IEC 63182-3:20 21规定了由金属磁粉制成的E型铁芯的机械互换性的重要尺寸、与它们一起使用的线圈成型机的基本尺寸以及在涉及它们的计算中使用的有效参数值，并给出了适用于E型铁芯的表面不规则性允许限值的指南。 本文件是在磁粉芯供应商和用户之间关于表面不规则性的谈判中有用的规范。

IEC 63182-3:2021 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of E-cores made of metallic magnetic powder, the essential dimensions of coil formers to be used with them as well as the effective parameter values to be used in calculations involving them, and gives guidelines on allowable limits of surface irregularities applicable to E-cores.
This document is a specification useful in the negotiations between magnetic powder core suppliers and users about surface irregularities.