1、Calculation of the effective parameters of magnetic piecepartsBS EN 60205:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN 60205:2017. It is identical to IEC 60205:2016. It supersedes BS EN 6020
2、5:2006+A1:2009 whichis withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/51, Transformers, inductors, magnetic components and ferrite materials.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication do
3、es not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 91814 8ICS 29.100.10Compliance with a British Standard cannot confer immunity fromlegal
4、 obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60205:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60205 March 2017 IC
5、S 29.100.10 Supersedes EN 60205:2006 English Version Calculation of the effective parameters of magnetic piece parts (IEC 60205:2016) Calcul des paramtres effectifs des pices ferromagntiques (IEC 60205:2016) Berechnung der effektiven Kernparameter magnetischer Formteile (IEC 60205:2016) This Europea
6、n 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 c
7、oncerning 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 CENELE
8、C 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 R
9、epublic 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 St
10、andardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr 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 602
11、05:2017 E BS EN 60205:2017EN 60205:2017 2 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. Th
12、e following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-09-23 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2019-12-23 T
13、his 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 Internationa
14、l 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. BS EN 60205:2017 2 IEC 60205:2016 IEC 2016 CONTEN
15、TS 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 corne
16、rs 9 5.1.3 For ring cores of rectangular cross-section with an appreciable average rounding radius r09 5.1.4 For ring cores of rectangular cross-section with appreciable chamfer c0. 9 5.1.5 For ring cores of trapezoidal cross-section with sharp corners 9 5.1.6 For ring cores of trapezoidal cross-sec
17、tion with an appreciable average rounding radius r09 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
18、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 co
19、res 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
20、Pair of PM-cores . 22 Figure 10 Pair of EL-cores 23 BS EN 60205:2017IEC 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 Pa
21、ir 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 BS EN 60205:2017 4 IEC 60205:2016 IEC 2016 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ CALCULATION OF THE EFFECTIVE PARAMETERS OF MAGNETIC PIECE PARTS FOREWORD 1) The Internatio
22、nal Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic
23、 fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; an
24、y IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standard
25、ization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has repre
26、sentation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC
27、 cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional public
28、ations. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas
29、, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents includin
30、g individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance
31、 upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the eleme
32、nts of this IEC Publication may be the subject of 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 fou
33、rth 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 the previous edition: a) addition, in 5.1, of the drawing of a core of rectangul
34、ar cross-section with chamfer; b) addition, in 5.1.3, of the equation of a core of rectangular cross-section with chamfer; c) equations in 5.1.4, 5.6, 5.7, 5.8, 5.9, 5.11, 5.12, 5.14 are amended or replaced; d) drawings RM6-S and RM6-R in 5.7 are amended; e) addition of EC-cores, see 5.15. BS EN 602
35、05:2017IEC 60205:2016 IEC 2016 5 The text of this standard is based on the following documents: FDIS Report on voting 51/1149/FDIS 51/1156/RVD Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This docume
36、nt has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, th
37、e document will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. BS EN 60205:2017 6 IEC 60205:2016 IEC 2016 INTRODUCTION The purpose of this revision is to provide formulae by which everybody can reach the sa
38、me effective parameter values. Firstly, it is necessary to have a sufficient number of significant figures when figures are rounded off in the process of calculation. Additionally, some of the calculation formulae have been changed to get closer to the actual shape. In this revision, the basic idea
39、of calculation has not been changed. Recently, analysis of the magnetic field in the core has been considerably improved, so that, based on these ideas, development of new approaches and formulae can be expected. Furthermore, the new “EC-cores” have been added. The parameters in the existing IEC sta
40、ndards will be revised with the outcome from the formulae of this document. BS EN 60205:2017IEC 60205:2016 IEC 2016 7 CALCULATION OF THE EFFECTIVE PARAMETERS OF MAGNETIC PIECE PARTS 1 Scope This document specifies uniform rules for the calculation of the effective parameters of closed circuits of fe
41、rromagnetic material. 2 Normative references There are no normative references in this document. 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: availa
42、ble at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 4 Basic rules applicable to this standard 4.1 All results shall be expressed in units based on millimetres, shall be accurate to three significant figures, but to derive le , Ae , and Ve the values of
43、 C1 and C2shall be calculated to five significant figures. All angles are in radians. NOTE The purpose of specifying this degree of accuracy is only to ensure that parameters calculated at different establishments are identical and it is not intended to imply that the parameters are capable of being
44、 determined to this accuracy. 4.2 Aminis the nominal value of the smallest cross-section. Agis the geometrical cross-section of a ring core with rectangular shape. All the dimensions used to calculate Aminshall be the mean values between the tolerance limits quoted on the appropriate piece part draw
45、ing. All results shall be expressed in units based on millimetres, and shall be accurate to three significant figures. The minimum physical cross-section area Aminis given as: Amin= min (Ai) NOTE Ag to be used for the measurement of the saturation flux density Bmaxon ring cores with rectangular cros
46、s-section. 4.3 Calculations are only applicable to the component parts of a closed magnetic circuit. 4.4 All dimensions used for the purpose of calculations shall be the mean value within the tolerance limits quoted on the appropriate piece part drawing. 4.5 All irregularities in the outline of the
47、core, such as small cut-outs, notches, chamfers, etc. shall be ignored unless otherwise described. BS EN 60205:2017 8 IEC 60205:2016 IEC 2016 4.6 When the calculation involves the sharp corner of a piece part, then the mean length of flux path for that corner shall be taken as the mean circular path
48、 joining the centres of area of the two adjacent uniform sections, and the cross-sectional area associated with that length shall be taken as the average area of the two adjacent uniform sections. Calculation of effective parameters le , Aeand Ve.The effective parameters can be defined as 221eCCl /=
49、 21e/ CCA = 2231eee/ CCAlV = where leis the effective magnetic length of the core (mm); Aeis the effective cross-sectional area (mm2); Veis the effective volume (mm3); C1is the core constant (mm1); C2is the core constant (mm3). 5 Formulae for the various types of cores 5.1 Ring cores 5.1.1 Ring cores in general Drawings of ring cores are shown in Figure 1. Figure 1 Ring cores ( )21e1/ln2ddhC= ( )( )2132e122/ln/1/14ddhddC= IEC X-X X X r h d2/2h d1/2
