1、* * tn STD.BS1 BS EN bL797-1-ENGL 1777 1b24bb9 Ob21321 bAh II BRITISH STANDARD Dansformers 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 Britis
2、h Standard ICs 29.100.10; 33.120.01 BS EN 61797-1 : 1997 IEC 1797-1 1996 BS EN 61797-1 1997 Amd.No. This British Standard, having been prepared under the direction of the Electrotechnicai Sector Board, was published under the authority of the Standards Board and comes into effect on 16 June 1997 O B
3、SI 1997 Date Text affected Committees responsible for this British Standard The preparation of this British standard was entnisted to Technid Committee EPU51, ?ictnsfomiers, inductors, magnetic components and ferrite materials, upon which the following bodies were represented Federation of the Elect
4、ronics Industry Ministsy of Defence National Physical Laboratory Nationai Supervising Inspectorate SI - PC) The foilowing BSI references relate to the work on this standard Commitfee reference EPIl61 Draft for comment 93/208997 DC ISBN O 580 27398 7 - STD-BSI BS EN b1797-1-ENGL 1997 1b24bb9 Ob21323
5、459 W BS EN 61797-1 : 1997 National foreword This Part of BS EN 61797 has been prepared by Technid Committee EPU51, and is the English language version of EN 61797-1 : 1996, m-anSfoomzers and iductryrsfor use in telecommunication and eiectronic equipment - Main dimmsions of coil fomners - Part 1. Co
6、fmwsfor hmimted cores, published by the European Committee for Electrokchnid Standardization (CENELEC). It is identical with EC 1797-1 : 1996, published by the Intemational Electtotechnical Commission (IEC). Cross-references Publication referred to HD 323.2.20 S3 : 1988 (IEC 68-2-20 : 1979) HD 441 S
7、I : 1983 (IEC 707 : 1981) IEC 740 : 1982 EN 202861 : 1993 (EO 286-1 : 1988) Corresponding British Standard BS 2011 Enwirmmtal testing Part 2 Tests Part 2.1T : 1981 Test I: Soldering BS 6334 : 1983 Methods of test for the determination of the jlamwwbility of solid eEectrical insuluting materials when
8、 exposed ta an igniting source BS 6554 Laminations for transformers and inductors for use in telecmnmunicatm and electronic equipnwnt Part 1 : 1984 Spenifzatm for dimensions, rnechncd characteristics and electrical testing BS EN 20286 IS0 system of limits and fits Part 1 : 1993 IS0 system of limits
9、and fits. Bases of tohmes, deviations andfits Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside PBTP polybutylene terephthalate (thermoplastic polyester): PETP polyethylene terephthalate (th
10、ermoplastic polyester). 9 Solderability and mechanical strength of terminal pins Solderability of terminal pins shall comply with test Ta of IEC 68-2-20 and test method 1 shall be applied, the conditions for which are: solder bath temperature 235 OC, stay time in solder bath 2 s,f 0.5 s; and ageing
11、3: 16 h at 155 OC. Parts of the terminal pins, which are intended for completion of soldering, are not allowed to be dipped into the solder bath by less than 0.3 mm to the moulded piece. The mechanical strength of the terminal pins shall comply with IEC 321. Page 24 EN 61797-1 : 1996 Annex ZA (norma
12、tive) Normative references to international publications with their corresponding European 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 publicatio
13、ns are listed hereafter. For dated references, subsequent amendments to or revisions of any 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 amendme
14、nts). NOW. When an international publication has been modified by common modifications, indicated by (mod), the relevant ENMD applies. IEC 68-2-20 + A2 IEC 321 Al IEC 707 Al IEC 740 Al IEC 852 IS0 3 IS0 286-1 mc 1979 1987 1970 1975 1981 1992 1982 1991 series 1973 1988 Basic environmental testing pro
15、cedures Part 2: Tests - Test T Soldering Guidance for the design and use of components intended for mounting on boards with printed wiring and printed circuits Methods of test for the determination of the flammability of solid electrical insulating materials when exposed to an igniting source Lamina
16、tions for transformers and inductors for use in telecommunication and electronic equipment Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment Preferred numbers - Series of preferred numbers IS0 system of limits and fits Part 1: Bases of toierances,
17、 deviations and fits ENR1D yaat HD 323.2.20 53 1988 STD.BSI BS EN bL777-1-ENGL 11997 lb24bb7 Ob21348 29 m BS EN 61797-1 : 1997 List of references See national foreword. * * rn O BSI 1997 BS EN 61797-1 : 1997 JEC 1797-1 : 1996 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Instituti
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