I agree with Jim and Carlos , If the design includes a specification that in case of a surge impulse the equipment is switched off, ok that's fine.
It exhibits as specified so full compliance. If I would like to have that power supply in my electronics, that's another question. If that is a good way to protect any electronics, I doubt it, although I am not aware of the nature of the design protected by the supply. I agree too that the surge impulse in it's various level is of no real concern to any PWS designer, most supplies exhibit Crit A for the surge impulse all the time, and nothing of the pulse is seen on the secondary. Please Jim, you made us curious about the specific electronics that need such a protection ;<)) Gert Gremmen ce-test, qualified testing ============================== http://www.cetest.nl Do you know our CE/E mark True type Font ? http://www.cetest.nl/cettf.htm ============================== >-----Original Message----- >From: [email protected] [mailto:[email protected]]On Behalf >Of Jim Hulbert >Sent: Wednesday, January 12, 2000 9:08 PM >To: [email protected] >Subject: Surge Test Performance Criterion > > > > > >A product has a switched mode power supply with a current sensing >circuit that >causes the supply to shut down when a surge pulse is applied to >the AC mains in >accordance with EN61000-4-5/IEC1000-4-5. After about 10 minutes, >the supply can >be turned back on and normal operation of the product can be resumed by the >operator. Does this product conform to criterion B of the EN >50082-1 or EN >55024 standards? I believe it does because the sensing circuit is >specifically >designed to protect the product against this kind of >voltage/current surge and >the product operation is fully recoverable by the operator >afterward. However, >I would like to hear how others who do this testing would interpret this. > >Jim Hulbert >Senior Engineer - EMC >Pitney Bowes > > > >--------- >This message is coming from the emc-pstc discussion list. >To cancel your subscription, send mail to [email protected] >with the single line: "unsubscribe emc-pstc" (without the >quotes). For help, send mail to [email protected], >[email protected], [email protected], or >[email protected] (the list administrators). > > --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
