I read in !emc-pstc that Rich Nute <[email protected]> wrote (in <[email protected]>) about 'Applying the appropriate ENs', on Wed, 26 Sep 2001:
>Unfortunately, this archaic and provincial view on >the part of standards organizations 'Standards organizations' are people just like you and me (especially me). >that standards >should be per product has created problems that >most of us would like to avoid. 'Most' of us? > >Consider product safety. The safeguards required >for protection against electric shock, for example, >are independent of the product. Although we have >product standards for hair dryers and for computers, >the requirements for safety are common. But the standards for these products have to be written by experts in the design of these products - non-experts would not know the problems that can arise. To produce generic safety standards, experts in the design of ALL products would be required. These exist only on the newsgroups.(;-) > >Rather than address products, safety standards need >to address hazards. The IEC high-level Advisory Committees address anomalous differences between requirements in EMC (ACEC) and safety (ACOS) standards. There should be no unnecessary differences between product standards, but some differences are fully justified. For example, some products must be allowed to get very hot, or to have exposed moving parts, otherwise they would not work. You are doubtless aware that IEC/EN60950 (and, I suppose, UL1950) has an extensive text on hazards. > > >While the products I deal with are computer >peripherals, I had the opportunity the other day to >attend a seminar on insulation diagrams used for >medical products. The interesting fact is that the >seminar did not address anything unique to medical >products. This may be down to the presenter, rather than to the question of whether medical products require special safety standards (which they do). -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
