1、BRITISH STANDARD BS EN 61797-1:1997 IEC 1797-1: 1996 Transformers and inductors for use in telecommunication and electronic equipment Main dimensions of coil formers Part 1: Coil formers for laminated cores The European Standard EN 61797-1:1996 has the status of a British Standard ICS 29.100.10; 33.
2、120.01BSEN61797-1:1997 This British Standard, having been prepared under the directionof the ElectrotechnicalSector Board, was published under the authorityof the Standards Boardand comes into effect on 15June1997 BSI 09-1999 The following BSI references relate to the work on this standard: Committe
3、e reference EPL/51 Draft for comment 93/208997 DC ISBN 0 580 27398 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee EPL/51, Transformers, inductors, magnetic components and ferrite materials, upon which the following bod
4、ies were represented: Federation of the Electronics Industry Ministry of Defence National Physical Laboratory National Supervising Inspectorate (BSI PC) Amendments issued since publication Amd. No. Date CommentsBSEN61797-1:1997 BSI 09-1999 i Contents Page Committees responsible Inside front cover Na
5、tional foreword ii Foreword 2 Text of EN 61797-1 5 List of references Inside back coverBSEN61797-1:1997 ii BSI 09-1999 National foreword This Part of BS EN 61797 has been prepared by Technical Committee EPL/51, and is the English language version of EN61797-1:1996, Transformers and inductors for use
6、 in telecommunication and electronic equipment Main dimensions of coil formers Part1. Coil formers for laminated cores, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 1797-1:1996, published by the International Electrotechnical Commission
7、 (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 from legal obligations. Cross-references Publication refe
8、rred to Corresponding British Standard HD 323.2.20 S3:1988 (IEC 68-2-20:1979) BS 2011 Environmental testing Part 2 Tests Part 2.1T:1981 Test T. Soldering HD 441 S1:1983 (IEC 707:1981) BS 6334:1983 Methods of test for the determination of the flammability of solid electrical insulating materials when
9、 exposed to an igniting source IEC 740:1982 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 EN 20286-1:1993 (ISO 286-1:1988) BS EN 20286 ISO system of
10、limits and fits Part 1:1993 ISO system of limits and fits. Bases of tolerances, deviations and fits Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 24, an inside back cover and a back cover. This standard has been updated (s
11、ee copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61797-1 December 1996 ICS 29.180 Descriptors: Transformers and inductors, telecommunication and electronic equipme
12、nt, coil formers for laminated cores, main dimensions, bracket mounting, printed board mounting, grid plans mounting, material of coil formers, solderability and mechanical strength of terminal pins English version Transformers and inductors for use in telecommunication and electronic equipment Main
13、 dimensions ofcoilformers Part 1: Coil formers for laminated cores (IEC 1797-1:1996) Transformateurs et inductances destins auxquipements lectroniques et de tlcommunication Dimensions principales descarcasses Partie 1: Carcasses pour noyauxfeuillets (CEI 1797-1:1996) Transformatoren und Drosseln fr
14、nachrichtentechnische und elektronische Einrichtungen Spulenkrperhauptmae Teil1: Spulenkrper fr lamellierte Kerne (IEC 1797-1:1996) This European Standard was approved by CENELEC on 1996-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditio
15、ns 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 Central Secretariat or to any CENELEC member. This European Standard exists in three
16、 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical
17、 committees of Austria, Belgium, 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 Electrotechniq
18、ue Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 61797-1:1996 EEN61797-1:1996 BSI 09-1999 2 Foreword The text of document 51/420/FDIS, future edition1 of IEC 1797-1, prepared by IEC TC5
19、1, Magnetic components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN61797-1 on 1996-10-01. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA
20、has been added by CENELEC. Endorsement notice The text of the International Standard IEC 1797-1:1996 was approved by CENELEC as a European Standard without any modification. latest date by which the EN has to be implemented at national level by publication of an identical national standard or by end
21、orsement (dop) 1997-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1997-07-01EN61797-1:1996 BSI 09-1999 3 Contents Page Foreword 2 1 Scope and object 5 2 Normative references 5 3 Laminations 5 4 Coil former designation 5 4.1 Standard version (wit
22、hout terminal pins) 5 4.2 Printed wiring board mounting version (with terminal pins) 6 5 Dimensions 6 5.1 General 6 5.2 Dimensions corresponding to the core stack height 6 6 Dimensions of coil formers for bracket mounting 7 6.1 Coil formers, standard version 7 6.1.1 Coil formers for YEI 1-types 7 6.
