Re: [PSES] Question about power line harmonics testing
In message 4b64c938bf60be46b83b25988b0a7d7407c66...@sushdc8000.td.teradata.com, dated Wed, 10 Oct 2012, Knighten, Jim L jim.knigh...@teradata.com writes: 2) Comply with the absolute limits given in IEC 61000-3-2:2011, Table 1, The published document differs from the approved draft in that dated references have been introduced. The reference to IEC 61000-3-2:2011 is incorrect. I will flag this up to the SC77A Secretariat. -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk The longer it takes to make a point, the more obtuse it proves to be. 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
[PSES] Part of CE marking?
Have to check out this claim: RoHS, REACH and WEEE are not included in the CE mark regime. That's because they are not New approach directives. Corrcet? #Amund - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Part of CE marking?
Not quite answering the question, but RoHS is included in CE marking from Jan 2013, the recast directive , so called RoHS 2. John C -Original Message- From: amund [mailto:am...@westin-emission.no] Sent: 11 October 2012 12:14 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Part of CE marking? Have to check out this claim: RoHS, REACH and WEEE are not included in the CE mark regime. That's because they are not New approach directives. Corrcet? #Amund - 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://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 emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Part of CE marking?
Indeed, except RoHS2 that will be included in the NLF, thus part of CE marking and will be in force starting from Jan. 2013 replacing RoHS. Best regards, Kris Carpentier -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of amund Sent: donderdag 11 oktober 2012 13:14 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Part of CE marking? Have to check out this claim: RoHS, REACH and WEEE are not included in the CE mark regime. That's because they are not New approach directives. Corrcet? #Amund - 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://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 emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
[PSES] AAMI version of 60601-1 3rd ed - requirement for SI Units
Group, Does anyone have experience with the AAMI version of 60601-1, 3rd edition and clause 7.4.3? This clause requires that measurement parameters be in SI units. I'm working on a therapeutic exercise device which requires patients to enter weight as a step in the setup process. American patients will be befuddled if required to enter kg. Anyone aware of a loophole? I'm working with the EN edition. Thanks, Carl - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] AAMI version of 60601-1 3rd ed - requirement for SI Units
In message canckvwje-kae8vnbgtf3ddgi-y8xfma-ubwnqtzxa9e0pyv...@mail.gmail.com, dated Thu, 11 Oct 2012, Carl Newton emcl...@gmail.com writes: American patients will be befuddled if required to enter kg. So would many British patients! -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk The longer it takes to make a point, the more obtuse it proves to be. 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
[PSES] HAR cable designation question
Hello from overcast Northern California. I recently purchased a copy of HD 361 to decode HAR cable designations. An example is: H05GG-F H = harmonized cable 05 = 300/500 V G = ethylene vinyl acetate conductor insulation G = ethylene vinyl acetate jacket F = flexible conductors (Class 5) My interpretation of the two G characters is based on reading catalogs that indicate an inside to outside approach to designating the cable materials. Does the same inside to outside approach also apply to the voltage rating, as I expect that it does? 300 V insulation on the individual conductors and 500 V on the jacket? Regards, Peter L. Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
[PSES] Shielding materials
HI Folks, I'm looking for a source of either very fine braid, or even foil that I can use to make up a set of shielded cables. The typical braid has much too poor optical coverage. I'm envisaging most likely using 2 layers. cabels are less than 1/2 diameter. Suggestions appreciated. Cheers, Derek Walton L F Research - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] HAR cable designation question
