Re: [PSES] Can anyone tell me what this symbol means?
Doug, Can there be love without attachment … or attachment is the first step to love or love begins attachment… Sudhakar Wasnik, > On Mar 3, 2023, at 8:28 AM, Douglas Nix > <0bb8ff993b10-dmarc-requ...@listserv.ieee.org> wrote: > > All, > > I just got confirmation from the engineer who created the drawing that that > symbol is indeed a heatsink. Thanks all for your responses. > > Doug Nix > d...@mac.com > (519) 729-5704 > > "Attachment is a form of dependency based on ego; love is non-attachment > based on spirit." - Deepak Chopra > > > >> On Mar 3, 2023, at 03:05, James Pawson (U3C) >> wrote: >> >> I would agree with Dan, looks like a notation for a heatsink. >> >> The pinout looks like a surface mount MOSFET so I would guess the meaning as >> “requires heatsinking / thermal spreading as part of PCB structure” >> >> If part of a DC/DC converter or power supply this is a good way to connect a >> high dV/dt node to one plate of a capacitor! Welcome to the wonderful world >> of engineering compromise – EMC or thermal performance? >> >> All the best >> James >> >> James Pawson >> Managing Director & EMC Problem Solver >> >> Office hours: >> My mornings are reserved for full attention on consultancy, testing, and >> troubleshooting activities for our customers’ projects. I am otherwise >> contactable between 1300h to 1730h from Monday to Friday. >> For inquiries, bookings, and testing updates please send us an email on >> he...@unit3compliance.co.uk <mailto:he...@unit3compliance.co.uk> or call >> 01274 911747. Our lead times for testing and consultancy are typically 4-5 >> weeks. >> >> Unit 3 Compliance Ltd >> EMC : Environmental & Vibration : Electrical Safety : CE & UKCA : Consultancy >> >> www.unit3compliance.co.uk <http://www.unit3compliance.co.uk/> | >> ja...@unit3compliance.co.uk <mailto: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 >> >> From: Dan Roman <0d75e04ed751-dmarc-requ...@listserv.ieee.org> >> Sent: 02 March 2023 22:28 >> To: EMC-PSTC@LISTSERV.IEEE.ORG >> Subject: Re: [PSES] Can anyone tell me what this symbol means? >> >> Maybe that the heatsink is connected to the drain? >> >> Dan >> >> >> From: Doug Nix [mailto:d...@ieee.org] >> Sent: Thursday, March 2, 2023 4:53 PM >> To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> >> Subject: [PSES] Can anyone tell me what this symbol means? >> >> Colleagues, >> >> I came across the eyelash-like symbol above the MOSFET in the image below, >> and I am at a loss for what it represents. My searches of schematic symbol >> databases has come up dry as well. Anyone know what this means? >> >> >> >> Doug Nix >> d...@ieee.org <mailto:d...@ieee.org> >> +1 (519) 729-5704 >> >> - >> >> 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 >> mailto:emc-p...@ieee.org>> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieee-pses.org/emc-pstc.html >> Website: http://www.ieee-pses.org/ >> Instructions: http://www.ieee-pses.org/list.html (including how to >> unsubscribe) <http://www.ieee-pses.org/list.html> >> List rules: http://www.ieee-pses.org/listrules.html >> For help, send mail to the list administrators: >> Mike Cantwell mailto:mcantw...@ieee.org>> >> For policy questions, send mail to: >> Jim Bacher mailto:j.bac...@ieee.org>> >> David Heald mailto:dhe...@gmail.com>> >> To unsubscribe from the EMC-PSTC list, click the following link: >> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC=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 >> mailto:emc-p...@ieee.org>> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieee-pses.org/emc-pstc.html >> Website: http://www.ieee-pses.org/ >> Instructions: http://www.ieee-pses.org/list.html (including how to >> unsu
[PSES] HV battery
Hi Guys, 1. Per UN 38.3 single cell required to have protective means to be declared as single cell battery…. And protective means such as fixed terminals, solid enclosure, safety vent can be considered as a protective means to declare it as a single cell battery? 2. IEC 62619 tests under sec 8. Overcharge control of voltage, overcharge control of current requires voltage of 10% higher than rated, and 20% higher than rated current respectively… question is , charger to charge such massive battery ( 600 - 1000 VDC and current of the order of 300 to 400 Amp) has to defeat several safety measures before it can be made to deliver higher voltage and current . These defeats can be seen as faults. And battery has several safety measures before it can be made to receive such charging conditions This means creating deliberate several faults. What’s the rational of these tests under single fault conditions? Would like hear battery safety experts comments Kind Regards, Sudhakar Sent from my iPhone - 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 All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas Mike Cantwell For policy questions, send mail to: Jim Bacher: David Heald:
