1、 IEC 60917-2-4Edition 1.0 2010-03INTERNATIONAL STANDARD NORME INTERNATIONALEModular order for the development of mechanical structures for electronic equipment practices Part 2-4: Sectional specification Interface co-ordination dimensions for the 25 mm equipment practice Adaptation dimensions for su
2、bracks or chassis applicable in cabinets or racks in accordance with IEC 60297-3-100 (19 in) Ordre modulaire pour le dveloppement des structures mcaniques pour les infrastructures lectroniques Partie 2-4: Spcification intermdiaire Dimensions de coordination pour les interfaces des infrastructures au
3、 pas de 25 mm Dimensions dadaptation des bacs ou des chssis, applicables dans les baies ou les btis, conformment la CEI 60297-3-100 (19 pouces) IEC60917-2-4:2010 colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specifie
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18、NAL STANDARD NORME INTERNATIONALEModular order for the development of mechanical structures for electronic equipment practices Part 2-4: Sectional specification Interface co-ordination dimensions for the 25 mm equipment practice Adaptation dimensions for subracks or chassis applicable in cabinets or
19、 racks in accordance with IEC 60297-3-100 (19 in) Ordre modulaire pour le dveloppement des structures mcaniques pour les infrastructures lectroniques Partie 2-4: Spcification intermdiaire Dimensions de coordination pour les interfaces des infrastructures au pas de 25 mm Dimensions dadaptation des ba
20、cs ou des chssis, applicables dans les baies ou les btis, conformment la CEI 60297-3-100 (19 pouces) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE NICS 31.240 PRICE CODECODE PRIXISBN 2-8318-1084-0 Registered trademark of the International Electrotechnical Commi
21、ssion Marque dpose de la Commission Electrotechnique Internationale colourinside 2 60917-2-4 IEC:2010 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope and object6 2 Normative references .6 3 Arrangement overview (Figure 1) and definitions 7 4 Dimensions for adaptor flanges of the specific metric subracks
22、or chassis (suitable only where WS1= 425 mm) mountable into 19 in cabinets or racks.8 4.1 General .8 4.2 Dimensions for mounting holes arrangements on the adaptor flanges, mounting layout referred to the bottom pitch lines of the metric subracks or chassis8 4.3 Dimensions for mounting holes arrangem
23、ents on the adaptor flanges, mounting layout referred to the unit centre lines of the metric subracks or chassis10 Bibliography14 Figure 1 Arrangement overview Adaptation of specific subracks (aperture width for plug-in units: WS1= 425 mm, 85 5,0 mm) of IEC 60917-2-4 into cabinets of IEC 60297-3-100
24、 7 Figure 2 Mounting hole arrangements of the adaptor flanges, mounting layout referred to the bottom pitch lines of the metric subracks or chassis.8 Figure 3 Dimensions of mounting hole positions of the adaptor flanges, mounting layout referred to the bottom pitch lines of the metric subracks or ch
25、assis 9 Figure 4 Mounting hole arrangements on the adaptor flanges, mounting layout referred to the unit centre lines of the metric subracks or chassis .11 Figure 5 Dimensions of mounting holes positions of the adaptor flanges, mounting layout referred to the unit centre lines of the metric subracks
26、 or chassis.12 Table 1 Dimensions of mounting holes positions of the adaptor flanges, mounting layout referred to the bottom pitch lines of the metric subracks or chassis 10 Table 2 Dimensions of mounting holes positions of the adaptor flange, mounting layout referred to the unit centre lines of the
27、 metric subracks or chassis.13 60917-2-4 IEC:2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MODULAR ORDER FOR THE DEVELOPMENT OF MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT PRACTICES Part 2-4: Sectional specification Interface co-ordination dimensions for the 25 mm equipment practice Adaptati
28、on dimensions for subracks or chassis applicable in cabinets or racks in accordance with IEC 60297-3-100 (19 in) FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committee
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39、tandard IEC 60917-2-4 has been prepared by subcommittee 48D: Mechanical structures for electronic equipment, of IEC technical committee 48: Electromechanical components and mechanical structures for electronic equipment. 4 60917-2-4 IEC:2010 The text of this standard is based on the following docume
40、nts: FDIS Report on voting 48D/420/FDIS 48D/424/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. A list of all parts of IEC 60917 series, under the general title Modular order for the development of mechanical str
41、uctures for electronic equipment practices, can be found on the IEC website. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability indicated on the IEC web site un
42、der “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are co
43、nsidered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 60917-2-4 IEC:2010 5 INTRODUCTION The IEC 60917 series of standards provides definitions of mechanical structure and dimensions for metric cabinets, racks, subracks
44、, chassis and plug-in units based on metric modular ordered dimensions. The later developed IEC 60917 series of standards, compared to IEC 60297, provides more logical design practices based on metric dimensioning. The IEC 60297 series of standards also define structures and interface dimensions for
45、 19 in cabinets, racks and their compatible subracks and chassis. Because of the longer history of the IEC 60297 series of standards and their applications, the combination of 19 in based cabinets, racks, subracks and chassis are broadly applied for all industrial electronic fields in the world. Req
46、uests for combined applications with both mechanical structures, the IEC 60917 series (metric standard) and the IEC 60297 series (19 in standard), resulted in requirements to mount metric subracks or chassis into 19 in standard cabinets or racks and, vice versa, 19 in subracks or chassis into metric
47、 cabinets or racks. To cope with the requirements and needs, it is required to develop definitions for appropriate adaptation dimensions of flanges for metric or 19 in subracks or chassis to mount them into cabinets or racks in accordance with 19 in or metric standard. And the definitions of adaptat
48、ion dimensions bring economical solutions for installations of electronic equipment into existing cabinets or racks. Further, they provide guidance to electro-mechanical designers to develop systems suitable to be mounted into both IEC standard series flexibly. To meet such market needs, this standa
49、rd defines adaptation dimensions for metric subracks or chassis applicable for 19 in cabinets or racks. (Dimensions for the applications, where 19 in subracks or chassis are mounted on metric cabinets or racks, are defined in a separate standard, i.e. IEC 60297-3-106.) 6 60917-2-4 IEC:2010 MODULAR ORDER FOR THE DEVELOPMENT OF MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT PRAC
