In the Test-Setup Section, Conditions during Testing of EN 55024 it is said:
Test should be made in the most representative mode. To my understanding, in the present days most ITE Equipment and Peripherals comes with a 3-prong plug, i.e. it is grounded. So, if the EUT has external ports intended to be connected to ITE Peripherals , Surge Testing should be done Line to Ground, with the secondary side of the Equipment Grounded, or with a Grounded ITE Peripheral connected. Dipl.-Ing. Rene Charton Manager EMC Services _____________ TUV Rheinland Taiwan Ltd. TAIPEI HEAD OFFICE Spring Plaza Building 14F, No.6, Min Chuan E. Rd., Sec. 3, Taipei 104, Taiwan, R. O. C. Tel. (02) 2516 6040 Ext. [ 086 ] e-mail: [email protected] Please respond to "Jim Hulbert" <[email protected]> To: [email protected] cc: (bcc: Rene Charton/TUV-Twn) Subject: Surge Testing per EN 55024/EN61000-4-5 Colleagues, EN 55024 calls for surge pulses to be applied line-to-line and line-to-earth on the AC mains port and line-to-ground on signal and telecommunications ports that connect directly to outdoor cables. However, if my EUT is encased in plastic covers and has no direct earth ground connection (class 2 power supply), is the line-to-line test on the AC mains the only surge test that I need to apply? It seems to me that performing a line-to-earth test on either the AC mains port or on signal/telecommunications ports is not warranted since the basic standard EN 61000-4-5 does not specify placing the EUT over a reference ground plane. With no reference ground plane and no direct ground connection how can a test be applied with respect to ground? Jim Hulbert Pitney Bowes --------- 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 adminstrators: Jim Bacher: [email protected], or Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected] ------------------------------------------- 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]
