1、BRITISH STANDARD BS EN 60852-4:1997 IEC 852-4:1996 Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment Part 4: Transformers and inductors using YUI-2 laminations The European Standard EN 60852-4:1996 has the status of a British Standard ICS 29.180BS
2、EN60852-4:1997 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comes intoeffect on 15April1997 BSI 11-1998 The following BSI references relate to the work on this standard: Committee refe
3、rence EPL/51 Draft for comment 92/03962 DC ISBN 0 580 27199 4 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 bodies wer
4、e represented: Federation of the Electronics Industry Ministry of Defence National Physical Laboratory National Supervising Inspectorate (BSI PC) Amendments issued since publication Amd. No. Date CommentsBSEN60852-4:1997 BSI 11-1998 i Contents Page Committees responsible Inside front cover National
5、foreword ii Foreword 2 Text of EN 60852-4 3 List of references Inside back coverBSEN60852-4:1997 ii BSI 11-1998 National foreword This Part of BS EN 60852 has been prepared by Technical Committee EPL/51, and is the English language version of EN60852-4:1996, published by the European Committee for E
6、lectrotechnical Standardization (CENELEC). It is identical with IEC852-4:1996, Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment Part 4: Transformers and inductors using YUI-2 laminations, published by the International Electrotechnical Committee.
7、 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 referred to
8、 Corresponding British Standard 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 20273:1992 ISO 273:1979 BS EN 20273:1992 Fasteners. Cle
9、arance holes for bolts and screws BS EN 20286: ISO system of limits and fits EN 20286-1:1993 ISO 286-1:1988 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 p
10、age, pages 2 to 14, 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 table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60852-4 August 1996 ICS
11、 29.180 Descriptors: Transformers and inductors, YUI-2 laminations, assembly designation, mounting styles, stack heights, vertical mounting, level mounting English version Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment Part 4: Transformers and
12、inductors using YUI-2 laminations (IEC 852-4:1996) Dimensions extrieures des transformateurs et inductances destins aux quipements lectroniques et de tlcommunications Partie 4: Transformateurs et Inductances utilisant des tles dcoupes YUI-2 (CEI852-4:1996) Raumbedarfsmae fr Transformatoren und Dross
13、eln fr nachrichtentechnische und elektronische Einrichtungen Teil 4: Transformatoren und Drosseln mit YUI 2-Kernblechen (IEC852-4:1996) This European Standard was approved by CENELEC on 1996-07-02. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the cond
14、itions 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 t
15、hree 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 electrotechn
16、ical 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 Electrotec
17、hnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 60852-4:1996 EEN60852-4:1996 BSI 11-1998 2 Foreword The text of document 51/416/FDIS, future edition 1 of IEC852-4, prepared by IECT
18、C51, Magnetic components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60852-4 on 1996-07-02. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for
19、information only. In this standard, annex ZA is normative and annexes A and B are informative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC852-4:1996 was approved by CENELEC as a European Standard without any modification. Contents Page 1 Scope 3
20、2 Normative references 3 3 Laminations 3 4 Assembly designation 3 5 General requirements 4 5.1 Mounting styles 4 5.2 Stack heights 4 5.3 Tolerances 5 6 Vertical mounting style 5 7 Level mounting style 5 7.1 Bracket mounting 6 7.2 Pillar mounting 6 7.3 Printed wiring board mounting 9 Annex A (informa
21、tive) Calculation for dimensions of vertical mounting style 12 Annex B (informative) Calculation for dimensions of level mounting style 13 Annex ZA (normative) Normative references to international publications with their corresponding European publications 14 Figure 1 Vertical mounting style for tr
