IEC 60401-1:2020
(Main)Terms and nomenclature for cores made of magnetically soft ferrites - Part 1: Terms used for physical irregularities and reference of dimensions
Terms and nomenclature for cores made of magnetically soft ferrites - Part 1: Terms used for physical irregularities and reference of dimensions
IEC 60401-1:2020 provides a nomenclature of the most frequent surface, bulk and shape irregularities relevant to cores made of soft ferrites (magnetic oxides). Most irregularities are graphically exemplified as visual aids. A general recommendation is also given in Annex A for a consistent scheme for specifying the exact location of the irregularity, combining a general name for the location with more detailed qualifiers of the specified location. This document can also be useful as a terminology reference when preparing technical documentation, irregularity inspection specifications, etc. This document also presents a method for defining the designation nomenclature for the major physical attributes of soft ferrite core shapes. The purpose of this document is to facilitate uniform usage of dimensional characters by manufacturers, specifiers, and users when describing core dimensions on drawings, in tables, and on catalogue specification sheets. This second edition cancels and replaces the first edition of IEC 60401-1 published in 2002 and the second edition of IEC 60401-2 published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous editions of IEC 60401-1 and IEC 60401-2:
- added the surface irregularity term “pores” in 4.3.1.6;
- added the surface irregularity term “scratch” in 4.3.6.3;
- removed the surface irregularity term “crater” in 4.1.5 of IEC 60401-1: 2002;
- removed the bulk irregularity terms “superpores” in 5.1, “inclusions” in 5.2, “internal stratification” in 5.3 and “internal crack” in 5.4 of IEC 60401-1: 2002;
- removed the contents related to “yoke ring cores” in 7.1.3 and 7.4 of IEC 60401-1:2002;
- replaced the surface irregularity term “stratification” with “lamination” in 4.3.4.7;
- replaced the location related terms “upper surface of back” with “bottom surface” and “lower surface of back” with “back surface” in Figure A.1;
- changed Clause 7 of IEC 60401-1:2002 into Annex A.
Termes et nomenclature pour noyaux en matériaux ferrites magnétiquement doux - Partie 1: Termes utilisés pour les irrégularités physiques et références dimensionnelles
L’IEC 60401-1:2020 fournit une nomenclature des irrégularités de surface, de structure interne et de forme les plus fréquentes correspondant aux noyaux en matériaux ferrites doux (oxydes magnétiques). La plupart des irrégularités sont citées en exemple sous forme de graphique, en tant qu'aide visuelle. Une recommandation générale est également fournie à l’Annexe A en vue d'un programme cohérent pour spécifier l'emplacement exact de l'irrégularité, en associant un nom général pour l'emplacement à des qualificatifs plus détaillés de l'emplacement spécifié. Le présent document peut également être utile en tant que référence terminologique lors de l'élaboration de la documentation technique, des spécifications de contrôle des irrégularités, etc.
Le présent document présente également une méthode qui définit la nomenclature de désignation des principaux attributs physiques des formes de noyaux en matériaux ferrites doux. L’objet du présent document est de faciliter l’utilisation uniforme des caractères dimensionnels par les fabricants, les spécificateurs et les utilisateurs lors de la description des dimensions de noyaux dans des schémas, des tableaux et des fiches de spécification de catalogues.
Cette deuxième édition annule et remplace la première édition de l’IEC 60401-1 parue en 2002 et la deuxième édition de l’IEC 60401-2 parue en 2009. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport aux éditions précédentes de l'IEC 60401-1 et de l'IEC 60401-2:
- ajout du terme d'irrégularité de surface "pores" en 4.3.1.6;
- ajout du terme d'irrégularité de surface "rayure" en 4.3.6.3;
- suppression du terme d'irrégularité de surface "cratère" au 4.1.5 de l’IEC 60401-1:2002;
- suppression des termes d'irrégularité de structure interne "superpores" en 5.1, "inclusions" en 5.2, "stratification interne" en 5.3 et "fissures internes" en 5.4 de l’IEC 60401-1:2002;
- suppression du terme lié au contenu "bague de déflexion" au 7.1.3 et au 7.4 de l’IEC 60401-1:2002;
- remplacement du terme d’irrégularité de surface "stratification" par "lamination" (en anglais) en 4.3.4.7;
- remplacement des termes liés à l'emplacement "surface supérieure du fond" par "surface du bas" et "surface inférieure du fond" par "surface du fond" à la Figure A.1;
- modification de l’Article 7 de l’IEC 60401-1:2002 en Annexe A.
