IS 18874 : 2024/IEC 60404-8-8 : 2017 Magnetic Materials - Specification for Individual Materials - Thin Electrical Steel Strip and Sheet for Use at Medium Frequencies

ICS 29.030

MTD 04

NATIONAL FOREWORD

This Indian Standard which is identical to IEC 60404-8-8 : 2017 'Magnetic materials - Part 8-8: Specification for individual materials - Thin electrical steel strip and sheet for use at medium frequencies' issued by the International Electrotechnical Commission (IEC), was adopted by the Bureau of Indian Standards on the recommendation of the Wrought Steel Products Sectional Committee and approval of the Metallurgical Engineering Division Council.

The advancements in electrical steels are primarily focused on enhancing efficiency in electromechanical applications for modern electrical devices and power systems. To be in harmony with the latest developments in the field, the Committee felt a need to formulate a standard on nongrain oriented electrical steel strip and sheet supplied in the finally annealed condition in coils or sheets and intended for the construction of magnetic circuits predominantly used at frequencies in the range from 100 Hz to 10 kHz.

The text of IEC standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions and terminologies are however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'Indian Standard'; and

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.