1、 IEC 62491 Edition 1.0 2008-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial systems, installations and equipment and industrial products Labelling of cables and cores Systmes industriels, installations et appareils et produits industriels Etiquetage des cbles et des conducteurs isols IEC 6
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16、rvice clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62491 Edition 1.0 2008-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial systems, installations and equipment and industrial products Labelling of cables and cores Systmes industriels, installat
17、ions et appareils et produits industriels Etiquetage des cbles et des conducteurs isols INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 01.110; 29.020.20 PRICE CODE CODE PRIX ISBN 2-8318-9663-0 2 62491 IEC:2008 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2
18、 Normative references .7 3 Terms and definitions .8 4 Rules9 4.1 General requirements9 4.2 Use of designated cable cores.10 4.3 Use of additional labelling .10 5 Identification labelling.11 5.1 General .11 6 Connection labelling .14 6.1 General .14 6.2 Local-end connection labelling 14 6.3 Remote-en
19、d connection labelling.15 6.4 Both-end connection labelling16 7 Signal labelling.17 7.1 General .17 7.2 Labelling by signal designation17 7.3 Labelling of cables for certain designated conductors18 8 Composite labelling 19 9 Arrangement of additional labelling.20 9.1 General .20 9.2 Relative positio
20、ns of the labelling 20 9.3 Characters to be used .20 10 Correspondence between labelling and documentation.21 11 Conformance to this standard.21 Annex A (informative) Examples of labelling .22 Bibliography30 Figure 1 Example of identification labelling of a single core cable (W23) and of a multi-cor
21、e cable (W24) in which also the different cores are labelled 12 Figure 2 Example of identification labelling of cores where the initial part of the reference designation has been partly omitted13 Figure 3 Example of local-end connection labelling14 Figure 4 Example of remote-end connection labelling
22、 for a connection inside a unit.15 Figure 5 Example of remote-end connection labelling for a cable between different units .16 Figure 6 Example of both-end connection labelling 17 Figure 7 Example of local-end connection labelling combined with signal labelling.19 Figure 8 Example of composite label
23、ling in which both-end connection labelling is used together with identification labelling and signal labelling.19 Figure 9 Examples of arrangements of labelling on cores or cables. 20 Figure A.1 Circuit diagram used as a basis for the examples .22 62491 IEC:2008 3 Figure A.2 Example of identificati
24、on labelling.23 Figure A.3 Example of local-end labelling 24 Figure A.4 Example of both-end connection labelling .25 Figure A.5 Example of local end connection labelling with additional information .26 Figure A.6 Example of signal labelling .27 Figure A.7 Example of composite labelling.28 Figure A.8
25、 Example where use is made of the cable colours29 Table 1 Example of connection table in which the cable cores are identified by means of codes for their colour.10 Table 2 Connection table corresponding to Figure 1 with labelling .12 Table 3 Connection table corresponding to Figure 2 with labelling
26、.13 Table 4 Marking of certain designated conductors18 Table 5 Methods of labelling defined in this standard.21 4 62491 IEC:2008 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INDUSTRIAL SYSTEMS, INSTALLATIONS AND EQUIPMENT AND INDUSTRIAL PRODUCTS LABELLING OF CABLES AND CORES FOREWORD 1) The Internati
27、onal Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electroni
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36、s cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for iden
37、tifying any or all such patent rights. International Standard IEC 62491 has been prepared by IEC technical committee 3: Information structures, documentation and graphical symbols. The text of this standard is based on the following documents: CDV Report on voting 3/849/CDV 3/881/RVC Full informatio
38、n on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 62491 IEC:2008 5 The committee has decided that the contents of this publication will remain uncha
39、nged until the maintenance result date indicated on the IEC web site under “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. 6 62491 IEC:2008 INTRODUCTION Additional labell
40、ing of cables and cores might be required within larger systems or installations with many cores of the same colour or with many cables, and where therefore the use of the designations provided by the cable manufacturer only would be ambiguous. Due consideration should be given to the fact that addi
41、tional labelling will cause additional cost, usually increasing with the number of characters in the labelling string and the number of different labelling elements. The available space may also impose restrictions with regard to the number of characters, their height and the length of the labelling
42、. As a general rule the use of additional labelling should therefore be limited to a necessary minimum and be kept as short as practicable. However, also the advantages and benefits should be taken into considerations in choosing additional labelling of cables and cores. It is important to notice th
43、at a single machine or a system has different needs of information in the different phases of its lifecycles (assembling, production, service and maintenance). Additional labelling of cables and cores gives the following advantages: the possibilities to communicate and identify signals and connectio
44、ns across different involved engineering disciplines and departments like: process engineering, software engineering, electrical engineering, mechanical/fluid engineering, control engineering; minimizing the time used to locate an eventual error (and the reason for it) in the test phase; saving time
45、 when locating an eventual error (and the reason for it) in the service and maintenance phase; remove the doubt of which core should be connected to which terminal, when replacing components that are placed close to each other; if used in pre-planning, it gives a clear view for panel-builders, elect
46、ricians/technicians; service/maintenance and system controllers which will minimize misunderstandings regarding connections. Besides being used in connections between terminal blocks, labelling can also be used when single core cables connect components inside units as: cubicle, pulpit, case, etc.;
47、such methods make possible: a rapid and secure cabling between the terminals of two objects; a rapid visual check of cabling, not necessarily looking up in the circuit diagrams; a correct and secure change of an object during the maintenance operations of plants. 62491 IEC:2008 7 INDUSTRIAL SYSTEMS,
48、 INSTALLATIONS AND EQUIPMENT AND INDUSTRIAL PRODUCTS LABELLING OF CABLES AND CORES 1 Scope This standard provides rules and guidelines for the labelling of cables and cores/conductors used in industrial installations, equipment and products, in order to maintain a clear relation between the technica
49、l documentation and the actual equipment and for other purposes. The following methods are described and designated: use of coloured cables and designated cores; additional identification labelling; additional connection labelling; and additional signal labelling. The physical design of the labels, the material to be used for the labels as well as cable m