Hi Peter, Regarding the voltage ratings, according to a handwritten note I made on a printout from Oflex on my cube wall, the first number refers to the conductor to ground voltage rating and the second number refers to the conductor to conductor voltage rating for multiconductor cable. I don't remember where I got this from, but it seems to make sense since there are 2 layers of insulation between conductors. Scott Aldous Compliance Engineer AE Solar Energy +1.970.492.2065 Direct +1.970.407.5872 Fax +1.541.312.3832 Main scott.ald...@aei.com 1625 Sharp Point Drive Fort Collins, CO 80525 www.advanced-energy.com/solarenergy -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Peter Tarver Sent: Thursday, October 11, 2012 9:26 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: HAR cable designation question Hello from overcast Northern California. I recently purchased a copy of HD 361 to decode HAR cable designations. An example is: H05GG-F H = harmonized cable 05 = 300/500 V G = ethylene vinyl acetate conductor insulation G = ethylene vinyl acetate jacket F = flexible conductors (Class 5) My interpretation of the two G characters is based on reading catalogs that indicate an inside to outside approach to designating the cable materials. Does the same inside to outside approach also apply to the voltage rating, as I expect that it does? 300 V insulation on the individual conductors and 500 V on the jacket? Regards, Peter L. Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com This message, including any attachments, may contain information that is confidential and proprietary information of Advanced Energy Industries, Inc. The dissemination, distribution, use or copying of this message or any of its attachments is strictly prohibited without the express written consent of Advanced Energy Industries, Inc. - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] HAR cable designation question
I did find a reference to this, though not from an official source: http://www.muellergroup.net/faq.html#10 Scott Aldous Compliance Engineer AE Solar Energy +1.970.492.2065 Direct +1.970.407.5872 Fax +1.541.312.3832 Main scott.ald...@aei.com 1625 Sharp Point Drive Fort Collins, CO 80525 www.advanced-energy.com/solarenergy -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Aldous, Scott Sent: Thursday, October 11, 2012 9:33 AM To: Peter Tarver; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: HAR cable designation question Hi Peter, Regarding the voltage ratings, according to a handwritten note I made on a printout from Oflex on my cube wall, the first number refers to the conductor to ground voltage rating and the second number refers to the conductor to conductor voltage rating for multiconductor cable. I don't remember where I got this from, but it seems to make sense since there are 2 layers of insulation between conductors. Scott Aldous Compliance Engineer AE Solar Energy +1.970.492.2065 Direct +1.970.407.5872 Fax +1.541.312.3832 Main scott.ald...@aei.com 1625 Sharp Point Drive Fort Collins, CO 80525 www.advanced-energy.com/solarenergy -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Peter Tarver Sent: Thursday, October 11, 2012 9:26 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: HAR cable designation question Hello from overcast Northern California. I recently purchased a copy of HD 361 to decode HAR cable designations. An example is: H05GG-F H = harmonized cable 05 = 300/500 V G = ethylene vinyl acetate conductor insulation G = ethylene vinyl acetate jacket F = flexible conductors (Class 5) My interpretation of the two G characters is based on reading catalogs that indicate an inside to outside approach to designating the cable materials. Does the same inside to outside approach also apply to the voltage rating, as I expect that it does? 300 V insulation on the individual conductors and 500 V on the jacket? Regards, Peter L. Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com This message, including any attachments, may contain information that is confidential and proprietary information of Advanced Energy Industries, Inc. The dissemination, distribution, use or copying of this message or any of its attachments is strictly prohibited without the express written consent of Advanced Energy Industries, Inc. - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com This message, including any attachments, may contain information that is confidential and proprietary information of Advanced Energy Industries, Inc. The dissemination, distribution, use or copying of this message or any of its attachments is strictly prohibited without the express written consent of Advanced Energy Industries, Inc. - This message
Re: [PSES] HAR cable designation question