Re: [PSES] IP Code Question
“Outdoor “ …IP … will it withstand the “ flash rain, or severe rainfall leading to flooding… Kind Regards, Sudhakar Sent from my iPhone > On Feb 14, 2022, at 12:56 PM, Charlie Blackham > wrote: > > > I generally see outdoor telecoms enclosures specified and tested to IP66 or > IP67, or NEMA 4X, but EN 60950-22:2006 and EN 62368-1:2020 only required IP54 > to provide PD2 environment. > > Best regards > Charlie > > Charlie Blackham > Sulis Consultants Ltd > Tel: +44 (0)7946 624317 > Web: https://sulisconsultants.com/ > Registered in England and Wales, number 05466247 > > From: Douglas Nix <0bb8ff993b10-dmarc-requ...@listserv.ieee.org> > Sent: 14 February 2022 19:35 > To: EMC-PSTC@LISTSERV.IEEE.ORG > Subject: Re: [PSES] IP Code Question > > I agree wit Ted Eckert on this. Generally for outdoor use you’d need IP65 at > least. > > Doug Nix > > "The most wasted of all days is one without laughter.” — e.e. cummings. > > > > > On 14-Feb-22, at 09:23, Brian Kunde wrote: > > An IP code of IPx2 implies the enclosure protects against the ingress of > water drops at 15° tilt. Now, most PC enclosures protect the electronics > from occasional exposure to water drops, but it is not designed to be exposed > to water drops continuously. So can you rate an electronic device IP22, for > instance, but not intend it to be used outside or in an environment where it > is exposed to water on a regular basis? > > Thanks for your input. > The Other Brian > - > > 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 > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > For help, send mail to the list administrators: > Scott Douglas > Mike Cantwell > For policy questions, send mail to: > Jim Bacher > David Heald > > - > > 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 > > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas > Mike Cantwell > > For policy questions, send mail to: > Jim Bacher > David Heald > > - > > 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 > > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas > Mike Cantwell > > For policy questions, send mail to: > Jim Bacher > David Heald - 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 All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas Mike Cantwell For policy questions, send mail to: Jim Bacher: David Heald:
Re: [PSES] UL 510 Flame retardant tape
This film in any form may act as a fire enclosure and other enclosure can act as mechanical enclosure… it is not asked to do all the enclosure function by a single enclosure… even though that’s how it is practiced … Sent from my iPhone > On Oct 8, 2021, at 1:11 PM, Dan Roman > <0d75e04ed751-dmarc-requ...@ieee.org> wrote: > > > I agree with Ted, you’ll need to try this out first. Just because it is > flame retardant does not mean it will be mechanically suitable for the > pressures involved during a lithium battery catastrophic failure. If the > enclosure is breached because it cannot physically contain the failure it > won’t matter what its flame rating is. > > Have a good weekend everyone, > > Dan > > > From: Ted Eckert <07cf6ebeab9d-dmarc-requ...@ieee.org> > Sent: Friday, October 8, 2021 6:40 AM > To: EMC-PSTC@LISTSERV.IEEE.ORG > Subject: Re: [PSES] UL 510 Flame retardant tape > > Hello Charlie, > > I apologize for not answering your question directly, but I would like to > respond based on the general intent. Kapton tape is flame resistant, but I > recommend that you take samples and apply a flame to see how it reacts. My > personal opinion is that Kapton tape won’t contribute fuel to a fire, but it > isn’t likely to contain it either. Thin film material might not be suitable > if the intent is to slow the progression of a fire to keep it from reaching > other flammable material. > > Consider fabricating the proposed tape enclosure on a few sample batteries > and intentionally fault them to induce an exothermic reaction. The results > may give an indication whether you want to pursue this path further. > > Best regards, > Ted Eckert > > The opinions expressed are my own and do not necessarily reflect those of my > employer or TC 108. > > From: Charlie Blackham > Sent: Friday, October 8, 2021 6:25 AM > To: EMC-PSTC@LISTSERV.IEEE.ORG > Subject: [EXTERNAL] [PSES] UL 510 Flame retardant tape > > All > > Various Kapton tapes are sold as Flame Retardant, some seem to reference UL > 94 and others UL 510. > > The scenario is a product falling under EN 62368-1 and the secondary lithium > battery needs a fire enclosure and rather than using the product enclosure, > one could be made for the battery using a suitable plastic or manual > application of retardant tape. > > Is there any correlation between UL 510 and UL94 when considering creating a > Fire Enclosure for a battery as per Clause M.4.3 ? > > > > Best regards > Charlie > > Charlie Blackham > Sulis Consultants Ltd > Mead House > Longwater Road > Eversley > RG27 0NW > UK > Tel: +44 (0)7946 624317 > Email: char...