CISPR 25 only applies to protection of on-board receivers, which means it only applies to equipment part of the automobile. The EV charger is described as part of the home or office, not the vehicle. Neither CISPR 25 or CISPR 12 apply.
-- Ken Javor Ph: (256) 650-5261 From: Karen Burnham <[email protected]> Reply-To: ***** IEEE emc-pstc List ***** <[email protected]> Date: Monday, August 25, 2025 at 10:02 AM To: <[email protected]> Subject: Re: [PSES] Hazards, risks with EMC emissions? The test methods between CISPR and FCC are really different, and as John said, CISPR 12 shouldn't apply to this at all. Would it be possible to test to CISPR 25 instead? That's a much closer match. Best, -=-Karen Burnham President and Chief Engineer, NCE EMC United, Inc. www.emcunited.com On Fri, Aug 22, 2025 at 1:48 PM John Woodgate <[email protected]> wrote: CISPR 12 does not apply to such a charger. This is quite explicit in the Scope clause. I would tell you to go to the IEC Webstore and take a read-only look at the Scope, but perversely, what you get is the French version. CISPR 12 covers radiated emissions, 30 MHz to 1000 MHz, so I don't understand what you are getting at with conducted emissions below 200 kHz. On 2025-08-22 19:46, Brian Gregory wrote: Hello, We market an EV charger to the N. American market. We've been contacted by major automotive OEMs for partnerships, some white labeling, etc. Recently, one decided to test a charger in chamber with an EV to CISPR12 levels, even though it's an off-board charger qualified as a residential appliance. So, while the unit passes FCC Class B emissions, some testing during EV charging shows emissions above CISPR12 limits. We and our potential customer are trying to reason out why the unit failed, and what are the implications for passing FCC Class B, while not passing CISPR12. The way I like to approach sticky issues on the edge of compliance is to identify and address the hazard posed. So, with EMC emissions some number of dB(uV) above those limits (all towards the low end of allowed conducted limits, < 200 kHz), in a typical residential installation on or near a garage, and typical usage, i.e., not closely attended for any extended length of time: what are the hazards or risks posed? Not being much of an EMC guy, I've never really had to think too much on this issue. Being a long time safety guy, I have NEVER had an issue related to EMC from which to draw experience. What say you, my colleagues? Colorado Brian 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 [email protected] All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://pses.ieee.org/wp-content/uploads/2024/12/EM-PSTC-List-Rules.pdf For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher at: [email protected] To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 -- Best wishes John Woodgate RAYLEIGH Essex OOO-Own Opinions Only www.woodjohn.uk If something is true: * as far as we know - it's science *for certain - it's mathematics *unquestionably - it's religion Virus-free.www.avg.com 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 [email protected] All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://pses.ieee.org/wp-content/uploads/2024/12/EM-PSTC-List-Rules.pdf For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher at: [email protected] 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 [email protected] All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://pses.ieee.org/wp-content/uploads/2024/12/EM-PSTC-List-Rules.pdf For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher at: [email protected] 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 [email protected] All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://pses.ieee.org/wp-content/uploads/2024/12/EM-PSTC-List-Rules.pdf For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
