Andy,
I have not used 62493 so I'm not familiar with the details; I
looked it up on the IEC website to get an idea as to what it covered and
reported their summary.
In reading thru this I see several points here.
1) The broad band radiation up to 300MHz must be for radiated emissions;
2) light itself is very limited in frequency and bandwidth so this must
apply to the SMPS which are driving the lamps. Interestingly enough I have
seen quite robust Touch Current measurements from LED lighting SMPS; which
will eventually be tamed by proper Touch Current measurements which include
the up to 1Mhz HF portion allowed by the human body response to HF current.
But note that these HF components exist and can give rise to both conducted
and radiated emissions;
3) SAR measurements indicate radiated emissions which would apply to LED
systems (including their SMPS) which are worn on or close to the human body
in their application.
Perhaps someone else on this thread has more definite insight
into the application and the need for these requirements; it would be good
to hear from them.
:>) br, Pete
Peter E Perkins, PE
Principal Product Safety & Regulatory Affairs Consultant
PO Box 23427
Tigard, ORe 97281-3427
503/452-1201
IEEE Life Fellow
<mailto:[email protected]> [email protected]
From: McCallum, Andy <[email protected]>
Sent: Monday, April 9, 2018 7:52 AM
To: Pete Perkins <[email protected]>
Subject: RE: [PSES] BS EN 62493:2015 Assessment of lighting equipment
related to human exposure to electromagnetic fields
Pete
Thanks yes it is LED so not an issue. Out of interest what type of lighting
does it cover? The exemption list is quite comprehensive.
Andy
From: Pete Perkins [mailto:[email protected]]
Sent: 29 March 2018 19:11
To: McCallum, Andy <[email protected]
<mailto:[email protected]> >; [email protected]
<mailto:[email protected]>
Subject: RE: [PSES] BS EN 62493:2015 Assessment of lighting equipment
related to human exposure to electromagnetic fields
Andy,
Just to clarify:
Abstract; IEC 62493:2015 applies to the assessment of lighting equipment
related to human exposure to electromagnetic fields. The assessment consists
of the induced internal electric field for frequencies from 20 kHz to 10 MHz
and the specific absorption rate (SAR) for frequencies from 100 kHz to 300
MHz around lighting equipment. This second edition cancels and replaces the
first edition published in 2009. This edition constitutes a technical
revision. This edition includes the following significant technical changes
with respect to the previous edition:
a) identification of lighting product types deemed to comply with the
standard without the need for test;
b) deletion of the need for CISPR-15-compliance as a prerequisite for IEC
62493 compliance;
c) inclusion of the consequences of the ICNIPR 2010 guidelines for (up to
100 kHz);
d) adding some guidance to the Van der Hoofden test head method to improve
reproducibility of results;
e) inclusion of compliance demonstration method for products having
intentional radiators.
Does your lighting product fall under the exemption?
:>) br, Pete
Peter E Perkins, PE
Principal Product Safety & Regulatory Affairs Consultant
PO Box 23427
Tigard, ORe 97281-3427
503/452-1201
IEEE Life Fellow
<mailto:[email protected]> [email protected]
From: McCallum, Andy <[email protected]
<mailto:[email protected]> >
Sent: Thursday, March 29, 2018 7:28 AM
To: [email protected] <mailto:[email protected]>
Subject: [PSES] BS EN 62493:2015 Assessment of lighting equipment related to
human exposure to electromagnetic fields
Anyone have any experience of this standard? Do any lighting systems get
close to the ICNIRP limits?
Any thoughts welcome
Andy
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