@sulisconsultants.com > Web: https://sulisconsultants.com/ > Registered in England and Wales, number 05466247 > > - > > 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 > > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas > Mike Cantwell > > For policy questions, send mail to: > Jim Bacher > David Heald > > - > > 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 > > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas > Mike Cantwell > > For policy questions, send mail to: > Jim Bacher > David Heald > > - > > 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 > > > 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
[PSES] Hello
We are trying to get EMC testing for very High voltage ( 600 V) Li-ion used in heavy earthmovers like loaders, movers etc. The standard usually considered is IEC 13766-1 . Any information on the test lab capability and very good understanding of this standard will be of very good help... Kind Regards, Sudhakar Wasnik, Sent from my iPhone - 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 All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas Mike Cantwell For policy questions, send mail to: Jim Bacher: David Heald:
Re: [PSES] Power quality issues in India
Dan, Yes, Indian power supply system is quite notorious for surges, voltage fluctuations etc. Most of Telecom or other industries beef up Power supply system as well as use UPS, HTH, Sudhakar wasnik Sent from my iPhone > On Mar 24, 2020, at 10:17 AM, Wiseman, Joshua > wrote: > > > Dan, in a past life I worked for a company that makes commercial ice cream > makers like you would see in your local Dairy Queen, McDonalds, Burger King, > etc. For India we had to include a UPS for some of our models because the > power there would give us problems with the controls. I don’t know the > details but I do recall adding a UPS option to a newer model unit as recently > as 3 yrs ago because of it. > > The UPS took care of the problem for the manufacturer when I worked there. > > Josh > > > From: Dan Roman <0d75e04ed751-dmarc-requ...@listserv.ieee.org> > Sent: Tuesday, March 24, 2020 12:35 PM > To: EMC-PSTC@LISTSERV.IEEE.ORG > Subject: [PSES] Power quality issues in India > > EXTERNAL SENDER: Verify links, attachments and sender before taking action > > > Hello List! Hope everyone is staying healthy and safe. > > I would like to know if anyone has experience with power quality issues in > India related to damaging equipment and whether you find it is necessary to > harden power supply designs specifically for India that you would not > normally consider for other regions like the EU. From some reading on the > topic there seem to be power quality issues but these are largely power > interruptions and voltage sags that would temporarily cause the product to > stop functioning but not result in the permanent damage of a global design. > > I have no recent experience with India but over a decade ago I do not recall > having any issues with equipment in data centers, but perhaps they had > facility power conditioning so the local building infrastructure prevented > issues. Is the failure rate with typical consumer products higher in India > because of power quality issues? Are extra precautions necessary? > > Thank you. > > __ > Dan Roman, N.C.E. > Senior Member > IEEE Product Safety Engineering Society > mailto:dan.ro...@ieee.org > > > > > > - > > 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 > > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas > Mike Cantwell > > For policy questions, send mail to: > Jim Bacher > David Heald > > - > > 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 > > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas > Mike Cantwell > > For policy questions, send mail to: > Jim Bacher > David Heald - 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 All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas Mike Cantwell For policy questions, send mail to: Jim Bacher: David Heald:
