RE: earth bonding stud
Chris: The US mil practice for this stack would not use a crinkle washer at the bottom of the stack. The top crinkle washer (mil would prefer a split ring lockwasher) should be enough to provide the axial compression loading on the stack. The baseplate-to-solder terminal interface should be smooth, clean and conductive, hence no crinkle washer needed to cut into the surfaces. Also, the crinkle points are relative small points of contact, so a heavy fault current might melt the tiny points. Regards, Ed :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-) Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military Avionics EMC Services Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-) -Original Message- From: James, Chris [mailto:c...@dolby.co.uk] Sent: Monday, October 09, 2000 5:15 AM To: 'Colgan, Chris'; 'Emc-Pstc' (E-mail) Subject: RE: earth bonding stud Chris, Sounds good. We use solder terminals with integral star. Make sure the wire to the solder terminal is hooked thru and wrapped round the lug before soldering i.e. so that it is mechanically secured as well as soldered. Chris -Original Message- From: Colgan, Chris [mailto:chris.col...@tagmclarenaudio.com] Sent: 09 October, 2000 10:42 AM To: 'Emc-Pstc' (E-mail) Subject: earth bonding stud Hello group Having only ever dealt with Class II double insulated products, we are going to produce a Class I earthed product. We have an M4 stud in the baseplate and I have to spec the method of connecting the stud to the IEC mains inlet to provide chassis bonding to earth. I was going to suggest the following stack of parts: M4 crinkle washer, M4 solder terminal, M4 crinkle washer, M4 Nyloc nut. Does anyone think that this might prove unsuitable? Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd The Summit, Latham Road Huntingdon, Cambs, PE29 6ZU United Kingdom * Phone: +44 (0)1480 415627 * Fax: +44 (0)1480 415689 * Mailto:chris.col...@tagmclarenaudio.com * http://www.tagmclarenaudio.com ** Please visit us at www.tagmclarenaudio.com ** The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd The Summit, 11 Latham Road Huntingdon, Cambs, PE29 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) ** Please visit us at www.tagmclarenaudio.com ** --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: earth bonding stud
Chris, I would prefer a simpler solution (only two parts): solder lock ring terminal (with a built-in star washer) + nut. John Radomski Colgan, Chris Chris.Colgan@TAGMcLarenTo: emc-p...@majordomo.ieee.org Audio.com cc: Sent by:Subject: earth bonding stud owner-emc-p...@ieee.org 10/09/00 05:41 AM Please respond to Colgan, Chris Hello group Having only ever dealt with Class II double insulated products, we are going to produce a Class I earthed product. We have an M4 stud in the baseplate and I have to spec the method of connecting the stud to the IEC mains inlet to provide chassis bonding to earth. I was going to suggest the following stack of parts: M4 crinkle washer, M4 solder terminal, M4 crinkle washer, M4 Nyloc nut. Does anyone think that this might prove unsuitable? Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd The Summit, Latham Road Huntingdon, Cambs, PE29 6ZU United Kingdom * Phone: +44 (0)1480 415627 * Fax: +44 (0)1480 415689 * Mailto:chris.col...@tagmclarenaudio.com * http://www.tagmclarenaudio.com ** Please visit us at www.tagmclarenaudio.com ** The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd The Summit, 11 Latham Road Huntingdon, Cambs, PE29 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) ** Please visit us at www.tagmclarenaudio.com ** --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: earth bonding stud
I'm going back at least a dozen years to when I last had to deal with this. At the time the requirement was that the earth wire could not be removed without the use of a tool. I found that the tag gave me enough torque with my thumb to loosen the nut sufficiently to enable the (nyloc) nut to be undone with my fingers. We cured the problem by placing the stud close to a side frame member so that it prevented rotating the tag. -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-496000 Colgan, Chris wrote: Hello group Having only ever dealt with Class II double insulated products, we are going to produce a Class I earthed product. We have an M4 stud in the baseplate and I have to spec the method of connecting the stud to the IEC mains inlet to provide chassis bonding to earth. I was going to suggest the following stack of parts: M4 crinkle washer, M4 solder terminal, M4 crinkle washer, M4 Nyloc nut. Does anyone think that this might prove unsuitable? Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd The Summit, Latham Road Huntingdon, Cambs, PE29 6ZU United Kingdom * Phone: +44 (0)1480 415627 * Fax: +44 (0)1480 415689 * Mailto:chris.col...@tagmclarenaudio.com * http://www.tagmclarenaudio.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: earth bonding stud
Chris, Sounds good. We use solder terminals with integral star. Make sure the wire to the solder terminal is hooked thru and wrapped round the lug before soldering i.e. so that it is mechanically secured as well as soldered. Chris -Original Message- From: Colgan, Chris [mailto:chris.col...@tagmclarenaudio.com] Sent: 09 October, 2000 10:42 AM To: 'Emc-Pstc' (E-mail) Subject: earth bonding stud Hello group Having only ever dealt with Class II double insulated products, we are going to produce a Class I earthed product. We have an M4 stud in the baseplate and I have to spec the method of connecting the stud to the IEC mains inlet to provide chassis bonding to earth. I was going to suggest the following stack of parts: M4 crinkle washer, M4 solder terminal, M4 crinkle washer, M4 Nyloc nut. Does anyone think that this might prove unsuitable? Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd The Summit, Latham Road Huntingdon, Cambs, PE29 6ZU United Kingdom * Phone: +44 (0)1480 415627 * Fax: +44 (0)1480 415689 * Mailto:chris.col...@tagmclarenaudio.com * http://www.tagmclarenaudio.com ** Please visit us at www.tagmclarenaudio.com ** The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd The Summit, 11 Latham Road Huntingdon, Cambs, PE29 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) ** Please visit us at www.tagmclarenaudio.com ** --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
