IEC 60404-6:2018
(Main)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 100 kHz by the use of ring specimens
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 100 kHz by the use of ring specimens
IEC 60404-6:2018 is available as IEC 60404-6:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60404-6:2018 specifies methods for the measurement of AC magnetic properties of soft magnetic materials, other than electrical steels and soft ferrites, in the frequency range 20 Hz to 100 kHz. The materials covered by this part of IEC 60404 include those speciality alloys listed in IEC 60404-8-6, amorphous and nano-crystalline soft magnetic materials, pressed and sintered and metal injection moulded parts such as are listed in IEC 60404-8-9, cast parts and magnetically soft composite materials. The object of this part is to define the general principles and the technical details of the measurement of the magnetic properties of magnetically soft materials by means of ring methods. For materials supplied in powder form, a ring test specimen is formed by the appropriate pressing method for that material. The measurement of the DC magnetic properties of soft magnetic materials is made in accordance with the ring method of IEC 60404-4. The determinations of the magnetic characteristics of magnetically soft components are made in accordance with IEC 62044-3. This edition includes the following significant technical changes with respect to the previous edition:
a) adaption to modern measurement and evaluation methods, in particular the introduction of the widely spread digital sampling method for the acquisition and evaluation of the measured data;
b) limitation of the frequency range up to 100 kHz;
c) deletion of Clause 7 of the second edition that specified the measurement of magnetic properties using a digital impedance bridge;
d) addition of a new Clause 7 on the measurement of the specific total loss by the wattmeter method, including an example of the application of the digital sampling method;
e) addition of an informative annex on the technical details of the digital sampling technique for the determination of magnetic properties.
The contents of the corrigendum of November 2018 have been included in this copy.
Matériaux magnétiques - Partie 6: Méthodes de mesure des propriétés magnétiques des matériaux métalliques et des matériaux en poudre magnétiquement doux, aux fréquences comprises entre 20 Hz et 100 kHz, sur des éprouvettes en forme de tore
IEC 60404-6:2018 est disponible sous forme de IEC 60404-6:2018 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
IEC 60404-6:2018 spécifie les méthodes à utiliser pour mesurer les propriétés magnétiques en courant alternatif des matériaux magnétiques doux autres que les aciers électriques et les ferrites doux, aux fréquences comprises entre 20 Hz et 100 kHz. Les matériaux couverts par la présente partie de l'IEC 60404 incluent les alliages de spécialité répertoriés dans l'IEC 60404-8-6, les matériaux magnétiques doux amorphes et nanocristallins, les pièces compressées frittées et les pièces moulées par injection de métal répertoriées dans l'IEC 60404-8-9, ainsi que les pièces moulées et les matériaux composites magnétiquement doux. L'objet de la présente partie est de définir les principes généraux et les détails techniques de la mesure des propriétés magnétiques des matériaux magnétiquement doux au moyen des méthodes du tore. Pour les matériaux livrés sous forme de poudre, une éprouvette d'essai en forme d'anneau est réalisée à l'aide de la méthode de compression appropriée pour le matériau considéré. La mesure des propriétés magnétiques en courant continu des matériaux magnétiquement doux est réalisée selon la méthode du tore de l'IEC 60404-4. Les déterminations des propriétés magnétiques des composants magnétiquement doux sont réalisées selon l'IEC 62044-3. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) adaptation aux méthodes modernes de mesure et d'évaluation, notamment l'introduction de la méthode d'échantillonnage numérique largement répandue pour l'acquisition et l'évaluation des données mesurées;
b) limitation de la gamme de fréquences à 100 kHz;
c) suppression de l'Article 7 de la deuxième édition qui spécifiait la mesure des propriétés magnétiques à l'aide d'un pont d'impédance numérique;
d) ajout d'un nouvel Article 7 sur la mesure des pertes totales massiques par la méthode du wattmètre, y compris un exemple d'application de la méthode d'échantillonnage numérique;
e) ajout d'une annexe informative concernant les détails de la technique d'échantillonnage numérique pour déterminer les propriétés magnétiques du matériau.
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IEC 60404-6 ®
Edition 3.0 2018-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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 200 100 kHz
by the use of ring specimens
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IEC 60404-6 ®
Edition 3.0 2018-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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 200 100 kHz
by the use of ring specimens
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 17.220.20; 29.030 ISBN 978-2-8322-5754-8
– 2 – IEC 60404-6:2018 RLV © IEC 2018
CONTENTS
FOREWORD . 4
INTRODUCTION .
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General principles of measurement . 8
4.1 Principle of the ring method . 8
4.2 Test specimen . 8
4.3 Windings . 9
5 Temperature measurements . 10
6 Measurement of magnetic the relative amplitude permeability
and the AC magnetization curve using the voltmeter-ammeter method . 10
6.1 Introduction General . 10
6.2 Apparatus and connections . 10
6.3 Waveform of induced secondary voltage or magnetizing current . 11
6.4 Determination of characteristics . 12
6.4.1 Determination of the peak value of the magnetic field strength . 12
6.4.2 Determination of the peak value of the magnetic flux density . 13
6.4.3 Determination of the r.m.s. amplitude permeability and the relative
amplitude permeability . 13
6.4.4 Determination of the AC magnetization curve . 14
7 Measurement of the specific total loss by the wattmeter method . 14
7.1 Principle of measurement. 14
7.2 Voltage measurement . 16
7.2.1 Average type voltmeter, V . 16
7.2.2 R.M.S. type voltmeter, V . 16
7.3 Power measurement . 16
7.4 Procedure for the measurement of the specific total loss . 16
7.5 Determination of the specific total loss . 16
Measurement of magnetic properties using a digital impedance bridge .