Re: [PSES] Battery certification issue
India is a CB scheme member, However the Mandatory (Compulsory) registration of ITE and A/V products is a national registration scheme. As it is the national scheme, India insist on in-country testing at BIS( Bureau of Indian Standards) certified labs. The applicable standard is BIS ... and not IEC/EN 60950-1. Best, Sudhakar On Thursday, September 4, 2014 1:02 PM, John Woodgate j...@jmwa.demon.co.uk wrote: In message c8bf8e4aa3b145658432b55fa8948...@bn1pr08mb202.namprd08.prod.outlook.com , dated Thu, 4 Sep 2014, Tyra, John john_t...@bose.com writes: India is a member if the CB scheme yet they will not accept CB certifications and reports for the recent mandatory certification scheme that was rolled out in that country. They insist they must do complete retesting. There was a recent IECEE vote to suspend their membership in the CB Scheme which I read recently failed so they are still a member so I am not so sure it is an issue for an NCB to reject another NCB members report. But this is politics at work, not science and engineering. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk Quid faciamus nisi sit? John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas 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://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas 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] Industrial
Hello Guys, ROHS2 Question: The question is on article 4 4 ( d) and (e) monitoring control instruments and Industrial monitoring control Instruments How does this directive defines industrial and what constitutes professional use? I have the following info, However I would like to get more clarity on this from our EU experts. Article 3(24) of the RoHS Directive (2011/65/EU) defines (somewhat ) industrial monitoring and control systems: ‘industrial monitoring and control instruments’ means monitoring and control instruments designed for exclusively industrial or professional use.The RoHS 2 Guidance FAQ, Q6.9, describes “professional use”: Q6.9 How should “professional use” be interpreted? Does it apply only at the first placing on the market, or also at later stages? “Professional use”, as referred to in the exclusion of non-road mobile machinery and the definition of industrial monitoring and control, refers to the use phase of the EEE. In order for EEE to be marketed for “professional use”, its intended end user has to be a professional. It should also be noted that RoHS 2 does not differentiate between EEE for professional or non-professional use other than in a few exclusions. These exclusions explicitly state that the equipment concerned is made available only for professional use, in order for the exclusion to apply. In some cases a manufacturer may place EEE on the market with the intent that it is only used for professional use. However a distributor outside the control of the manufacturer may make the EEE available for a non-professional use (for example through sale or hire). In these cases the distributor is modifying the purpose of the EEE and therefore may be taking on the responsibility for the compliance of the EEE (Article 11). Generally, The FAQs reflect the views of DG Environment (Guidance document) and are not legally binding. The FAQs are considered to be a “living document” that may be revised in the future. Thx! Sudhakar - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas 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] Meaning of regulating network in 61010-1
Electrical engineering offers coures in Network theory, electrical circuits therory etc However if you make a schematic with Z1, Z2 Z3 etc in series/Parallel combination, It is more like impedence network and not really a circuit. You can transform this network to circuits by changing Z1, Z2, Z3 etc to RLC in series/Parallel combination. So in short impedence single element/combination is a network and RLC single element/combination is circuit. Any takers Sudhakar From: Peter Tarver ptar...@enphaseenergy.com To: EMC-PSTC@LISTSERV.IEEE.ORG Sent: Tuesday, February 4, 2014 10:23 AM Subject: Re: [PSES] Meaning of regulating network in 61010-1 From: Crane, Lauren Sent: Friday, January 31, 2014 12:27 John, Your reply makes sense to me, but it also brings me to notice that circuit is used freely in the surrounding text, and yet the standard says regulating network rather than regulating circuit perhaps this implies network is a narrower concept? In undergrad courses I attended, 'network' and 'circuit' were used interchangeably. Peter 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://www.ieee-pses.org/list.html(including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas 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://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas 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] India BIS/DEITY mandatory registration scheme for ITE/AV products
