Thanks all for your input; John is correct, the CE limits were taken from 61000-6-3, I misread the plot.I'm not quite sure why, but I can elaborate, and we can debate, later. For now, I have a more basic question: where in the Subchapter A/Part 15 regulations does it spell out the manufacturer's responsibility in terms of my somewhat vexing situation: A = FCC Class B compliant chargerB = UNECE Reg10 compliant EV A+B tested together are N/C to a non-FCC test? This is made more vexing by the results clearly showing the combination would be N/C to most EMC limits, (89.6 dBuV!) thanks, Brian ---------- Original Message ---------- From: John Woodgate <[email protected]> To: [email protected] Subject: Re: [PSES] Hazards, risks with EMC emissions? Date: Thu, 28 Aug 2025 18:40:23 +0100
Yes, 61000-6-3 is a possibility, but it is a Generic standard, applicable only to products that are out of scope of all IEC/CISPR product and product-family standards. On 2025-08-28 18:28, [email protected] wrote: Most likely is was IEC 61000-6-3 which was used. (emission standard for equipment in residential environment. (and not 61000-3-3) In that standard the conducted emissions test was performed. (150kHz-30 MHz) From: John Woodgate <[email protected]> Sent: donderdag 28 augustus 2025 0:31 To: [email protected] Subject: Re: [PSES] Hazards, risks with EMC emissions? That would be 61000-3-2; 61000-3-3- is about power-supply voltage fluctuations due to input current fluctuations. Is that QP data from radiated emissions? Can you look at the waveform to see if you can identify the cause of (what you appear to be reporting as) the broadband emission between 168 kHz and 1 MHz? A good 100 kHz high-pass filter may be needed. On 2025-08-27 22:33, Brian Gregory wrote: Ralph noted: > For the Method yes, but as John Woodgate pointed out, you need another CISPR > or > EN standard to defined limits. They used IEC 61000-3-3 Cl. B for the conducted emissions. On top of that, the QP data we saw showed a smooth line from (~ 90dBuV at 168 kHz "corrected"), on a linear slope down to ~ 1MHz, whereupon the data started looking like a typical EMC plot; jagged lines with some peaks. The first peak was at 2MHz. Both me and the Engr VP looked at the plot on a big screen, and said ... WTF? The Averaged data showed only very small squiggles with the same slope, starting at 58.6dBuV at 170 kHz "corrected" and started showing regular sized peaks and bumps at about 2 Mz. These are the weirdest test results I've seen; but I have no where the experience as most of you. We're meeting again with the customer this afternoon, and I'm still poorly informed on: What is the hazard or risk? Colorado Brian Please note: message attached From: Ralph McDiarmid <[email protected]> To: [email protected] Subject: Re: [PSES] Hazards, risks with EMC emissions? Date: Tue, 26 Aug 2025 13:34:20 -0700 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 -- 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 religionThis 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
