BRITISH STANDARD BS EN 60719 1993 IEC 719 1992 Calculation of the lower and upper limits for the average outer dimensions of cables with circular copper conductors and of rated voltages up to and incl[.]
BRITISH STANDARD Calculation of the lower and upper limits for the average outer dimensions of cables with circular copper conductors and of rated voltages up to and including 450/750 V — The European Standard EN 60719:1993 has the status of a British Standard UDC 621.315.2.001.24:621.315.61:621.3.022 BS EN 60719:1993 IEC 719:1992 BS EN 60719:1993 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Belgium Denmark Finland France Germany Greece Iceland Ireland Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland United Kingdom This British Standard, having been prepared under the direction of the Cables and Insulation Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on Amendments 15 November 1993 © BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference CIL/20 Special announcement in BSI News, September 1993 ISBN 580 22591 Amd No issued since publication Date Comments BS EN 60719:1993 Contents Page Cooperating organizations Inside front cover National foreword ii Foreword General 1.1 Scope 1.2 Normative references Lower limit for the average outer diameter 3 Upper limit for the average outer diameter 4 Thickness of the mandatory coverings other than the insulation and the sheath(s) Annex ZA (normative) Other international publications quoted in this standard with the references of the relevant European publications National annex NA (informative) Committees responsible Inside back cover Table — Diameter of circular copper conductors for cables for fixed wiring Table — Diameter of circular copper conductors for flexible cables and cords © BSI 09-1999 i BS EN 60719:1993 National foreword This British Standard has been prepared under the direction of the Cables and Insulation Standards Policy Committee and is the English language version of EN 60719:1993 Calculation of the lower and upper limits for the average outer dimensions of cables with circular copper conductors and of rated voltages up to and including 450/750 V, published by the European Committee for Electrotechnical Standardization (CENELEC) It is identical with IEC 719:1992 published by the International Electrotechnical Commission (IEC) Related British Standards to IEC 502 are BS 5467:1989 and BS 6622:1991 However, neither of these British Standards contains the specific part of IEC 502, namely Appendix A The fictitious calculation method for determination of dimensions of protective coverings The foreword of EN 60719 makes reference to the “date of withdrawal” (dow) of the relevant national standard In this case, there is no relevant British Standard A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application Compliance with a British Standard does not of itself confer immunity from legal obligations Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages to 6, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover ii © BSI 09-1999 EUROPEAN STANDARD EN 60719 NORME EUROPÉENNE August 1993 EUROPÄISCHE NORM UDC 621.315.2.001.24:621.315.61:621.3.022 Descriptors: Electric cable, low voltage equipment, flexible cable, flexible conductor, dimension measure, minimum value, maximum value, calculation English version Calculation of the lower and upper limits for the average outer dimensions of cables with circular copper conductors and of rated voltages up to and including 450/750 V (IEC 719:1992) Calcul des valeurs minimales et maximales des dimensions extérieures moyennes des conducteurs et câbles âmes circulaires en cuivre et de tension nominale au plus égale 450/750 V (CEI 719:1992) m o c Berechnung der unteren und oberen Grenzen der mittleren Außenmaße von Leitungen mit runden Kupferleitern und Nennspannungen bis 450/750 V (IEC 719:1992) f z b w x w ww This European Standard was approved by CENELEC on 1993-07-06 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom 网 享 分 标准 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 © 1993 Copyright reserved to CENELEC members Ref No EN 60719:1993 E EN 60719:1993 Foreword At the request of the CENELEC Technical Committee TC 20, Electric cables, the International Standard IEC 719:1992 was submitted to the CENELEC Unique Acceptance Procedure (UAP) in September 1992 for acceptance as a European Standard The