EN IEC 63093-11:2018

SLOVENSKI STANDARD
01-september-2019
Nadomešča:
SIST EN 60424-3:2016
SIST EN 62317-11:2016
Feritna jedra - Smernice o merah in mejnih vrednostih površinskih nepravilnosti -
11. del: EC-jedra za uporabo v napajalnikih
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 11:
EC-cores for use in power supply applications
Ta slovenski standard je istoveten z: EN IEC 63093-11:2018
ICS:
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 63093-11

NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2018
ICS 29.100.10
English Version
Ferrite cores - Guidelines on dimensions and the limits of
surface irregularities - Part 11: EC-cores for use in power supply
applications
(IEC 63093-11:2018)
Noyaux ferrites - Lignes directrices relatives aux Ferritkerne - Richtlinien zu Maßen und Grenzen von
dimensions et limites des irrégularités de surface – Oberflächenbeschädigungen - Teil 11: EC-Kerne für den
Partie 11 : Noyaux EC utilisés dans des applications Einsatz in Netzteilen
d'alimentation électrique (IEC 63093-11:2018)
(IEC 63093-11:2018)
This European Standard was approved by CENELEC on 2018-07-26. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63093-11:2018 E

European foreword
The text of document 51/1214/CDV, future edition 1 of IEC 63093-11, 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 63093-11:2018.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-04-26
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2021-07-26
document have to be withdrawn
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 63093-11:2018 was approved by CENELEC as a European
Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60424-3:2015 NOTE Harmonized as EN 60424-3:2016 (not modified)
IEC 62317-11 NOTE Harmonized as EN 62317-11

Withdrawn publication.
Withdrawn publication.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60205 -  Calculation of the effective parameters of EN 60205 -
magnetic piece parts
IEC 60401-1 -  Terms and nomenclature for cores made of EN 60401-1 -
magnetically soft ferrites -- Part 1: Terms
used for physical irregularities
IEC 60424-1 -  Ferrite cores - Guidelines on the limits of EN 60424-1 -
surface irregularities - Part 1: General
specification
IEC 63093-11 ®
Edition 1.0 2018-06
INTERNATIONAL
STANDARD
Ferrite cores – Guidelines on dimensions and the limits of surface

irregularities –
Part 11: EC-cores for use in power supply applications

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.100.10 ISBN 978-2-8322-5832-3

– 2 – IEC 63093-11:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Primary dimensions . 5
4.1 General . 5
4.2 Dimensions of EC-cores. 6
4.2.1 Principal dimensions . 6
4.2.2 Effective parameter and A values . 6
min
4.3 Dimensional limits for coil formers. 8
5 Limits of surface irregularities . 8
5.1 General . 8
5.2 Examples of surface irregularities . 8
5.3 Chips and ragged edges . 9
5.3.1 General. 9
5.3.2 Chips and ragged edges on the mating surfaces . 9
5.3.3 Chips and ragged edges on the other surfaces . 9
5.4 Cracks . 12
5.5 Flash . 12
5.6 Pull-outs . 12
5.7 Crystallites . 13
5.8 Pores . 13
Annex A (normative) Example of standard coil formers . 15
Annex B (informative) Reference of allowable areas of chips . 17
Bibliography . 18

Figure 1 – Dimensions of EC-cores . 6
Figure 2 – Main dimensions of coil formers for EC-cores. 8
Figure 3 – Examples of surface irregularities . 9
Figure 4 – Chip location for EC-cores . 10
Figure 5 – Crack and pull-out locations for EC-cores . 12
Figure 6 – Crystallite location for EC-cores . 13
Figure 7 – Pore location for EC-cores . 14
Figure A.1 – Main dimensions of coil formers for EC 35, EC 41, EC 52, EC 70 cores . 15
Figure A.2 – Main dimensions of coil formers for EC 90 core . 15

Table 1 – Dimensions of EC-cores . 7
Table 2 – Effective parameter and A values . 7
min
Table 3 – Dimensional limits for coil formers . 8
Table 4 – Area and length reference for visual inspection . 11
Table 5 – Limits for cracks . 13
Table A.1 – Main dimensions of coil formers (examples from Figures A.1 and A.2) for
EC-cores . 16
Table B.1 – Allowable areas of chips for EC-cores . 17

IEC 63093-11:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FERRITE CORES – GUIDELINES ON DIMENSIONS
AND THE LIMITS OF SURFACE IRREGULARITIES –

Part 11: EC-cores for use in power supply applications

FOREWORD
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