22、ansformers and inductors using YUI-2 laminations (coil former standard version and standard version with air duct) 5 Figure 2 Level mounting style for transformers and inductors using YUI-2 laminations, bracket mounting (coil former standard version and standard version with air duct) 6 Figure 3 Lev
23、el mounting style for transformers and inductors using YUI-2 laminations, pillar mounting (coil former standard version and standard version with air duct) 7 Figure 4 Level mounting style for transformers and inductors using YUI-2 laminations, printed wiring board mounting 9 Figure 5 Grid plans for
24、transformers and inductors using YUI-2 laminations, level mounting style, printed wiring board mounting, metric grid plan 10 Table 1 Multiple of limb width 4 Table 2 Stack height 4 Table 3 Dimensions for transformers and inductors using YUI-2 laminations, vertical mounting style-square stack, coil f
25、ormer standard version and standard version with air duct 6 Table 4 Dimensions for transformers and inductors using YUI-2 laminations, level mounting style bracket mounting square stack, coil former standard version and standard version with air duct 7 Table 5 Dimensions for transformers and inducto
26、rs using YUI-2 laminations, level mounting style pillar mounting square stack, coil former standard version with air duct 8 Table 6 Dimensions for transformers and inductors using YUI-2 laminations, level mounting style square stack printed wiring board mounting metric grid plan 8 latest date by whi
27、ch the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1997-04-01 latest date by which the national standards conflicting with the, EN have to be withdrawn (dow) 1997-04-01EN60852-4:1996 BSI 11-1998 3 1 Scope This part of IEC 852 sp
28、ecifies the outline dimensions of transformers and inductors, using YUI-2 laminations, as specified below, built for the most commonly used forms of mounting style, namely vertical mounting and level mounting. The level mounting style is subdivided into bracket mounting, and pillar mounting and prin
29、ted wiring board mounting variants. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC852. At the time of publication, the editions indicated were valid. All normative documents are subject to r
30、evision, and parties to agreements based on this part of IEC852 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 740:1982, Laminatio
31、ns for transformers and inductors for use in telecommunication and electronic equipment. Amendment 1 (1991) ISO 3:1973, Preferred numbers Series of preferred numbers. ISO 273:1979, Fasteners Clearance holes for bolts and screws. ISO 286-1:1988, ISO system of limits and fits Part1: Bases of tolerance
32、s, deviations and fits. ISO 965, ISO general purpose metric screw threads Tolerances. 3 Laminations For the purpose of this part of IEC 852, the laminations shall conform to the dimensions of IEC type YUI-range 2 as prescribed in Table 17 of IEC740. 4 Assembly designation The designation of assembli
33、es represented by this standard shall be as follows:EN60852-4:1996 4 BSI 11-1998 5 General requirements 5.1 Mounting styles The mounting styles specified below are based upon proven methods of assembly with metric type YUI-2 laminations. The data provided in clauses6 and7 give the main dimensions of
34、: Dimensions A, B and C include an allowance for varnishing. Fixing screws shall be ISO metric screws having screw threads which are metric coarse and of medium fit in accordance with ISO965. Associated tapped holes shall comply with a 6H class of fit in accordance with ISO965. Fixing holes are clea
35、rance holes having diameters taken from the medium series of ISO273, and screws of corresponding size shall be used for mounting. Where slotted fixing holes are used, their width shall equal the stated value of G, and their length shall not exceed 1,8 G. All the listed dimensions in this standard ar
36、e in millimetres. 5.2 Stack heights A range of stack heights is specified, which allows continuous variations of power rating, although the square stack is preferred. The increment of stack height follows the R10 series of preferred numbers, as defined in ISO3, as a multiple of the width of the limb
