BS EN 60404-5:2015 – TC:2020 Edition
$186.33
Tracked Changes. Magnetic materials – Permanent magnet (magnetically hard) materials. Methods of measurement of magnetic properties
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 53 |
IEC 60404-5:2015 is available as /2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60404-5:2015 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. This edition includes the following significant technical changes with respect to the previous edition: – adaption of the measurement methods and test conditions to newly introduced magnetically hard materials with coercivity values HcJ higher than 2 MA/m; – update of the temperature conditions to allow the measurement of new materials with high temperature coefficients.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 32 | Foreword Endorsement notice |
| 33 | Annex ZA (normative) Normative references to international publications with their corresponding European publications |
| 34 | English CONTENTS |
| 35 | FOREWORD |
| 37 | INTRODUCTION |
| 38 | 1 Scope 2 Normative references 3 Terms and definitions 4 Electromagnet and conditions for magnetization 4.1 General |
| 39 | Figures Figure 1 – Demagnetization curve showing (BH)max point |
| 40 | 4.2 Geometrical conditions 4.3 Electromagnetic conditions Figure 2 – Schematic diagram of electromagnet |
| 41 | 5 Test specimen |
| 42 | 6 Determination of the magnetic flux density 7 Determination of the magnetic polarization |
| 43 | 8 Measurement of the magnetic field strength |
| 44 | 9 Determination of the demagnetization curve 9.1 General 9.2 Principle of determination of the demagnetization curve, test specimen magnetized in the electromagnet |
| 45 | 9.3 Principle of determination of the demagnetization curve, test specimen magnetized in a superconducting coil or pulse magnetizer Figure 3 – Measuring circuit (schematic) |
| 46 | 10 Determination of the principal characteristics 10.1 Remanent flux density 10.2 (BH)max product 10.3 Coercivities HcB and HcJ 10.4 Determination of the recoil line and the recoil permeability |
| 47 | 11 Reproducibility 12 Test report Figure 4 – Demagnetization curve and recoil loop Tables Table 1 – Reproducibility of the measurement of the magnetic characteristics of permanent magnet materials |
| 49 | Annex A (normative) Influence of the air-gap between the test specimen and the pole pieces Figure A.1 – Air-gap Table A.1 – d/l ratios |
| 50 | Annex B (informative) Influence of the ambient temperature on measurement results Table B.1 – Temperature coefficients of Br and HcJ of permanent magnet materials |
| 51 | Bibliography |