Principle of measurement.
Apparatus .
Procedure .
Determination of the relative a.c. inductance permeability .
Determination of the specific total loss .
Measurement of magnetic properties using digital methods .
Introduction .
Apparatus and connections .
Magnetizing current waveform .
Magnetizing winding .
Determination of the magnetic field strength .
Determination of the magnetic flux density .
Determination of the relative a.c. permeability .
Determination of a.c. magnetization curve .
Determination of the specific total loss .
8 Uncertainties . 22
9 Test report . 22
Annex A (informative) Guidance on requirements for windings and instrumentation in
order to minimise additional losses . 24
A.1 Introduction General . 24
A.2 Reduction of additional losses . 24
Annex B (informative) Digital sampling technique for the determination of magnetic
properties and numerical air flux compensation . 25
B.1 General . 25
B.2 Technical details and requirements . 25
B.3 Calibration aspects . 29
B.4 Numerical air flux compensation . 29
Annex C (informative) Sinusoidal waveform control by digital means . 30
Bibliography . 31
Figure – Circuit of the digital impedance bridge method .
Figure – Circuit of the digital method .
Figure 1 – Circuit of the ring method measurement apparatus. 11
Figure 2 – Circuit of the conventional analogue wattmeter method (also representing
the metrological principle of the digital wattmeter method) . 15
Figure 3 – The wattmeter method when connected with the digital sampling technique
(example of circuit) . 15
– 4 – IEC 60404-6:2018 RLV © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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 200 100 kHz by the use of ring specimens
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
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IEC 60404-6 ®
Edition 3.1 2021-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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 100 kHz by
the use of ring specimens
Matériaux magnétiques –
Partie 6: Méthodes de mesure des propriétés magnétiques des matériaux
métalliques et des matériaux en poudre magnétiquement doux, aux fréquences
comprises entre 20 Hz et 100 kHz, sur des éprouvettes en forme de tore
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International Standards for all electrical, electronic and related technologies.
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IEC 60404-6 ®
Edition 3.1 2021-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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 100 kHz by
the use of ring specimens
Matériaux magnétiques –
Partie 6: Méthodes de mesure des propriétés magnétiques des matériaux
métalliques et des matériaux en poudre magnétiquement doux, aux fréquences
comprises entre 20 Hz et 100 kHz, sur des éprouvettes en forme de tore
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20; 29.030 ISBN 978-2-8322-4184-4
IEC 60404-6 ®
Edition 3.1 2021-07
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
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 100 kHz by
the use of ring specimens
Matériaux magnétiques –
Partie 6: Méthodes de mesure des propriétés magnétiques des matériaux
métalliques et des matériaux en poudre magnétiquement doux, aux fréquences
comprises entre 20 Hz et 100 kHz, sur des éprouvettes en forme de tore
– 2 – IEC 60404-6:2018+AMD1:2021 CSV
© IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General principles of measurement . 7
4.1 Principle of the ring method . 7
4.2 Test specimen . 7
4.3 Windings . 8
5 Temperature measurements . 9
6 Measurement of the relative amplitude permeability and the AC magnetization
curve . 9
6.1 General . 9
6.2 Apparatus and connections . 9
6.3 Waveform of induced secondary voltage or magnetizing current . 10
6.4 Determination of characteristics . 11
6.4.1 Determination of the peak value of the magnetic field strength . 11
6.4.2 Determination of the peak value of the magnetic flux density . 12
6.4.3 Determination of the r.m.s. amplitude permeability and the relative
amplitude permeability . 12
6.4.4 Determination of the AC magnetization curve . 13
7 Measurement of the specific total loss by the wattmeter method . 13
7.1 Principle of measurement. 13
7.2 Voltage measurement . 15
7.2.1 Average type voltmeter . 15
7.2.2 R.M.S. type voltmeter . 15
7.3 Power measurement . 15
7.4 Procedure for the measurement of the specific total loss . 15
7.5 Determination of the specific total loss . 15
8 Uncertainties . 16
9 Test report . 16
Annex A (informative) Guidance on requirements for windings and instrumentation in
order to minimise additional losses . 17
A.1 General . 17
A.2 Reduction of additional losses . 17
Annex B (informative) Digital sampling technique for the determination of magnetic
properties and numerical air flux compensation . 18
B.1 General . 18
B.2 Technical details and requirements . 18
B.3 Calibration aspects . 22
B.4 Numerical air flux compensation . 22
Annex C (informative) Sinusoidal waveform control by digital means . 23
Bibliography . 24
Figure 1 – Circuit of the measurement apparatus . 10
© IEC 2021
Figure 2 – Circuit of the conventional analogue wattmeter method (also representing
the metrological principle of the digital wattmeter method) . 14
Figure 3 – The wattmeter method when connected with the digital sampling technique
(example of circuit) . 14
– 4 – IEC 60404-6:2018+AMD1:2021 CSV
© IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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 100 kHz by the use of ring specimens
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent po
...
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