BS-EN-62491-2008.pdf

raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI British Standards WB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1 raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI British Standards WB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1 Industrial systems, installations and equipment and industrial products Labelling of cables and cores BS EN 62491:2008 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 31 January 2009 raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI British Standards Licensed Copy: London South Bank University, South Bank University, 02/02/2009 05:36, Uncontrolled Copy, (c) BSI National foreword This British Standard is the UK implementation of EN 62491:2008. It is identi- cal to IEC 62491:2008. The UK participation in its preparation was entrusted to Technical Committee GEL/3, Documentation and graphical symbols. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. © BSI 200 ISBN 978 0 580 58257 8 ICS 01.110; 29.020; 29.060.20 Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. Date Text affected BRITISH STANDARDBS EN 62491:2008 9 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 31 January 2009 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 05:36, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 62491 NORME EUROPÉENNE EUROPÄISCHE NORM September 2008 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels © 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62491:2008 E ICS 01.110; 29.020.20 English version Industrial systems, installations and equipment and industrial products - Labelling of cables and cores (IEC 62491:2008) Systèmes industriels, installations et appareils et produits industriels - Etiquetage des câbles et des conducteurs isolés (CEI 62491:2008) Industrielle Systeme, Anlagen und Ausrüstungen und Industrieprodukte - Beschriftung von Kabeln / Leitungen und Adern (IEC 62491:2008) This European Standard was approved by CENELEC on 2008-07-01. CENELEC members are bound to comply with the 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 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 official versions. CENELEC members are the national electrotechnical 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 the United Kingdom. BS EN 62491:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 05:36, Uncontrolled Copy, (c) BSI EN 62491:2008 - 2 - Foreword The text of document 3/849/CDV, future edition 1 of IEC 62491, prepared by IEC TC 3, Information structures, documentation and graphical symbols, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62491 on 2008-07-01. 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) 2009-04-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-07-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62491:2008 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 60446 NOTE Harmonized as EN 60446:2007 (not modified). _ BS EN 62491:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 05:36, Uncontrolled Copy, (c) BSI - 3 - EN 62491:2008 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 cited 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 60445 (mod) -1) Basic and safety principles for man-machine interface, marking and identification - Identification of equipment terminals and conductor terminations EN 60445 20072) IEC 60757 -1) Code for designation of colours HD 457 S1 19852) IEC 61082-1 2006 Preparation of documents used in electrotechnology - Part 1: Rules EN 61082-1 2006 IEC 61175 -1) Industrial systems, installations and equipment and industrial products - Designation of signals EN 61175 20052) IEC 61666 -1) Industrial systems, installations and equipment and industrial products - Identification of terminals within a system EN 61666 19972) IEC 81346-1 200X3) Industrial systems, installations and equipment and industrial products - Structuring principles and reference designations - Part 1: Basic rules - - ISO/IEC 646 -1) Information technology - ISO 7-bit coded character set for information interchange - - 1) Undated reference. 2) Valid edition at date of issue. 3) To be published. BS EN 62491:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 05:36, Uncontrolled Copy, (c) BSI 2 62491 © IEC:2008 CONTENTS INTRODUCTION.6 1 Scope.7 2 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-end 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 positions 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-core 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 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 labelling 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 BS EN 62491:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 05:36, Uncontrolled Copy, (c) BSI 62491 © IEC:2008 3 Figure A.2 Example of identification 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 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 .13 Table 4 Marking of certain designated conductors18 Table 5 Methods of labelling defined in this standard.21 BS EN 62491:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 05:36, Uncontrolled Copy, (c) BSI 6 62491 © IEC:2008 INTRODUCTION Additional labelling 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 additional 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. 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 that 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 connections 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 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, electricians/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.; 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. BS EN 62491:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 05:36, Uncontrolled Copy, (c) BSI 62491 © IEC:2008 7 INDUSTRIAL SYSTEMS, 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 technical 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 manufacturers product bound marking of cables and cores are not part of this standard. 2 Normative 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 60445, Basic and safety principles for man-machine interface, marking and identification Identification of equipment terminals and conductor terminations IEC 60757, Code for designation of colours IEC 61082-1:2006, Preparation of documents used in electrotechnology Part 1: Rules IEC 61175, Industrial systems, installations and equipment and industrial products Designation of signals IEC 81346-1, Industrial systems, installations and equipment and industrial products Structuring principles and reference designations Part 1: Basic rules (to be published) IEC 61666, Industrial systems, installations and equipment and industrial products Identification of terminals within a system ISO/IEC 646, Information technology ISO 7-bit coded character set for information interchange BS EN 62491:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 05:36, Uncontrolled Copy, (c) BSI 8 62491 © IEC:2008 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 conductor (of a cable) part of a cable which has the specific function of carrying current IEV 461-01-01 3.2 cable assembly of one or more conductors and/or optical fibres, with a protective covering and possibly filling, insulating and protective material IEV 151-12-38 3.3 core assembly comprising a conductor with its own insulation (and screens if any) IEV 461-04-04 3.4 terminal conductive part of a device, electric circuit or electric network, provided for connecting that device, electric circuit or electric network to one or more external conductors IEV 151-12-12, modified 3.5 terminal block assembly of terminals in a housing or body of insulating material to facilitate interconnection between multiple conduc