BS EN 60404-2-1998+A1-2008 磁性材料.爱普斯坦框架法测量电气用钢板材和带材磁性能的方法

标准号：BS EN 60404-2-1998+A1-2008
中文标准名称：磁性材料.爱普斯坦框架法测量电气用钢板材和带材磁性能的方法
英文标准名称：Magnetic materials — Part 2: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame
标准类型：L19
发布日期：1996/9/15 12:00:00
实施日期：1996/9/15 12:00:00
中国标准分类号：L19
国际标准分类号：29.030
引用标准：IEC 60050-221;IEC 60404-4;IEC 60404-8-3;IEC 60404-8-4;IEC 60404-8-7;IEC 60404-10;IEC 60404-13
适用范围：This part of IEC 404 is applicable to grain orientedand non-oriented electrical sheet and strip for a.c.measurements of magnetic properties atfrequencies up to 400 Hz and for d.c. magneticmeasurements.The object of this part is to define the generalprinciples and the technical details of themeasurement of the magnetic properties ofelectrical steel sheet and strip by means of anEpstein frame.The Epstein frame is applicable to test specimensobtained from electrical steel sheets and strips ofany grade. The a.c. magnetic characteristics aredetermined for sinusoidal induced voltages, forspecified peak values of magnetic polarization andfor a specified frequency.The measurements are to be made at an ambienttemperature of (23 ± 5) °C on test specimens whichhave first been demagnetized.Measurements at higher frequencies are to be madein accordance with IEC 404-10.NOTE Throughout this standard the term “magneticpolarization” is used as defined in IEC 50(221). In somestandards of the IEC 404 series, the term “magnetic flux density”was used.