You know...is there a piece of safety testing knowledge to be gained here? Well...actually a couple... First of all...for a product as ubiquitous as a cell phone...you would think that the manufacturer would perform battery short testing...then look for a standard or directive that calls for it. It seems that the liability risk is too large to go by the letter of the law when it comes to selecting a standard that applies. For something that is used so matter of factly by so many people, safety standards would have to be considered a minimum requirement, not an overall requirement. Meeting an international safety standard may make the customs officials happy...but it won't prevent Dewey, Cheatum and Howe from pressing a lawsuit.
Secondly, In my experience, flammability testing by UL, CSA et. al. all use cheesecloth as the gold standard for flammability...you know...set the unit to maximum power...wrap it in cheescloth...wait an hour to see if it burns...that kind of thing. How does the flammability of cheescloth compare with some typical synthetic fabrics? For instance...should there be a "rayon test" or a "polyester test" as opposed to a cheesecloth test for items that are likely to be stored within peoples' clothing? Does anybody know how the flammability compares? Chris Maxwell, M.Sc Design Engineer Critical Imaging LLC > In message > <201048ea81ba0745aca78e4cc8839001769...@desmdswms201.des.grplnk.net>, > dated Wed, 17 Jan 2007, "Haynes, Tim (SELEX) (UK Capability Green)" > <tim.hay...@selex-sas.com> writes > >>What protection is there in a phone design if the case when an >>electronic component fails with a short? > > In Europe, the LVD doesn't apply, because of the low supply voltage, but > the RTTE Directive does, and that doesn't have a lower bound on voltage. > So I suppose EN 60950 applies for electrical safety. > -- > OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk > There are benefits from being irrational - just ask the square root of 2. > John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK > > - > ---------------------------------------------------------------- > 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 > - 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 ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
