EN 60404-6:2003

SLOVENSKI SIST EN 60404-6:2004

STANDARD
julij 2004
Magnetic materials - Part 6: Methods of measurement of the magnetic properties of
magnetically soft metallic and powder materials at frequencies in the range of 20 Hz
to 200 kHz by the use of ring specimens (IEC 60404-6:2003)
ICS 17.220.20; 29.030 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60404-6
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2003

ICS 17.220.20; 29.030
English version
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
(IEC 60404-6:2003)
Matériaux magnétiques Magnetische Werkstoffe
Partie 6: Méthodes de mesure Teil 6: Verfahren zur Messung der
des propriétés magnétiques magnetischen Eigenschaften
des matériaux métalliques weichmagnetischer und pulverförmiger
et des matériaux en poudre, Werkstoffe bei Frequenzen im Bereich
magnétiquement doux, aux fréquences 20 Hz bis 200 kHz mit Hilfe von
comprises entre 20 Hz et 200 kHz, Ringproben
sur des éprouvettes en forme de tore (IEC 60404-6:2003)
(CEI 60404-6:2003)
This European Standard was approved by CENELEC on 2003-09-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60404-6:2003 E
Foreword
The text of document 68/271/FDIS, future edition 2 of IEC 60404-6, prepared by IEC TC 68, Magnetic
alloys and steels, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC
as EN 60404-6 on 2003-09-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2004-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-09-01

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A and B are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60404-6:2003 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 62044 NOTE Harmonized in the series EN 62044 (not modified).
__________
- 3 - EN 60404-6:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 62044-3 2000 Cores made of soft magnetic materials - EN 62044-3 2001
Measuring methods
Part 3: Magnetic properties at high
excitation level
IEC 60404-2 1996 Magnetic materials EN 60404-2 1998
Part 2: Methods of measurement of the
magnetic properties of electrical steel
sheet and strip by means of an Epstein
frame
IEC 60404-4 1995 Part 4: Methods of measurement of d.c. EN 60404-4 1997
magnetic properties of magnetically soft
materials
A1 2000 A1 2002
IEC 60404-8-6 1999 Part 8-6: Specifications for individual - -
materials - Soft magnetic metallic
materials
IEC 60404-8-9 1994 Part 8: Specification for individual - -
materials
Section 9: Standard specification for
sintered soft magnetic materials

ISO/IEC 1993 Guide to the expression of uncertainty - -
in measurement
NORME CEI
INTERNATIONALE IEC
60404-6
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2003-06
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 200 kHz, sur des
éprouvettes en forme de tore
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
© IEC 2003 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

60404-6 © IEC:2003 – 3 –
CONTENTS
FOREWORD . 5
INTRODUCTION .9
1 Scope .11
2 Normative references.11
3 General principles of measurement .13
3.1 Test specimen .13
3.2 Windings .15
4 Temperature measurements .15
5 Measurement of magnetic permeability and magnetization curve using the
voltmeter-ammeter method .17
5.1 Introduction.17
5.2 Apparatus and connections .17
5.3 Determination of magnetic field strength.19
5.4 Determination of the magnetic flux density .21
5.5 Determination of the r.m.s. amplitude permeability and the relative
amplitude permeability .21
5.6 Determination of magnetization curve.23
6 Measurement of specific total loss by the wattmeter method.23
6.1 Principle of measurement.23
7 Measurement of magnetic properties using a digital impedance bridge .25
7.1 Principle of measurement.25
7.2 Apparatus .27
7.3 Procedure.27
7.4 Determination of the relative a.c. inductance permeability.29
7.5 Determination of the specific total loss .29
8 Measurement of magnetic properties using digital methods .29
8.1 Introduction.29
8.2 Apparatus and connections .31
8.3 Magnetizing current waveform.31
8.4 Magnetizing winding.31
8.5 Determination of the magnetic field strength.31
8.6 Determination of the magnetic flux density .33
8.7 Determination of the relative a.c. permeability .33
8.8 Determination of a.c. magnetization curve .33
8.9 Determination of the specific total loss .33
9 Uncertainties.35
10 Test report .35
Annex A (informative) Guidance on requirements for windings and instrumentation
in order to minimise additional losses .41
Annex B (informative) Sinusoidal waveform control by digital means .43
Bibliography .45

60404-6 © IEC:2003 – 5 –
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 kHz by the use of ring specimens
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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
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for Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions or agreements of the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60404-6 has been prepared by IEC technical committee 68:
Magnetic alloys and steels.
This second edition cancels and replaces the first edition published in 1986 and constitutes
a technical revision.
The scope of the first edition has been extended to include all magnetically soft materials
except ferrites. Chapter 1 of the first edition relating to d.c. meas
...