Hi Huu Dung Dinh I'm affraid you have to use X1 capacitors, even if you place a resistor in series.
Usually you would use such capacitors in a power line filter. You would use X Capqacitors between lines and Y Capacitors between each line and protective ground. Further on you usually would place a resistor (1M or higher) PARALLELL to the capacitors, in order to make sure that they are discharged in a reasonalble time (like 5s to Max 60V). Regards George Nachricht geschrieben von "Dinh, Huu Dung" > Dear all, I would like to ask you the following: §1.5.6 of IEC 60950 3rd ED - Capacitors in primary circuits states that: A capacitor connected between 2 lines conductors of the primary circuit, or between one line conductor and the neutral conductor, shall comply with IEC 60384-14, sub-class X1 or X2. 1) Does that mean that capacitors connected over the lines and after the main fuses have to comply with the requirements ? 2) If yes, have capacitors connected in series with other components (f.e. a resistance) to comply with the requirements too ? I appreciate any answer. Regards, Huu Dung Dinh DET NORSKE VERITAS, RN 413 Testing and Certification of Electrical Equipment Division Nordic Countries ( +47 67 57 95 91 FAX +47 67 57 89 60 * Veritasveien 1, N-1322 Høvik, Norway . [email protected] < ************************************************************** * Dr. Georg M. Dancau * HAUNI MASCHINENBAU AG * * [email protected] * Manager Technology Research * * TEL: +49 40 7250 2102 * K.A.Koerber Chaussee 8..32 * * FAX: +49 40 7250 3801 * 21033 Hamburg, Germany * ************************************************************** * home: Tel: +49 4122 99451 * Hauptstr. 60a * * Fax: +49 4122 99454 * 25492 Heist, Germany * ************************************************************** ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
