1、 IEC TR 63090 Edition 1.0 2017-05 TECHNICA L REPOR T Dimensional tolerances of ferrite cores IEC TR 63090:2017-05(en)colourinside THIS PUBLICA TION IS COPYRIGHT PROTECTED Copyright 2017 IEC,Geneva,Switzerland All rights reserved.Unless other wise specified,no par t of this publication may be reprodu
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10、further assistance,please contact the Customer Serv ice Centre:csciec.ch.IEC TR 63090 Edit ion 1.0 2017-05 TECHNICA L R EPOR T Dimensional tolerances of ferrite cores INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.100.10 ISBN 978-2-8322-4349-7 R egist er ed tr ademar k of t he Int er national Elec
11、tr ot echnical Commission W arning!Make sure that y ou obtained this publication from an authorized distributor.colourinside 2 IEC TR 63090:2017 IEC 2017 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.7 2 Normative references.7 3 Terms and definitions.7 4 Summary of dimensional tolerances of ferrite cor
12、es.7 4.1 General.7 4.2 Dimensional tolerances of E-cores.7 4.3 Dimensional tolerances of ring cores.9 4.4 Dimensional tolerances of ETD/EER-cores.11 4.5 Dimensional tolerances of planar ER-cores.13 5 Conclusion.15 Annex A(informative)Data of dimensional tolerances.16 A.1 E-core.16 A.2 Ring core.34 A
13、.3 ETD/EER-core.43 A.4 Planar ER-core.49 Bibliography.55 Figure 1 Cause-and-effect diagram of variations in dimension.6 Figure 2 E-core.7 Figure 3 Dimensional tolerances of each part of E-cores.9 Figure 4 Ring core.10 Figure 5 Dimensional tolerances of each part of ring cores.11 Figure 6 ETD/EER-cor
14、e.11 Figure 7 Dimensional tolerances of each part of ETD/EER-cores.13 Figure 8 Planar ER-core.14 Figure 9 Dimensional tolerances of each part of planar ER-cores.15 Table 1 IEC standards of ferrite core dimensions.5 Table 2 Dimensional tolerances recommended for a new design of E-cores.8 Table 3 Dime
15、nsional tolerances recommended for a new design of ring cores.10 Table 4 Dimensional tolerances recommended for a new design of ETD/EER-cores.12 Table 5 Dimensional tolerances recommended for a new design of planar ER-cores.14 Table A.1 Dimensional tolerances of each part(E-core).16 Table A.2 Dimens
16、ional tolerances of each part(Ring-core).34 Table A.3 Dimensional tolerances of each part(ETD/EER-core).43 Table A.4 Dimensional tolerances of each part(Planar ER-core).49 IEC TR 63090:2017 IEC 2017 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ DIMENSIONAL TOLERANCES OF FERRITE CORES FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprising all national electrotechnical committees(IEC National Committees).The object of IEC is to promo
