Terms and nomenclature for cores made of magnetically soft ferrites - Part 3: Guidelines on the format of data appearing in manufacturers catalogues of transformer and inductor cores (IEC 60401-3:2015); German version EN 60401-3:2016— 16 стр.
Terms and nomenclature for cores made of magnetically soft ferrites. Guidelines on the format of data appearing in manufacturers catalogues of transformer and inductor cores— 18 стр.
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 12: Ring-cores (IEC 63093-12:2019); German version EN IEC 63093-12:2019— 20 стр.