Mel, According to the Standard EN 60 950 List of Decisions of the CENELEC OSM/EE (Operational Staff Meeting for Electronic Equipment), dated 6/97:
Clause 1.5.1: - Capacitors certified to IEC 384-14 1.ed will be accepted for 5 years after DOW of EN 132400. - Capacitors certified to IEC 384-14 2.ed and/or EN 132400 are acceptable. - Y1 capacitors are are accepted across reinforced insulation. - Y1 and Y2 capacitors are are accepted across basic insulation. - Y1 and Y2 capacitors are are accepted across supplementary insulation. - (So, obviously, two Y2 caps in series are accepted across reinforced insulation - my words, not CENELEC). - The enclosures of Y1 capacitors are considered to comply with the requirements of reinforced insulation with the exception of the area near to the leads where the insulation becomes thinner. Clause 2.9: - The insulation of the outside of a capacitor according to IEC 384-14 2.ed. fulfils (sic) the requirements for basic insulation. For reinforced insulation the distance requirements of EN 60065 and EN 60950 must be fulfilled. The above are published decisions; anything else is pure speculation. By the way, if IEC 384-14 requires larger spacings than IEC 950, then obviously there is no problem using such a capacitor in your ITE unit. Yes, the end-product standard prevails, so just use IEC 950 spacings on your PWB. Hope this helps. Cheers, Egon __________________________________________________________ Egon H. Varju, P.Eng. September 11, 1997 @ 3:48 PM CSA Pacific Region Tel: 1-604-244-6640 HAVE MODEM - WILL TRAVEL Fax: 1-604-244-6600 E-mail: [email protected] [email protected] __________________________________________________________
