<div dir="ltr"><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:large">Hi Wrenches,</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:large">Thanks for your comments Jerry, Our company too has had issues with the problems you discuss. It basically seems that someone has misrepresented what is "doable" with the SMA storage inverter, ABU and Sunny Boy PV inverters. We made the mistake of installing 3 in a row and then finding out these issues with SMA. We really hate having customers mad at us! We thus avoid these situations like the plague, or these days the Covid! So what we have come to understand here is that you cannot AC couple SMA and the LG Chem battery. So what is the point of having the ABU?</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:large">Thanks to Scott for bringing these issues to light.</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:large">Vic Guillot</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:large">Sol Sierra, Inc.</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:large"><br></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><font face="comic sans ms, sans-serif" style="background-color:rgb(255,255,255)" color="#0000ff"><img src="https://drive.google.com/uc?id=1i6WANcT60uhIN__gmqu8lrZpoi6C97cR&export=download" width="96" height="64"></font></div><div><font face="comic sans ms, sans-serif" style="background-color:rgb(255,255,255)" color="#0000ff">Vic Guillot</font></div><div><font face="comic sans ms, sans-serif" style="background-color:rgb(255,255,255)" color="#0000ff">Sol Sierra, Inc.</font></div><div><font face="comic sans ms, sans-serif" style="background-color:rgb(255,255,255)" color="#0000ff">209.795.3554 office</font></div><div><font face="comic sans ms, sans-serif" style="background-color:rgb(255,255,255)" color="#0000ff">209.768.3560 mobile/text</font></div><div><br></div></div></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jul 15, 2020 at 2:38 PM Jerry Shafer <<a href="mailto:jerrysgarage01@gmail.com">jerrysgarage01@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Scot<div dir="auto">We do it pretty often and have never had an issue, right out of the gate we were told that BYD is the only battery option available, l understand your frustration but how did you determine that LG was an approved solution in the beginning. SMA is not perfict and I will say they do have an issue regarding stacking of the SBS's you just can not do it, but on the PV side it's all good.</div><div dir="auto">Jerry</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jul 15, 2020, 11:17 AM <<a href="mailto:scot.arey@solarcentex.com" target="_blank">scot.arey@solarcentex.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-US"><div><p class="MsoNormal">An update.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">LG ESS is simply not compatible with the SMA represented system of SMA storage inverter, Automatic Backup Unit, and its SMA PV inverter.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Just cannot AC Couple and use solar to recharge the batteries because as soon as the battery changes from charging to discharging, it bleeds off voltage in its DC to DC converter and that causes the storage inverter to drop\u2026and that causes the PV inverter to drop\u2026then it starts anew. <u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">SMA makes reference to this obliquely in it \u201cbackground knowledge\u201d documentation but even that asterisked verbiage doesn\u2019t drive home the point that one just cannot AC couple the PV inverter to gain solar charging. And of course if that\u2019s the case, why the heck would one even couple via a \u201cwhole house backup\u201d SMA Automatic Backup Unit??? The answer if course one would not.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Supposedly the BYD battery which is a true 400V battery and does not have the DC to DC converter does not have the same power lapses and will work in this architecture.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Let\u2019s see how SMA fixes this with their documentation representing this would all work.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><img width="294" height="116" style="width: 3.0625in; height: 1.2083in;" id="gmail-m_6681277426505113358m_3880923934555594273Picture_x0020_1"><u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p></div></div>_______________________________________________<br>
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