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IEC 60401-1 ®
Edition 2.0 2020-04
INTERNATIONAL
STANDARD
Terms and nomenclature for cores made of magnetically soft ferrites –
Part 1: Terms used for physical irregularities and reference of dimensions
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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3, rue de Varembé info@iec.ch
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
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IEC 60401-1 ®
Edition 2.0 2020-04
INTERNATIONAL
STANDARD
Terms and nomenclature for cores made of magnetically soft ferrites –
Part 1: Terms used for physical irregularities and reference of dimensions
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.100.10 ISBN 978-2-8322-8081-2
– 2 – IEC 60401-1:2020 © IEC 2020
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Physical irregularities . 7
4.1 General overview . 7
4.2 General terms for physical irregularities . 8
4.3 Surface irregularities . 8
4.3.1 Chip irregularities . 8
4.3.2 Protruding (convex) irregularities . 10
4.3.3 Edge irregularities . 11
4.3.4 Crack irregularities . 11
4.3.5 Colour irregularities . 13
4.3.6 Machining-related irregularities . 15
4.4 Interior irregularities . 16
4.5 Shape irregularities (deformations) . 16
4.5.1 Non-flat irregularities . 16
4.5.2 Simple geometry irregularities . 18
4.5.3 Grinding related irregularities. 20
4.5.4 Other shape irregularities . 20
5 Reference of dimensions . 21
5.1 General specifications . 21
5.2 Dimension descriptions . 21
5.3 Core illustrations . 22
Annex A (informative) Location related terms . 26
A.1 General . 26
A.2 Surfaces . 26
A.3 Shape . 27
A.4 Specific parts location qualifiers . 27
Figure 1 – Surface chip . 9
Figure 2 – Edge chip . 9
Figure 3 – Corner chip . 9
Figure 4 – Pull-out . 10
Figure 5 – Pores . 10
Figure 6 – Hump . 10
Figure 7 – Attached particle . 10
Figure 8 – Ragged edge . 11
Figure 9 – Flash . 11
Figure 10 – Single-surface narrow crack . 11
Figure 11 – Single-surface broad crack . 12
Figure 12 – Edge narrow crack . 12
Figure 13 – Edge broad crack . 12
Figure 14 – Inner channel crack . 13
Figure 15 – Lamination . 13
Figure 16 – Crazing . 13
Figure 17 – Difference in colour tones. 14
Figure 18 – Discoloration . 14
Figure 19 – Stain . 14
Figure 20 – Crystallite . 14
Figure 21 – Roughness . 15
Figure 22 – Short-ground surface. 15
Figure 23 – Scratch . 15
Figure 24 – Convexity . 16
Figure 25 – Concavity . 16
Figure 26 – Warping . 16
Figure 27 – Deflection-out . 17
Figure 28 – Deflection-in . 17
Figure 29 – Transverse deflection . 17
Figure 30 – Undulation . 18
Figure 31 – Non-parallelism . 18
Figure 32 – Non-perpendicularity . 18
Figure 33 – Non-coplanarity . 18
Figure 34 – Non-circularity . 19
Figure 35 – Ovality . 19
Figure 36 – Non-concentricity of co-planar circles . 19
Figure 37 – Non-concentricity of circles lying on two planes . 20
Figure 38 – Steplike ground surface . 20
Figure 39 – Uneven grinding slant. 20
Figure 40 – Un-matching . 21
Figure 41 – Profile deformation . 21
Figure 42 – Ring-cores . 22
Figure 43 – E-core . 22
Figure 44 – ETD- or EER-core . 23
Figure 45 – EC-core. 23
Figure 46 – Planar E-core . 23
Figure 47 – Planar EL-core . 23
Figure 48 – Planar ER-core . 23
Figure 49 – Plate-core mating planar cores . 23
Figure 50 – EFD-core . 24
Figure 51 – Drum-core . 24
Figure 52 – EP-core . 24
Figure 53 – PQ-core . 24
Figure 54 – Pot-core and half pot-core for inductive proximity switches . 24
Figure 55 – PM-core . 24
Figure 56 – RM-core . 25
Figure 57 – U-core . 25
– 4 – IEC 60401-1:2020 © IEC 2020
Figure 58 – UR-core . 25
Figure 59 – Balun-core .