text of the International Standard was approved by CENELEC as EN 60719 on July 1993 The following dates were fixed: — latest date of publication of an identical national standard (dop) 1994-03-01 — latest date of withdrawal of conflicting national standards (dow) 1994-03-01 Annexes designated “normative” are part of the body of the standard In this standard, Annex ZA is normative m o c 网 享 分 f z b w x w ww 标准 © BSI 09-1999 EN 60719:1993 General 1.1 Scope This International Standard specifies a method for calculation of the lower and upper limits for the average outer diameter of cables and the outer dimensions of flat cords with circular copper conductors and of rated voltages up to and including 450/750 V This standard is not applicable to mineral insulated cables The method shall not be used to calculate the diameter over the core assembly for determining the sheath thickness; the method given in Appendix A of IEC 502 shall be used for this purpose NOTE It is stressed that the conductor diameters given in the tables are intended only for use in this standard as a basis for calculation and are not intended for verification by measurement NOTE The factors given in 2.5 and 3.1 of this standard may be varied in preparing standards for cables in which the number of cores, the hardness of the insulation, precise positioning of the conductors or other factors may affect the dimensional tolerances permissible 1.2 Normative references The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard At the time of publication, the edition indicated was valid All normative documents are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document listed below Members of IEC and ISO maintain registers of currently valid International Standards IEC 502:1983 Extruded solid dielectric insulated power cables for rated voltages from kV up to 30 kV 网 享 分 Lower limit for the average outer diameter 2.1 Take as diameter D of the conductor the value given in Table or Table respectively for cables for fixed wiring and for flexible cables and cords 2.2 Calculate the nominal diameter over the core by adding to the appropriate value of the conductor diameter, obtained as in 2.1, twice the specified mean value of the thickness of the insulation and of any other mandatory coverings of the individual core 2.3 Calculate the nominal diameter over the core assembly by multiplying the value obtained in 2.2 by the appropriate value of the assembly coefficient k, given in the following table: Number of cores © BSI 09-1999 Assembly coefficient k Number of cores f z b w ww 标准 7a 8a 9a 10 10a 11 12 12a 13 14 15 16 17 18 18a 19 20 21 22 23 a Cores 2,00 2,16 2,42 2,70 3,00 3,00 3,35 3,45 3,66 3,80 4,00 4,00 4,40 4,00 4,16 5,00 4,41 4,41 4,70 4,70 5,00 5,00 7,00 5,00 5,33 5,33 5,67 5,67 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 52 61 m o c w x 6,00 6,00 6,00 6,15 6,41 6,41 6,41 6,70 6,70 6,70 7,00 7,00 7,00 7,00 7,33 7,33 7,33 7,67 7,67 7,67 8,00 8,00 8,00 8,00 8,15 8,41 9,00 assembled in one layer 2.4 Calculate the nominal outer diameter Do of the finished cable by adding to the value obtained in 2.3 twice the specified mean value of the thickness of the sheath (or sheaths) and of the other mandatory coverings, if any, over the core assembly (see clause 4) 2.5 The lower limit Dmin of the average outer diameter is obtained by multiplying Do by the factor given: w w for circular multi-core cables with class or Dmin = 0,96 Do – 0,3 mm class conductors for all other constructions Dmin = 0,96 Do mm Assembly coefficient k EN 60719:1993 In each case, the value so obtained shall be rounded off: — to the nearest first decimal for values less than 50 mm; — to the nearest unit for values equal to or exceeding 50 mm If the last figure to be retained is followed, before rounding, by 0, 1, 2, or 4, it shall remain unchanged (rounding down) If the last figure to be retained is followed, before rounding, by 9, 8, 7, or 5, it shall be increased by one (rounding up) Examples: calculated value = 2,449 Dmin = 2,4 calculated value = 2,494 Dmin = 2,5 calculated value = 50,27 Dmin = 50 calculated value = 50,61 Dmin = 51 Metal braid Longitudinally applied metal tape with overlap 1,5 times thickness of in combination with the component tape in drain wires millimetres Table — Diameter of circular copper conductors for cables for fixed wiring Nominal cross-sectional area mm2 0,5 