Re: ESD - Air vs contact

Don't know if there are any web pages showing the fundamental differences; however, the differences in how the test is applied is described in IEC 61000-4-2. As a matter of history, contact mode testing was introduced in the mid-80's as a method of doing repeatable ESD testing by eliminating the

RE: TCF for EMC directive

Dan, There are several US CABs designated by NIST and confirmed by the EU. The RTTE CABs hold the same status as an EU Notified Body under the RTTE Directive. Best Regards, Barbara ___ Barbara L. Judge Vice President Compliance Certification Services

RE: TCF for EMC directive

Dan, Please note excerpts from RTTE Directive: Article 20 Repeal 1. Directive 98/13/EC is hereby repealed as from 8 April 2000. 2. This Directive is not a specific directive within the meaning of Article 2(2) of Directive 89/336/EEC. The provisions of Directive 89/336/EEC shall not apply to

Re: TCF for EMC directive

John Woodgate wrote: 10.5 is deleted in 'favour' of the RTTE Directive, isn't it? Article 10.5 is still in the current version of the EMC Directive. Dan Kwok -- Daniel Kwok, P.Eng. Principal EMC Engineer

RE: Hot Chassis?

Hi Dan, I agree with Rich below. I would like to add that some companies do incorporate double insulation from primary to secondary and primary to earth in Class I equipment. Some companies even go an extra step and specify a lower leakage current (0.25 mA - 0.5 mA) rather than the 3.5 mA

RE: Testing for the EMC directive

The following EMC standards would apply: EN 50081-1:1992, Generic Emissions EN 50082-1:1997, Generic Immunity EN 61000-3-2:1995, Power line harmonics emissions EN 61000-3-3:1995, Power line flicker emissions If the power level of the device is low, actual testing to the power line standards

Testing for the EMC directive

I have a consumer battery charger. What set of tests need to be done for CE mark approval? Sincerely looking for answers, Stuart Lopata Timco Engineering

RE: TCF for EMC directive

Hi Folks This topic has rather drifted and I cannot remember what the original point was. But, as a reminder, the following document on the UK Department of Trade and Industry might be of some use: http://www.dti.gov.uk/strd/emcps00.pdf This is the DTI guidance note on compliance with the

RE: Creepage dist. for more than 1000V ?

I hesitate to remind you all, but if anyone has a problem interpreting the requirements of IEC 60950, there is the TC74 Chairman's Advisory Panel. Briefly, the procedure is as follows : Questions for interpretation should, as a minimum - define the problem, making reference to a specific

IMPORTANT ANNOUNCEMENT - FAQ: Sources of EMC Safety Compliance Information

FAQ: Sources of EMC Safety Compliance Information FINAL NEWSGROUP POSTING - CHANGE OF WEB URL This is to let you know that I have just posted in two parts the 64th AND FINAL issue of the above FAQ to the newsgroup for regulatory/compliance matters and EMC and

Re: TCF for EMC directive

I read in !emc-pstc that Dan Kwok dk...@intetron.com wrote (in 3b79d9c1.159c7...@intetron.com) about 'TCF for EMC directive', on Tue, 14 Aug 2001: What happens if a type-examination certificate is required under Article 10.5 of the EMC Directive? Can a U.S. CAB also issue this certificate or

Re: ESD Testing

Richard, With today's faster circuits low voltage evernts may be more likely a problem than high voltage ones. Low voltage air discharges have much higher di/dt (and therefore interference potential) than high voltage events. A device that passes 15kV may easily fail at 1 kV because the di/di at

Re: TCF for EMC directive

Barbara Judge wrote: Notified Bodies have no part in assessing TCFs under Article 10.2 of the EMC Directive. Notified Bodies dealt with radio transmitting devices under Article 10.5 but the overwhelming majority of those devices now fall under the RTTE Directive. What happens if a

RE: TCF for EMC directive

John, I would agree that the ability to have face to face meetings with the Competent Body is of key importance. There are a number of bodies designated in the United States at this time, called Conformity Assessment Bodies, which hold equal status in the EU to any Competent Body in the EU.

RE: ESD Testing

Gaming machines in Australia are tested to 25kV air discharge and 10kV contact discharge. Gaming regulators are more concerned about intentional interference rather that accidental. I use 61000-4-2 as the basis for my test procedure even though the gaming machine requirements do not specify.