EN 62044-3:2001

SLOVENSKI STANDARD
01-september-2002
Cores made of soft magnetic materials - Measuring methods - Part 3: Magnetic
properties at high excitation level (IEC 62044-3:2000)
Cores made of soft magnetic materials - Measuring methods -- Part 3: Magnetic
properties at high excitation level
Kerne aus weichmagnetischen Materialien - Messverfahren -- Teil 3: Messungen der
magnetischen Eigenschaften im Leistungsapplikationsbereich
Noyaux en matériaux magnétiques doux - Méthodes de mesure -- Partie 3: Propriétés
magnétiques à niveau élevé d'excitation
Ta slovenski standard je istoveten z: EN 62044-3:2001
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
29.100.10 Magnetne komponente Magnetic components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62044-3
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2001
ICS 29.030; 29.100.10
English version
Cores made of soft magnetic materials - Measuring methods
Part 3: Magnetic properties at high excitation level
(IEC 62044-3:2000)
Noyaux en matériaux magnétiques doux - Kerne aus weichmagnetischen
Méthodes de mesure Materialien - Messverfahren
Partie 3: Propriétés magnétiques à niveau Teil 3: Messungen der magnetischen
élevé d'excitation Eigenschaften im
(CEI 62044-3:2000) Leistungsapplikationsbereich
(IEC 62044-3:2000)
This European Standard was approved by CENELEC on 2001-03-01. 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, 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
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62044-3:2001 E
Foreword
The text of document 51/573/FDIS, future edition 1 of IEC 62044-3, prepared by IEC TC 51, Magnetic
components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as EN 62044-3 on 2001-03-01.
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) 2001-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-03-01
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 to E are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62044-3:2000 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 62044-3:2001
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 60050-221 1990 International electrotechnical vocabulary--
Chapter 221: Magnetic materials and
components
A1 1993 - -
A2 1999 - -
IEC 60205 1966 Calculation of the effective parameters--
of magnetic piece parts
IEC 60367-1 1982 Cores for inductors and transformers for--
telecommunications
Part 1: Measuring methods
IEC 60401 1993 Ferrite materials - Guide on the format--
of data appearing in manufacturers'
catalogues of transformer and inductor
cores
IEC 60404-8-6 1999 Magnetic materials --
Part 8-6: Specifications for individual
materials - Soft magnetic metallic
materials
IEC 61332 1995 Soft ferrite material classification EN 61332 1997

NORME
CEI
INTERNATIONALE IEC
62044-3
INTERNATIONAL
Première édition
STANDARD
First edition
2000-12
Noyaux en matériaux magnétiques doux –
Méthodes de mesure –
Partie 3:
Propriétés magnétiques à niveau élevé d'excitation
Cores made of soft magnetic materials –
Measuring methods –
Part 3:
Magnetic properties at high excitation level
© IEC 2000 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
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

62044-3 © IEC:2000 – 3 –
CONTENTS
Page
FOREWORD . 5
Clause
1 Scope . 9
2 Normative references. 9
3 Terms, definitions and symbols . 11
3.1 Definitions . 11
3.2 Symbols. 13
4 General precautions for measurements at high excitation level . 15
4.1 General statements. 15
4.2 Measuring coil . 15
4.3 Mounting of cores consisting of more than one part . 17
4.4 Measuring equipment. 19
5 Specimens . 23
6 Measuring procedures . 23
6.1 General procedure. 23
6.2 Measuring method for the (effective) amplitude permeability. 25
6.3 Measuring methods for the power loss. 29
7 Information to be stated . 33
8 Test report . 35
Annex A (informative) Basic circuits and related equipment for the measurement
of amplitude permeability . 37
Annex B (informative) Root-mean-square method for the measurement of power loss –
Example of a circuit and related procedure. 41
Annex C (informative) Multiplying methods for the measurement of power loss –
Basic circuits and related measurement procedures . 47
Annex D (informative) Reflection method for the measurement of power loss –
Basic circuit and related measurement procedures. 55
Annex E (informative) Calorimetric measurement methods for the measurement
of power loss. 59

62044-3 © IEC:2000 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CORES MADE OF SOFT MAGNETIC MATERIALS –
MEASURING METHODS –
Part 3: Magnetic properties at high excitation level
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
with the IEC also participate in this preparation. The 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 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 62044-3 has been prepared by IEC technical committee 51:
Magnetic components and ferrite materials.
The text of this standard is based on the following documents:
FDIS Report on voting
51/573/FDIS 51/583/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annexes A, B, C, D, and E are for information only.
IEC 62044, presented under the general title Cores made of soft magnetic materials –
Measuring methods, will include the following parts:
Part 1: Generic specification (under consideration)
Part 2: Magnetic properties at low excitation level (under consideration)
Part 3: Magnetic properties at high excitation level
Part 4: Non-magnetic properties (under consideration)

62044-3 © IEC:2000 – 7 –
Part 3 is the first to be published. IEC 60367-1 and IEC 60367-2 will be cancelled after parts
1, 2 and 3 of IEC 62044 are published.
This standard cancels and replaces 11.2 and annex J of IEC 60367-1. The remaining clauses
of IEC 60367-1 will be replaced by IEC 62044-1 and IEC 62044-2.
The committee has decided that the contents of this publication will remain unchanged
until 2006. At this date, the publication will be
 reconfirmed;
 withdrawn;
 replaced by a revised edition, or
 amended.
62044-3 © IEC:2000 – 9 –
CORES MADE OF SOFT MAGNETIC MATERIALS –
MEASURING METHODS –
Part 3: Magnetic properties at high excitation level
1 Scope
This standard provides measuring methods for power loss and amplitude permeability of
magnetic cores forming the closed magnetic circuits intended for use at high excitation levels
in inductors, chokes, transformers and similar devices for power electronics applications.
The methods given in this standard can cover the measurement of magnetic properties for
frequencies ranging practically from d.c. to 10 MHz, and even possibly higher, for the
calorimetric and reflection methods. The applicability of the individual methods to specific
frequency ranges is dependent on the level of accuracy that is to be obtained.
The methods in this standard ar
...