IEC 62061 is for safety related control systems, and also calls out swept 20 V/m for 80-1000 MHz. It doesn’t seem an unreasonably high level for testing, particularly in industrial environments that may have higher emissions.
IEC 62061:2021 specifies requirements and makes recommendations for the design, integration and validation of safety-related control systems (SCS) for machines. It is applicable to control systems used, either singly or in combination, to carry out safety functions on machines that are not portable by hand while working, including a group of machines working together in a co-ordinated manner. [cid:image912885.jpg@FE3CD5A9.160173B5] David Schaefer​ Technical Manager Element Materials Technology 9349 W Broadway Ave Brooklyn Park , MN 55445 , United States O +1 612 638 5136<tel:+1%20612%20638%205136> ext. 10461 david.schae...@element.com<mailto:david.schae...@element.com> www.element.com<https://www.element.com/> [cid:image090487.png@7D6784CD.3C04433D]<https://www.linkedin.com/organization-guest/company/element-materials-technology?challengeId=AQFf9AemZ4SobwAAAXOQwivOsnkHiTt2ByoCkOxVQjOGOjRlivicVgYlN1dz5QXjId9bpa0keWzfVxhl8KPj78uD6-S6nfqRsg&submissionId=e49e0dc0-96a3-2516-27fa-ee2e8c42b177> [cid:image914461.png@DFCDFFDD.0FA1422A]<https://twitter.com/ElementTesting/> [cid:image061216.png@8CE2C878.662C4A8C]<https://www.instagram.com/elementtesting/> [cid:image891303.png@FF411299.B159A737]<https://www.youtube.com/c/ElementTesting> [cid:image964301.jpg@0A7F6A0F.D9CD69CE]<https://elementmaterials.eu.qualtrics.com/jfe/form/SV_3xQqm84s6IydI5D> From: T.Sato [mailto:vef00...@nifty.com] Sent: Friday, July 21, 2023 7:21 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Immunity test field strength, residential setting CAUTION:This email originated from outside of Element Materials Technology. DO NOT click links or open attachments unless you recognize the sender and know the content is safe. Please contact IT Service Desk if you are in any doubt about this email. On Fri, 21 Jul 2023 16:44:29 GMT, Brian Gregory <brian_greg...@netzero.net<mailto:brian_greg...@netzero.net>> wrote: ... > We are building EV Chargers for residential markets (not just US) > and one of the safety applicable standards is UL 2231-2. It calls > out IEC 61000-4-3 for immunity testing parameters, which states a > requirement for a field strength of 20V/m. ... > Can some offer this "DC guy" (aka, 60 Hz) a > quick definition of what the 20V/m represents? ... It appears the standard is for personnel protection devices for use in charging systems, and not for other aspects of the EV chargers. Safety-related standards sometimes call for higher immunity test levels. For example, IEC 61000-6-7 calls for 20 V/m per IEC 61000-4-3 test method. Also, although the regulation will not usually be required in US and charging stations will not be covered by the regulation anyway, ECE R1 calls for 30 V/m per ISO 11451-2 also in charging mode. I don't know of the rationale, but I think 20 V/m is not unreasonably high to test safety aspects of the charging systems. Regards, Tom On Fri, 21 Jul 2023 16:44:29 GMT, Brian Gregory <brian_greg...@netzero.net<mailto:brian_greg...@netzero.net>> wrote: > Hello colleagues, We are building EV Chargers for residential markets (not > just US) and one of the safety applicable standards is UL 2231-2. It calls > out IEC 61000-4-3 for immunity testing parameters, which states a requirement > for a field strength of 20V/m. Our EMC expert says typically testing is "done > at 3 Vrms, which is standard for most products in residential environments." > He can only test up to 10V, and we're hearing the same from an overseas lab > to whom our manufacturer refers. Does FCC Part B have guidelines for field > strength we can cite? Can some offer this "DC guy" (aka, 60 Hz) a quick > definition of what the 20V/m represents? I'm guessing 20 V/m is for higher > density commercial applications, aka charging stations, so we probably need > an exception for residential. Thank you! Colorado Brian > 720-450-4933 > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. 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