But Lou, it would be "safe" smoke!

Ed


------------------------
  From: Lou Gnecco <[email protected]>
  Subject: Re: Excessive smoke
  Date: Sat, 17 Apr 1999 09:53:19 -0400 
  To: [email protected]


> Group:
>         Here is a typical example of what is wrong with those european
> standards. Question: If you bought a TV set, turned it on, and it started to
> smoke, wouldn't you consider that a "failure?"
>         I dont know what they do in europe, but here in america we would
> return it and get our money back.
> 
> Lou
> 
> 
> At 12:06 AM 4/17/99 +0300, you wrote:
> >Dear Jeff,
> >
> >If a product smokes after an abnormal test it is not considered a 
> >failure. If the smoke was from an electrolytic capacitor, some test 
> >agencies might ask you to submit a declaration fom the capacitor 
> >manufacturer that the elecrolyte is not toxic.
> >
> >In regards to SEMI, if a product smoked after an abnormal test, it 
> >is also not considered a failure.
> >
> >Best Regards, 
> >
> >> I'm full of questions this week.  Here's today's.
> >> 
> >> If a component abnormal test generates excessive and sustained smoke
> >> (several minutes), but does'nt breach reinforced or double insulation, nor
> >> emit flame from the enclosure, is it considered a failure?  Intuitively, it
> >> seems like it would be, because of toxicity, but I have been unable to find
> >> anything in the safety standards to support this.  I have checked EN 60950,
> >> EN 50178, UL 1012, and CSA C22.2 No. 107.1.
> >> 
> >> By the way, this product could be used in clean room applications.  I am
> >> familiar with Semi S2, but it is unclear as to the degree of smoke allowed.
> >> Section 19.1 says, "The use of combustible and smoke-generating materials 
> >> in
> >> the construction of the process equipment should be limited."  In this 
> >> case,
> >> it was a PCB that smoked.
> >> 
> >> Thanks.
> >> 
> >> Jeff Jenkins
> >> Senior Regulatory Compliance Engineer
> >> Advanced Energy Industries, Inc.
> >> Fort Collins, CO USA 80525
> >> 
> >> Opinions are my own and not necessarily shared by Advanced Energy
> >> Industries, Inc. or its affiliates. 
> >> 

> >
> >PETER S. MERGUERIAN
> >MANAGING DIRECTOR
> >PRODUCT TESTING DIVISION
> >I.T.L. (PRODUCT TESTING) LTD.
> >HACHAROSHET 26, P.O.B. 211
> >OR YEHUDA 60251, ISRAEL
> >
> >TEL: 972-3-5339022
> >FAX: 972-3-5339019
> >E-MAIL: [email protected]
> >Visit our Website: http://www.itl.co.il
> >

--------------------------
Ed Price
[email protected]
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
619-505-2780
List-Post: [email protected]
Date: 04/19/1999
Time: 08:43:50
Military & Avionics EMC Services Our Specialty
Also Environmental / Metrology / Reliability
--------------------------



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