Hi Guys, By this time you may be well aware of DEITY/BIS mandatory registration scheme has been extended till July 3, 2013 and till Oct 3, with certain conditions. This extended period should help manufacturer to better organize and plan for certification /registration. During this time BIS is planning to discuss the report variations issues with the approved labs and try to close the all variability. This is also good time to revisit the fundamental definitions like series classification which has a direct bearing on the # of samples to be tested and certfied. There are also some critical aspects in registration application like factory layout , applicant , contact info etc. which will require due attention, So that BIS does not reject it and cause delay in accepting the application As I mentioned previously in this e-mail , I am expert in all aspects of the scheme and have first hand knowledge and contact with DEITY/BIS Please feel free to contact me offline. Thank you , Sudhakar Wasnik, MS EE, IES Tel. 925-734-6708. From: sudhakar wasnik saloni95...@yahoo.com To: EMC-PSTC Listserver emc-pstc@LISTSERV.IEEE.ORG Sent: Friday, March 15, 2013 4:54 AM Subject: India BIS/DEITY mandatory registration scheme for ITE/AV products Hello Members, Indian has launched mandatory in country testing @ BIS approved laboratories and registration scheme for ITE and AV products ( Scope is limited to certain products) w.e.f April 3, 2013. I am expert in this scheme and if any body needs any kind of assistance in this scheme, Please contact me offline. Regards, Sudhakar Wasnik MS EE, IES - 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] India BIS/DEITY mandatory registration scheme for ITE/AV products
Hello Members, Indian has launched mandatory in country testing @ BIS approved laboratories and registration scheme for ITE and AV products ( Scope is limited to certain products) w.e.f April 3, 2013. I am expert in this scheme and if any body needs any kind of assistance in this scheme, Please contact me offline. Regards, Sudhakar Wasnik MS EE, IES - 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] LC measurement equipment for IEC 60601
Kikusui TOS3200 From: Brian Oconnell oconne...@tamuracorp.com To: EMC-PSTC@LISTSERV.IEEE.ORG Sent: Tuesday, January 8, 2013 5:29 PM Subject: RE: LC measurement equipment for IEC 60601 AR Research makes this stuff, as do others. Or you can build your own. Brian -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of INTI - Lucas D. Lago Sent: Tuesday, January 08, 2013 11:16 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: LC measurement equipment for IEC 60601 I am looking for an equipment to measure leakage current for medical devices according to IEC 60601:05. I have difficulties to find one to measure leakage current for CF type patient connections with the accuracy of ± 5 % required by IEC 60601, or better (± 3,5 % as indicated in TR 62354). The limit for several measurement in this case is 10 micro amperes, and most of LC measurement equipments do not have the accuracy of ± 5 % or better for this current. I would appreciate any suggestion of equipments. Tec. Lucas Damian Lago NATIONAL INSTITUTE OF INDUSTRIAL TECHNOLOGY R D CENTER OF TELECOMMUNICATIONS ELECTRONICS AND COMPUTER SCIENCE Electrical Safety Te (54 11) 4724-6369/6390 Fax (54 11) 4754-5194/4064 luc...@inti.gob.ar ___ 0800 444 4004 | www.inti.gob.ar - 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
[PSES] Ball drop test and Impact hammer test ... IEC60950-1 2005 and UL, CSA variation
Hi Guys, Can the ball drop test be conducted using impact hammer ? I do not see any credible reason for not using the impact hammer. Impact test using impact hammer delivers x amount of Joules energy upon impact similar to the dropping of steel ball of certain size from certain height. Thanks, Sudhakar Wasnik, MS EE, IES Apple 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] Ball drop test and Impact hammer test ... IEC60950-1 2005 and UL, CSA variation
