<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Hi jerry</div><div><br></div><div>Can you give any insight as to the failure mechanism? </div><div><br></div><div>I guess I don't understand why bad AC would damage the inverter, I mean besides the obvious bad equipment design. </div><div><br></div><div>Jay</div><div>Peltz power. </div><div><br>On Jan 29, 2016, at 3:18 PM, Jerry Shafer <<a href="mailto:jerrysgarage01@gmail.com">jerrysgarage01@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><p dir="ltr">We have seen something very close, it appears that the gwnny will always win this war.<br>
Jerry</p>
<div class="gmail_quote">On Jan 29, 2016 1:14 PM, "Jason Szumlanski" <<a href="mailto:jason@floridasolardesigngroup.com">jason@floridasolardesigngroup.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I'm looking at two Eaton PV250 inverters that failed simultaneously as far as we know (not my install). Everything checked out normal, but no display and no power output. I suspect both boards are bad. Upon digging into the scenario I discovered that the owner had a whole-house generator transfer switch installed a while back, after the PV was installed. The PV is a load side interconnection, so calamity should have been expected.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">What are the odds that the generator caused the inverter boards to fail? I was always under the impression that it was more likely for a generator component to be damaged than an inverter component in this scenario. It could be coincidence and the inverters may have just failed around the same.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Note: ~10kW PV, 25kW Generator</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Side note: The PV was interconnected at a 50A breaker on a 200A bus bar in the main distribution panel and somehow passed inspection by an AHJ that shall not be named... Over 120%, and also not the correct OCPD rating anyway for these two inverters. Passed plan review and inspection... Contractor out of business... surprise!</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Jason Szumlanski</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Florida Solar Design Group</div><div><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><span></span></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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