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

Magnetic materials — Part 2: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame

标准号

BS EN 60404-2-1998+A1-2008

发布日期

1996年09月15日

实施日期

1996年09月15日

废止日期

无

中国标准分类号

L19

国际标准分类号

29.030

发布单位

GB-BSI

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

被代替标准

BS 6404 Pt.2-1985 94/341190 DC-1994 BS EN 60404-2-1998

适用范围

This part of IEC 404 is applicable to grain oriented and non-oriented electrical sheet and strip for a.c. measurements of magnetic properties at frequencies up to 400 Hz and for d.c. magnetic measurements. The object of this part is to define the general principles and the technical details of the measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame. The Epstein frame is applicable to test specimens obtained from electrical steel sheets and strips of any grade. The a.c. magnetic characteristics are determined for sinusoidal induced voltages, for specified peak values of magnetic polarization and for a specified frequency. The measurements are to be made at an ambient temperature of (23 ± 5) °C on test specimens which have first been demagnetized. Measurements at higher frequencies are to be made in accordance with IEC 404-10. NOTE Throughout this standard the term “magnetic polarization” is used as defined in IEC 50(221). In some standards of the IEC 404 series, the term “magnetic flux density” was used.

BS EN 60404-2-1998+A1-2008系列标准