23、1.2 Coil formers for YEx 2-types 8 6.1.3 Coil formers for YUI 1-types 9 6.1.4 Coil formers for YM1-types 10 6.2 Coil formers, standard version with air duct 11 6.2.1 Coil formers for YEI 1-types 11 6.2.2 Coil formers for YUI 1-types 12 7 Dimensions of coil formers for printed wiring board mounting a
24、nd grid plans 13 7.1 Level mounting style 13 7.1.1 Coil formers for YEI 1-types 13 7.1.2 Coil formers for YEx 2-types 15 7.1.3 Coil formers for YUI 1-types 17 7.1.4 Coil formers for YM 1-types 19 7.2 Vertical mounting style 21 7.2.1 Coil formers for YEx 2-types 21 8 Material of coil formers 22 9 Sol
25、derability and mechanical strength of terminal pins 22 Annex ZA (normative) Normative references to international publications with their corresponding European publications 23 Figure 1 YEI 1coil formers for bracket and U-clamp mounting, standard version 7 Figure 2 YEx 2 coil formers for bracket and
26、 U-clamp mounting, standard version 8 Figure 3 YUI 1 coil formers for bracket and pillar mounting, standard version 9 Page Figure 4 YM 1 coil formers for bracket mounting, standard version 10 Figure 5 YEI 1 coil formers for bracket mounting, standard version with air duct, vertical mounting style 11
27、 Figure 6 YUI 1 coil formers for bracket mounting, standard version with air duct, vertical mounting style 12 Figure 7 YEI 1 coil formers for printed wiring board mounting, level mounting style 13 Figure 8 Grid plans for coil formers type YEI 1 for printed wiring board mounting, level mounting style
28、, metric grid plan 14 Figure 9 YEx 2 coil formers for printed wiring board mounting, level mounting style 15 Figure 10 Grid plans for coil formers type YEx 2 for printed wiring board mounting, level mounting style, metric grid plan 16 Figure 11 YUI 1 coil formers for printed wiring board mounting, l
29、evel mounting style 17 Figure 12 Grid plans for coil formers type YUI 1 for printed wiring board mounting, level mounting style, metric grid plan 18 Figure 13 YM 1 coil formers for printed wiring board mounting, level mounting style 19 Figure 14 Grid plans for coil formers type YM 1 for printed wiri
30、ng board mounting, level mounting style, metric grid plan 20 Figure 15 YEx 2 coil formers for printed wiring board mounting, vertical mounting style 21 Figure 16 Grid plans for coil formers type YEx 2 for printed wiring board mounting, vertical mounting style, metric grid plan 22 Table 1 Dimensions
31、of coil formers type YEI 1 square stack for bracket and U-clamp mounting, standard version 7 Table 2 Dimensions of coil formers type YEx 2 square stack for bracket and U-clamp mounting, standard version 8 Table 3 Dimensions of coil formers type YUI 1 square stack for bracket and pillar mounting, sta
32、ndard version 9 Table 4 Dimensions of coil formers type YM 1 square stack for bracket mounting, standard version 10 Table 5 Dimensions of coil formers type YEI 1 square stack for bracket mounting, standard version with air duct, vertical mounting style 11EN61797-1:1996 4 BSI 09-1999 Page Table 6 Dim
33、ensions of coil formers type YUI 1 square stack for bracket mounting, standard version with air duct, vertical mounting style 12 Table 7 Dimensions of coil formers type YEI I square stack for printed wiring board mounting, level mounting style, metric grid plan 13 Table 8 Dimensions of coil formers
34、type YEx 2 square stack for printed wiring board mounting, level mounting style, metric grid plan 15 Table 9 Dimensions of coil formers type YUI 1 square stack for printed wiring board mounting, level mounting style, metric grid plan 17 Table 10 Dimensions of coil formers type YM 1 square stack for
35、printed wiring board mounting, level mounting style, metric grid plan 19 Table 11 Dimensions of coil formers type YEx 2 square stack for printed wiring board mounting, vertical mounting style, metric grid plan 21EN61797-1:1996 BSI 09-1999 5 1 Scope and object This part of IEC1797 specifies the main
