UN ECE Reg 10 references CISPR 16-2-1 for powerline conducted
emissions, so that seems like the most appropriate method to use.
David Schaefer
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*From:*Ken Javor <[email protected]>
*Sent:* Monday, August 25, 2025 11:08 AM
*To:* [email protected]
*Subject:* Re: [PSES] Hazards, risks with EMC emissions?
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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 <http://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
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