On Thu, 22 Aug 2002 21:42:34 +0100, John Woodgate <[email protected]> wrote:
> Pri to true SELV secondary doesn't pose a problem. The chassis is > irrelevant. For '950 SELV', there is no requirement for a pri-sec test > at any voltage above that for pri-chassis. Really? I thought primary - earthed chassis (Brian didn't said that the chassis is earthed, but I guess so) can have basic insulation, but primary - SELV should have double or reinforced insulation unless it is protected with other method such as earthed screen or protective bonding. On Thu, 22 Aug 2002 06:57:25 -0700, "Brian O'Connell" <[email protected]> wrote: > "to avoid damage to components or insulation which are not involved in the > test, disconnection of ICs or the like and the use of equipotential bonding > are permitted." > > For Pri/Sec testing, the screw connecting the Y-caps to the chassis is > removed, insulation is inserted between the screw insert and chassis. The clause said that components "which are NOT INVOLVED in the test" may be disconnected, but it seems the Y-caps ARE involved in the test. Isn't it? Regards, Tom -------------------------------------------------- Tomonori Sato <[email protected]> URL: http://member.nifty.ne.jp/tsato/ ------------------------------------------- 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: Ron Pickard: [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: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
