Mac – what utility is this? My understanding is that IEEE 1547.1-2020 contains the details of the testing protocol so that devices CAN be listed to 1547-2018. It got published in late May 2020.
Are ANY inverters listed yet? My understanding is testing is a months long process and that would if the testing facilities have finalized the process they will use. Sounds like a way to force the transformer choice on you… Mike SMA America Michael Mahon Technical Trainer, Solar Academy 6020 West Oaks Boulevard, Suite 300 Rocklin, CA 95765 U.S.A. Mobile: +1 916 918 9412 www.SMA-America.com<http://www.sma-america.com/> Solar Academy: https://solaracademy.sma.de/en.html SMA America Solar Academy webinars: https://solaracademy.sma.de/en/courses.html Choose "United States" [A picture containing drawing, food Description automatically generated]<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.sma-america.com%2FShadeFix&data=02%7C01%7CMichael.Mahon%40sma-america.com%7Ceb737bd7586646b4d14b08d811405661%7Ca059b96c28294d1188374cc1ff84735d%7C0%7C0%7C637278315315432372&sdata=uyZ5K7ayyl6y%2Fa90qQ0%2F4r8WSV0PYLK1CYMJQxPVeCQ%3D&reserved=0> [Linkedin Logo]<http://www.linkedin.com/company/364675> [cid:[email protected]] <http://www.youtube.com/playlist?list=PL840A5336CAC32332> [SMAAFORUM_ICON] <http://smaadvance.com/signup/> Follow, Like, Share This email and any attachments thereto may contain SMA America, LLC confidential, privileged and private material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. Thank you. From: RE-wrenches <[email protected]> On Behalf Of Mac Lewis Sent: Wednesday, August 26, 2020 4:47 PM To: RE-wrenches <[email protected]> Subject: [RE-wrenches] Stackable Battery-Based systems complying to IEEE 1547-2018 standard Hi Wrenches, I am working on a design for an all-electric home whole-house backup. The utility is requiring either an inverter listed to IEEE 1547-2018 or utilize an effective grounding transformer with associated relay control system. Im unclear whether the grounding transformer is on the customer side or on the utility side, but I'd prefer to avoid this if possible. I probably need ~20kW of continuous backup in this case. I prefer to have everything stacked if possible, but I may be able to split up my critical load panels. Has anyone worked through this issue? I was planning on Sol-Ark but they don't comply with the IEEE 1547-2018 quite yet. I'm open to suggestions. Thanks -- Mac Lewis "Yo solo sé que no sé nada." -Sócrates
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