IEC 60404-3:20 22作为IEC 60404-3:20 22 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 60404-3:20 22适用于晶粒取向和非取向电工钢带和板材，用于测量工频下的交流磁性能。本文件的目的是定义通过单片测试仪（SST）测量电工钢带和薄板磁性能的一般原理和技术细节。与上一版相比，此版本包括以下重大技术变更: -修订了附件A。附录A中增加了磁轭层压阻力的测定方法； -2010年合并版本的附件B提及使用Epstein方法校准SST。它被取消了； -修订了附件B（新）、附件C和附件D，仅供参考； -考虑到P级和R级的新情况，对附件C进行了修改； -修订了附件D，增加了关于数值气流补偿的D.4条。

IEC 60404-3:2022 is available as IEC 60404-3:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60404-3:2022 is applicable to grain-oriented and non-oriented electrical steel strip and sheet for measurement of AC magnetic properties at power frequencies. The object of this document is to define the general principles and the technical details of the measurement of the magnetic properties of electrical steel strip and sheet by means of a single sheet tester (SST). This edition includes the following significant technical changes with respect to the previous edition:
- Annex A was revised. The method of determining the yokes’ lamination resistance was added to Annex A;
- Annex B of the consolidated version of 2010 referred to calibration of the SST using the Epstein method. It was cancelled;
- Annex B (new), Annex C and Annex D were revised, they are for information only;
- Annex C was modified taking account of the new situation regarding P and R grades;
- Annex D was amended by addition of Clause D.4 on the numerical air flux compensation.