[PSES] Conducted Immunity test for EMC

Hi All I'd like to inquire about the conduction resistance test. What is *L* in the picture below? 1. Distance between CDN and EUT 2. Length of cable between CDN and EUT [image: image.png] - This message is from the IEEE Product

Re: [PSES] 61010-1 hazardous live classification

Then again, what is the effective value of the 42Vpeak pulsed d.c. ? Does it exceed the Vrms limit at your highest duty ratio? You mentioned a 0.01% minimum on-time, but what is the maximum? From: James Pawson (U3C) Sent: Monday, February 26, 2024 5:38 AM To: EMC-PSTC@LISTSERV.IEEE.ORG

Re: [PSES] 61010-1 hazardous live classification

Thanks Scott. I will read that preview. From: Scott Aldous Sent: Monday, February 26, 2024 3:21 PM To: rmm.priv...@gmail.com Cc: EMC-PSTC@listserv.ieee.org Subject: Re: [PSES] 61010-1 hazardous live classification Use of shock hazard limits in terms of voltage in product safety

Re: [PSES] 61010-1 hazardous live classification

Use of shock hazard limits in terms of voltage in product safety standards is already a simplification. See IEC 60479-1 and -2. You can find the free preview of IEC 60479-1 here , with a good high level discussion in the scope. On

Re: [PSES] 61010-1 hazardous live classification

I suspect many of the standards committee have merely adopted the Vpeak limit from other standards without giving it much thought. Note that 42.4Vpk is just root2 x 30Vrms. That seems to be all there is to it and I doubt it's mere coincidence. (60Vdc/30Vrms/42.4Vpk found in several standards)

Re: [PSES] 61010-1 hazardous live classification

Hi James: In the pulse mode, 46 volts peak exceeds the 42.4 volts peak limit. In accordance with the 61010 standard, the voltage cannot be accessible in the pulse mode. However, the pulse mode is dc (the current does not reverse). The RMS of such a pulse is 46 times the square root of

Re: [PSES] MTBF Calculations / testing

I can't resist asking if you have left a 'p' off the last but one word? On 2024-02-26 17:58, Brian Gregory wrote: Can anyone recommend a lab or company to help us run some MTBF calculations for a N. American residential appliance? -- Signature OOO - Own Opinions Only Best wishes John Woodgate,

[PSES] Household safety in the Internet era

For those who use IEC 60335. here is a superficial (and non-technical) look. https://etech.iec.ch/issue/2024-01/household-safety-in-the-internet-era Richard Nute Bend, Oregon, USA - This message is from the IEEE Product Safety

Re: [PSES] MTBF Calculations / testing

Brian, this discussion list is for all Regulatory Compliance questions, not just EMC. So your question is not off topic. Jim Bacher, WB8VSU ja.bac...@outlook.com or j.bac...@ieee.org On February 26, 2024 1:00:14 PM Brian Gregory wrote: Hello, this is a little off topic for an EMC board,

[PSES] MTBF Calculations / testing

Hello,this is a little off topic for an EMC board, but y'all have a great ken ("ken" not _Ken_ Wyatt, even as great as he is). Can anyone recommend a lab or company to help us run some MTBF calculations for a N. American residential appliance? thank you, Colorado Brian -

Re: [PSES] 61010-1 hazardous live classification

An immaculate analysis and air-tight conclusion, as I see it. From: James Pawson (U3C) Sent: Monday, February 26, 2024 5:38 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] 61010-1 hazardous live classification Hello all, I hope this safety question is a fairly simple one for

Re: [PSES] 61010-1 hazardous live classification

I think you analysis is correct. On 2024-02-26 13:38, James Pawson (U3C) wrote: Hello all, I hope this safety question is a fairly simple one for you, it being Monday after all… 1. A piece of equipment with a power supply output for driving a lamp. It has two modes, DC and pulsed. 2.