EN 60404-6:2003
Superseded
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Magnetic materials - Part 6: Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies in the range 20 Hz to 200 kHz by the use of ring specimens
04-02-2022
11-09-2003
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 General principles of measurement
3.1 Test specimen
3.2 Windings
4 Temperature measurements
5 Measurement of magnetic permeability and magnetization
curve using the voltmeter-ammeter method
5.1 Introduction
5.2 Apparatus and connections
5.3 Determination of magnetic field strength
5.4 Determination of the magnetic flux density
5.5 Determination of the r.m.s. amplitude permeability
and the relative amplitude permeability
5.6 Determination of magnetization curve
6 Measurement of specific total loss by the wattmeter
method
6.1 Principle of measurement
7 Measurement of magnetic properties using a digital
impedance bridge
7.1 Principle of measurement
7.2 Apparatus
7.3 Procedure
7.4 Determination of the relative a.c. inductance
permeability
7.5 Determination of the specific total loss
8 Measurement of magnetic properties using digital
methods
8.1 Introduction
8.2 Apparatus and connections
8.3 Magnetizing current waveform
8.4 Magnetizing winding
8.5 Determination of the magnetic field strength
8.6 Determination of the magnetic flux density
8.7 Determination of the relative a.c. permeability
8.8 Determination of a.c. magnetization curve
8.9 Determination of the specific total loss
9 Uncertainties
10 Test report
Annex A (informative) Guidance on requirements for windings
and instrumentation in order to minimise additional
losses
Annex B (informative) Sinusoidal waveform control by digital
means
Bibliography
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