IEC 60401-3:2015

IEC 60401-3 ®
Edition 2.0 2015-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Terms and nomenclature for cores made of magnetically soft ferrites –
Part 3: Guidelines on the format of data appearing in manufacturers catalogues
of transformer and inductor cores

Termes et nomenclature pour noyaux en matériaux ferrites magnétiquement
doux –
Partie 3: Lignes directrices relatives aux formats des données figurant dans les
catalogues des fabricants de noyaux pour transformateurs et inductances

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IEC 60401-3 ®
Edition 2.0 2015-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Terms and nomenclature for cores made of magnetically soft ferrites –

Part 3: Guidelines on the format of data appearing in manufacturers catalogues

of transformer and inductor cores

Termes et nomenclature pour noyaux en matériaux ferrites magnétiquement

doux –
Partie 3: Lignes directrices relatives aux formats des données figurant dans les

catalogues des fabricants de noyaux pour transformateurs et inductances

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.100.10 ISBN 978-2-8322-3029-9

– 2 – IEC 60401-3:2015 © IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Measuring methods . 6
4 Table of material properties and measuring conditions . 6
5 Integrity of value . 7
6 Reliability . 9
Annex A (informative) Breakdown voltage test for insulated ring cores – Measurement
techniques . 11
A.1 Method A . 11
A.2 Method B . 11
A.2.1 General. 11
A.2.2 Method B 1 . 11
A.2.3 Method B 2 . 12
A.2.4 Method B 3 . 12
A.3 Notes on voltage breakdown testing . 13
Bibliography . 14

Figure A.1 – Method A: measurement principle . 11
Figure A.2 – Method B 1: Measurement principle . 12
Figure A.3 – Method B 2: Measurement principle . 12
Figure A.4 – Method B 3: Measurement principle . 13

Table 1 – Rules for property values given in Table 2 . 7
Table 2 – Property values and measuring conditions (1 of 2) . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TERMS AND NOMENCLATURE FOR CORES MADE
OF MAGNETICALLY SOFT FERRITES –

Part 3: Guidelines on the format of data appearing in manufacturers
catalogues of transformer and inductor cores

FOREWORD
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International Standard IEC 60401-3 has been prepared IEC technical committee 51: Magnetic
components and ferrite materials.
This second edition cancels and replaces the first edition published in 2003. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of reliability in Clause 6.

– 4 – IEC 60401-3:2015 © IEC 2015
The text of this standard is based on the following documents:
FDIS Report on voting
51/1106/FDIS 51/1121/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 2.
A list of all parts in the IEC 60401 series, published under the general title Terms and
nomenclature for cores made of magnetically soft ferrites, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch"
...