1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 1: Mechanical and electrical characteristicsThe European Standard EN 60740-1:2005 has the stat
2、us of a British StandardICS 29.100.10Laminations for transformers and inductors BRITISH STANDARDBS EN 60740-1:2005BS EN 60740-1:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 December 2005 BSI 23 December 2005ISBN 0 580 47102 0A list
3、of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards C
4、orrespondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does no
5、t of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 59 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since p
6、ublicationAmd. No. Date Comments aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them
7、 in the UK.National forewordThis British Standard is the official English language version of EN 60740-1:2005. It is identical with IEC 60740-1:2005. It supersedes BS 6554-1:1984 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EPL/51, Transformers, ind
8、uctors, magnetic components and ferrite materials, which has the responsibility to:EUROPEAN STANDARD EN 60740-1 NORME EUROPENNE EUROPISCHE NORM October 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrot
9、echnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60740-1:2005 E ICS 29.100.10 English version Laminations for transformers and inductors Part 1: Mech
10、anical and electrical characteristics (IEC 60740-1:2005) Tles dcoupes pour transformateurs et inductances Partie 1: Caractristiques lectriques et mcaniques (CEI 60740-1:2005) Kernbleche fr Transformatoren und Drosseln Teil 1: Mechanische und elektrische Eigenschaften (IEC 60740-1:2005) This European
11、 Standard was approved by CENELEC on 2005-08-01. 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 co
12、ncerning such national standards may be obtained on application to the Central Secretariat 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 in
13、to its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, La
14、tvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 51/823/FDIS, future edition 1 of IEC 60740-1, prepared by IEC TC 51, Magnetic components and ferrite materials, was submitted to
15、 the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60740-1 on 2005-08-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-05-01 latest date by which the nat
16、ional standards conflicting with the EN have to be withdrawn (dow) 2008-08-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60740-1:2005 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliog
17、raphy, the following note has to be added for the standard indicated: IEC 61797-1 NOTE Harmonized as EN 61797-1:1996 (not modified). _ EN 60740-1:2005 2 3 EN 60740-1:2005 CONTENTS 1 Scope 7 2 Normative references .7 3 Terms, definitions and symbols.8 4 Materials and lamination thicknesses12 4.1 Mate
18、rials .12 4.2 Nominal lamination thickness.12 4.3 Minimum stacking factor 13 5 Designation of laminations and lamination strips.13 5.1 Specified complete shapes 13 5.1.1 Lamination outline shapes13 5.1.2 Specified shape with lamination strips14 5.2 Lamination strips for specified shapes .14 5.2.1 La
19、mination strips for yokes 14 5.2.2 Lamination strips for limbs .14 5.3 Lamination strips for non-specified laminations 15 6 Packing and marking 15 7 Electrical tests15 7.1 General.15 7.2 Core constants 15 7.3 Magnetic path length .16 7.4 Core cross-section 16 8 General conditions for electrical meas
20、urements 17 8.1 Atmospheric conditions17 8.2 Test coils 17 8.3 Test cores .17 8.4 Harmonic content of the voltage 17 9 Measurements at high field strength .17 9.1 General.17 9.2 Measurement of power loss .18 9.2.1 Power loss for single-phase cores18 9.2.2 Power loss for three-phase cores.20 9.3 Meas
21、urement of total apparent power 20 9.3.1 Total apparent power for single-phase cores 20 9.3.2 Total apparent power for three-phase cores .21 10 Measurements at low and medium field strength .21 10.1 General.21 10.2 Measurement of amplitude permeability .21 11 Preferred ranges of laminations22 12 Dim
