Re: Seeking labs to test to EN55020

Hi John, The link you gave doesn't give you the NVLAP web site, but just a domain name holder. NVLAP appears to be operated by NIST, and you can find information about it on the NIST website: http://ts.nist.gov/ More specifically: http://ts.nist.gov/Standards/scopes/programs.htm

RE: Requirements for Power On/OFF Switch...US and EU Europe

In North America, you cannot have a mechanical attachment for the plug if that attachment requires the use of a tool to release it. A bracket screwed over the plug would make it permanently connected, and you are not to use flexible cords for permanent connections. The best alternate is a

Re: Seeking labs to test to EN55020

Hi Pat, Yes, NVLAP is under NIST. A good contact there is Brad Moore. Brad Moore brad.mo...@nist.gov Cheers, Derek Walton L F Research pat.law...@slpower.com wrote: Hi John, The link you gave doesn't give you the NVLAP web site, but just a domain name holder. NVLAP appears to be

Re: Seeking labs to test to EN55020

The full list of NVLAP accredited labs is at this location on the NIST web site. http://ts.nist.gov/ts/htdocs/210/214/scopes/programs.htm A2LA also has a directory of accredited labs. http://www.a2la.org/dirsearchnew/newsearch.cfm Ted Eckert --- On Mon, 7/28/08, pat.law...@slpower.com

RE: Seeking labs to test to EN55020

Thank you all for your help!! From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ted Eckert Sent: Monday, July 28, 2008 10:30 AM To: emc-p...@ieee.org Subject: Re: Seeking labs to test to EN55020 The full list of NVLAP accredited labs is at

Are ATEX, IEC and UL Zone classifications equivalent?

My company has a UL Listing for hazardous classified Industrial Control Panels. In the file, UL equates the Class/Division/Group listings to Class/Zone/Group equivalents. Are these different from ATEX Zone listings or IEC Zone listings? What different standards are used for ATEX or IEC

RE: Another Cancer Scare?

You are right. What I meant to say is that the higher order harmonics riding on top of the tens to hundreds of amps of the 60 Hz power source can induce cancer, according to some researchers. George From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John Woodgate Sent: Friday,

RE: Another Cancer Scare?

John, You have provided very good info. My comment is that the fields used in the experiments are relatively weak, in the range of a few microT to 1800 microT, and the durations are relatively short (a few days). Researchers have found that when they increase the field strength up to 100