There has been lot's of feedback regarding this question, but I think the
safest advice of all has been missed: if in doubt, get the answer from a
Competent Body, in writing. If anyone ever challenges your selection of
standards, you have justification on file. Make up your mind which
standard you want to use and then give the CB you reasoning and ask for
their agreement (or lack of) with your choice.
Regards,
Jim Eichner
Statpower Technologies Corp.
Burnaby, B.C., Canada
jeich...@statpower.com
Any opinions expressed are those of my invisible friend who really
exists. Honest.
-----Original Message-----
From: slrate@anetMHS (SLR){MHS:slr...@earthlink.net}
Sent: Friday, August 22, 1997 2:42 AM
To: jonb@anetMHS (Jon Bertrand){MHS:j...@cirris.com}; JEichner; bceresne
Cc: emc-pstc@anetMHS{MHS:emc-p...@majordomo.ieee.org}
Subject: Re: Which EMC Directive Standards might apply here?
Jon Bertrand wrote:
>
>
>
> Lots of people are saying EN55011. I must really be missing
> something.
>
> EN55011's title is:
>
> Limits and Methods of measurement of radio disturbance
characteristics
> of industrial, scientific and medical (ISM) radio-frequency
equipment.
>
> Note the _radio-frequency_ designation.
>
> Section 4 says:
>
> Classification of ISM equipment.
>
> [blah, blah]
>
> 4.1 Separation into groups
>
> Group 1 ... equipment in which there is intentionally generated
and/or
> used conductively coupled radio frequency energy which is
necessary
> for the internal functioning of the equipment itself.
>
> Group 2 ... equipment in which radio frequency energy is
intentionally
> generated and/or used in the form of electromagnetic radiation for
the
> treatment of material, and spark erosion equipment.
>
>
>
> Does your device use RF energy to do the work you need done? If
not
> then you don't use EN55011.
>
> My experience is way too many people use EN55011 because of the
ISM
> label. It's for surgical knives (spark gap knives) and spectrum
> analyzers.
>
>
> Does this sound correct?
>
> Jon Bertrand
> j...@cirris.com
>
>You are quite correct John. Many people do incorrectly use EN 55011
for gen
ral laboratory equipment, and fail to realize that it applies to devices
that
se RF energy.
It is a shame though that European EMC standards have such vague and
sometimes overlapping scopes. If you read the scope of EN55104 for
example, it seems it could be applied to all most all residential,
commercial and light industrial equipment.
Regards,
Simon Rate
EMC Manager
Intertek Testing Services, Los Angeles.
>
>