...
IEC 60401-1 ®
Edition 2.0 2020-04
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Terms and nomenclature for cores made of magnetically soft ferrites –
Part 1: Terms used for physical irregularities and reference of dimensions
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
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committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
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IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
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need further assistance, please contact the Customer Service
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IEC 60401-1 ®
Edition 2.0 2020-04
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Terms and nomenclature for cores made of magnetically soft ferrites –
Part 1: Terms used for physical irregularities and reference of dimensions
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.100.10 ISBN 978-2-8322-8218-2
– 2 – IEC 60401-1:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Physical irregularities . 7
4.1 General overview . 7
4.2 General terms for physical irregularities . 8
4.3 Surface irregularities . 9
4.3.1 Chip irregularities . 9
4.3.2 Protruding (convex) irregularities . 10
4.3.3 Edge irregularities . 11
4.3.4 Crack irregularities . 12
4.3.5 Colour irregularities . 14
4.3.6 Machining-related irregularities . 15
4.4 Interior irregularities . 16
4.5 Shape irregularities (deformations) . 17
4.5.1 Non-flat irregularities . 17
4.5.2 Simple geometry irregularities . 19
4.5.3 Grinding related irregularities. 22
4.5.4 Other shape irregularities . 22
5 Bulk irregularities .
5 Reference of dimensions . 23
5.1 General specifications . 23
5.2 Dimension descriptions . 23
5.3 Core illustrations . 24
Annex A (informative) Location related terms . 28
A.1 General . 28
A.2 Surfaces . 28
A.3 Shape . 29
A.4 Specific parts location qualifiers . 29
Figure 1 – Surface chip . 9
Figure 2 – Edge chip . 9
Figure 3 – Corner chip . 9
Figure 4 – Pull-out . 10
Figure 5 – Pores . 10
Figure 6 – Hump . 11
Figure 7 – Attached particle . 11
Figure 8 – Ragged edge . 11
Figure 9 – Flash . 11
Figure 10 – Single-surface narrow crack . 12
Figure 11 – Single-surface broad crack . 12
Figure 12 – Edge narrow crack . 12
Figure 13 – Edge broad crack . 13
Figure 14 – Inner channel crack . 13
Figure 15 – Lamination . 13
Figure 16 – Crazing . 14
Figure 17 – Difference in colour tones. 14
Figure 18 – Discoloration . 14
Figure 19 – Stain . 15
Figure 20 – Crystallite . 15
Figure 21 – Roughness . 15
Figure 22 – Short-ground surface. 16
Figure 23 – Scratch . 16
Figure 24 – Convexity . 17
Figure 25 – Concavity . 18
Figure 26 – Warping . 18
Figure 27 – Deflection-out . 18
Figure 28 – Deflection-in . 19
Figure 29 – Transverse deflection . 19
Figure 30 – Undulation . 19
Figure 31 – Non-parallelism . 19
Figure 32 – Non-perpendicularity . 20
Figure 33 – Non-coplanarity . 20
Figure 34 – Non-circularity . 20
Figure 35 – Ovality . 21
Figure 36 – Non-concentricity of co-planar circles . 21
Figure 37 – Non-concentricity of circles lying on two planes . 21
Figure 38 – Steplike ground surface . 22
Figure 39 – Uneven grinding slant. 22
Figure 40 – Un-matching . 22
Figure 41 – Profile deformation . 23
Figure 42 – Ring-cores . 24
Figure 43 – E-core . 24
Figure 44 – ETD- or EER-core . 25
Figure 45 – EC-core. 25
Figure 46 – Planar E-core . 25
Figure 47 – Planar EL-core . 25
Figure 48 – Planar ER-core . 25
Figure 49 – Plate-core mating planar cores . 25
Figure 50 – EFD-core . 26
Figure 51 – Drum-core . 26
Figure 52 – EP-core . 26
Figure 53 – PQ-core . 26
Figure 54 – Pot-core and half pot-core for inductive proximity switches . 26
Figure 55 – PM-core . 26
Figure 56 – RM-core . 27
– 4 – IEC 60401-1:2020 RLV © IEC 2020
Figure 57 – U-core . 27
Figure 58 – UR-core .