0,75 1,5 2,5 10 Upper limit for the average outer diameter 3.1 The upper limit Dmax of the average outer diameter is calculated to two decimal places using the nominal outer diameter Do obtained in 2.4 as follows: for rubber cables, Dmax = Do × 1,2 mm for PVC cables, Dmax = Do × 1,16 mm Dmax is rounded off in the same way as Dmin (see 2.5) 网 享 分 The following values shall be used unless otherwise specified in the cable standard: 0,08 mm 0,15 mm 0,15 mm a Class Nominal diameter of conductora for calculation mm Nominal diameter of conductora for calculation mm 0,80 0,95 1,10 1,35 1,75 2,2 2,7 3,5 0,85 1,05 1,20 1,45 1,85 2,35 2,9 3,8 w x m o c 4,4 5,6 6,5 4,7 6,0 7,0 50 70 95 7,6 9,1 10,7 8,2 9,8 11,5 120 150 185 12,0 13,4 13,0 14,4 16,1 16 25 35 coverings other than the insulation and the sheath(s) Class f z b w ww 准 标 Thickness of the mandatory Film separator between conductor and insulation Proofed textile type, textile braid round each core Film separator over laid up cores Proofed textile tape separator over laid up cores Separator between two layers of a sheath Outer textile braid 2,5 times diameter of the component wire in millimetres 240 300 400 18,5 20,7 23,4 500 630 800 000 26,2 29,8 33,8 37,9 See note in 1.1 0,15 mm 0,15 mm 0,30 mm © BSI 09-1999 EN 60719:1993 Table — Diameter of circular copper conductors for flexible cables and cords Classes and Nominal cross-sectional area Nominal diameter of conductora for calculation mm2 mm 0,5 0,75 0,95 1,10 1,25 1,5 2,5 1,50 1,95 2,50 10 16 3,0 3,9 5,0 25 35 50 6,4 7,7 9,2 70 95 120 150 185 240 11,0 12,5 14,2 15,8 17,5 20,1 300 400 500 630 22,5 25,8 29,0 33,7 a 网 享 分 See note in 1.1 m o c f z b w x w ww 标准 © BSI 09-1999 EN 60719:1993 Annex ZA (normative) Other international publications quoted in this standard with the references of the relevant European publications When the international publication has been modified by CENELEC common modifications, indicated by (mod), the relevant EN/HD applies IEC publication Date Title EN/HD Date 502 1983 Extruded solid dielectric insulated power cables for rated voltages from kV up to 30 kV — — m o c f z b 网 享 分 w x w ww 标准 © BSI 09-1999 BS EN 60719:1993 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Cables and Insulation Standards Policy Committee (CIL/-) to Technical Committee CIL/20, upon which the following bodies were represented: Association of Consulting Engineers Association of Manufacturers of Domestic Electrical Appliances BECCAMA (BEAMA Electrical Cable Conductor Accessory Manufacturers’ Association) British Approvals Service for Cables British Cable Makers’ Confederation British Plastics Federation British Steel Industry Department of Trade and Industry (Consumer Safety Unit CA Division) Electricity Association Engineering Equipment and Materials Users’ Association Institution of Electrical Engineers London Regional Transport PSA Projects Ltd m o c f z b w x The following bodies were also represented in the drafting of the standard, through subcommittees and panels: w ww Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.) British Electrical Systems Association (BEAMA Ltd.) British Non-ferrous Metals Federation British Steel plc Chartered Institution of Building Services Engineers ERA Technology Ltd Electrical Installation Equipment Manufacturers’ Association (BEAMA Ltd.) Engineering Industries Association GAMBICA (BEAMA Ltd.) Institution of Incorporated Executive Engineers Lighting Industry Federation Ltd London Underground Ltd National Association of Lift Makers Portable Electric Tool Manufacturers’ Association Transmission and Distribution Association (BEAMA Limited) 网 享 分 标准 © BSI 09-1999 BS EN 60719:1993 IEC 719:1992 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: 020 8996 9000 Fax: 020 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: 020 8996 9001 Fax: 020 8996 7001 m o c w x In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards f z b w ww BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: 020 8996 7111 Fax: 020 8996 7048 网 享 分 Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: 020 8996 7002 Fax: 020 8996 7001 标准 Copyright Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained BSI 389 Chiswick High Road London W4 4AL If permission is granted, the terms may include royalty payments or a licensing agreement Details and advice can be obtained from the Copyright Manager Tel: 020 8996 7070