In this cacophony of opinions and interpretations , didn’t see any NRTL (like UL, TUV, CSA etc) experts statements on the rational of test and compliance criteria …
> On Sep 4, 2024, at 9:38 AM, Ralph McDiarmid <rmm.priv...@gmail.com> wrote: > > Hi Amund, > > The standard I have access to, IEC 62368-1:2018 RLV © IEC 2018, has clause > 4.1.2 Use of Components. Nowhere in that clause could I find a statement > supporting what the lab thinks is needed. The noun "critical component" does > not appear anywhere in the 2018 version, but I suggest it is a synonym for > the term "safeguard" defined and used throughout IEC 62368-1. The lab really > should be using language and terminology aligned with the standard being > applied. > > In other standards that do include Abnormal Condition tests, component > temperatures are not a pass/fail criterion in that operating condition. It > appears to be so with IEC 62368, but it's not explicit and seems open to > interpretation. > > However, in Normal Condition at +55C ambient it looks like you've got an > issue with at least one component. You might need to change the upper end > of your operating temperature range. (55C is very high for outdoor > equipment.) > > Ralph > > -----Original Message----- > From: Amund Westin <am...@westin-emission.no> > Sent: September 4, 2024 2:56 AM > To: EMC-PSTC@LISTSERV.IEEE.ORG > Subject: Re: [PSES] SV: [PSES] SV: [PSES] SV: [PSES] IEC62368-1 - Abnormal > condition - Fail > > Ralph, > > “The standard also does not accept that critical components get a > temperature above what is specified in the test report for that > component»“ > > The lab refer to Clause 4.1.2. > Right now, I don't have access to the standard, so I cant check the > text. > > Best ragards Amund > > > > > On 2024-09-04 09:15, Amund Westin wrote: >> Thanks all for good comments! >> >> Ralph: >> I'm still waiting for lab feedback on this one :“ The standard also >> does not accept that critical components get a temperature above what >> is specified in the test report for that component». “ >> I have a feeling they will reply : Annex G.5.3.3.2, even though it is >> not a transformer, but a DC/DC module. >> I'll post the lab feedback when it comes in. >> >> >> John W: >> Improvement of ventilation is an option that is under discussion in the >> R&D now. Trick to do, because of current design. >> >> >> We got new information yesterday and I summarize the current situation: >> 1) Abnormal condition: DCDCmodule spec +85C, measured under to be 91C >> under abnormal condition >> 2) Normal condition: DCDCmodule spec +85C, measured to be 83C under >> normal condition (+25C ambient) >> 3) Normal condition: DCDCmodule spec +85C, measured to be 88C under >> normal condition (+55C ambient, spec final product is -40C to +55C)) >> >> >> Facts: >> DCDCmodule is CB certified (-40C to +85C) >> DCDCmodule is places inside a fire enclosure >> DCDCmodule is not accessable / touchable >> Final product with DCDCmodule have been running in the field +20 years >> without failure. >> >> >> I'll return with more information. >> >> >> Best regards Amund >> >> >> >> >> On 2024-09-03 16:52, Ralph McDiarmid wrote: >>> Perhaps Amund could ask the lab which clause in IEC 62368 supports >>> their statement, “ _The standard also does not accept that critical >>> components get a temperature above what is specified in the test >>> report for that component». “_ >>> >>> _ _ >>> >>> This is an Abnormal Condition and safeguard parameters, which include >>> rated temperature, are not subject to the same constraints imposed >>> during Normal Condition. >>> >>> _ _ >>> >>> I suggest there are two problems here. One is that the lab seems to >>> misunderstand Abnormal Condition and the other is terminology like >>> _Basic Safeguard Parameters_ and _Supplementary Safeguard Parameters_ >>> used in Figure 45 do not seem to be defined anywhere. >>> >>> _ _ >>> >>> _Ralph_ >>> >>> From: Richard Nute <ri...@ieee.org> >>> Sent: Monday, September 2, 2024 12:54 PM >>> To: rmm.priv...