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<p>The inverter is set to ON not to SEARCH. If the Enphase circuit is switched off, the pulsing stops immediately. This system has both AC and DC coupling. </p>
<p>In another location, with a Sunny Boy AC coupled with a pair of stacked VFX3524 inverters, there is some pulsing in low light conditions. The Radian and Enphase combo is much more noticeable.</p>
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<p id="reply-intro">On 2020-08-25 10:42, Jerry Shafer wrote:</p>
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<div dir="auto">Wrenches
<div dir="auto">I would think that in time there might be damage. Check to make sure the inverter is not on search but I stead "ON", next if you turn off the enphase the the outback perform normally. Check the inverter frequency to see your frequency is shifting have one that has both AC & DC Coupling and no issues.</div>
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<div class="v1gmail_attr" dir="ltr">On Tue, Aug 25, 2020, 6:37 AM <<a href="mailto:drake.chamberlin@redwoodalliance.org" rel="noreferrer">drake.chamberlin@redwoodalliance.org</a>> wrote:</div>
<blockquote class="v1gmail_quote" style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;">Hello Wrenches,<br /><br />An AC coupled arrangement, with an 8 kW Radian and 8 Enphase <br />microinverters, pulses lighting at low levels of array illumination. <br />This is generally not too much of a problem.<br /><br />Under certain levels of solar isolation, the pulsing becomes extreme and <br />causes the motors in the refrigerator and air-conditioner to pulse, <br />sometimes causing very audible vibrations.<br /><br />Will this harm the appliances? Is there anything that can be done to <br />moderate or stop the pulsing?<br /><br />Thank you,<br /><br />Drake<br />Athens Electric LLC<br /><br />-- <br />_______________________________________________<br />List sponsored by Redwood Alliance<br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" rel="noreferrer">RE-wrenches@lists.re-wrenches.org</a><br /><br />Change listserver email address & settings:<br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br /><br />List-Archive: <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br /><br />List rules & etiquette:<br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">www.re-wrenches.org/etiquette.htm</a><br /><br />Check out or update participant bios:<br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">www.members.re-wrenches.org</a><br /><br /></blockquote>
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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">_______________________________________________<br />List sponsored by Redwood Alliance<br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br /><br />Change listserver email address & settings:<br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br /><br />List-Archive: <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br /><br />List rules & etiquette:<br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">www.re-wrenches.org/etiquette.htm</a><br /><br />Check out or update participant bios:<br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">www.members.re-wrenches.org</a><br /><br /></div>
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