1、BRITISH STANDARD BS EN 60917-2-1:1997 IEC 917-2-1: 1993 Modular order for the development of mechanical structures for electronic equipment practices Part 2: Sectional specification Interface co-ordination dimensions for the 25 mm equipment practice Section 1: Detail specification Dimensions for cab
2、inets and racks The European Standard EN 60917-2-1:1995 has the status of a British Standard ICS 31.240BSEN 60917-2-1:1997 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into eff
3、ect on 15 April 1997 BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference EPL/48/4 Draft announced in BSI Update April 1994 ISBN 0 580 27301 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Techn
4、ical Committee EPL/48, Electrotechnical components for electronic equipment, to Subcommittee EPL/48/4, Mechanical structures for electronic equipment, upon which the following bodies were represented: Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.) British
5、Telecommunications plc Federation of the Electronics Industry Amendments issued since publication Amd. No. Date CommentsBS EN 60917-2-1:1997 BSI 11-1998 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 60917-2-1 3 List of references Inside back cov
6、erBSEN 60917-2-1:1997 ii BSI 11-1998 National foreword This British Standard has been prepared by Subcommittee EPL/48/4, and is the English language version of EN 60917-2-1:1995 Modular order for the development of mechanical structures for electronic equipment practices Part2:Sectional specificatio
7、n Interface co-ordination dimensions for the 25 mm equipment practice Section 1: Detail specification Dimensions for cabinets and racks, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 917-2-1:1993, published by the International Electrote
8、chnical 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 from legal obligations. Cross-reference
9、s Publication referred to Corresponding British Standard HD 550 S1:1989 (IEC 916:1988) BS 7728:1994 Mechanical structures for electronic equipment. Terminology EN 60917 (IEC 917) BS EN 60917 Modular order for the development of mechanical structures for electronic equipment practices EN 60917-0:1992
10、 (IEC 917-0:1989) Part 0:1992 Guide for the users of IEC Publication 917 EN 60917-2:1994 (IEC 917-2:1992) Part 2:1994 Sectional specification. Interface co-ordination dimensions for the 25 mm equipment practice EN 60917-2-2:1996 (IEC 917-2-2:1994) Section 2:1997 Detail specification Dimensions for s
11、ubracks, chassis, backplanes, front panel and plug-in units Summary of pages This document comprises a front cover, an inside front cover, page i and ii, theENtitle page, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendm
12、ents incorporated. This will be indicated in the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60917-2-1 March 1995 ICS 31.020; 31.240 Descriptors: Interface co-ordination dimensions, 25 mm equipment practice, cabinets and racks English version Modular
13、 order for the development of mechanical structures for electronic equipment practices Part2:Sectionalspecification Interface co-ordination dimensions for the 25mm equipment practice Section 1: Detail specification Dimensions for cabinets and racks (IEC 917-2-1:1993) Ordre modulaire pour le dveloppe
14、ment des structures mcaniques pour les infrastructures lectroniques Partie 2: Spcification intermdiaire Dimensions de coordination pour les interfaces des infrastructures au pas de 25 mm Section 1: Spcification particulire Dimensions pour baies et btis (CEI 917-2-1:1993) Modulordnung fr die Entwickl
15、ung von Bauweisen fr elektronische Einrichtungen Teil 2: Strukturnorm Schnittstellen-Koordinationsmae fr die 25-mm-Bauweise Hauptabschnitt 1: Manorm Mae fr Schrnke und Gestelle (IEC 917-2-1:1993) This European Standard was approved by CENELEC on 1995-03-06. CENELEC members are bound to comply with t
16、he 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 concerning such national standards may be obtained on application to the Central Secretariat
17、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 into its own language and notified to the Central Secretariat has the same status as the offi
18、cial versions. CENELEC members are the national electrotechnical 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 Electrotechnic
19、al Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B 1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN 60917-2-1:1995 EEN 60917-2-1:1995 BSI 1998 2 Foreword The text of the In
20、ternational Standard IEC917-2-1:1993, prepared by SC48D, Mechanical structures for electronic equipment, of IECTC48, Electromechanical components and mechanical structures for electronic equipment, was submitted to the formal vote and was approved by CENELEC as EN60917-2-1 on 1995-03-06 without any
21、modification. The following dates were fixed: For products which have complied with the relevant national standard before1996-03-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until2001-03-01. Annexes designated “normative” ar
22、e part of the body of the standard. In this standard, annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 917-2-1:1993 was approved by CENELEC as a European Standard without any modification. Contents Page 1 Scope 3 2 Normative ref
