Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4
In message OF24201270.2EDF97A3-ON85257E06.007BDBCE-85257E06.007D2D07@bureauveritas. com, dated Thu, 12 Mar 2015, Chris Bramley christopher.bram...@us.bureauveritas.com writes: ANSI C63.4-2014 clause 5.2.2 requires a direct current resistance of less than or equal to 2.5 milliohms between the LISN being used for CEMI measurements and the reference ground plane. It doesn't seem to me to be a very sensible requirement. For example, it matters where on the LISN and where on the ground plane the resistance is measured. Neither object is a superconductor! Is there a similarly stringent requirement for the resistance of the ground plane between the LISN and the EUT? It seems to me that if that is much higher than 2.5 mohms, the 2.5 mohms is not very important. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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
Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4
A suitable 4-port bonding meter is the VICI VC480C+ 3 1/2 Digital Resistance Tester - available on-line for about $100. Regards Charlie From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: 13 March 2015 02:58 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4 All that is necessary is a clean metal-to-metal faying surface bond. There are any number of bond meters out there. Some of the old ones are the HP4328A (which has a modern digital incarnation) and the Keithley Model 580 (which is also obsolete but has a modern replacement that likely someone else on this forum can cite). Ken Javor Phone: (256) 650-5261 From: Chris Bramley christopher.bram...@us.bureauveritas.commailto:christopher.bram...@us.bureauveritas.com Reply-To: christopher.bram...@us.bureauveritas.commailto:christopher.bram...@us.bureauveritas.com Date: Thu, 12 Mar 2015 18:47:15 -0400 To: EMC-PSTC@LISTSERV.IEEE.ORGmailto:EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4 ANSI C63.4-2014 clause 5.2.2 requires a direct current resistance of less than or equal to 2.5 milliohms between the LISN being used for CEMI measurements and the reference ground plane. Is it possible to achieve this low level of resistance by simply bolting the LISN to the ground plane(after thoroughly cleaning the LISN and ground plane contact points)? I am looking for a solution that allows the LISNs to remain reasonably portable as they are regularly transferred between test sites. Also, what combination of Kelvin probes and milliohm meter works best to take quick, repeatable measurements of the resistance between the LISN and the ground plane? Christopher Bramley EMC Test Engineer I Bureau Veritas - Consumer Products Services Littleton Distribution Center 1 Distribution Center Circle, Suite 1 Littleton, MA 01460, USA 978.486.8880 x6135 christopher.bram...@us.bureauveritas.commailto:christopher.bram...@us.bureauveritas.com This message contains confidential information. To know more, please click on the following link: http://disclaimer.bureauveritas.com; - 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.orgmailto: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) http://www.ieee-pses.org/list.htmlhttp://www.ieee-pses.org/list.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.orgmailto:sdoug...@ieee.org Mike Cantwell mcantw...@ieee.orgmailto:mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.orgmailto:j.bac...@ieee.org David Heald dhe...@gmail.commailto:dhe...@gmail.com - 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.orgmailto: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)http://www.ieee-pses.org/list.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.orgmailto:sdoug...@ieee.org Mike Cantwell mcantw...@ieee.orgmailto:mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.orgmailto:j.bac...@ieee.org David Heald dhe...@gmail.commailto:dhe...@gmail.com - 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
Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4
A ground plane made of copper, brass or aluminum of any extent (width as well as length) will have microohms of resistance and the bonding requirement of 2.5 milliohms is reasonable. It typically requires a metal-to-metal faying surface bond (or wide bond strap) commensurate with low inductance, which is the real technical requirement enforced by the simple dc requirement. Ken Javor Phone: (256) 650-5261 From: John Woodgate j...@jmwa.demon.co.uk Reply-To: John Woodgate j...@jmwa.demon.co.uk Date: Fri, 13 Mar 2015 06:20:37 + To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4 In message OF24201270.2EDF97A3-ON85257E06.007BDBCE-85257E06.007D2D07@bureauveritas. com, dated Thu, 12 Mar 2015, Chris Bramley christopher.bram...@us.bureauveritas.com writes: ANSI C63.4-2014 clause 5.2.2 requires a direct current resistance of less than or equal to 2.5 milliohms between the LISN being used for CEMI measurements and the reference ground plane. It doesn't seem to me to be a very sensible requirement. For example, it matters where on the LISN and where on the ground plane the resistance is measured. Neither object is a superconductor! Is there a similarly stringent requirement for the resistance of the ground plane between the LISN and the EUT? It seems to me that if that is much higher than 2.5 mohms, the 2.5 mohms is not very important. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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 - 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
Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4
Has anyone experimented with the bonding of their LISN and have data to show the difference between different bonding methods? 1. bolted directly to the ground plane 2. isolated from the ground plane but bonded with a - copper strap (of different widths) - copper tinned braid (of different widths) - insulated hookup wire (of different gages) Sounds like a fun experiment. I might give it a try if I can find the time. The Other Brian -Original Message- From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: Friday, March 13, 2015 10:31 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4 A ground plane made of copper, brass or aluminum of any extent (width as well as length) will have microohms of resistance and the bonding requirement of 2.5 milliohms is reasonable. It typically requires a metal-to-metal faying surface bond (or wide bond strap) commensurate with low inductance, which is the real technical requirement enforced by the simple dc requirement. Ken Javor Phone: (256) 650-5261 From: John Woodgate j...@jmwa.demon.co.uk Reply-To: John Woodgate j...@jmwa.demon.co.uk Date: Fri, 13 Mar 2015 06:20:37 + To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4 In message OF24201270.2EDF97A3-ON85257E06.007BDBCE-85257E06.007D2D07@bureauveritas. com, dated Thu, 12 Mar 2015, Chris Bramley christopher.bram...@us.bureauveritas.com writes: ANSI C63.4-2014 clause 5.2.2 requires a direct current resistance of less than or equal to 2.5 milliohms between the LISN being used for CEMI measurements and the reference ground plane. It doesn't seem to me to be a very sensible requirement. For example, it matters where on the LISN and where on the ground plane the resistance is measured. Neither object is a superconductor! Is there a similarly stringent requirement for the resistance of the ground plane between the LISN and the EUT? It seems to me that if that is much higher than 2.5 mohms, the 2.5 mohms is not very important. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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 - 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 LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - 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
Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4
In message d1285ee5.69ff8%ken.ja...@emccompliance.com, dated Fri, 13 Mar 2015, Ken Javor ken.ja...@emccompliance.com writes: A ground plane made of copper, brass or aluminum of any extent (width as well as length) will have microohms of resistance I wonder if that's always true when you take into account the contact between the EUT and the ground plane, not just the ground plane itself. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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
Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4
Chris: I most recently used Solar LISNs; these models had an approximately 1/8 thick aluminum baseplate that extended beyond the front and rear edges. I could get completely adequate bonding resistance by just using a clamp to hold the aluminum flange snugly to the copper ground plane. I would just use a Scotch-Brite pad to shine up the copper and aluminum faces prior to attaching the clamps. I would verify my bond each day during long test programs, but after establishing an initial good setup, I never saw the bond degrade. I also used some LISNs which used a single ¼-20 bolt as the ground point. I used flexible copper straps with these LISNs, with the only caveat being that I used a large washer to clamp the strap against the LISN body instead of relying solely on the threaded stud. I was also very fond of the Keithley 580 Microohmmeter; it was stable and reliable, although the spring-loaded Kelvin probes were delicate. I bought various probe tips and alligator clips to make my own custom Kelvin probes; take a look at http://www.probemaster.com/ Ed Price WB6WSN Chula Vista, CA USA 1961 Amphicar 770 2001 Fleetwood Storm 31W 2008 Ford Explorer From: Chris Bramley [mailto:christopher.bram...@us.bureauveritas.com] Sent: Thursday, March 12, 2015 3:47 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4 ANSI C63.4-2014 clause 5.2.2 requires a direct current resistance of less than or equal to 2.5 milliohms between the LISN being used for CEMI measurements and the reference ground plane. Is it possible to achieve this low level of resistance by simply bolting the LISN to the ground plane(after thoroughly cleaning the LISN and ground plane contact points)? I am looking for a solution that allows the LISNs to remain reasonably portable as they are regularly transferred between test sites. Also, what combination of Kelvin probes and milliohm meter works best to take quick, repeatable measurements of the resistance between the LISN and the ground plane? Christopher Bramley EMC Test Engineer I Bureau Veritas - Consumer Products Services Littleton Distribution Center 1 Distribution Center Circle, Suite 1 Littleton, MA 01460, USA 978.486.8880 x6135 christopher.bram...@us.bureauveritas.com This message contains confidential information. To know more, please click on the following link: http://disclaimer.bureauveritas.com; - 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) http://www.ieee-pses.org/list.html 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 - 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
Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4
At least in MIL-STD-461 and RTCA/DO-160 of which I have personal knowledge, the EUT must be bonded to the ground plane in the same manner it would in its intended installation. I assume other standards do likewise, but the point is that any sort of LISN provides a standard source impedance specifically based on a controlled bonding impedance (NTE) whereas the test sample performance depends on its specific grounding/boning configuration, which the test set-up must replicate to the maximum extent possible. Ken Javor Phone: (256) 650-5261 From: John Woodgate j...@jmwa.demon.co.uk Reply-To: John Woodgate j...@jmwa.demon.co.uk Date: Fri, 13 Mar 2015 14:47:28 + To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4 In message d1285ee5.69ff8%ken.ja...@emccompliance.com, dated Fri, 13 Mar 2015, Ken Javor ken.ja...@emccompliance.com writes: A ground plane made of copper, brass or aluminum of any extent (width as well as length) will have microohms of resistance I wonder if that's always true when you take into account the contact between the EUT and the ground plane, not just the ground plane itself. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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 - 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
Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4
All that is necessary is a clean metal-to-metal faying surface bond. There are any number of bond meters out there. Some of the old ones are the HP4328A (which has a modern digital incarnation) and the Keithley Model 580 (which is also obsolete but has a modern replacement that likely someone else on this forum can cite). Ken Javor Phone: (256) 650-5261 From: Chris Bramley christopher.bram...@us.bureauveritas.com Reply-To: christopher.bram...@us.bureauveritas.com Date: Thu, 12 Mar 2015 18:47:15 -0400 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4 ANSI C63.4-2014 clause 5.2.2 requires a direct current resistance of less than or equal to 2.5 milliohms between the LISN being used for CEMI measurements and the reference ground plane. Is it possible to achieve this low level of resistance by simply bolting the LISN to the ground plane(after thoroughly cleaning the LISN and ground plane contact points)? I am looking for a solution that allows the LISNs to remain reasonably portable as they are regularly transferred between test sites. Also, what combination of Kelvin probes and milliohm meter works best to take quick, repeatable measurements of the resistance between the LISN and the ground plane? Christopher Bramley EMC Test Engineer I Bureau Veritas - Consumer Products Services Littleton Distribution Center 1 Distribution Center Circle, Suite 1 Littleton, MA 01460, USA 978.486.8880 x6135 christopher.bram...@us.bureauveritas.com This message contains confidential information. To know more, please click on the following link: http://disclaimer.bureauveritas.com; - 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) http://www.ieee-pses.org/list.html 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 - 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
[PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI C63.4
ANSI C63.4-2014 clause 5.2.2 requires a direct current resistance of less than or equal to 2.5 milliohms between the LISN being used for CEMI measurements and the reference ground plane. Is it possible to achieve this low level of resistance by simply bolting the LISN to the ground plane (after thoroughly cleaning the LISN and ground plane contact points)? I am looking for a solution that allows the LISNs to remain reasonably portable as they are regularly transferred between test sites. Also, what combination of Kelvin probes and milliohm meter works best to take quick, repeatable measurements of the resistance between the LISN and the ground plane? Christopher Bramley EMC Test Engineer I Bureau Veritas - Consumer Products Services Littleton Distribution Center 1 Distribution Center Circle, Suite 1 Littleton, MA 01460, USA 978.486.8880 x6135 christopher.bram...@us.bureauveritas.com This message contains confidential information. To know more, please click on the following link: http://disclaimer.bureauveritas.com; - 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
