磁性材料.第3部分:用单片试验机测量电工钢带和薄板磁性的方法

[中文适用范围]： 本部分 IEC 60404 适用于测量取向和非取向电工钢带和钢板在工频下的交流磁性能。本文件的目的是通过单片测试仪（SST）定义电工钢带和钢板磁性能测量的一般原则和技术细节。单片测试仪适用于从任何等级的电工钢带和钢板上取得的测试样品。交流磁特性是针对正弦感应电压、指定的磁极化峰值、特定的磁场强度峰值和指定频率确定的。测量在环境温度 (23 ± 5)°C 下进行，测试样品首先经过消磁处理。 [外文原描述]： IEC 60404-3:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its 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.