1、BRITISH STANDARD BS EN 61021-1:1997 IEC 1021-1: 1990 Incorporating Amendment No. 1 to BS 7382-1:1990 (renumbers BS as BSEN 61021-1:1997) Laminated core packages for transformers and inductors used in telecommunication and electronic equipment Part 1: Specification for dimensions The European Standar
2、d EN 61021-1:1997 has the status of a British Standard ICS 29.100.10; 29.180BSEN61021-1:1997 This British Standard, having been prepared under the direction of the Electronic Components Standards Policy Committee, was published underthe authority of the BoardofBSI and comes intoeffecton 30 November
3、1990 BSI 05-1999 The following BSI references relate to the work on this standard: Committee reference ECL/20 Draft for comment 87/28644 DC ISBN 0 580 19171 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Electronic Components Standard
4、s Policy Committee (ECL/-) to Technical Committee ECL/20, upon which the following bodies were represented: Electronic Components Industry Federation Ministry of Defence National Supervising Inspectorate Telecommunication Engineering and Manufacturing Association The following bodies were also repre
5、sented in the drafting of the standard, through subcommittees and panels: Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd) Sheet Makers Conference Transmission and Distribution Association (BEAMA Ltd) Amendments issued since publication Amd. No. Date Comments
6、 9750 December 1997 Indicated by a sideline in the marginBSEN61021-1:1997 BSI05-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Scope 3 2 Definitions 3 3 Laminations 3 4 Core size designation 3 5 Core dimensions and tolerances 4 Annex ZA (normative) N
7、ormative references to international publications with their corresponding European publications 6 Figure 1 YEE 2 laminations: standard configuration 4 Figure 2 YEE 2 laminations: using two larger E parts 5 Table 1 Dimensions of laminated cores: standard configuration 4 Table 2 Dimensions of laminat
8、ed cores formed by a pair of larger E core parts 5 Table 3 Tolerance codes for laminated core package height “s” 5 Publication(s) referred to Inside back coverBSEN61021-1:1997 ii BSI 05-1999 National foreword This British Standard has been prepared by Technical Committee EPL/51 (formerly ECL/20) and
9、 is the English language version of EN 61021-1:1997 Laminated core packages for transformers and inductors used in telecommunication and electronic equipment Part 1: Dimensions, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC1021-1:1990 pu
10、blished by the International Electrotechnical Commission (IEC). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity f
11、rom legal obligations. Cross-references International standard Corresponding British Standard ISO 50 (901):1973 plus supplement IEC 50 (901B):1978 BS 4727 Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms Part 1 Terms common to power, telecommunications a
12、nd electronics Group 07:1973 Magnetism terminology (Technicallyequivalent) IEC 740:1980 BS 6554 Laminations for transformers and inductors for use in telecommunication and electronic equipment Part 1:1984 Specification for dimensions, mechanical characteristics and electrical testing (Identical) Sum
13、mary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment ta
14、ble on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61021-1 April 1997 ICS 29.100.10; 29.180 Descriptors: Transformers and inductors, telecommunication and electronic equipment, laminated core packages, dimensions, tolerance English version Laminated core packages for t
15、ransformers and inductors used in telecommunication and electronic equipment Part 1: Dimensions (IEC 1021-1:1990) Noyaux en tles dcoupes pour transformateurs et inductances destins auxquipements lectroniques et de tlcommunications Partie 1: Dimensions (CEI1021-1:1990) Kernblechpakete fr Transformato
16、ren und Drosseln fr nachrichtentechnische und elektronische Einrichtungen Teil 1: Mae (IEC 1021-1:1990) This European Standard was approved by CENELEC on 1997-03-11. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
17、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 Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English,
18、 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belg
19、ium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr El
20、ektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61021-1:1997 EEN61021-1:1997 BSI 05-1999 2 Foreword The text of the International Standard IEC1021
21、-1:1990, prepared by IECTC51, Magnetic components and ferrite materials, was submitted to the formal vote and was approved by CENELEC as EN61021-2 on 1997-03-11 without any modification. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this stan