@gmail.com; EMC-PSTC@LISTSERV.IEEE.ORG >>> Subject: RE: [PSES] SV: [PSES] SV: [PSES] SV: [PSES] IEC62368-1 - >>> Abnormal condition - Fail >>> >>> Further to Ralph’s comments… and with thanks to Amund… >>> >>> Since the lab has its own interpretation of “abnormal” different >>> than that of 62368-2, the lab needs to make its position on >>> “abnormal” conditions known and apply to TC108 for consideration >>> of a change to 62368-2. >>> >>> Or, Amund can forward the lab’s interpretation directly to TC108, >>> although this will probably go to the interpretation panel. >>> >>> Rich >>> >>> ps: The lab’s response does make sense – sort of. It is filled >>> with “what ifs” that I have some doubt that the assertions are >>> from the lab’s experience. For example, for the exterior of the >>> module to reach 85 C, the interior has to be hotter (maybe much >>> hotter) and may exceed solid insulation rated temperature. We and the >>> lab don’t know, but at 85 C, we (us) assume the interior solid >>> insulation (and other safeguards) does not exceed its rating (which >>> must be greater than 85 C). >>> >>> Another statement that creates doubt for me is that “_also lead to >>> other dangers such as mains voltage being absorbed_.” The lab does >>> not know what the “_other dangers_” are, and leaves us up in the >>> air about what is “_mains voltage being absorbed_…” Absorbed by >>> what? >>> >>> rn >>> >>> From: Ralph McDiarmid <rmm.priv...@gmail.com> >>> Sent: Monday, September 2, 2024 9:52 AM >>> To: EMC-PSTC@LISTSERV.IEEE.ORG >>> Subject: Re: [PSES] SV: [PSES] SV: [PSES] SV: [PSES] IEC62368-1 - >>> Abnormal condition - Fail >>> >>> To add to what Charlie has mentioned, the integrity of a _safeguard_, >>> like protective separation, can be verified at the end of the Abnormal >>> with a dielectric test. A satisfactory result would indicate that the >>> _safeguard_ remains effective. The standard states that _safeguard_ >>> parameters, like rated temperature, can be exceeded during an abnormal >>> test. >>> >>> If your lab doesn’t agree with any of this, I suggest you check to >>> see if they are accredited to perform test and evaluation for IEC >>> 62368. The lab may not be able to comprehend and interpret a complex >>> standard like 62368. >>> >>> Ralph >>> >>> From: Charlie Blackham <char...@sulisconsultants.com> >>> Sent: Monday, September 2, 2024 1:28 AM >>> To: EMC-PSTC@LISTSERV.IEEE.ORG >>> Subject: Re: [PSES] SV: [PSES] SV: [PSES] SV: [PSES] IEC62368-1 - >>> Abnormal condition - Fail >>> >>> Amund >>> >>> A safety critical component rated at 85C is rated to run safely at >>> that temperature for the life of the product. >>> >>> The temperature is only exceeded under an abnormal condition, which by >>> definition is not a normal operating condition: >>> >>> 3.3.7.1 >>> >>> abnormal operating condition >>> >>> temporary operating condition that is not a normal operating condition >>> and is not a single fault condition of the equipment itself >>> >>> a component providing ES3 to ES1 isolation has double or reinforced >>> insulation, so remains safe even in a single fault condition, which >>> we’re not assessing here. >>> >>> It looks like the lab doesn’t properly understand clauses B.3 and >>> B.4 and I’ve never seen a competent lab use “bad luck” in a >>> report before 😊 >>> >>> Best regards >>> >>> Charlie >>> >>> Charlie Blackham >>> >>> Sulis Consultants Ltd >>> >>> Tel: +44 (0)7946 624317 >>> >>> Web: https://sulisconsultants.com/ [1] >>> >>> Registered in England and Wales, number 05466247 >>> >>> From: Amund Westin <am...@westin-emission.no> >>> Sent: 02 September 2024 09:02 >>> To: EMC-PSTC@LISTSERV.IEEE.ORG >>> Subject: [PSES] SV: [PSES] SV: [PSES] SV: [PSES] IEC62368-1 - Abnormal >>> condition - Fail >>> >>> Hello Rich >>> >>> The component that gets hot, is a DC/DC module, bought from a >>> well-known manufacturer and the module holds a CB certificate. >>> >>> Module Spec is +85C, when it reaches +89C, the final product itself >>> shouts down as a consequence to too high temperature. >>> >>> The lab answer as follow: >>> >>> _«What fails here is that a very critical component gets too hot. >>> What makes this component so critical is that this component is used >>> as a separation between primary to secondary circuits (So ES3 -> ES1). >>> As the module again has critical components in it (such as a >>> transformer) which are in the separator, we have no control over how >>> hot this component gets as it has only been tested up to 85oC. If the >>> component gets too hot, this can cause the separation to be broken and >>> you will then get primary voltage (ES3) into the secondary circuit >>> (which is ES1)._ >>> >>> _This can