EN IEC 60401-1:2020

SLOVENSKI STANDARD
01-oktober-2020
Nadomešča:
SIST EN 60401-1:2005
Pojmi in nomenklatura za jedra iz mehkomagnetnih feritov - 1. del: Pojmi,
uporabljeni za fizikalne nepravilnosti, in sklicevanje na mere
Terms and nomenclature for cores made of magnetically soft ferrites - Part 1: Terms used
for physical irregularities and reference of dimensions
Ta slovenski standard je istoveten z: EN IEC 60401-1:2020
ICS:
01.040.29 Elektrotehnika (Slovarji) Electrical engineering
(Vocabularies)
29.100.10 Magnetne komponente Magnetic components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60401-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2020
ICS 29.100.10 Supersedes EN 60401-1:2005 and all of its amendments
and corrigenda (if any)
English Version
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)
Termes et nomenclature pour noyaux en matériaux ferrites Begriffe und Bezeichnungssystem für Kerne aus
magnétiquement doux - Partie 1 : Termes utilisés pour les weichmagnetischen Materialien - Teil 1:
irrégularités physiques et références dimensionnelles Begriffsfestlegungen für physikalische Beschädigungen und
(IEC 60401-1:2020) Maßreferenzen
(IEC 60401-1:2020)
This European Standard was approved by CENELEC on 2020-05-19. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60401-1:2020 E

European foreword
The text of document 51/1313/CDV, future edition 2 of IEC 60401-1, prepared by IEC/TC 51
"Magnetic components, ferrite and magnetic powder materials" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 60401-1:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-02-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-05-19
document have to be withdrawn
This document supersedes EN 60401-1:2005 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 60401-1:2020 was approved by CENELEC as a European
Standard without any modification.

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

IEC 60401-1:2020 © IEC 2020 – 3 –
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 .
...