Scott is correct that the first number is the conductor to ground rating and the second is the conductor to conductor rating. Here is the information on the voltage rating from Lapp Group. http://content.lappgroup.com/fileadmin/DAM/Lapp_USA/Technical_Documentation/Cables/Cable_Voltage_Designations.pdf There is some more information on Harmonized coding system at this link, but it doesn't cover the G insulation. http://content.lappgroup.com/fileadmin/DAM/Lapp_USA/Technical_Documentation/Cables/Cables_HAR_Conforms_CE.pdf Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com The opinions expressed are my own and do not necessarily reflect those of my employer. -Original Message- From: Aldous, Scott [mailto:scott.ald...@aei.com] Sent: Thursday, October 11, 2012 8:41 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: HAR cable designation question I did find a reference to this, though not from an official source: http://www.muellergroup.net/faq.html#10 Scott Aldous Compliance Engineer AE Solar Energy +1.970.492.2065 Direct +1.970.407.5872 Fax +1.541.312.3832 Main scott.ald...@aei.com 1625 Sharp Point Drive Fort Collins, CO 80525 www.advanced-energy.com/solarenergy -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Aldous, Scott Sent: Thursday, October 11, 2012 9:33 AM To: Peter Tarver; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: HAR cable designation question Hi Peter, Regarding the voltage ratings, according to a handwritten note I made on a printout from Oflex on my cube wall, the first number refers to the conductor to ground voltage rating and the second number refers to the conductor to conductor voltage rating for multiconductor cable. I don't remember where I got this from, but it seems to make sense since there are 2 layers of insulation between conductors. Scott Aldous Compliance Engineer AE Solar Energy +1.970.492.2065 Direct +1.970.407.5872 Fax +1.541.312.3832 Main scott.ald...@aei.com 1625 Sharp Point Drive Fort Collins, CO 80525 www.advanced-energy.com/solarenergy -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Peter Tarver Sent: Thursday, October 11, 2012 9:26 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: HAR cable designation question Hello from overcast Northern California. I recently purchased a copy of HD 361 to decode HAR cable designations. An example is: H05GG-F H = harmonized cable 05 = 300/500 V G = ethylene vinyl acetate conductor insulation G = ethylene vinyl acetate jacket F = flexible conductors (Class 5) My interpretation of the two G characters is based on reading catalogs that indicate an inside to outside approach to designating the cable materials. Does the same inside to outside approach also apply to the voltage rating, as I expect that it does? 300 V insulation on the individual conductors and 500 V on the jacket? Regards, Peter L. Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com This message, including any attachments, may contain information that is confidential and proprietary information of Advanced Energy Industries, Inc. The dissemination, distribution, use or copying of this message or any of its attachments is strictly prohibited without the express written consent of Advanced Energy Industries, Inc. - 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
Re: [PSES] HAR cable designation question
Thank you, Aldous. That's almost logical. That type of information really ought to be in HD 361, but it isn't. There is a Table 4 in HD 361 that shows how to read cable designations and confirms the inside to outside arrangement of the cable properties, but nothing on reading the voltage. Regards, Peter Tarver -Original Message- From: Aldous, Scott I did find a reference to this, though not from an official source: http://www.muellergroup.net/faq.html#10 This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] HAR cable designation question
In message 28d487da62d23a9968517e8f0003d...@mail.gmail.com, dated Thu, 11 Oct 2012, Peter Tarver ptar...@enphaseenergy.com writes: Does the same inside to outside approach also apply to the voltage rating, as I expect that it does? Isn't that specified in HD 361? -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk The longer it takes to make a point, the more obtuse it proves to be. 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Shielding materials
In message 8cf75dc01b80d7b-14cc-23...@webmail-stg-d14.sysops.aol.com, dated Thu, 11 Oct 2012, Derek Walton lfresea...@aol.com writes: I'm looking for a source of either very fine braid, or even foil that I can use to make up a set of shielded cables. The typical braid has much too poor optical coverage. Don't stretch it so much. Or, if it's already stretched, compress it. Of course, it will then accommodate a thicker wire. -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk The longer it takes to make a point, the more obtuse it proves to be. 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] What's the deal with Wire Nuts?