also lead to other dangers such as mains voltage being >>> absorbed in the event of bad luck or a fire. (This can also spread out >>> of the product, if other products are connected via e.g. the RS232 >>> connector). The standard also does not accept that critical components >>> get a temperature above what is specified in the test report for that >>> component»._ >>> >>> Does it make sense? >>> >>> Regards >>> >>> Amund >>> >>> Fra: Richard Nute >>> Sendt: 30. august 2024 22:37 >>> Til: EMC-PSTC@LISTSERV.IEEE.ORG >>> Emne: Re: [PSES] SV: [PSES] SV: [PSES] IEC62368-1 - Abnormal condition >>> - Fail >>> >>> Hello Amund: >>> >>> Did you point out to the lab the relevant sub-clauses of 62368-2 per >>> Charlie Blackham? If so, what was their reply (i.e., what safeguard >>> failed)? >>> >>> Good luck, >>> >>> Rich >>> >>> From: Amund Westin <am...@westin-emission.no> >>> Sent: Friday, August 30, 2024 5:15 AM >>> To: EMC-PSTC@LISTSERV.IEEE.ORG >>> Subject: [PSES] SV: [PSES] SV: [PSES] IEC62368-1 - Abnormal condition >>> - Fail >>> >>> Under abnormal condition (holes in the chassis are blocked), the >>> internal DC/DC module reach its maximum spec (+85C) and at +89C, the >>> product make a shutdown due to its own safety. >>> >>> * No fire is generated. >>> * Hot module/component, yes, but not accessible for humans (inside >>> product) >>> * The module is located inside the fire enclosure. >>> * Nothing dangerous situation is generated, but product shuts down >>> due to too hot module. Product could (maybe) also get permanent >>> damaged, if the module broke down due to the heat. >>> >>> Anyway, the product seems to be safe regarding to both fire safety and >>> electrical hazard. Isn’t that what it’s all about? Safe product, >>> but maybe poor reliable if such Abnormal condition happens. >>> >>> The lab does not agree with me. >>> >>> BR Amund >>> >>> Fra: Amund Westin >>> Sendt: 29. august 2024 20:05 >>> Til: EMC-PSTC@LISTSERV.IEEE.ORG >>> Emne: [PSES] SV: [PSES] IEC62368-1 - Abnormal condition - Fail >>> >>> Thanks James, >>> >>> No, the component that gets hot, but it is not accessible. It’s on a >>> pcb inside the metal enclosure. The temperature was measures to 87C. >>> The CB test report for the DC/DC component says it was tested and >>> approved up to 85C. >>> >>> No ignition. The FAIL statement was due to higher temperature than >>> approved in CB report for the component. >>> >>> Best regards Amund >>> >>> Fra: James Pawson (U3C) >>> Sendt: 29. august 2024 18:35 >>> Til: EMC-PSTC@LISTSERV.IEEE.ORG >>> Emne: Re: [PSES] IEC62368-1 - Abnormal condition - Fail >>> >>> Amund, >>> >>> Is the temperature accessible? >>> >>> Is there any ignition caused? >>> >>> If no then the requirements have likely been met. >>> >>> All the best >>> >>> James >>> >>> James Pawson >>> >>> Managing Director & EMC Problem Solver >>> >>> Unit 3 Compliance Ltd >>> >>> EMC : Environmental & Vibration : Electrical Safety : CE & UKCA : >>> Consultancy >>> >>> www.unit3compliance.co.uk [2] | ja...@unit3compliance.co.uk >>> >>> +44(0)1274 911747 | +44(0)7811 139957 >>> >>> 2 Wellington Business Park, New Lane, Bradford, BD4 8AL >>> >>> Registered in England and Wales # 10574298 >>> >>> _Office hours:_ >>> >>> _Every morning my full attention is on consultancy, testing, and >>> troubleshooting activities for our customers’ projects. I’m >>> available/contactable between 1300h to 1730h Mon/Tue/Thurs/Fri._ >>> >>> _For inquiries, bookings, and testing updates please send us an email >>> on __he...@unit3compliance.co.uk__ or call 01274 911747. Our lead >>> times for testing and consultancy are typically 4-5 weeks._ >>> >>> From: Charlie Blackham <char...@sulisconsultants.com> >>> Sent: 29 August 2024 17:19 >>> To: EMC-PSTC@LISTSERV.IEEE.ORG >>> Subject: Re: [PSES] IEC62368-1 - Abnormal condition - Fail >>> >>> Amund >>> >>> Basic safeguard parameters may be exceeded during abnormal condition >>> tested in Annex B.3. >>> >>> B.3.8 Compliance criteria during and after abnormal operating >>> conditions >>> >>> _During an abnormal operating condition that does not lead to a single >>> fault condition, all safeguards shall remain effective. After >>> restoration of normal operating conditions, all safeguards shall >>> comply with applicable requirements._ >>> >>> _ _ >>> >>> _If an abnormal operating condition leads to a consequential fault, >>> the compliance criteria of B.4.8 apply_ >>> >>> _ _ >>> >>> The following is provided in PD IEC TR 62368‑2:2019, Part 2: >>> Explanatory information related to IEC 62368-1:2018 (same in the 2014 >>> version) >>> >>> Best regards >>> >>> Charlie >>> >>> Charlie Blackham >>> >>> Sulis Consultants Ltd >>> >>> Tel: +44 (0)7946 624317 >>> >>> Web: https://sulisconsultants.com/ [1] >>> >>> Registered in England and Wales, number 05466247 >>> >>> From: Amund Westin <am...