On Tue, 16 May 2006 10:27:30 +0300,
  <ari.honk...@nokia.com> wrote:

> If you follow the latest IEC 61000-4-4 it is only common mode test, that
> is L1,L2,PE.

It is quite clear in IEC 61000-4-4:2004, as the clause 7.3.1.1
of the standard now says:

  The test voltage shall be applied ***simultaneously*** between
  a ground reference plane and all of the power supply terminals ...

and the corresponding figures also indicate that the disturbance
are to be injected to all lines at once.

However, IEC 61000-4-4:1995 clause 7.3.1 simply says:

  The test voltage shall be applied between a ground reference
  plane and each of the power supply terminals ...

and the corresponding figures suggest that the disturbance are
to be injected to each of the lines one by one.

Regards,
Tom


Tomonori Sato  <vef00...@nifty.ne.jp>
URL: http://homepage3.nifty.com/tsato/

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