22、ensions and tolerances.23 12.1 Dimensions .23 12.2 Tolerances 23 12.3 Symmetry tolerances .24 13 Dimensions and effective parameters .24 13.1 General.24 13.2 Lamination strips Type YS .24 13.3 Laminations Type YEI 1.25 EN 60740-1:2005 4 13.4 Laminations Type YUI 1.26 13.4.1 Lamination outline shapes
23、 Type YUI 1 .26 13.4.2 Lamination strip shape Type YSUI 1.28 13.5 Lamination Types YUI 2.29 13.5.1 Lamination outline shape Type YUI 2 .29 13.5.2 Lamination strip shape Type YSUI 2.30 13.6 Lamination Types YEx 2, YEE 2 and YEI 2 31 13.7 Lamination Types YEE 2-L 32 13.8 Lamination Types YEx 3, YEE 3,
24、 YEF 3, YEI 3 and YEL 334 13.9 Lamination Types YEx 4, YEE 4 and YEF 4 .35 13.10 Laminations Type YM 1 .37 14 Electrical characteristics for materials.38 15 Specific total apparent power for laminations 39 16 Specific power loss for laminations .40 17 Mechanical characteristics for laminations 41 17
25、.1 General appearance and conditions.41 17.2 Cut and punch edge 41 17.3 Camber .42 17.4 Distortion 42 17.5 Bending.42 17.6 Insulation 42 17.7 Welding.43 Annex A (informative) Conversion of polarisation and field strength into specific total apparent power.44 A.1 Specific total apparent power from po
26、larisation and field strength 44 A.2 Equations for the curves of the magnetic materials 48 A.2.1 Specific reactive power 48 A.2.2 Specific reactive power of the material .48 A.2.3 Specific reactive power of the air gap.48 A.2.4 Specific power loss 49 A.2.5 Specific total apparent power .49 A.3 Const
27、ants for non-oriented silicon steel C 21 .49 A.4 Specific reactive power and specific power loss for non-oriented silicon steel C 2151 A.4.1 Specific reactive power 51 A.4.2 Specific power loss 52 A.5 Constants for grain-oriented silicon steel C 22 .53 A.6 Specific reactive power and specific power
28、loss for grain-oriented silicon steel C 2255 A.6.1 Specific reactive power 55 A.6.2 Specific power loss 56 A.7 Influence of the shape on the electrical characteristics for grain-oriented silicon steel C 22.57 Figure 1 Measurements at high field strength, direct and indirect method, single-phase core
29、s .19 Figure 2 Measurements at high field strength, direct method, three-phase cores 20 Figure 3 Measurements at low and medium field strength.22 Figure 4 Lamination strips Type YS, dimensions and tolerances.24 5 EN 60740-1:2005 Figure 5 Laminations Type YEI 1, dimensions 25 Figure 6 Laminations Typ
30、e YUI 1, dimensions27 Figure 7 Layer plan for the lamination strip shapes Type YSUI 1 28 Figure 8 Laminations Type YUI 2, dimensions29 Figure 9 Layer plan for the lamination strip shapes Type YSUI 2 31 Figure 10 Laminations Type YEx 2, dimensions31 Figure 11 Laminations Type YEE 2-L, using two long
31、E parts, dimensions 33 Figure 12 Laminations Type YEx 3, dimensions34 Figure 13 Laminations Type YEx 4, dimensions35 Figure 14 Laminations Type YM 1, dimensions.37 Figure 15 Definition and limit of camber .42 Figure 16 Definition and limit of distortion 42 Figure 17 Definition and limit of bending 4
32、2 Figure A.1 Specific total apparent power for non-oriented silicon steel C 21 .47 Table 1 Preferred magnetic steel and alloys used for laminations .12 Table 2 Material and lamination thickness 12 Table 3 Tolerance of the thickness of laminations 13 Table 4 Lamination thickness and stacking factor.1
33、3 Table 5 Test conditions for the materials C 21, C 22 and F 1 for power loss and total apparent power 18 Table 6 Conditions for the measurement of amplitude permeability of cores using laminations of silicon steel21 Table 7 Conditions for the measurement of amplitude permeability of cores using lam
34、inations of nickel-iron alloys 22 Table 8 Summary of preferred shapes23 Table 9 Tolerance according to ISO 286-1 .23 Table 10 Tolerances for lamination strips .24 Table 11 Laminations Type YEI 1, relation factor of dimensions and tolerances26 Table 12 Laminations Type YEI 1, diameter of the holes an
35、d tolerance factor x 26 Table 13 Laminations Type YUI 1, relation of dimensions and tolerances .27 Table 14 Laminations Type YUI 1, diameter of the holes and tolerance factor x 28 Table 15 Laminations Type YUI 2, relation of dimensions and tolerances .30 Table 16 Laminations Type YUI 2, diameter of
