forwarded for Peter. ____________________Forward Header_____________________ Subject: Re: EN 60 950 and Denmark Author: [email protected] List-Post: [email protected] Date: 09/30/99 8:40 AM
Rich, Very nicely described. But as you know, there are many manufacturers there with TNV-3 circvuits who do not have basic insulation between their TNV-3 and SELV and must rely on the exception to the requirements (ie earthing of the SELV circuit, having means for permanent connection to ground in addition to the earthing conductor in the power supply cord) and passingthe test of 6.2.1.3 (if applicable) - refer to Notes under Table 19 of the standard. For Class I products to comply for suitability where earthing is not reliable (and I understand, such places exist worldwide, not only in Denmark), make sure you meet with double and/or reinforced insulation requirements between primary to earth and primary to SELV and also with Table 19 (Separration from TNV Circuits) without the exemption conditions. Is this a fair summary? Do you think the Class I product must also pass Leakage for Class II equipment? Do you think there should be a marking to tell an installer product meets Class I but with added insulation - for example: one square in lieu of the two squares for Class II equipment? If so, I will bring it up during the next IEC TC 74 meeting. Regards, Peter @ Work RCIC - http://www.rcic.com Regulatory Compliance Information Center --------- 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).
