<div dir="ltr"><div>Scott, Wrenches</div><div>We have had systems with the SMA storage but we have used the BYD and have had no problems so far with recharge and operations all as expected, it may be an issue with LG programming and the SMA not communicating properly</div><div>JUerry <br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jul 10, 2020 at 2:57 PM <<a href="mailto:scot.arey@solarcentex.com">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 class="gmail-m_-4657477985476396984WordSection1"><p class="MsoNormal">We have a design with Sunny Storage 6.0 inverter, SB 6.0 PV inverter, the SMA Automatic Backup Unit, and three LG Resu batteries. Works like a charm during normal grid ops but when it goes into backup ops, the Sunny Storage increases frequency to between 60.6 with blips up to 61 hertz, resulting in the PV inverter throttling back from 5,000+ watts to between 1,300 to 345 watts.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">The result is that the batteries do not recharge from the PV during backup mode, even when SoC is less than half capacity. This also means the max power through the ABU to the \u201cwhole house backup\u201d is the 6,000 watts from the Sunny Storage plus the (very) retarded power output of the SB PV inverter.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">SMA tech support just said, \u201cthat is normal, the LG Battery is the culprit and does not charge from PV in this setup.\u201d<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">I was stunned because why else would I buy this ABU coupling setup\u2026Anybody have any ideas? I\u2019m hoping the Sunny Storage freq shifting ramp-up parameters can be adjusted so that PV inverter operations continue when the battery is at a less than full SoC.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><img style="width: 3.0625in; height: 1.2083in;" id="gmail-m_-4657477985476396984Picture_x0020_1" src="cid:1733af2dbf34cff311" width="294" height="116"><u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p></div></div>_______________________________________________<br>
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