Dear All, Many thanks for this year and all good wishes for a Merry Christmas and a Happy New Year to all of you and your families.
I would like to ask you a question and will thank for any comments. Low voltage secondary circuits of class II equipment usually float and have to be insulated from primary mains by reinforced insulation. Low voltage secondary circuits of class I equipment most of the time are directly earthed or referred to earth by some components. My understanding is that only basic insulation and good earth protection are needed between these circuits and primary mains if reinforced insulation is provided in the transformer. Am I right ? Best regards to all of you, 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] <mailto:[email protected]> Web http://www.dnv.com/eltestlab/ <http://www.dnv.com/eltestlab/> ********************************************************************** Neither the confidentiality nor the integrity of this message can be guaranteed following transmission on the Internet. This message has been swept by MAILsweeper at DNV for the presence of computer viruses. ********************************************************************** ------------------------------------------- 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]