@westin-emission.no> >>> Sent: 29 August 2024 17:07 >>> To: EMC-PSTC@LISTSERV.IEEE.ORG >>> Subject: [PSES] IEC62368-1 - Abnormal condition - Fail >>> >>> We measure a few degrees too high temperature on a power component >>> inside the product, when the ventilation holes in the chassis are >>> blocked (abnormal condition). >>> >>> Draft verdict from test lab is FAIL. >>> >>> Our claim is that such abnormal condition will not happen due to: >>> >>> * Product installed by skilled and trained technical persons. >>> * Product installed in racks / environment that make it impossible >>> for such blocking. >>> >>> The product is placed in closed premises with fences covering the >>> premises. It’s part of international aircraft navigation system. >>> >>> Question: >>> >>> Is it reasonable to require such an abnormal condition test, when that >>> a situation is not practical to happened in real life? >>> >>> Thanks! >>> >>> BR Amund Westin >>> >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG >>> >>> All emc-pstc postings are archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ [3] >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html [6] >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 [7] >>> >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG >>> >>> All emc-pstc postings are archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ [3] >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html [6] >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 [7] >>> >>> [8] >>> >>> Virus-free.www.avg.com [8] >>> >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG >>> >>> All emc-pstc postings are archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ [3] >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html [6] >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 [7] >>> >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG >>> >>> All emc-pstc postings are archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ [3] >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html [6] >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 [7] >>> >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG >>> >>> All emc-pstc postings are archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ [3] >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 >>> >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG >>> >>> All emc-pstc postings are archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ [3] >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html [6] >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 [7] >>> >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG >>> >>> All emc-pstc postings are archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ [3] >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html [6] >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 [7] >>> >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG >>> >>> All emc-pstc postings are archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ [3] >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html [6] >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 [7] >>> >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG >>> >>> All emc-pstc postings are archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ [3] >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 >>> ------------------------- >>> >>> 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-PSTC@LISTSERV.IEEE.ORG All emc-pstc postings are >>> archived and searchable on the web at: >>> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ >>> >>> Website: https://ewh.ieee.org/soc/pses/ [4] >>> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >>> to unsubscribe) [5] >>> List rules: https://ewh.ieee.org/soc/pses/listrules.html >>> >>> For help, send mail to the list administrators: >>> Mike Sherman at: msherma...