I know I'm wading into a sea of troubles by commenting, but here is my opinion. (And yes, it is just an opinion.) Twist-on wire connectors have become ubiquitous in North America. (I believe that Wire Nut is a registered trademark of one of the suppliers.) They end up in everybody's toolbox and they are seen as an easy way to splice wires together. The problem is that they are so easy to use that they are often misused. UL 486C covers these types of connectors and UL Recognized connectors can be reliable and durable if used correctly. However, that means reading the instructions and following the local electrical code. There are many easy ways to misuse the products. * Using the wrong connector for the size wires you have. * Stuffing too many wires into one connector. * Tightly twisting the wires before applying the connectors. (Many types specify that the only twisting of the stripped wire ends is done by the application of the connector itself. The wire ends are placed into the connector running parallel and not pre-twisted.) * Overstuffing a junction box placing excessive external force on the connectors. * Overstuffing a junction box resulting in temperatures above the rating of the connector. * Using the connector in environments above their rated temperature. * Using the connectors where subject to excessive vibration. * Using connectors designed only for solid conductors on stranded conductors. Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com The opinions expressed are my own and do not necessarily reflect those of my employer. -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Wednesday, October 10, 2012 11:34 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: What's the deal with Wire Nuts? In message 945417426-1349830649-cardhu_decombobulator_blackberry.rim.net-548732016- @b13.c21.bise6.blackberry, dated Wed, 10 Oct 2012, doug...@gmail.com writes: And I really dislike the 100% non-metallic types. The original British product was called 'Scruit' and was ceramic. Extremely strong, too. Would resist a hammer. -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk The longer it takes to make a point, the more obtuse it proves to be. 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://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 emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] AAMI version of 60601-1 3rd ed - requirement for SI Units
Carl, What if it is addressed in your RMF? Considering it is ANSI/AAMI instead of IEC/EN, and the intended market, I would think this would be an area you could use the RMF and address it that way. If needed you could possible address this using Clause 4.5 (although, this might be a bit of a stretch here.) I would also check with your NB or safety lab that you use and see what they have to say. Regards, Josh Joshua Wiseman Taylor Company A division of Carrier Commercial Refrigeration, Inc From: Carl Newton [mailto:emcl...@gmail.com] Sent: Thursday, October 11, 2012 8:56 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] AAMI version of 60601-1 3rd ed - requirement for SI Units Group, Does anyone have experience with the AAMI version of 60601-1, 3rd edition and clause 7.4.3? This clause requires that measurement parameters be in SI units. I'm working on a therapeutic exercise device which requires patients to enter weight as a step in the setup process. American patients will be befuddled if required to enter kg. Anyone aware of a loophole? I'm working with the EN edition. Thanks, Carl - 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://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 emcp...@radiusnorth.netmailto:emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Light curtains
Derek, You might check EN 61508 and whatever ISO standard is referenced for Risk Assessment. My guess is it will depend on the risk and the severity of that risk that you are trying to avoid. Regards, Josh Joshua Wiseman Taylor Company A division of Carrier Commercial Refrigeration, Inc From: Derek Walton [mailto:lfresea...@aol.com] Sent: Tuesday, October 09, 2012 5:55 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Light curtains Hi All, I'm faced with helping a friend work through an OSHA finding that requires the fitting of light curtains on several machines in a metal fab shop. Several of these machines were never designed to have light curtains, but OSHA wants them. So... Can anyone point me to resources specifically regarding what the machine should do if the light curtain is activated by a hand etc. Is terminating power to anything making movement happen sufficient? I hope this is not off the list topic list. Thanks, Derek Walton L F Research. - 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://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 emcp...@radiusnorth.netmailto:emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] What's the deal with Wire Nuts?
