Ian, The HCP also has a standard required 870 kohm resistance in I would connect to a more representative earth reference. Wouldn’t the additional ground reference lead length be more representative of the field wiring anyway?
From: Derek Walton [mailto:[email protected]] Sent: Wednesday, August 24, 2011 5:25 AM To: [email protected] Subject: Re: [PSES] EN61000-4-2 questions Hi Ian, I would argue that the only purpose of the HCP is for injecting noise into your EUT. I would consider it an error to hook any grounds to this. I await correction :-) Sincerely, Derek Walton, L F Research. -----Original Message----- From: Ian White (UK) <[email protected]> To: IEEE Forum ([email protected]) <[email protected]> Sent: Wed, Aug 24, 2011 4:30 am Subject: EN61000-4-2 questions Forum members, We are testing a product which is made of metal and due to the size of it l have a table top test set up very similar to that shown in Figure 4 of the standard EN61000-4-2:2009. The unit is sitting on insulation 0.5mm thick on the horizontal coupling reference plane. In service this product sits in a steam line and has hardwired earths connected to earth for functional reasons, I have connected these earths to the horizontal coupling plane, is this correct ? The standard does not appear to give any guidance on this matter, but it seems the only logical solution. Thanks for your help. Ian White (Compliance and Reliability) - ---------------------------------------------------------------- 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 <[email protected] <mailto:[email protected]> > All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/> Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ <http://www.ieee-pses.org/> Instructions: http://listserv.ieee.org/request/user-guide.html <http://listserv.ieee.org/request/user-guide.html> List rules: http://www.ieee-pses.org/listrules.html <http://www.ieee-pses.org/listrules.html> For help, send mail to the list administrators: Scott Douglas <[email protected] <mailto:[email protected]> > Mike Cantwell <[email protected] <mailto:[email protected]> > For policy questions, send mail to: Jim Bacher <[email protected] <mailto:[email protected]> > David Heald <[email protected] <mailto:[email protected]> > - ---------------------------------------------------------------- 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 <[email protected] <mailto:[email protected]> > All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/> Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ <http://www.ieee-pses.org/> Instructions: http://listserv.ieee.org/request/user-guide.html <http://listserv.ieee.org/request/user-guide.html> List rules: http://www.ieee-pses.org/listrules.html <http://www.ieee-pses.org/listrules.html> For help, send mail to the list administrators: Scott Douglas <[email protected] <mailto:[email protected]> > Mike Cantwell <[email protected] <mailto:[email protected]> > For policy questions, send mail to: Jim Bacher <[email protected] <mailto:[email protected]> > David Heald <[email protected] <mailto:[email protected]> > - ---------------------------------------------------------------- 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 <[email protected]> All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]>
