Date sent: Sat, 18 Aug 2012 08:56:30 +0100 Send reply to: John Woodgate <[email protected]> > In message > <!&!AAAAAAAAAAAYAAAAAAAAAJBbQmYH6FNPl0oV0KGUzsyChQAAEAAAAFWDfmYRsYJMlAsxE > [email protected]>, dated Sat, 18 Aug 2012, John Allen > <[email protected]> writes: > > >NRTLs inspect from 2 to 4 times a year, often on an unannounced basis, > >and that does keep manufacturers ?on their toes? > > I wouldn't call that 'far' more frequent, and that sort of control can > be deadly - see below.
100% to 400% more often. How often would give you confidence? As a former NRTL (noninspecting) employee, I was subjected to noise from some manufacturer's about how intrusive quarterly inspections were. I suspect there's no system that will satisfy all players. > With self-certification, the appropriate action is to determine whether > the product is still compliant when the XY23C is introduced, or when the > substitution is discovered, with tests if necessary, and if it is, no > further action is necessary. At another former employer, I heard a story of a moderately large piece of rack mountable equipment designed by an European subsidiary intended for the European market that could not be brought into compliance with radiated emissions limits using standardized test methods without significant revisit to the drawing board. Their solution? Place the unit on its back. Et voila! A self certification was emitted. I would not call this company small. I could speculate as to what other "special considerations" might have been found self certifiable. I'd like to hear other stories of the self certification regime. Peter Tarver - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