Ferrules might present an equally interesting topic for discussion. Kaz Gawrzyjal -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ted Eckert Sent: Thursday, October 11, 2012 11:07 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: What's the deal with Wire Nuts? I know I'm wading into a sea of troubles by commenting, but here is my opinion. (And yes, it is just an opinion.) Twist-on wire connectors have become ubiquitous in North America. (I believe that Wire Nut is a registered trademark of one of the suppliers.) They end up in everybody's toolbox and they are seen as an easy way to splice wires together. The problem is that they are so easy to use that they are often misused. UL 486C covers these types of connectors and UL Recognized connectors can be reliable and durable if used correctly. However, that means reading the instructions and following the local electrical code. There are many easy ways to misuse the products. * Using the wrong connector for the size wires you have. * Stuffing too many wires into one connector. * Tightly twisting the wires before applying the connectors. (Many types specify that the only twisting of the stripped wire ends is done by the application of the connector itself. The wire ends are placed into the connector running parallel and not pre-twisted.) * Overstuffing a junction box placing excessive external force on the connectors. * Overstuffing a junction box resulting in temperatures above the rating of the connector. * Using the connector in environments above their rated temperature. * Using the connectors where subject to excessive vibration. * Using connectors designed only for solid conductors on stranded conductors. Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com The opinions expressed are my own and do not necessarily reflect those of my employer. -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Wednesday, October 10, 2012 11:34 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: What's the deal with Wire Nuts? In message 945417426-1349830649-cardhu_decombobulator_blackberry.rim.net-548732016- @b13.c21.bise6.blackberry, dated Wed, 10 Oct 2012, doug...@gmail.com writes: And I really dislike the 100% non-metallic types. The original British product was called 'Scruit' and was ceramic. Extremely strong, too. Would resist a hammer. -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk The longer it takes to make a point, the more obtuse it proves to be. 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://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 emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net 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:
Re: [PSES] Shielding materials
You might try Tech Flex. http://www.techflex.com/land_metal.asp Chuck McDowell Meyer Sound Laboratories Inc. From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Derek Walton Sent: Thursday, October 11, 2012 8:27 AM To: emc-p...@ieee.org Subject: Shielding materials HI Folks, I'm looking for a source of either very fine braid, or even foil that I can use to make up a set of shielded cables. The typical braid has much too poor optical coverage. I'm envisaging most likely using 2 layers. cabels are less than 1/2 diameter. Suggestions appreciated. Cheers, Derek Walton L F Research - 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://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 emcp...@radiusnorth.netmailto:emcp...@radiusnorth.net 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 NOTICE: This email may contain confidential information. Please see http://www.meyersound.com/confidential/ for our complete policy. - 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] AAMI version of 60601-1 3rd ed - requirement for SI Units
The data must be able to be displayed in SI units but it does not prohibit the equipment to display other units of measure. At least that is my understanding of this requirement. Regards, Nick Momcilovic From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Carl Newton Sent: Thursday, October 11, 2012 8:56 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: AAMI version of 60601-1 3rd ed - requirement for SI Units Group, Does anyone have experience with the AAMI version of 60601-1, 3rd edition and clause 7.4.3? This clause requires that measurement parameters be in SI units. I'm working on a therapeutic exercise device which requires patients to enter weight as a step in the setup process. American patients will be befuddled if required to enter kg. Anyone aware of a loophole? I'm working with the EN edition. Thanks, Carl - 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://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 emcp...@radiusnorth.netmailto:emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Shielding materials
Here¹s a lightweight approach. Haven¹t looked at how fine the braid wire is, but maybe this will work for you. http://www.araconfiber.com/WhyARACON.html Ken Javor Phone: (256) 650-5261 From: Derek Walton lfresea...@aol.com Date: Thu, 11 Oct 2012 11:27:06 -0400 (EDT) To: emc-p...@ieee.org Subject: Shielding materials HI Folks, I'm looking for a source of either very fine braid, or even foil that I can use to make up a set of shielded cables. The typical braid has much too poor optical coverage. I'm envisaging most likely using 2 layers. cabels are less than 1/2 diameter. Suggestions appreciated. Cheers, Derek Walton L F Research - 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://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 emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Light curtains
