1、BRITISH STANDARD Modular order for the development of mechanical structures for electronic equipment practices Part 2. Sectional specification - Interface co-ordination dimensions for Le 25 mm equipment practice Section 1. Detail specification - Dimensions for cabinets and racks The European Stanard
2、 EN 60917-2-1 : 1995 has the status of a British Standard ICs 31.240 BS EN 60917-2-1 : 1997 IEC 917-2-1 : 1993 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW - STD.BS1 BS EN b0717-2-1-ENGL 1777 M LbZLibbS b07397 b5 m BS EN 60917-2-1 : 1997 Committees responsible for this Brit
3、ish Standard The preparation of this British Standard was enlmsted by Technical Committee EPU4.8, Electrotechnical components for electronic equipment, to Subcommittee EPUW4, Mechanical structures for electronic equipment, upon which the foilowing bodies were represented: Association of Manufactums
4、Ailied to the Electsical and Electronic Industry British Telecommunications plc Federation of the Electronics Industsy (BEAMA LM) This British Standard, having been prepared under the direction of the Elecwotechnical Sector Board, was published under the authority of the Standards Board and comes in
5、to effect on 16 April 1997 O BSI 1997 Amendments issued since publication AmdNo. ID only the specified dimensions shaI1 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 in
6、4.1.3 to permit both light-duty (version 1) and ruggedized applications (version 2). 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 op
7、tional. 4.1.1.1 If other dimensions are used, then they shall be taken from the sectional specification IEC 917-2. In such cases the relationship between coordination dimensions Hc, Wc and Dc and dimensions Hco, Hcr, Hc2; Wco, Wei, Wc2, Wc3; Dto, Dci shown in tables 1.2 and 3 shall be maintained. 4.
8、1.1.2 When mounting flanges are used they have a preferred depth position as defined in figure 2, detail X. Other or additional mounting flange positions to the front or near of the preferred position are to be on pitches of 25 mm (n x mpl). 4.1 .1.3 The cabinet dimensions Ifco, Wco and co including
9、 all their tolerances shall be contained within the co-ordination dimensions He, We and Dc. * rn * Fastening points female M6 (for wbracks. iront panels, etc.) P Page 7 EN 60917-2-1 : 1995 “ I Mounting flange preferred position, see 4.1.1.2 Additionai 01 aiternative mounting tlsnge position. see 4.1
10、.f.2 Side panel First angle projection c I t WCl Section detail X Section detail A Alternative See4.1.1.3 Figure 2 - Dimensions for type A cabinets STD-BSI BS EN b0717-2-1-ENGL 1777 1bZGb7 Ob07407 834 W Page 8 EN 60917-2-1 : 1996 4.1 -2 Type B cabinets Type 8 cabinets differ from type A cabinets in
11、that protrusions such as covers, doors, hinges, handles, etc. are permmed beyond the heigM Hco and depth Dc0 dimensions, within the dimensional limits indicated in figure 3. Raised top cover, i 7 Rear cover. door. etc. SI “1 VI Fint angle D projection ia IIIUILI Figure 3 - Dimensions for type 8 cabi
12、nets Page 9 EN 60917-2-1 : 1995 800 lo00 1200 1400 1600 1800 2000 wco 01-5 800 loo0 1200 1400 1600 1800 2000 550 750 950 1150 1350 1550 1750 Hc HCl “c2 552 752 952 1152 1352 1552 1752 4.1.3 Terms and definitions 2200 2200 1950 1952 Heights Hc Hco = Cabinethack height Hcl Hc2 = Coordination dimension
13、s, see iEC 917-2 = Aperture coordination dimension, see IEC 91 7-2 Hcl = Hc- 10 x 25 mm = Mounting height aperture e.g. for subracks and front panels, etc. Hc2 = Hc - 10 x 25 mm + 2 mm (minimum aperture) Widths Wc Wco = Cabinethack width Wc, - Mounting width aperture = Coordination dimensions, see I
14、EC 917-2 Wcl = Wc - 2 x 25 mm (cabinet version 1) Wcl = Wc - 4 x 25 mm (cabinet version 2) If mounting flanges are used, the aperture behind the mounting flanges may be increased by steps of n x 5 mm up to Wcl P Wco = Aperture between mounting flanges, see IEC 917-2-2 = Mounting hole distance for su
15、brack and front panel mounting, see 1EC 917-2-2 Wc2 Wca Depths Oc oco = Cabinethack depth Ocl = Mounting depth aperture = Co-ordination dimensions, see IEC 91 7-2 Dc, = Dc - 2 x 25 mm 4.1.4 Tables for type A and B cabinets Table 1 - Height dimensions in millimetres STDmBSI BS EN bO717-2-1-ENGL 1797
16、m 1b24bb9 b07407 b07 m 300 400 500 600 800 900 1 o00 1200 WC * wco 01-5 300 400 500 600 800 900 lo00 1200 Wcl +mg* 200 300 400 500 700 800 900 1100 wc2 ? I wc3 *2 I Subrack dependent, see IEC 917-2-2 Subrack dependent. see IEC 91 7-2-2 1 I Page 10 EN 60917-2-1 : 1995 Dc Dco 01-5 DCl 2 Table 2a - Wid
17、th dimensions in millimetres Cabinet version 1 800 900 300 400 600 900 800 300 400 600 250 350 550 850 750 Table 2b - Width dimensions in millimetres Cabinet version 2 -4.1.1.1. * Dimensions W , foi cabinet version 2 may be increased by steps of n Y 5 mm up to wC, 3 wC - 2 x 2fmm. Table 3 - Depth di
18、mensions in millimetres See 4.1.1.1. Page 11 EN 60917-2-1 : 1995 4.2 Racks A rack differs from a cabinet by being an open structure, without doors or covers, see IEC 916. The outside dimensions of racks are the same as those for type A cabinets, see figure 2 and 4. .1. 5 Internal Interface dimension
19、s To maintain interchangeability of e.g. subracks the internal dimensions DCi , WCi , Wc., Wc3 and Hoof the cabinet or rack shall be used. * cf3 * STD-BSI BS EN b0717-2-1-ENGL 1777 Lb24bb7 Ob07qLL 2b5 Page 12 EN 60917-2-1 : 1996 ANNEX ZA normative) OTHER INTERNATIONAL PUBLICATIONS QUOTED IN THIS STA
20、NDARD UITH THE REFERENCES OF THE RELEVANT EUROPEAN PUBLICATIOIS This European Standard incorporates by dated or undated reference, provisions fro other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated refere
21、nces, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by anendaent or revision. For undated references the latest edition of the publication referred to applies. NOTE : When the international publication has been modifie
22、d by CENELEC common modifications, indicated by (nod), the relevant EN/HD applies. I EC Publication Date Title ENIHD 916 1988 Mechanical structures for electronic HD 550 S1 917 1988 Modular order for the development of EN 60917 - - - - equipment - Terminology sechanical structures for electronic equ
23、ipment practices 917-0 1989 Part O: Guide for the users of EN 60917-0 IEC 917 917-2 1992 Part 2: Sectional specification EN 60917-2 Interface Co-ordination dimensions for the 25 mm equipment practice 917-2-2 1994 Section 2: Oetail specification - Dimensions for subracks, chassis, backplanes, front p
24、anels and plug-in units Date 1989 - 1990 1992 1994 STD-BSI BS EN bO917-2-L-ENGL 1997 E Lb24bb9 Ob074L2 LTL E BS EN 60917-2-1 1997 List of references See national foreword. O ES1 1997 STD* BSI BS EN 60917-2-1 : 1997 IEC 917-2-1 : 1993 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards I
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