Re: What about this standard(PTT, SNTI, PTF/KERMI) . . .

These look like the names or descriptions of various standards organizations or agencies. The full description would contain a document number and/or title. If you could describe the type of equipment involved and get your customer to be more specific about the standards they are concerned about,

What about this standard(PTT, SNTI, PTF/KERMI) . . .

Hi, All My customers are required by regulation.( Yellow box ) What is this plaese reply to me... EN(Germany) PTT(Italy) SNTI(Sweden) PTF/KERMI(Hungary) __ This email has been scanned by the Mes

Re: EN 55024 Conducted Immunity

An excellent point, which I had not considered. At the time IEC 1000-4-6 was written, the short cables that were contained on the desktop were not USB, but keyboard and mouse and monitor cables, and the monitor power often simply plugged back into the PC. So these cables were considered to “dead-e

Re: EN 55024 Conducted Immunity

Ken, You are correct, and that is probably the rationale behind the exemption. However, if the other end of that cable is connected to another device which has other cables (including a connection to the AC mains) then it can be argued that the whole setup can become more efficient at lower fre

Re: European Certification of Electrical Products

Hello Grace, In addition to the good responses to your query - consider the following resource: Visit the Safety Link at: and using your browser's search function (typically Control-F), input ENEC and hit your "Enter" key. This will take you to the ENEC Fact Sheet l

RE: Mobile phone killed one person in Korea

Hello Scott: The mobile phone is not the device that explodes. The lithium-ion battery within the mobile phone is the device that explodes. The battery explodes because of a fault inside the battery. A fuse cannot protect against such a fault. The root causes of the explosions have been ide

Re: European Certification of Electrical Products

In message , dated Thu, 29 Nov 2007, ted.eck...@apcc.com writes: >The ENEC mark is for a voluntary approval. It stands for European >Norms Electrical Certification. In that case, it is very seriously wrong! 'European Norms' are standards generated by the original European Iron and Steel Comm

RE: Mobile phone killed one person in Korea

It seems logical that the man was subject to some violent force which causes his injuries and in addition, damaged the phone battery causing it to heat up. The phone did not start the chain of events causing the man's injuries, but heated up in parallel due to the same physical force the man expe

Re: Mobile phone killed one person in Korea

In message , dated Thu, 29 Nov 2007, ted.eck...@apcc.com writes: > A person on a ladder or a platform may make incidental contact with >hazardous voltage. The shock may not cause significant injury, but it >startles the person to the point where they fall. You may be interested to learn that

Re: Mobile phone killed one person in Korea

In message <474ee86d.27b38c0a.4cdd.1...@mx.google.com>, dated Fri, 30 Nov 2007, Scott Xe writes: >In last one to two years, Apply, Sony, Toshiba, Dell, etc. recalled >their batteries. All have no built-in fuse?? They probably do, but the fuse protects against short-circuiting the battery ext

Re: EN 55024 Conducted Immunity

At 11/29/2007, Jody Leber wrote: Does anyone know the reasoning behind the exemption to cables 3 m or less for conducted immunity on signal ports? It would appear that if the product is supplied with a USB cable 3 m or less the test would not be required. Am I interpreting this correctly or po

RE: Mobile phone killed one person in Korea

Agreed. The main point is one I think many of us already know quite well.news articles do not necessarily pure fact or all the details but often lead a great number of people to draw a great number of conclusions while the true investigation into the details, chain of events and circumstances

Re: EN 55024 Conducted Immunity

Over the frequency range of the test - to 80 MHz, a 3 meter or shorter cable is electrically short, and field-to-cable coupling efficiency is proportional to electrical length when the cable is short. Therefore the coupled current or potential becomes vanishingly small at low frequencies. Ken Jav

RE: Mobile phone killed one person in Korea

> From: Kazimier Gawrzyjal > Sent: Thursday, November 29, 2007 8:59 AM > Also..this article alleges this poor fellow worked in a > quarry and implies he may have been near explosivesif > true and the poor chap worked in a quarry...was he carrying a > cell phone near explosives? > (usually

EN 55024 Conducted Immunity

All, Does anyone know the reasoning behind the exemption to cables 3 m or less for conducted immunity on signal ports? It would appear that if the product is supplied with a USB cable 3 m or less the test would not be required. Am I interpreting this correctly or possibly missing something?

RE: Mobile phone killed one person in Korea

From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Scott Xe Sent: Thursday, November 29, 2007 8:27 AM To: emc-p...@ieee.org Subject: RE: Mobile phone killed one person in Korea Nowadays, almost everyone in city carries mobile phone like carrying your walnut. Probably, it is now

Re: European Certification of Electrical Products

Hello Grace, The ENEC mark is for a voluntary approval. It stands for European Norms Electrical Certification. It is not a substitute for CE marking. ENEC was originally developed to cover electric lighting, but has been extended to a few other product categories. It covers safety and efficien

RE: European Certification of Electrical Products

Grace, Nick Williams has already given you the answer, but for additional information you might want to look at this, http://www.tuv.com/de/en/enec.html. It's all about perceived brand advantage. Best regards Neil R. Barker CEng MIET HonFSEE MIEEE Manager Quality Engineering e2v technolog

RE: Mobile phone killed one person in Korea

It seems even the experts seem to disagree to some extent according to this article. http://www.koreatimes.co.kr/www/news/nation/2007/11/123_14669.html In the article, this alleged quote from an expert is interesting" ``It can be dangerous. I have seen such explosions during experiments,"... I shu

RE: Mobile phone killed one person in Korea

I don't think that the root cause is being kept a secret. There are two basic problems. First, in order to get a higher power density from batteries, the internal materials such as insulators are being made thinner. The margin of error has been similarly reduced. If the internal materials fail,

Re: European Certification of Electrical Products

At 11:36 -0500 29/11/07, Grace Lin wrote: >1. Is the ENEC mark an alternate mark of CE? No, it's an attempt by the larger European based test houses to justify their existence and provide a 'one stop shop' for third party approvals for the European market. For products covered by the LVD and E

European Certification of Electrical Products

Dear Members, I was forwarded a document, "European Certification of Electrical Products", this morning. I would like to learn its legal stand. All I know, before this document, for EU regulatory compliance was a CE mark and related comformity assesment procedure. This document talks about ENE

RE: Mobile phone killed one person in Korea

Such report scares the public very much regardless of the truth or not. At least, no one in the world says there is evidence that the mobile phone will kill the people in normal use. Nowadays, almost everyone in city carries mobile phone like carrying your walnut. The risk is high as compared wi

Re: Emission Test Data

Hello Grace, The clause in the FCC regulations is in section 15.31, Measurement Standards. 15.31(o) states "The amplitude of spurious emissions from intentional radiators and emissions from unintentional radiators which are attenuated more than 20 dB below the permissible value need not be report

Emission Test Data

Dear Members, Can someone direct me to the rule section(s) of FCC Part 15, EN 55022, ANSI C63.4, or others, that emission test data 20dB below the limits doesn't need to be recorded? This seems a common practice for EMI engineers to determine if test data needs to be recorded. I quick flipped