22、dard, Annex ZA is normative. Annex ZA has been added by CENELEC. latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1997-12-01 latest date by which the national standards conflicting with the EN have to be with
23、drawn (dow) 1997-12-01IEC1021-1:1990 BSI 05-1999 3 1 Scope This Part 1 of the standard specifies the dimensions, with their associated tolerances, of a range of laminated core packages using YEE2 laminations, both in their standard configuration and for assemblies using two larger E parts. NOTELamin
24、ated cores are normally constructed from laminations made from material of the composition corresponding to the designation C22, E1, E3, E4 or F1 (seeTableI of IEC Publication 740). 2 Definitions 2.1 General terms For definitions of the general terms used, reference should be made to IEC Publication
25、 50(901) and its supplement 50(901B). For the purpose of this standard, the following definition applies: 2.2 laminated core package a magnetic core in two parts, each made up of laminations suitably jointed together for assembly within a coil NOTEWhen required, an air gap may be introduced, prefera
26、bly in the centre limb of one part. 3 Laminations 3.1 Lamination shape For the purpose of this standard, the laminations shall conform to the dimensions of IEC type YEE2 laminations specified in Table XI of IEC Publication740. However, in addition to the standard configuration using the combination
27、of larger and smaller E laminations to form a complete magnetic circuit as shown in Figure 1 the range of specified cores also includes provision for combining pairs of the larger E laminations (seeFigure 2). 3.2 Nominal lamination thickness The thickness of laminations used in laminated cores shall
28、 be one of the following values: 4 Core size designation The core designation shall consist of the lamination designation YEE 2-2 to 2-12 from Table XI of IECPublication 740 together with suffix letters as follows: or 0,10 mm 0,20 mm 0,30 mm 0,15 mm 0,27 mm 0,35 mm NOTEThese are preferred values fro
29、m Table II of IECPublication 740.EN1021-1:1990 4 BSI 05-1999 5 Core dimensions and tolerances The dimensions and tolerances of core packages shall be as given in Table 1, Table 2 and Table 3. NOTEIn each case, a centre limb air gap may be introduced by grinding one or both parts of the core, or by t
30、ooling in the gap at the lamination stage. All the listed dimensions in this standard are in millimetres. Table 1 Dimensions of laminated cores: standard configuration Figure 1 YEE 2 laminations: standard configuration Core designation Reference letter and tolerance code (see note 1) a b b 1 b 2 c c
31、 1 c 2 d e f s “ IT 13 “ IT 14 “ IT 13 “ IT 14 IT 11 IT 11 See note 2 YEE 2-2 d K YEE 2-3 d K YEE 2-4 d K YEE 2-5 d K YEE 2-6 d K YEE 2-8 d K YEE 2-10 d K YEE 2-12 d K 8 10 12,6 16 20 25 32 40 8 10 12,6 16 20 25 32 40 5,5 7 8,6 11 14 17 22 28 2,5 3 4 5 6 8 10 11 5,6 7 8,8 11,2 14 17,4 22,4 28 4,3 5,
32、5 6,7 8,6 11 13,2 17,2 22 1,3 1,5 2,1 2,6 3 4,2 5,2 6 2,4 3 3,8 4,8 6 7,6 9,6 12 5,6 7 8,8 11,2 14 17,4 22,4 28 1,2 1,5 1,9 2,4 3 3,8 4,8 6 2,4 3 3,8 4,8 6 7,6 9,6 12 NOTE 1See Table IV of IEC Publication 740. NOTE 1For tolerances of “s”, see Table 3 of this standard. 0 + 0IEC1021-1:1990 BSI 05-1999
33、 5 Table 2 Dimensions of laminated cores formed by a pair of larger E core parts Table 3 Tolerance codes for laminated core package height “s” Figure 2 YEE 2 laminations: using two larger E parts Core designation Reference letter and tolerance code (see note 1) a b b 1 b 2 c c 1 c 2 d e f s “ IT 13
34、“ IT 14 “ IT 14 IT 11 IT 11 See note 2 YEE 2-6 d K L YEE 2-8 d K L YEE 2-10 d K L YEE 2-12 d K L 20 25 32 40 28 34 44 56 14 17 22 28 14 17 22 28 22 26,4 34,4 44 11 13,2 17,2 22 11 13,2 17,2 22 6 7,6 9,6 12 14 17,4 22,4 28 3 3,8 4,8 6 6 7,6 9,6 12 NOTE 1See Table IV of IEC Publication 740. NOTE 2For
35、tolerances of “s”, see Table 3 of this standard. Lamination thickness 0,35 0,3 0,27 0,2 0,15 0,10 Tolerance code IT 15 IT 15 IT 15 IT 14 IT 14 IT 13 0 + 0 0 0 0 0 0 0 EN1021-1:1990 6 BSI 05-1999 Annex ZA (normative) Normative references to international publications with their corresponding European
36、 publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of an
37、y of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). NOTEWhen an international publication has been modified by common modifications, ind
38、icated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 50(901) 1973 International Electrotechnical Vocabulary(IEV) Chapter 901: Magnetism IEC 50(901 B) 1978 Second supplement IEC 740 1982 Laminations for transformers and inductors for use in telecommunication and electron
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