...
IEC 60401-1 ®
Edition 2.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Terms and nomenclature for cores made of magnetically soft ferrites –
Part 1: Terms used for physical irregularities and reference of dimensions
Termes et nomenclature pour noyaux en matériaux ferrites magnétiquement
doux –
Partie 1: Termes utilisés pour les irrégularités physiques et références
dimensionnelles
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
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once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.
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IEC 60401-1 ®
Edition 2.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Terms and nomenclature for cores made of magnetically soft ferrites –
Part 1: Terms used for physical irregularities and reference of dimensions
Termes et nomenclature pour noyaux en matériaux ferrites magnétiquement
doux –
Partie 1: Termes utilisés pour les irrégularités physiques et références
dimensionnelles
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.100.10 ISBN 978-2-8322-8539-8
– 2 – IEC 60401-1:2020 © IEC 2020
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Physical irregularities . 7
4.1 General overview . 7
4.2 General terms for physical irregularities . 8
4.3 Surface irregularities . 8
4.3.1 Chip irregularities . 8
4.3.2 Protruding (convex) irregularities . 10
4.3.3 Edge irregularities . 11
4.3.4 Crack irregularities . 11
4.3.5 Colour irregularities . 13
4.3.6 Machining-related irregularities . 15
4.4 Interior irregularities . 16
4.5 Shape irregularities (deformations) . 16
4.5.1 Non-flat irregularities . 16
4.5.2 Simple geometry irregularities . 18
4.5.3 Grinding related irregularities. 20
4.5.4 Other shape irregularities . 20
5 Reference of dimensions . 21
5.1 General specifications . 21
5.2 Dimension descriptions . 21
5.3 Core illustrations . 22
Annex A (informative) Location related terms . 26
A.1 General . 26
A.2 Surfaces . 26
A.3 Shape . 27
A.4 Specific parts location qualifiers . 27
Figure 1 – Surface chip . 9
Figure 2 – Edge chip . 9
Figure 3 – Corner chip . 9
Figure 4 – Pull-out . 10
Figure 5 – Pores . 10
Figure 6 – Hump . 10
Figure 7 – Attached particle . 10
Figure 8 – Ragged edge . 11
Figure 9 – Flash . 11
Figure 10 – Single-surface narrow crack . 11
Figure 11 – Single-surface broad crack . 12
Figure 12 – Edge narrow crack . 12
Figure 13 – Edge broad crack . 12
Figure 14 – Inner channel crack . 13
Figure 15 – Lamination . 13
Figure 16 – Crazing . 13
Figure 17 – Difference in colour tones. 14
Figure 18 – Discoloration . 14
Figure 19 – Stain . 14
Figure 20 – Crystallite . 14
Figure 21 – Roughness . 15
Figure 22 – Short-ground surface. 15
Figure 23 – Scratch . 15
Figure 24 – Convexity . 16
Figure 25 – Concavity . 16
Figure 26 – Warping . 16
Figure 27 – Deflection-out . 17
Figure 28 – Deflection-in . 17
Figure 29 – Transverse deflection . 17
Figure 30 – Undulation . 18
Figure 31 – Non-parallelism . 18
Figure 32 – Non-perpendicularity . 18
Figure 33 – Non-coplanarity . 18
Figure 34 – Non-circularity . 19
Figure 35 – Ovality . 19
Figure 36 – Non-concentricity of co-planar circles . 19
Figure 37 – Non-concentricity of circles lying on two planes . 20
Fi
...
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