http://www.ieee-pses.org/symposium
http://www.emc2004.org/
I read in !emc-pstc that =?iso-8859-2?Q?Konrad_Stefa=F1ski?=
wrote (in <002d01c46bfd$50d39d00$0301a8c0@konr
ad>) about 'EMC Directive interpretation' on Sat, 17 Jul 2004:
>I would like to ask you how to obtain conformity with EMC Directive to
>the following product: Tension-converter used in tension-meters or
>weighting devices.
There is a separate Directive for weighing machines, and your product
may be within its scope.
>It is only resistive device, It consist only
>resistors which could change resistance with tension changes. These
>resistors are serially connected. It has no other electronic and
>electric parts in its construction. This converter could only work with
>other device, but it may be selled as stand alone device.
>
>So my questions:
>1. Does this device (converter) lay under scope of EMC Directive?
Yes, is the simple answer. You might be able to make a case that is
doesn't, but it would be difficult, and there would be a permanent risk
that your case would be successfully challenged.
>2. If YES, is this necessary to do tests in accordance with EMC
>harmonized standards to show conformity with directive ? I think that
>this device meets EMC Directive requirements without any tests (only
>resistive character).
You probably don't need to do any tests in order to justify the
Declaration of Conformity. But it would be helpful commercially if you
could claim, on the basis of tests, that it did not affect the EMC
characteristics of whatever it has to be connected to in order to use
it. The appropriate tests are probably radiated emissions, ESD and
radiated immunity.
>3. If NOT, is this device a EM-passive component?
'Passive' is a misleading word. Your device is passive, but it may not
be 'benign', that is, it may affect the EMC characteristics of whatever
it is connected to.
The above points probably apply to ANY device that has no active
components and is connected to something else in order to work, if it is
placed on the open market by itself.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
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