BS EN 60404-5:2015

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Electromagnet and conditions for magnetization
5 Test specimen
6 Determination of the magnetic flux density
7 Determination of the magnetic polarization
8 Measurement of the magnetic field strength
9 Determination of the demagnetization curve
10 Determination of the principal characteristics
11 Reproducibility
12 Test report
Annex A (normative) - Influence of the air-gap between
        the test specimen and the pole pieces
Annex B (informative) - Influence of the ambient temperature
        on measurement results
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

Describes the method of measurement of the magnetic flux density, magnetic polarization and the magnetic field strength and also to determine the demagnetization curve and recoil line of permanent magnet materials, such as those specified in lEC 60404-8-1 [1]1, the properties of which are presumed homogeneous throughout their volume.

The purpose of this part of IEC60404 is to define the method of measurement of the magnetic flux density, magnetic polarization and the magnetic field strength and also to determine the demagnetization curve and recoil line of permanent magnet materials, such as those specified in lEC6040481 [1] ¹ , the properties of which are presumed homogeneous throughout their volume.

The performance of a magnetic system is not only dependent on the properties of the permanent magnet material but also on the dimensions of the system, the air-gap and other elements of the magnetic circuit. The methods described in this part of IEC60404 refer to the measurement of the magnetic properties in a closed magnetic circuit.