You could also take a look at EN 1088:1995+A2:2008 Safety of machinery - Interlocking devices associated with guards - Principles for design and selection (Harmonised) and EN1050 - the basic machinery risk assessment standard (not a lot of use, but it might help) This might also help: http://www.machinebuilding.net/ta/t0178.htm (1st to come up in a Yahoo search on EN1088) BTW most modern Machinery Directive Harmonised Stds include a relevant risk assessment matrix with the important points listed. John Allen Compliance With Experience Ltd. W. London, UK From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Wiseman, Joshua E Sent: 11 October 2012 17:15 To: Derek Walton; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Light curtains Derek, You might check EN 61508 and whatever ISO standard is referenced for Risk Assessment. My guess is it will depend on the risk and the severity of that risk that you are trying to avoid. Regards, Josh Joshua Wiseman Taylor Company A division of Carrier Commercial Refrigeration, Inc From: Derek Walton [mailto:lfresea...@aol.com] Sent: Tuesday, October 09, 2012 5:55 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Light curtains Hi All, I'm faced with helping a friend work through an OSHA finding that requires the fitting of light curtains on several machines in a metal fab shop. Several of these machines were never designed to have light curtains, but OSHA wants them. So... Can anyone point me to resources specifically regarding what the machine should do if the light curtain is activated by a hand etc. Is terminating power to anything making movement happen sufficient? I hope this is not off the list topic list. Thanks, Derek Walton L F Research. - 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://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 emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net 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://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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] What's the deal with Wire Nuts?
Ted, If the rewiring or wire splicing is done on a product wouldn't this simply be a foreseeable misuse of the product? Product modifications are usually stated as a no-no in the user manual and there are many other methods to misuse a product including the use of wire nuts, ferrules, rewireable plugs and connectors. Or are your referring to building wiring? Curt Curtis Bender | curtis.ben...@tennantco.com my opinion does not reflect the views of my employeer -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of kazimier_gawrzy...@dell.com Sent: Thursday, October 11, 2012 12:16 PM To: ted.eck...@microsoft.com; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: What's the deal with Wire Nuts? Ferrules might present an equally interesting topic for discussion. Kaz Gawrzyjal -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ted Eckert Sent: Thursday, October 11, 2012 11:07 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: What's the deal with Wire Nuts? I know I'm wading into a sea of troubles by commenting, but here is my opinion. (And yes, it is just an opinion.) Twist-on wire connectors have become ubiquitous in North America. (I believe that Wire Nut is a registered trademark of one of the suppliers.) They end up in everybody's toolbox and they are seen as an easy way to splice wires together. The problem is that they are so easy to use that they are often misused. UL 486C covers these types of connectors and UL Recognized connectors can be reliable and durable if used correctly. However, that means reading the instructions and following the local electrical code. There are many easy ways to misuse the products. * Using the wrong connector for the size wires you have. * Stuffing too many wires into one connector. * Tightly twisting the wires before applying the connectors. (Many types specify that the only twisting of the stripped wire ends is done by the application of the connector itself. The wire ends are placed into the connector running parallel and not pre-twisted.) * Overstuffing a junction box placing excessive external force on the connectors. * Overstuffing a junction box resulting in temperatures above the rating of the connector. * Using the connector in environments above their rated temperature. * Using the connectors where subject to excessive vibration. * Using connectors designed only for solid conductors on stranded conductors. Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com The opinions expressed are my own and do not necessarily reflect those of my employer. -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Wednesday, October 10, 2012 11:34 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: What's the deal with Wire Nuts? In message 945417426-1349830649-cardhu_decombobulator_blackberry.rim.net-548732016- @b13.c21.bise6.blackberry, dated Wed, 10 Oct 2012, doug...@gmail.com writes: And I really dislike the 100% non-metallic types. The original British product was called 'Scruit' and was ceramic. Extremely strong, too. Would resist a hammer. -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk The longer it takes to make a point, the more obtuse it proves to be. 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://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 emcp...@radiusnorth.net 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://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help,
Re: [PSES] What's the deal with Wire Nuts?
