric.com/</a>
<br><br>
</div>
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<br></blockquote></div><br><br clear="all"><br>-- <br><div dir="ltr"><p style="margin:0in 0in 0.0001pt"><span style="font-size:14pt">Cordially,</span></p><p style="margin:0in 0in 0.0001pt"><b><span style="font-size:14pt">Nick Soleil</span></b><span style="font-size:14pt"></span></p>
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<span></span></p><p style="margin:0in 0in 0.0001pt"><span><a href="mailto:nsoleil@enphaseenergy.com" target="_blank"></a></span></p><p style="margin:0in 0in 0.0001pt"><span></span></p><span></span><p>“Don’t get me wrong: I love nuclear energy! It’s just that I prefer
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