DS DS/EN 62317-7
DS DSEN 62317-7 2005-DEC-13 Ferrte cores - Dmensons -- Part 7 EER-cores
Specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EER-cores made of ferrite, the essential dimensions of coil formers to be used with them, and the effective parameter values to be used in calculations involving them.