To all those knowledgeable with the 60950 series of safety standards, I've just been able to receive my copy of EN60950-1 (I've had IEC 60950-1 for some time now). Upon leafing thru EN60950-1, I noticed something missing that was in notes 1 & 2 of clause 6.1.2.1 of IEC60950 3rd Ed. That being, the requirement for supplementary insulation for a primary circuit for Norway and Sweden from TNV to earth. And looking into IEC60950-1, the note in clause 6.1.2.1 states "In Finland, Norway and Sweden, there are additional requirements for the insulation." Unfortunately, I've looked in clauses 2.3, 2.9, 2.10 and 6.1, but cannot find these additional requirements (even the CB Bulletin appears to provide only solid insulation requirements for 6.1.2.1). And to make this matter a bit more obtuse, both notes in clause 6.1.2.1 has been deleted >from EN60950-1 according to Annex NA.
So.... I have to ask, is supplementary insulation for a primary circuit still required here? If so, where is the requirement actually stated? Or, is supplementary insulation for a secondary circuit, or even basic insulation, now acceptable for Norway and Sweden? Or, have I overlooked something? I'm trying get thru the cobwebs back to daylight and I'm hoping that you will help me and maybe others with the same question(s). I look forward to your replies. Please advise. Best regards, Ron Pickard [email protected] This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ 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://www.ieeecommunities.org/emc-pstc
