A while back, I gave a short presentation on the conducted immunity standard.
While researching it I was unable to find any information on why the 10cm
requirement. I assumed that SOME measurement was required for repeatability.
However, at the presentation, an EMC engineer that has been in this business
far longer than I have informed me about the "average pallet" explanation. He
told me that if I go back to the original 801 series standard (pre 61000-4)
written in French, it was mentioned. Anyone have an old copy?
Bob R.
--- On Wed, 4/1/09, rehel...@mmm.com <rehel...@mmm.com> wrote:
From: rehel...@mmm.com <rehel...@mmm.com>
Subject: Fw: [PSES] 10cm above GRP requirement for 61000-4-6
To: emc-p...@ieee.org
Date: Wednesday, April 1, 2009, 6:51 AM
I was told by someone long ago that the 10 cm distance came about
because
this is the height of a standard pallet and in providing this distance
from
the ground plane allowed you to test floor standing equipment without
removing it from the pallet.
Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
=============================================================
"Gordon,Ian"
<Ian.Gordon@edwar
dsvacuum.com>
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Sent by: <rehel...@mmm.com
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cc
04/01/2009 04:22
Subject
AM RE: [PSES] 10cm above GRP
requirement for 61000-4-6
Bob et al
I agree - or to put it another way "Upon what basis did the relevant IEC
committee arrive at this value?"
Ian Gordon
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Sent: 01 April 2009 10:05
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Subject: RE: [PSES] 10cm above GRP requirement for 61000-4-6
A more significant question is: At what point does the tolerance affect
the result of the test? The answer to this question will give you the
answer to the original question.
Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
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