On Fri, 21 Jul 2023 16:44:29 GMT, Brian Gregory <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> 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. To post a message to the list, send your e-mail to > <emc-p...@ieee.org> > > All emc-pstc postings are archived and searchable on the web at: > https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ > > Website: https://ewh.ieee.org/soc/pses/ > Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to > unsubscribe) > List rules: https://ewh.ieee.org/soc/pses/listrules.html > > For help, send mail to the list administrators: > Mike Sherman at: msherma...@comcast.net > Rick Linford at: linf...@ieee.org > > For policy questions, send mail to: > Jim Bacher: <j.bac...@ieee.org> > _________________________________________________ > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: msherma...@comcast.net Rick Linford at: linf...@ieee.org For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
