DIN EN 63093-11-2017 铁氧体磁芯. 表面不规则性的尺寸和极限指南. 第11部分:电源应用用EC -核心(IEC 51 / 1180 / CD:2017)
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 11: EC-cores for use in power supply applications (IEC 51/1180/CD:2017)
This document specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EC-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, and gives guidelines on allowable limits of surface irregularities applicable to EC-cores.