BS EN IEC 60404-16:2018
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Magnetic materials – Methods of measurement of the magnetic properties of Fe-based amorphous strip by means of a single sheet tester
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 32 |
This part of IEC 60404 is applicable to Fe-based amorphous strips specified in IEC 60404-8- 11 for the measurement of AC magnetic properties at frequencies up to 400 Hz.
The object of this part is to define the general principles and technical details of the measurement of the magnetic properties of Fe-based amorphous strips by means of a single sheet tester.
The single sheet tester is applicable to test specimens obtained from Fe-based amorphous strips of any quality. The AC magnetic characteristics are determined for a sinusoidal induced voltage, for specified peak values of magnetic polarization and for a specified frequency.
The measurements are made at an ambient temperature of (23 ± 5) °C on test specimens which have first been demagnetized.
NOTE 1 The single sheet tester specified in this document is appropriate for other materials which have magnetic properties and physical characteristics similar to those of Fe-based amorphous strip, such as nano-crystalline soft magnetic strip. The single sheet tester for electrical steel sheets is specified in IEC 60404-3.
NOTE 2 Throughout this document the term “magnetic polarization” is used as described in IEC 60050-121. In some standards of the IEC 60404 series, the term “magnetic flux density” is used.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 7 | English CONTENTS |
| 9 | FOREWORD |
| 11 | INTRODUCTION |
| 12 | 1 Scope 2 Normative references 3 Terms and definitions |
| 13 | 4 General principles 4.1 Principle of the method Figures Figure 1 – Schematic diagram of the test apparatus |
| 14 | 4.2 Test specimen 4.3 Test apparatus 4.3.1 General Figure 2 – Circuit of the wattmeter method with H coil mode |
| 15 | 4.3.2 Yoke 4.3.3 Windings Figure 3 – Yoke dimensions |
| 16 | 4.3.4 Air flux compensation 4.3.5 Magnetic shielding 4.4 Power supply |
| 17 | 4.5 Measuring instruments 4.6 Digital sampling technique Figure 4 – Circuit of the wattmeter method with H coil mode adoptingthe digital sampling technique |
| 18 | 5 Measurement procedure 5.1 Principle of measurement 5.2 Preparation of measurement |
| 19 | 5.3 Adjustment of power supply 6 Determination of characteristics 6.1 Determination of the magnetic polarization |
| 20 | 6.2 Determination of the magnetic field strength 6.3 Determination of the specific total loss |
| 21 | 6.4 Determination of the specific apparent power 7 Reproducibility |
| 22 | Annex A (informative) Requirements of the single sheet tester for Fe-based amorphous strip A.1 Shape of test specimen A.2 H coil method A.3 Yoke A.4 Wirings |
| 23 | A.5 Non-inductive precision resistor A.6 Magnetic shielding A.7 Method for checking the stability of the installed H coil from time to time |
| 24 | Annex B (informative) Digital sampling technique for the determination of the magnetic properties and numerical air flux compensation B.1 General B.2 Technical details and requirements |
| 27 | B.3 Calibration aspects B.4 Numerical air flux compensation |
| 29 | Annex C (informative) Sinusoidal waveform control of the magnetic polarization by digital means |
| 31 | Bibliography |
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BS EN IEC 60404-16:2018
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