37、s of the lamination. A suffix letter is used to designate the appropriate stack size as shown inTable 1. Table 1 Multiple of limb width The lamination designation followed by the appropriate suffix letter is used to designate the core. If stack heights other than the preferred square stack are used,
38、 these shall follow the figures given inTable 2, showing the stack heights S nomusing the multiple of limb width as shown inTable 1. Table 2 Stack height length width, height (A, B, C); positioning of mounting holes (D 1 , D 2 , D 3 ); fixing hole size (G); fixing screw size (M); stack height (S). S
39、uffix letter Multiple of limb width of lamination a 0,50 b 0,63 c 0,80 d 1,00 (square stack) e 1,25 f 1,60 g 2,00 Designation Stack height S nomfor suffix letter a b c d e f g YUI 2-10 5,0 6,5 8,0 10,0 12,5 16,0 20,0 YUI 2-13 6,5 8,0 10,5 13,0 16,5 21,0 26,0 YUI 2-16 8,0 10,0 13,0 16,0 20,0 25,5 32,
40、0 YUI 2-20 10,0 12,5 16,0 20,0 25,0 32,0 40,0 YUI 2-25 12,5 16,0 20,0 25,0 31,5 40,0 50,0 YUI 2-30 15,0 19,0 24,0 30,0 37,5 48,0 60,0 YUI 2-34 17,0 21,5 27,0 34,0 42,5 54,5 68,0 YUI 2-38 19,0 24,0 30,5 38,0 47,5 61,0 76,0 YUI 2-44 22,0 27,5 35,0 44,0 55,0 70,5 88,0 YUI 2-50 25,0 31,5 40,0 50,0 62,5
41、80,0 100,0 YUI 2-56 28,0 35,5 45,0 56,0 70,0 89,5 112,0 YUI 2-60 30,0 38,0 48,0 60,0 75,0 96,0 120,0 YUI 2-70 35,0 44,0 56,0 70,0 87,5 112,0 140,0 YUI 2-80 40,0 50,5 64,0 80,0 100,0 128,0 160,0EN60852-4:1996 BSI 11-1998 5 5.3 Tolerances The stack height is shown as nominal and is open to small varia
42、tions which can be compensated by slotted holes in the fixing brackets. The dimensions, except where indicated as maximum or nominal, shall have tolerances in accordance with the requirements of ISO286-1. NOTEThe appropriate tolerance is shown at the head of each column of dimensions in the followin
43、g tables. 6 Vertical mounting style The dimensions for the vertical mounting style shall be as given inTable 3, corresponding to the cores using, square stacks assembled from laminations YUI2-20d to YUI2-80d, in accordance with the outline drawing ofFigure 1. If stack heights other than the preferre
44、d square stack are used, these shall follow the R 10 series given inTable 1. In this case the appropriate dimensions are obtained by increasing or decreasing the values by the same amount as the stack height S is changed. 7 Level mounting style The dimensions for the level mounting style shall be as
45、 given inTable 4, Table 5 andTable 6, corresponding to cores using square stacks assembled from laminations YUI2-10d to YUI2-80d, in accordance with the outline drawings ofFigure 2,Figure 3 and Figure 4, respectively, according to whether the bracket, pillar or printed wiring board mounting version
46、is required. If stack heights other than the preferred square stack are used, these shall follow the R10 series given inTable 1. In this case the appropriate dimensions are obtained by increasing or decreasing the values by the same amount as the stack height S is changed. Figure 1 Vertical mounting
47、 style for transformers and inductors using YUI-2 laminations (coil former standard version and standard version with air duct)EN60852-4:1996 6 BSI 11-1998 Table 3 Dimensions for transformers and inductors using YUI-2 laminations, vertical mounting style-square stack, coil former standard version an
48、d standard version with air duct 7.1 Bracket mounting 7.2 Pillar mounting Mounting pillars shall be dimensioned so that they do not affect the overall height C. NOTEThe pillars may be supplied either tapped or drilled with suitable clearance holes, corresponding to the metric screw whose size is giv
49、en inTable 5. Where the pillars are drilled with clearance holes, for dimensions refer to column G instead of column M. Assembly designation ASB-IEC 852-4 A max B max a C max D 1 D 3 G M nom S nom IT12 IT12 JS14 YUI 2-20d-VS 148,0 118,0 68,0 136,0 48,0 4,8 M4 20,0 YUI 2-25d-VS 178,0 145,5 73,0 166,0 53,0 4,8 M4 25,0 YUI 2-30d-VS 219,0 177,0 99,0 201,0 69,0 7,0 M6 30,0 YUI 2-34d-VS 243,0 199,0 103,0 225,0 73,0 7,0 M6 34,0 YUI 2-38d-VS 267,0 221,0 107,0 249,0 77,0 7,0 M6 38,0 YUI 2-44d-