23、erences 3 3 Arrangement overview 3 4 Dimensions 3 4.1 Cabinets 3 4.1.1 Type A cabinets 3 4.1.2 Type B cabinets 7 4.1.3 Terms and definitions 7 4.1.4 Tables for type A and B cabinets 8 4.2 Racks 8 5 Internal interface dimensions 8 Annex ZA (normative) Other international publications quoted in this s
24、tandard with the references of the relevant European publications 9 Figure 1 Example of a cabinet with subracks, front panels and attachments installed 4 Figure 2 Dimensions for type A cabinets 5 Figure 3 Dimensions for type B cabinets 8 Table 1 Height dimensions in millimeters 8 Table 2a Width dime
25、nsions in millimetres Cabinet version 1 8 Table 2b Width dimensions in millimetres Cabinet version 2 8 Table 3 Depth dimensions in millimetres 8 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1996-03-01 lat
26、est date by which the national standards conflicting with the EN have to be withdrawn (dow) 1996-03-01EN60917-2-1:1995 BSI 11-1998 3 1 Scope This section of IEC 917-2 is a detail specification which is to be used in whole or in part in all fields of electronics where devices and systems are designed
27、 according to the sectional specification IEC917-2. The dimensions in the tables of this detail specification are a selection from the sectional specification IEC917-2. All other sizes from the sectional specification are valid in this detail specification provided the relationship between the dimen
28、sions is maintained, i.e. the dimensional difference between the co-ordination dimensions H C , W Cand D Cand dimensions H C0 , H C1 , H C2 ; W C0 , W C1and D C0 , D C1shown in Table 1, Table 2 and Table 3 are to be maintained. The purpose of this publication is the specification of dimensions which
29、 will ensure mechanical interchangeability of cabinets and racks, and ensure mechanical interchangeability for subrack mounting. Cabinets and racks can be arranged together to form larger operating units. Application of specific cabinets or racks, attachments and accessories, such as heat exchangers
30、, control elements, switches, etc. does not form part of this specification. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this section of IEC917-2. At the time of publication, the editions indicated were v
31、alid. All normative documents are subject to revision, and parties to agreements based on this section of IEC917-2 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 val
32、id International Standards. IEC 916:1988, Mechanical structures for electronic equipment Terminology. IEC 917:1988, Modular order for the development of mechanical structures for electronic equipment practices. IEC 917-0:1989, Modular order for the development of mechanical structures for electronic
33、 equipment practices Part0: Guide for the users of IEC917. IEC 917-2:1992, Modular order for the development of mechanical structures for electronic equipment practices Part2: Sectional specification Interface co-ordination dimensions for the 25mm equipment practice. IEC 917-2-2:1993, Modular order
34、for the development of mechanical structures for electronic equipment practices Part2: Sectional specification Interface co-ordination dimensions for the 25mm equipment practice Section2:Detail specification practice dimensions for subracks, chassis, backplanes, front panels and plug-in units. (in p
35、reparation) 3 Arrangement overview For details of subracks and front panels, seeIEC917-2-2. 4 Dimensions The cabinet and rack dimensions for height, width and depth have been taken from the relevant tables in the sectional specification IEC917-2 (see4.1.1.1). The cabinets and racks do not need to co
36、nform with the figures illustrated; only the specified dimensions shall be used. In the case of unspecified dimensions and tolerances the manufacturer is free to choose according to his requirements. Two versions of racks and cabinets are tabulated in4.1.3 to permit both light-duty (version1) and ru
37、ggedized applications (version2). 4.1 Cabinets 4.1.1 Type A cabinets Type A cabinets shall contain within their outside dimensions all protrusions, e.g. covers, adjustable feet, permanently fitted lifting aids, etc. The use of mounting flanges is optional. 4.1.1.1 If other dimensions are used, then
38、they shall be taken from the sectional specification IEC 917-2. In such cases the relationship between co- ordination dimensions H C , W C , D Cand dimensions H C0 , H C1 , H C2 ; W C0 , W C1 , W C2 , W C3 ; D C0 , D C1shown in Table 1, Table 2, Table 3 shall be maintained. 4.1.1.2 When mounting fla
39、nges are used they have a preferred depth position as defined inFigure 2, detailX. Other or additional mounting flange positions to the front or near of the preferred position are to be on pitches of 25mm (n mp1). 4.1.1.3 The cabinet dimensions H C0 , W C0and D C0including all their tolerances shall
40、 be contained within the co-ordination dimensions H C , W Cand D C .EN60917-2-1:1995 4 BSI 11-1998 Figure 1 Example of a cabinet with subracks, front panels and attachments installedEN60917-2-1:1995 BSI 11-1998 5 Figure 2 Dimensions for type A cabinetsEN60917-2-1:1995 6 BSI 11-1998 Figure 3 Dimensio
41、ns for type B cabinetsEN60917-2-1:1995 BSI 11-1998 7 4.1.2 Type B cabinets Type B cabinets differ from type A cabinets in that protrusions such as covers, doors, hinges, handles, etc. are permitted beyond the heightH C0and depthD C0dimensions, within the dimensional limits indicated inFigure 3. 4.1.