36、the holes and tolerance factor x 30 Table 17 Laminations Type YEx 2, dimensions and tolerances .32 Table 18 Laminations Type YEx 2, effective parameters.32 Table 19 Laminations Type YEE 2-L, using two long E parts, dimensions and tolerances 33 Table 20 Laminations Type YEE 2-L, using two long E part
37、s effective parameters 34 Table 21 Laminations Type YEx 3, dimensions and tolerances .34 Table 22 Laminations Type YEx 3, effective parameters.35 Table 23 Laminations Type YEE 4, dimensions and tolerances.36 Table 24 Laminations Type YEF 4, dimensions and tolerances.36 Table 25 Laminations Type YEx
38、4, effective parameters.36 EN 60740-1:2005 6 Table 26 Laminations Type YM 1, dimensions and tolerances 37 Table 27 Laminations Type YM 1, effective parameters 38 Table 28 Materials from IEC 60404-8-4 and IEC 60404-8-7 and Table 1. Characteristics for the electrical steel sheet and strips, and lamina
39、tions for the specific total apparent power pS0and the specific power loss pFe039 Table 29 Specific total apparent power pS in VA/kg for the materials from Table 1 for all types of laminations and limb width.40 Table 30 Specific power loss pFein W/kg for the materials from Table 1 for all types of l
40、aminations and limb width41 Table 31 Insulation resistance of coated surface of laminations made from material according to Table 1.43 Table 32 Approximate values for the test of welding for laminations from materials C 21 and C 2243 Table A.1 Data for the specific total apparent power and the speci
41、fic power loss for C 21 and C 22 materials .46 Table A.2 Constants for the specific reactive power of non-oriented silicon steel C 21.49 Table A.3 Constants for the specific power loss of non-oriented silicon steel C 2150 Table A.4 Specific reactive power for non-oriented silicon steel C 2151 Table
42、A.5 Specific power loss for non-oriented silicon steel C 2152 Table A.6 Constants for the specific reactive power of grain-oriented silicon steel C 22.53 Table A.7 Constants for the specific power loss of grain-oriented silicon steel C 22 54 Table A.8 Specific reactive power for grain-oriented silic
43、on steel C 2255 Table A.9 Specific power loss for grain-oriented silicon steel C22.56 Table A.10 Parts of the magnetic path in rolling direction lW/ lFe and perpendicular to the rolling direction lq/ lFefor laminations of 13.3 to 13.10.57 7 EN 60740-1:2005 Part 1: Mechanical and electrical character
44、istics 1 Scope This part of IEC 60740 specifies the characteristics of laminations. Their preferred use is cores for transformers and inductors. The laminations are made of sheets and strips of magnetic materials, specified in IEC 60404-8-4 and IEC 60404-8-7. 2 Normative references The following ref
45、erenced documents are indispensable for the application 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. IEC 60050-221, International Electrotechnical Vocabulary (IEV) Cha
46、pter 221: Magnetic materials and components IEC 60404-1:2000, Magnetic materials Part 1: Classification IEC 60404-8-4:1998, Magnetic materials Part 8-4: Specifications for individual materials Cold-rolled non-oriented electrical steel sheet and strip delivered in the fully-processed state IEC 60404-
47、8-7:1998, Magnetic materials Part 8-7: Specifications for individual materials Cold-rolled grain-oriented electrical steel sheet and strip delivered in the fully-processed state IEC 60404-11:1999, Magnetic materials Part 11: Method of test for the determination of surface insulation resistance of ma
48、gnetic sheet and strip IEC 61021-1:1990, Laminated core packages for transformers and inductors used in telecommunication and electronic equipment Part 1: Dimensions IEC 61021-2:1995, Laminated core packages for transformers and inductors used in telecommunication and electronic equipment Part 2: El
49、ectrical characteristics for cores using YEE 2 laminations ISO 286-1:1988, ISO system of limits and fits Part 1: Bases of tolerances, deviations and fits LAMINATIONS FOR TRANSFORMERS AND INDUCTORS EN 60740-1:2005 8 3 Terms, definitions and symbols For the purposes of this document, the definitions of IEC 60050-221 and the following apply. 3.1 la
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