On 8/29/2008, Neven wrote:
In telco interfaces, e.g. FXS, FXO, xDSL, if I have a clamp device for
lightning protection connected from lines to the safety GND, is the safety
isolation requirement still met? Assume that without the clamp device all the
clearances and hi-pot are OK.
Hi
Hi All,
Just posted my latest article. This is the first one that includes an embedded
video to expand the subject (one of the three I released a few weeks ago
before my latest heavy travel schedule).
I took about an hour and 20 minutes of video at the recent IEEE EMC Symposium.
The videos includ
The North American standard for rating enclosures, NEMA 250, is quite
different from IEC 60529. The NEMA ratings are based on the penetration of
dust and water under different conditions and do not specify the maximum
opening as in the IEC 60529 IP rating. UL 50 uses basically (although not
exact
In message
<768ee6ab7d56d54bb5000ec2dd113e710453a...@de01exm61.ds.mot.com>, dated
Tue, 2 Sep 2008, Leber Jody-G19980 writes:
>Does anyone know of a lab that can produce a CB Scheme Report to IEC
>60529 for IP54 rating?
Is there a US national or other standard that is similar, but not
ident
60529 testing is not usually a large part of a homologation exercise.
I'd expect to be able to persuade a CB scheme member to accept
results from any nationally accredited lab so long as the report
format and back-up paperwork was appropriate.
Contact me off line if you want recommendations fo
I don't know if you will find any North American lab with IEC 60529 in their
scope under the CB Scheme. I took a quick look at the CB Scheme web site and
the standard didn't show up under the scope for UL, CSA or Intertek.
For Europe, I only looked at VDE, TÜV Rheinleand and TÜV SÜD, and IEC 5
Does anyone know of a lab that can produce a CB Scheme Report to IEC
60529 for IP54 rating?
Best Regards,
X-Antispam: NO; Spamcatcher 4.1.11. Score 2
Jody Leber
Program Manager
jody.le...@motorola.com
http://www.motorola.com/producttesting
Motorola Product Testing Services
1700 Belle Mea
The final voting documents for the second editions of EN 55103-1 and -2
(EMC for professional audio, video and entertainment lighting control
equipment) have now been circulated to CENELEC National Committees. If
they are relevant to you, please obtain (if you can: distribution is
restricted)
In message , dated Tue, 2 Sep 2008,
emcp...@aol.com writes:
>I looked through the "previews" that IEC provides and only found
>references to harmonics and flicker (IEC61000-3-2 and IEC61000-3-3).
Depending on the power rating of the equipment, you will perhaps need to
look at IEC/EN 61000-3-
I looked through the "previews" that IEC provides and only found references to
harmonics and flicker (IEC61000-3-2 and IEC61000-3-3). There are other tests
listed, such as:
. voltage fluctuations and flicker;
. harmonics up to and including order 50;
. inter-harmonics up to the 50th harmonic;
. v
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