EN 60205:2017

SLOVENSKI STANDARD
01-junij-2017
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SIST EN 60205:2006
SIST EN 60205:2006/A1:2009
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Calculation of the effective parameters of magnetic piece parts
Berechnung der effektiven Kernparameter magnetischer Formteile
Calcul des paramètres effectifs des pièces ferromagnétiques
Ta slovenski standard je istoveten z: EN 60205:2017
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 60205
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2017
ICS 29.100.10 Supersedes EN 60205:2006
English Version
Calculation of the effective parameters of magnetic piece parts
(IEC 60205:2016)
Calcul des paramètres effectifs des pièces Berechnung der effektiven Kernparameter magnetischer
ferromagnétiques Formteile
(IEC 60205:2016) (IEC 60205:2016)
This European Standard was approved by CENELEC on 2016-12-23. 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: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60205:2017 E
European foreword
The text of document 51/1149/FDIS, future edition 4 of IEC 60205, 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 60205:2017.
The following dates are fixed:
(dop) 2017-09-23
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2019-12-23
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 60205:2006.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60205:2016 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated :
IEC 62317-13 NOTE Harmonized as EN 62317-13.

IEC 60205 ®
Edition 4.0 2016-11
INTERNATIONAL
STANDARD
Calculation of the effective parameters of magnetic piece parts

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.100.10 ISBN 978-2-8322-3775-5

– 2 – IEC 60205:2016 © IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions. 7
4 Basic rules applicable to this standard . 7
5 Formulae for the various types of cores . 8
5.1 Ring cores . 8
5.1.1 Ring cores in general . 8
5.1.2 For ring cores of rectangular cross-section with sharp corners . 9
5.1.3 For ring cores of rectangular cross-section with an appreciable average
rounding radius r . 9
5.1.4 For ring cores of rectangular cross-section with appreciable chamfer c . 9
5.1.5 For ring cores of trapezoidal cross-section with sharp corners . 9
5.1.6 For ring cores of trapezoidal cross-section with an appreciable average
rounding radius r . 9
5.1.7 For ring cores of cross-section with circular arc frontal sides . 9
5.2 Pair of U-cores of rectangular section . 10
5.3 Pair of U-cores of rounded section . 10
5.4 Pair of E-cores of rectangular section . 11
5.5 Pair of ETD/EER-cores . 12
5.6 Pair of pot-cores . 14
5.7 Pair of RM-cores . 16
5.8 Pair of EP-cores . 20
5.9 Pair of PM-cores . 21
5.10 Pair of EL-cores . 23
5.11 Pair of ER-cores (low profile) . 25
5.12 Pair of PQ-cores . 28
5.13 Pair of EFD-cores. 31
5.14 Pair of E planar-cores . 33
5.15 Pair of EC-cores . 34
Bibliography . 37

Figure 1 – Ring cores . 8
Figure 2 – Pair of U-cores of the rectangular section . 10
Figure 3 – Pair of U-cores of rounded section . 11
Figure 4 – Pair of E-cores of rectangular section . 12
Figure 5 – Pair of ETD/EER-cores . 13
Figure 6 – Pair of pot-cores . 14
Figure 7 – Pair of RM-cores . 18
Figure 8 – Pair of EP-cores . 20
Figure 9 – Pair of PM-cores . 22
Figure 10 – Pair of EL-cores . 23

IEC 60205:2016 © IEC 2016 – 3 –
Figure 11 – PLT(plate)-cores . 24
Figure 12 – Pair of ER-cores (low profile) . 26
Figure 13 – PLT(plate)-cores . 26
Figure 14 – Pair of PQ-cores . 28
Figure 15 – PQ-cores . 29
Figure 16 – PLT(plate)-cores . 29
Figure 17 – Pair of EFD-cores . 31
Figure 18 – Pair of E planar-cores . 33
Figure 19 – PLT(plate)-cores . 33
Figure 20 – Pair of EC-cores . 35

– 4 – IEC 60205:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CALCULATION OF THE EFFECTIVE PARAMETERS
OF MAGNETIC PIECE PARTS
FOREWORD
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60205 has been prepared by IEC technical committee 51: Magnetic
components, ferrite and and magnetic powder materials.
This fourth edition cancels and replaces the third edition published in 2006 and
Amendment 1:2009. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to th
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