1、Mechanical structures forelectronic equipment Dimensions of mechanicalstructures of the 482,6 mm(19 in) series Part 3-105: Dimensions and design aspects for1U high chassisBS EN 60297-3-105: 2009raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Briti
2、sh StandardsNational forewordThis British Standard is the UK implementation of EN 60297-3-105:2009. It isidentical to IEC 60297-3-105:2008.The UK participation in its preparation was entrusted to Technical CommitteeEPL/48, Electromechanical components and mechanical structures for elec-tronic equipm
3、ent.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2009ISBN 978 0 580 58287 5ICS 31.240Compliance with a Br
4、itish Standard cannot confer immunity fromlegal obligations.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60297-3-105:2009This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on February 2009.2 8EUROPEAN STANDARD
5、EN 60297-3-105 NORME EUROPENNE EUROPISCHE NORM January 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rig
6、hts of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60297-3-105:2009 E ICS 31.240 English version Mechanical structures for electronic equipment - Dimensions of mechanical structures of the 482,6 mm (19 in) series - Part 3-105: Dimensions and design a
7、spects for 1U high chassis (IEC 60297-3-105:2008) Structures mcaniques pour quipements lectroniques - Dimensions des structures mcaniques de la srie 482,6 mm (19 pouces) - Partie 3-105: Dimensions et aspects de conception pour les chssis dune hauteur de 1U (CEI 60297-3-105:2008) Bauweisen fr elektro
8、nische Einrichtungen - Mae der 482,6-mm-(19-Zoll-)Bauweise - Teil 3-105: Mae und Ausfhrungen von 1U-Einschben (IEC 60297-3-105:2008) This European Standard was approved by CENELEC on 2008-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditi
9、ons 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 thre
10、e 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 electrotechnica
11、l committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and t
12、he United Kingdom. BS EN 60297-3-105:2009EN 60297-3-105:2009 - 2 - Foreword The text of document 48D/381/FDIS, future edition 1 of IEC 60297-3-105, prepared by SC 48D, Mechanical structures for electronic equipment, of IEC TC 48, Electromechanical components and mechanical structures for electronic
13、equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60297-3-105 on 2008-12-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-09-
14、01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-12-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60297-3-105:2008 was approved by CENELEC as a European Standard without any modification. _
15、 BS EN 60297-3-105:2009- 3 - EN 60297-3-105:2009 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition ci
16、ted applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60050-581 -1)
17、International Electrotechnical Vocabulary (IEV) - Part 581: Electromechanical components for electronic equipment - - IEC 60297-3-100 -1)Mechanical structures for electronic equipment - Dimensions of mechanical structures of the 482,6 mm (19 in) series - Part 3-100: Basic dimensions of front panels,
18、 subracks, chassis, racks and cabinets EN 60297-3-100 20092)IEC 60917-1 -1)Modular order for the development of mechanical structures for electronic equipment practices - Part 1: Generic standard EN 60917-1 19982)IEC 61587-1 -1)Mechanical structures for electronic equipment - Tests for IEC 60917 and
19、 IEC 60297 - Part 1: Climatic, mechanical tests and safety aspects for cabinets, racks, subracks and chassis EN 61587-1 20072)IEC 61587-2 -1)Mechanical structures for electronic equipment - Tests for IEC 60917 and IEC 60297 - Part 2: Seismic tests for cabinets and racks EN 61587-2 20012)IEC 61587-3
20、-1)Mechanical structures for electronic equipment - Tests for IEC 60917 and IEC 60297 - Part 3: Electromagnetic shielding performance tests for cabinets, racks and subracks EN 61587-3 20062)1)Undated reference. 2)Valid edition at date of issue. BS EN 60297-3-105:2009 2 60297-3-105 IEC:2008 CONTENTS
21、INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 Arrangement overview7 5 Dimensions of the 1U chassis.9 5.1 Chassis type A 9 5.2 Chassis type B 10 5.3 Chassis type C 11 6 Climatic, mechanical tests (safety aspects, EMC, seismic) .12 Annex A (informative) Chassis and ra