42、3 Terms and definitions Heights Widths Depths H C = Co-ordination dimensions, see IEC 917-2 H C0 = Cabinet/rack height H C1 = Aperture co-ordination dimension, seeIEC 917-2 H C1= H C 10 25 mm H C2 = Mounting height aperture e.g. for subracks and front panels, etc. H C2= H C 10 25 mm + 2 mm (minimum
43、aperture) W C = Co-ordination dimensions, see IEC 917-2 W C0 = Cabinet/rack width W C1 = Mounting width aperture W C1= W C 2 25 mm (cabinet version 1) W C1= W C 4 25 mm (cabinet version 2) If mounting flanges are used, the aperture behind the mounting flanges may be increased by steps of n 5 mm up t
44、o W C1= W C0 W C2 = Aperture between mounting flanges, seeIEC 917-2-2 W C3 = Mounting hole distance for subrack and front panel mounting, see IEC 917-2-2 D C = Co-ordination dimensions, see IEC 917-2 D C0 = Cabinet/rack depth D C1 = Mounting depth aperture D C1= D C 2 25 mmEN60917-2-1:1995 8 BSI 11-
45、1998 4.1.4 Tables for type A and B cabinets Table 1 Height dimensions in millimetres Table 2awidth dimensions in millimetres Cabinet version 1 Table 2b Width dimensions in millimetres Cabinet version 2 Table 3 Depth dimensions in millimetres 4.2 Racks A rack differs from a cabinet by being an open s
46、tructure, without doors or covers, see IEC916. The outside dimensions of racks are the same as those for type A cabinets, see Figure 2 and 4.1.1. 5 Internal Interface dimensions To maintain interchangeability of e.g. subracks the internal dimensions D C1 , W C1 , W C2 , W C3and H C1of the cabinet or
47、 rack shall be used. H C a 800 1 000 1 200 1 400 1 600 1 800 2 000 2 200 H C00/5 800 1 000 1 200 1 400 1 600 1 800 2 000 2 200 H C1 550 750 950 1 150 1 350 1 550 1 750 1 950 H C2 552 752 952 1 152 1 352 1 552 1 752 1 952 a See 4.1.1.1. W C a 300 400 500 600 800 900 1 000 1 200 W C00/5 300 400 500 60
48、0 800 900 1 000 1 200 W C1+2/0 b 250 350 450 550 750 850 950 1 150 W C2 a Subrack dependent, see IEC 917-2-2 W C3 2 Subrack dependent, see IEC 917-2-2 a See 4.1.1.1. b Dimensions W C1for cabinet version 2 may be increased by steps of n 5 mm up to W C1= W C- 2 25 mm. W C a 300 400 500 600 800 900 1 0
49、00 1 200 W C00/5 300 400 500 600 800 900 1 000 1 200 W C1+2/0 b 200 300 400 500 700 800 900 1 100 W C2 a Subrack dependent, see IEC 917-2-2 W C32 Subrack dependent, see IEC 917-2-2 a See 4.1.1.1. b Dimensions W C1for cabinet version 2 may be increased by steps of n 5 mm up to W C1= W C- 2 25 mm. D C a 300 400 600 800 900 D C00/-5 300 400 600 800 900 D C1 250 350 550 750 850 a See 4.1.1.1.EN60917-2-1:1995 BSI 11-1998 9 Annex ZA (normative) Other intern
