<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Drake,<div><br></div><div>I have done this, or I think what you are asking.</div><div><br></div><div>I have AC coupled 2 enphase 190s through a transformer to a VFX-3525 in an offgrid situation.</div><div><br></div><div>It worked fine.</div><div>However I did notice when there were very little loads I got what I think is an AC ripple.</div><div>I would see some lights having I think a 60 cycle flicker.</div><div><br></div><div>But I don't think that being grid connected you will see any issues.</div><div><br></div><div>jay</div><div><br></div><div>peltz power</div><div><br></div><div><br><div><div>On May 28, 2014, at 2:47 PM, Drake wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
<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="_MailAutoSig"></a>Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
740-448-7328<br>
</i><a href="http://athens-electric.com/">http://athens-electric.com/</a>
<br><br>
</div>
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