22、ck/cabinet relationship .13 Annex B (informative) Cooling air flow .15 Annex C (informative) Chassis depth relationship to the rack/cabinet 16 Figure 1 Chassis type A.8 Figure 2 Chassis type B.8 Figure 3 Chassis type C.8 Figure 4 Dimensions of chassis type A.9 Figure 5 Dimensions of chassis type B.1
23、0 Figure 6 Dimensions of chassis type C 11 Figure A.1 Chassis type B and rack/cabinet relationship 13 Figure A.2 Chassis type C rack/cabinet relationship.14 Figure B.1 Cooling airflow direction15 Table C.1 Maximum depth D in relation to corresponding cabinet depth.16 BS EN 60297-3-105:200960297-3-10
24、5 IEC:2008 5 INTRODUCTION Electronic systems based on 1U chassis design have become one of the most important platforms used for servers, industrial electronics, information technology (IT) and telecommunication equipment. 1U chassis are sometimes referred to as “Pizza Boxes”. Applications for 1U ch
25、assis designs are wide spread and solutions are found in every segment of the electronics industry. IEC 60297-3-100 defines the dimensional rack/cabinet details such as the available aperture and the front panel mounting dimensions. However, IEC 60297-3-100 falls short of providing guidance or dimen
26、sional requirements for assembling 1U chassis designs into these IEC 60297 conforming racks/cabinets either in singles or in multiples (stacked in n 1U). This part of IEC 60297 will give guidance and provide for dimensional requirements for 1U chassis based on weight loading, physical size and servi
27、ce accessibility. In this standard, various chassis types are identified according to application needs. The defined interface dimensions of the various chassis types permit the development of common mounting accessories. Due to this clarification and the application specific chassis type choice, th
28、e serviceability and airflow aspects of the chosen 1U chassis can be addressed by the designer. Similar attributes for multiple unit high equipment may be derived from this standard. The economical value of this standard lies in the predefined interface dimensions of chassis for which suitable acces
29、sories may be developed. In addition, as a consequence of the chosen mounting support, the cooling possibilities are indicated. BS EN 60297-3-105:2009 6 60297-3-105 IEC:2008 MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT DIMENSIONS OF MECHANICAL STRUCTURES OF THE 482,6 mm (19 in) SERIES Part 3-105:
30、Dimensions and design aspects for 1U high chassis 1 Scope This part of IEC 60297 specifies the dimensions for 1U chassis mounted into IEC 60297-3-100 compliant racks/cabinets where dimensions, loaded weight and accessibility require differing assembly methods. Guidance for cooling and reference for
31、EMC, seismic and for the climatic and mechanical requirements and tests are provided, as defined in the IEC 61587 series. The drawings used in this standard are not intended to indicate product design, only the specific dimensions shall be used. The terminology used complies with IEC 60917-1. 2 Norm
32、ative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050-581, International ele
33、ctrotechnical vocabulary Part 581: Electromechanical components for electronic equipment IEC 60917-1, Modular order for the development of mechanical structures for electronic equipment practices Part 1: Generic standard IEC 60297-3-100, Mechanical structures for electronic equipment Dimensions of m
34、echanical structures of the 482,6 mm (19 in) series Part 3-100: Basic dimensions of front panels, subracks, chassis, racks and cabinets IEC 61587-1, Mechanical structures for electronic equipment Tests for IEC 60917 and IEC 60297 Part 1: Climatic, mechanical tests and safety aspects for cabinets, ra
35、cks, subracks and chassis IEC 61587-2, Mechanical structures for electronic equipment Tests for IEC 60917 and IEC 60297 Part 2: Seismic tests for cabinets and racks IEC 61587-3, Mechanical structures for electronic equipment Tests for IEC 60917 and IEC 60297 Part 3: Electromagnetic shielding perform