You can make 5.0J Impact hammer and use it From: doug...@gmail.com doug...@gmail.com To: Sudhakar Wasnik saloni95...@yahoo.com; EMC-PSTC EMC-PSTC@listserv.ieee.org Sent: Tuesday, January 8, 2013 6:33 PM Subject: Re: [PSES] Ball drop test and Impact hammer test ... IEC60950-1 2005 and UL, CSA variation Typically the spring loaded impact hammer is 0.5 Joules, the 50mm steel sphere is 5.0 Joules when doing the vertical or pendulum drop. Doug Douglas E Powell http://www.linkedin.com/in/dougp01 http://www.linkedin.com/in/dougp01 From: sudhakar wasnik saloni95...@yahoo.com Date: Tue, 8 Jan 2013 18:19:34 -0800 To: EMC-PSTC@LISTSERV.IEEE.ORG ReplyTo: sudhakar wasnik saloni95...@yahoo.com Subject: [PSES] Ball drop test and Impact hammer test ... IEC60950-1 2005 and UL, CSA variation Hi Guys, Can the ball drop test be conducted using impact hammer ? I do not see any credible reason for not using the impact hammer. Impact test using impact hammer delivers x amount of Joules energy upon impact similar to the dropping of steel ball of certain size from certain height. Thanks, Sudhakar Wasnik, MS EE, IES Apple 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 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] Lithium Batteries and EMC
CE mark on the Li-ion battery is for product safety per IEC60950-1and NO EMC is involved. Sudhakar Apple Inc. From: rehel...@mmm.com rehel...@mmm.com To: emc-p...@ieee.org Sent: Friday, June 8, 2012 9:00 AM Subject: Lithium Batteries and EMC I noticed a lithium battery with a CE marking on it. Is EMC part of that CE Mark? Are there any EMC standards/requirements for smart batteries? Thanks, Bob Heller St. Paul, MN 55107-1208 Tel: 651-778-6336 Fax: 651-778-6252 - 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: JOB OPPORTUNITIES - SENIOR SAFETY ENGINEERS - PHILIPS
Hello Jill, Are these openings still open? I am interested in the senior safety engineer. I have MS EE and 24 yrs exp product safety compliance, EMI/EMC and reliability to global standards. Thank you , Sudhakar Wasnik 925-734-6708 Moffitt, Jill jill.moff...@philips.com wrote: WE HAVE IMMEDIATE OPENINGS FOR SENIOR SAFETY ENGINEERS IN OUR ANDOVER, MA. FACILITY AS FOLLOWS: The Andover Hardware Test Center provides testing, engineering and consulting services for primarily Philips Healthcare Medical Devices. The AHTC is comprised of EMC, Reliability, Product Safety, and Climatic disciplines. SENIOR SAFETY ENGINEER This role(s) will require engineering support for Medical Products Safety Testing and review basic safety and essential performance risk analysis as a member of cross-functional teams. The qualified candidate will be required to conduct all aspects of product safety evaluations including scheduling, planning, investigating, testing, documenting and coordinating projects through third-party agencies. Work with manufacturing and field-service for safety testing, safety critical component control and conduct periodic product audits. Mentor other Safety Engineer’s and Safety Technicians. This position(s) will have a BSEE or BSET and a minimum of five years of product safety evaluation experience preferably with medical devices. Candidate must be able to provide communicate effectively and provide medical equipment standards consultation to design engineers and regulatory engineers. This position requires good organizational skills, proficiency in MS Office applications, good writing skills for technical reports and communication skills. Prefer some experience with CAD. Desire passionate, ethical and process improvement minded individual. FOR IMMEDIATE CONSIDERATION PLEASE FORWARD YOUR RESUME TO: jill.moff...@philips.com Jill Moffitt Recruitment Sourcing Specialist Philips HR Shared Services NA - Recruiting 978-659-3201 - Voice 3000 Minuteman Rd. Andover, MA 01810 The information contained in this message may be confidential and legally protected under applicable law. The message is intended solely for the addressee(s). If you are not the intended recipient, you are hereby notified that any use, forwarding, dissemination, or reproduction of this message is strictly prohibited and may be unlawful. If you are not the intended recipient, please contact the sender by return e-mail and destroy all copies of the original message. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
Electroendosmosis.
Hi Guys, Can you share your exp/knowledge on Electroendosmosis for thermoplastic insulating materials? This is also called in NEC Article 310 and considered as fire hazard for cable used in wet locations. I will appreciate any info on this. Regards. Sudhakar - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
ENEC european complaince
Hello Wizards of compliance, Is ENEC mark mandatory for electrical products? Thanks, Sudhakar swas...@lsgc.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
