I have a recollection that at one point VDE required the choke in the ground
line of the LISN. Vaguely remembered it had to do with extremely long build
grounds as in high rise buildings etc, or the possibility of no ground wire.
I seem to remember some connection with shielded power cables as well.
Anyone else have any recollection of this?
Gary McInturff
-----Original Message-----
From: rehel...@mmm.com [SMTP:rehel...@mmm.com]
Sent: Friday, December 04, 1998 9:26 AM
To: Muriel Bittencourt de Liz
Cc: emc-p...@majordomo.ieee.org
Subject: Re: Doubt on LISN utilization
It is possible to get noise induced on all cabling at the same time.
In
this case it will be also be present on the ground lead. To reduce
this
noise "ground chokes" are used. It is also extra attenuation for
common
mode currents.
Bob Heller
Senior EMC Engineer
3M Company
=============================================================
(Embedded
image moved Muriel Bittencourt de Liz <mur...@inep.ufsc.br>
to file: 12/03/98 10:59 AM
pic11332.pcx)
Please respond to Muriel Bittencourt de Liz <mur...@inep.ufsc.br>
To: Lista de EMC da IEEE <emc-p...@ieee.org>
cc: (bcc: Robert E. Heller/US-Corporate/3M/US)
Subject: Doubt on LISN utilization
Hello All,
I have a LISN from EMCO and it has a "Ground Choke". What's the goal
of
this Ground Choke? Is it really needed in the conducted
measurements?
Could somebody make this clear to me?
Thanks in advance
Muriel
--
==================================================
Muriel Bittencourt de Liz
INEP - Instituto de Eletronica de Potencia
Universidade Federal de Santa Catarina
Caixa Postal - 5119
88.040-970 - Florianopolis - SC - BRASIL
Phone: +55.48.331.9204 - Fax: +55.48.234.5422
e-mail: mur...@inep.ufsc.br
Homepage: http://www.inep.ufsc.br
==================================================
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