36、ance tests for cabinets, racks and subracks 3 Terms and definitions For the purposes of this document, the terms and definitions of IEC 60917-1 and IEC 60050-581 apply, as well as the following. BS EN 60297-3-105:200960297-3-105 IEC:2008 7 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 19 in cabinet cabinet in
37、 accordance with IEC 60297-3-100 19 in vertical members parts of a cabinet with the mounting holes for front panels, chassis and subracks chassis slides angled parts mounted in the cabinet to support heavy or deep chassis (see also IEC 60917-1) telescopic slide extendable mounting support for heavy
38、or deep chassis within a cabinet, providing easy access to rear parts in extended position of the chassis aperture of a cabinet horizontal opening dimension between two 19 in uprights height pitch line theoretical line between any increment of U (1U = 44,45 mm) cable management cable routing within
39、a cabinet to the equipment chassis mounting flanges may be an integrated part of the chassis or separate brackets attached to the chassis cable pull factor summary of cable weight, linked to the chassis 4 Arrangement overview The arrangement overview in Figure 1 illustrates the chassis mounting meth
40、ods into a typical 19 in cabinet. The 1U chassis dimensions differ pending on the choice of the chassis type and resulting mounting dimensions. There are three types of chassis, determined by the principal methods of mounting into a cabinet. The definitions of the three types of chassis are: Chassis
41、 type A: This type of chassis is mounted into racks/cabinets without chassis supports (light weight, shallow equipment with low cable pull factor, IEC 61587-1 DL 1 shock/vibration environment). For the assembly into cabinets only, the chassis mounting flanges are bolted to the 19 in uprights. This t
42、ype of chassis provides the maximum use of the available width and heights within a 1U section. See Figure 1. Chassis type B: This type of chassis is designated for equipment with higher load (high rear cabling pull factor, IEC 61587-1 DL 1 shock/vibration environment). Therefore, chassis slides sha
43、ll be used. The chassis design shall provide recessed areas as a space for the cabinet mounted chassis slides. See Figure 2. BS EN 60297-3-105:2009 8 60297-3-105 IEC:2008 Chassis type C: This type of chassis is designated for extendable equipment mounted on telescopic slides (top cover and/or rear I
44、/O access via rear cable management, IEC 61587-1 DL 1 environment). Telescopic slides may be of two or three parts, dependent on the extension requirement. The chassis design shall provide on both sides recessed areas dependent on the required space for the telescopic slides. NOTE There is no standa
45、rd for telescopic slides, mounting dimensions should be defined by the equipment design. See Figure 3. 19 in vertical member1U chassis IEC 2064/08 Figure 1 Chassis type A 19 in vertical memberChassis slide1U chassis IEC 2065/08 Figure 2 Chassis type B 19 in vertical member 1U chassis Telescopic slid
46、e IEC 2066/08 Figure 3 Chassis type C BS EN 60297-3-105:200960297-3-105 IEC:2008 9 5 Dimensions of the 1U chassis IEC 60297-3-100 defines the front panel dimensions and the aperture of the rack/cabinet. 5.1 Chassis type A This type of chassis is typically of either light weight, limited depth and/or
47、 has a very low cable pull factor. Therefore, the centre of gravity is relatively close to the chassis front panel where the chassis mounting screws to the rack/cabinet uprights are located. Figure 4 illustrates the recommended chassis dimensions utilizing the maximum available cabinet aperture dime
48、nsion for a 1U chassis. The maximum cable pull factor is to be considered in addition to the maximum weight. The mounted chassis vertical deflection shall not pass over the theoretical rack/cabinet height pitch line. The maximum width as shown in Figure 4 includes any attached mounting flanges as we
49、ll as mounting screws. Top view 449 D Missing dimensions (see IEC 60297-3-100) 31,75 0,4 5,9 0,4 43,65 0,4 44,45 Height pitch line 13,5 0,4 482,6 0,4 (19 in)Hole dimensions (see IEC 60297-3-100) Front view 465,1 1,6IEC 2067/08Dimensions in millimetres Figure 4 Dimensions of chassis type A BS EN 60297-3-105:2009 10 60297-3-105 IEC:2008 5.2 Chassis type B For the type B chassis as shown in Figure 5 the chassis height dim
