Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment - Part 2: Electrical characteristics for cores using YEE 2 laminations (IEC 61021-2:1995); German version EN 61021-2:1997
Transformers and inductors for use in electronic and telecommunication equipment - Part 3: Sectional specification for power transformers on the basis of the capability approval procedure (IEC 61248-3:1996); German version EN 61248-3:1997
Basic principles for graphical symbols for use on equipment - Part 1: Creation of graphical symbols for registration (IEC 80416-1:2008); German version EN 80416-1:2009