I've worked with plenty of products where wire nuts were the intended connection method. I've purchased fluorescent light fixtures that include wire nuts in the package for the installer to use. The wire nuts are not necessarily used for product modifications; they can be for their intended purpose. I've worked on some larger types of equipment where wire nuts were used. In those cases, they were in the proper electrical enclosure or junction box within the equipment. Interchange of options could be done by wiring with the wire nuts. I don't see this as an issue as long as the wire nuts are used within their limitations and in the proper environment. I am not aware of field failures on these products related to the wire nuts. There are plenty of foreseeable misuses for wire nuts, but all the manufacturer can do is describe the acceptable uses and warn the purchaser against misuse. Redesigning wire nuts to prevent misuse would make them far too expensive to be practical and could lead to more problems. I've seen plenty of wires twisted together and covered in electrical tape because somebody couldn't find a wire nut (or was too lazy to use one.) I'm sure that with plenty of searching you can find photographs and stories of failed wire nuts, but I would venture to guess that successful applications outnumber failed wire nuts by a huge number. Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com The opinions expressed are my own and do not necessarily reflect those of my employer. -Original Message- From: Bender, Curtis [mailto:curtis.ben...@tennantco.com] Sent: Thursday, October 11, 2012 2:05 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: What's the deal with Wire Nuts? Ted, If the rewiring or wire splicing is done on a product wouldn't this simply be a foreseeable misuse of the product? Product modifications are usually stated as a no-no in the user manual and there are many other methods to misuse a product including the use of wire nuts, ferrules, rewireable plugs and connectors. Or are your referring to building wiring? Curt Curtis Bender | curtis.ben...@tennantco.com my opinion does not reflect the views of my employeer -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of kazimier_gawrzy...@dell.com Sent: Thursday, October 11, 2012 12:16 PM To: ted.eck...@microsoft.com; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: What's the deal with Wire Nuts? Ferrules might present an equally interesting topic for discussion. Kaz Gawrzyjal -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ted Eckert Sent: Thursday, October 11, 2012 11:07 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: What's the deal with Wire Nuts? I know I'm wading into a sea of troubles by commenting, but here is my opinion. (And yes, it is just an opinion.) Twist-on wire connectors have become ubiquitous in North America. (I believe that Wire Nut is a registered trademark of one of the suppliers.) They end up in everybody's toolbox and they are seen as an easy way to splice wires together. The problem is that they are so easy to use that they are often misused. UL 486C covers these types of connectors and UL Recognized connectors can be reliable and durable if used correctly. However, that means reading the instructions and following the local electrical code. There are many easy ways to misuse the products. * Using the wrong connector for the size wires you have. * Stuffing too many wires into one connector. * Tightly twisting the wires before applying the connectors. (Many types specify that the only twisting of the stripped wire ends is done by the application of the connector itself. The wire ends are placed into the connector running parallel and not pre-twisted.) * Overstuffing a junction box placing excessive external force on the connectors. * Overstuffing a junction box resulting in temperatures above the rating of the connector. * Using the connector in environments above their rated temperature. * Using the connectors where subject to excessive vibration. * Using connectors designed only for solid conductors on stranded conductors. Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com The opinions expressed are my own and do not necessarily reflect those of my employer. -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Wednesday, October 10, 2012 11:34 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: What's the deal with Wire Nuts? In message 945417426-1349830649-cardhu_decombobulator_blackberry.rim.net-548732016- @b13.c21.bise6.blackberry, dated Wed, 10 Oct 2012, doug...@gmail.com writes: And I really dislike the 100% non-metallic types. The original British product was called 'Scruit' and was ceramic. Extremely strong, too. Would resist a hammer. -- OOO