@comcast.net >>> Rick Linford at: linf...@ieee.org >>> >>> For policy questions, send mail to: >>> Jim Bacher at: j.bac...@ieee.org >>> ------------------------- >>> >>> To unsubscribe from the EMC-PSTC list, click the following link: >>> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 >>> >>> Links: >>> ------ >>> [1] https://sulisconsultants.com/ >>> [2] http://www.unit3compliance.co.uk/ >>> [3] https://www.mail-archive.com/emc-pstc@listserv.ieee.org/%20 >>> [4] https://ewh.ieee.org/soc/pses/ >>> [5] https://ewh.ieee.org/soc/pses/list.html >>> [6] https://ewh.ieee.org/soc/pses/listrules.html >>> [7] https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 >>> [8] >>> http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient >> >> -- >> Best regards / Mit freundlichen Grüßen / Mvh Amund Westin (Siv.ing / >> M.Sc) >> ********************************** >> Westin Emission >> Oslo, Norway >> EMC / Safety / Product Compliance consultant >> Cell: (+47) 920 17 031 >> Skype: EMC.amund >> E-mail: am...@westin-emission.no >> Web: https://www.westin-emission.no/ >> Linkedin: http://lnkd.in/2xHtrH >> Member of Norsk Elektroteknisk Komite - sector EMC and IET >> ********************************** >> >> - >> ---------------------------------------------------------------- >> 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-PSTC@LISTSERV.IEEE.ORG >> >> All emc-pstc postings are archived and searchable on the web at: >> https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ >> >> Website: https://ewh.ieee.org/soc/pses/ >> Instructions: https://ewh.ieee.org/soc/pses/list.html (including how >> to unsubscribe) >> List rules: https://ewh.ieee.org/soc/pses/listrules.html >> >> For help, send mail to the list administrators: >> Mike Sherman at: msherma...@comcast.net >> Rick Linford at: linf...@ieee.org >> >> For policy questions, send mail to: >> Jim Bacher: <j.bac...@ieee.org> >> _________________________________________________ >> To unsubscribe from the EMC-PSTC list, click the following link: >> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > > -- > Best regards / Mit freundlichen Grüßen / Mvh Amund Westin (Siv.ing / > M.Sc) > ********************************** > Westin Emission > Oslo, Norway > EMC / Safety / Product Compliance consultant > Cell: (+47) 920 17 031 > Skype: EMC.amund > E-mail: am...@westin-emission.no > Web: https://www.westin-emission.no/ > Linkedin: http://lnkd.in/2xHtrH > Member of Norsk Elektroteknisk Komite - sector EMC and IET > ********************************** > > - > ---------------------------------------------------------------- > 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-PSTC@LISTSERV.IEEE.ORG > > All emc-pstc postings are archived and searchable on the web at: > https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ > > Website: https://ewh.ieee.org/soc/pses/ > Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to > unsubscribe) > List rules: https://ewh.ieee.org/soc/pses/listrules.html > > For help, send mail to the list administrators: > Mike Sherman at: msherma...@comcast.net > Rick Linford at: linf...@ieee.org > > For policy questions, send mail to: > Jim Bacher: <j.bac...@ieee.org> > _________________________________________________ > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > > - > ---------------------------------------------------------------- > 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-PSTC@LISTSERV.IEEE.ORG > > All emc-pstc postings are archived and searchable on the web at: > https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ > > Website: https://ewh.ieee.org/soc/pses/ > Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to > unsubscribe) > List rules: https://ewh.ieee.org/soc/pses/listrules.html > > For help, send mail to the list administrators: > Mike Sherman at: msherma...@comcast.net > Rick Linford at: linf...@ieee.org > > For policy questions, send mail to: > Jim Bacher: <j.bac...@ieee.org> > _________________________________________________ > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 - ---------------------------------------------------------------- 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-PSTC@LISTSERV.IEEE.ORG All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: msherma...@comcast.net Rick Linford at: linf...@ieee.org For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1