IEC 60404-11:20 21适用于单面或双面涂层绝缘的电工钢带和钢板。 本文件的目的是定义电工钢带和钢板表面绝缘电阻测量的一般原理和技术细节。 笔记？本试验适用于绝缘涂料应用中的制造和质量控制。 与上一版相比，此版本包括以下重大技术变更: 方法B已被删除，并且通过方法A启用通过每个接触按钮的单独电流的测量； 介绍了用于方法A的测试设备和稳压电路的改进布置“布置B”。 介绍了在试样的相对位置使用两对接触组件的替代布局； 限制:“试样的同一面积不得用于两面试验。”已被删除。

IEC 60404-11:2021 is applicable to electrical steel strip and sheet insulated by coating on one or both sides.
The object of this document is to define the general principles and technical details of the measurement of the surface insulation resistance of electrical steel strip and sheet.
NOTE？This test is suitable for manufacturing and quality control in the application of insulation coatings.
This edition includes the following significant technical changes with respect to the previous edition:

1. Method B has been deleted and the measurement of individual currents through each contact button is enabled by Method A;
2. an improved arrangement of the test apparatus and the voltage stabilizing circuit for Method A, “Arrangement B”, is introduced.
3. an alternative layout using two pairs of contact assemblies in opposing position of the test specimen is introduced;
4. the restriction: “The same area of the test specimen shall not be used to test both sides.” has been deleted.