36、dimensions of coil formers for transformers and inductors, using a square stack of the laminations inserted in the coil formers. The main dimensions are those permitting interchangeability with respect to conformance with core sizes and outline dimensions of the completed components. 2 Normative ref
37、erences The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 1797. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this
38、part of IEC1797 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 68-2-20:1979, Basic environmental testing procedures Part 2: Tests
39、Test T: Soldering. Amendment 2 (1987) IEC 321:1970, Guidance for the design and use of components intended for mounting on boards with printed wiring and printed circuits. Amendment 1 (1975) IEC 707:1981, Methods of test for the determination of the flammability of solid electrical insulating materi
40、als when exposed to an igniting source. Amendment 1 (1992) IEC 740:1982, Laminations for transformers and inductors for use in telecommunication and electronic equipment. Amendment 1 (1991) IEC 852, Outline dimensions of transformers and inductors for use in telecommunication and electronic equipmen
41、t. ISO 3:1973, Preferred numbers Series of preferred numbers. ISO 286-1:1988, ISO system of limits and fits Part 1: Bases of tolerances, deviations and fits. 3 Laminations For the purpose of this specification, the laminations shall conform with the dimensions of IEC types YEI 1, YEx 2, YUI 1, YUI 2
42、 and YM 1, as prescribed in the tables of IEC 740. YEx stands for the types YEE, YEF, YEI, YEL and YES. 4 Coil former designation Coil formers shall be designated as follows: 4.1 Standard version (without terminal pins)EN61797-1:1996 6 BSI 09-1999 4.2 Printed wiring board mounting version (with term
43、inal pins) 5 Dimensions 5.1 General Typical drawings and dimensions of coil formers are listed in this standard. The coil former design may not correspond to the graphic representation shown in the figures, but the principal dimensions which have tolerances shall be followed and other details such a
44、s intermediate flanges, etc. may be arranged between the manufacturer and the user. All the listed dimensions in this standard are in millimetres. Tolerances of coil formers, except where indicated as maximum or minimum, shall comply with ISO 286-1. The appropriate tolerances are shown at the head o
45、f each column of the table of dimensions. Flange thickness should be0,4mm minimum. Length of terminal pins depends on printed wiring board thickness of1,5mm or1,6mm. 5.2 Dimensions corresponding to the core stack height In the associated standards on outline dimensions of transformers and inductors,
46、 IEC 852 series, a range of stack heights is specified, which allows continuous variations of power ratings, although the square stack is preferred. The increment of the stack height follows the R10 series of preferred numbers) 1) as a multiple of the width of that limb of the lamination which carri
47、es the total magnetic flux. A suffix letter is used to designate the appropriate stack height as shown below: If a stack height other than the preferred square stack is used for the core, and one of the other specified stack heights is chosen, the dimensions of the associated coil formers in the dir
48、ection of the stack height will differ from those given in the following tables, which apply to square stacks only. In this case the values of dimensions c and h are obtained by increasing or decreasing the values in the appropriate tables by the same amount as the stack height changes. 1) As define
49、d in ISO 3. Suffix letter z Multiple of limb width of lamination a 0,5 b 0,63 c 0,8 d 1,0square stack e 1,25 f 1,6 g 2,0EN61797-1:1996 BSI 09-1999 7 The lamination designation followed by the appropriate suffix letter shall be used to designate the core. If two larger parts of a lamination shape are used to form a core, this shall be indicated by the letter L to the designation (e.g. YEx 2). 6 Dimensions of coil formers for bracket mounting 6.1 Coil formers
