All,
I commented on this before, in essence saying that a new standards committee
must be able to create a the standard they are charged-with and believe they are
free to create requirements appropriate for the product familiy and that can
differ as needed from other standards. Otherwise, why create new standards if
the older standards are so entrenched as to kill variation? Why form a new
committee if only to mimic the work of another?
There are other important differences (relaxations?) between EN 61326-1 and the
other new generation product family standards. I decided not to list them here
because I'd suspect that somebody out there would complain and start another
thread.
Trying to compare different product family standards is doomed to find
differences that annoys someone.
Regards,
Eric Lifsey
Compliance Manager/Engineer
National Instruments
Please respond to Barry Ma <barry...@altavista.com>
To: bkundew...@qtm.net, nprov...@foxboro.com
cc: emc-p...@ieee.org (bcc: Eric Lifsey/AUS/NIC)
Subject: RE: EN61326-1 Harmonics
Hi Brian,
Here is my $0.02.
(1) As far as EN61326-1 is concerned, Class A is not required to pass
EN61000-3-2 and EN61000-3-3. Because EN61326 committee treated these two
standards as basic standards.
(2) However, they are not basic standards. They are product standards. If your
product falls under their definition the product MUST comply with them no matter
whether EN61326 calls for them.
(3) Therefore, we found a conflict between 61326 and 61000-3-2/3 (although they
are all listed in harmonized standards). How to solve the conflict? There might
be two options.
(A) Change 61326: Class A is also required to pass EN61000-3-2 and -3.
(B) Change 61000-3-2/3: They are basic standards. (the same as 61000-4-X
series).
Best Regards,
Barry Ma
b...@anritsu.com
--------------
On Fri, 24 March 2000, "Provost,Norm" wrote:
> The exclusion of harmonic test requirements in EN 61326 for equipment which
> need only meet Class A emission limits was a deliberate decision by the
> authors. It was not an omission by error. Many outside the committee now
> view this decision as a "mistake".
>
> There is no revision in progress.
>
> Best Regards,
> Norm Provost
> > -----Original Message-----
> > From: Brian Kunde [SMTP:bkundew...@qtm.net]
> > Sent: Friday, March 24, 2000 12:16 PM
> > To: 'IEEE EMC/PS Group'
> > Subject: EMC: EN61326-1 Harmonics
> >
> > The EN 61326-1 family standard for laboratory equipment only lists Harmonic
> > testing as a requirement for Class B environments. So Class A products are
> > not required to pass the harmonics tests (flicker too).
> >
> > Is this going to continue as the rule in the future? Will this rule carry
> > over to other family and generic standards?
> >
> > I had heard that omitting harmonic testing in a class A environment was a
> > mistake and that it will be corrected on future versions of the standard.
> > Can anyone validate or invalidate this statement.
> >
> > Thanks,
> > Brian
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