On Mon, 13 May 2019 14:36:54 -0600, Richard Georgerian <richa...@mesanetworks.net> wrote:
> In IEC 61000-4-9, Section 7.3 it states the following - > > "Table-top EUT's shall be placed on a non-conductive table." > > Up until now, I have always thought that "non-conductive" had meant no > metals, such as iron, steel, aluminum, copper, etc. In that meaning, the > table would then be made of wood, foam, etc. However, I have been advised > that for this particular case of impulse magnetic field immunity test, that > "non-conductive" is referring to material that should not be magnetic > conductive, such as aluminum or copper. Iron and steel would not be used, as > these are considered magnetic conductive. And therefore, an aluminum or > copper sheet would be placed on the table under the EUT. > > The standard does not provide guidance as to the use of "non-conductive" > that would mean in essence, "should not be magnetic conductive". > > Any guidance and insight would be most helpful. I believe "non-conductive" means electrically non-conductive. It should also non-magnetic to avoid influences to magnetic field, but most non-conductive material should also non-magnetic. In addition, in case of IEC/EN 61000-4-9:2016, I though that GRP below the table-top EUT is no longer required. So, I believe we can simply use wood or foam tables. See also IEC/EN 61000-4-8, which use both "non-conductive" and "non-magnetic" for different meanings. Regards, Tom - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
