1、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 including 450/750 V The European Standard EN 60719:1993 has the status of a British Standard UDC 621.315
2、.2.001.24:621.315.61:621.3.022BSEN 60719:1993 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 15 November 1993 BSI 09-1999 The following BSI refe
3、rences relate to the work on this standard: Committee reference CIL/20 Special announcement in BSI News, September 1993 ISBN 0 580 22591 7 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, com
4、prises thenational committees of the following countries: Austria Italy Belgium Luxembourg Denmark Netherlands Finland Norway France Portugal Germany Spain Greece Sweden Iceland Switzerland Ireland United Kingdom Amendments issued since publication Amd. No. Date CommentsBSEN 60719:1993 BSI 09-1999 i
5、 Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 1 General 3 1.1 Scope 3 1.2 Normative references 3 2 Lower limit for the average outer diameter 3 3 Upper limit for the average outer diameter 4 4 Thickness of the mandatory coverings other than the insulatio
6、n and the sheath(s) 4 Annex ZA (normative) Other international publications quoted in this standardwith the references of the relevant European publications 6 National annex NA (informative) Committees responsible Inside back cover Table 1 Diameter of circular copper conductors for cables for fixed
7、wiring 4 Table 2 Diameter of circular copper conductors for flexible cables and cords 5BSEN 60719:1993 ii BSI 09-1999 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:
8、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 publish
9、ed 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
10、 protective coverings. The foreword of EN 60719 makes reference to the “date of withdrawal” (dow) ofthe relevant national standard. In this case, there is no relevant BritishStandard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standard
11、s 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, pagesi andii, theEN title page, pages2 to6, an inside back cover and a back co
12、ver. 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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60719 August 1993 UDC 621.315.2.001.24:621.315.61:621.3.022 Descriptors: Ele
13、ctric 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 in
14、cluding 450/750 V (IEC 719:1992) Calcul des valeurs minimales et maximales des dimensions extrieures moyennes des conducteurs et cbles mes circulaires en cuivre et de tension nominale au plus gale 450/750 V (CEI 719:1992) Berechnung der unteren und oberen Grenzen der mittleren Auenmae von Leitungen
15、mit runden Kupferleitern und Nennspannungen bis 450/750 V (IEC 719:1992) 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 nation
16、al 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
17、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,
18、 Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Centra
19、l Secretariat: rue de Stassart 35, B-1050 Brussels 1993 Copyright reserved to CENELEC members Ref. No. EN 60719:1993 EEN 60719:1993 BSI 09-1999 2 Foreword At the request of the CENELEC Technical Committee TC 20, Electric cables, the International Standard IEC 719:1992 was submitted to the CENELEC Un
20、ique 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 on6July1993. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Anne
21、x ZA is normative. latest date of publication of an identical national standard (dop) 1994-03-01 latest date of withdrawal of conflicting national standards (dow) 1994-03-01EN 60719:1993 BSI 09-1999 3 1 General 1.1 Scope This International Standard specifies a method for calculation of the lower and
22、 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 including450/750 V. This standard is not applicable to mineral insulated cables. The method shall not be used to calculate the diameter over t
23、he core assembly for determining the sheath thickness; the method given in Appendix A of IEC 502 shall be used for this purpose. NOTE 1It 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 verifi
24、cation by measurement. NOTE 2The 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 N
25、ormative 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 agreement
26、s 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 powe
27、r cables for rated voltages from 1 kV up to30kV. 2 Lower limit for the average outer diameter 2.1 Take as diameter D of the conductor the value given in Table 1 or Table 2 respectively for cables for fixed wiring and for flexible cables and cords. 2.2 Calculate the nominal diameter over the core by
28、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
29、 2.2 by the appropriate value of the assembly coefficient k, given in the following table: 2.4 Calculate the nominal outer diameter D oof 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 co
30、verings, if any, over the core assembly (seeclause4). 2.5 The lower limit D minof the average outer diameter is obtained by multiplying D oby the factor given: Number of cores Assembly coefficient k Number of cores Assembly coefficient k 2 2,00 24 6,00 3 2,16 25 6,00 4 2,42 26 6,00 5 2,70 27 6,15 6
31、3,00 28 6,41 7 3,00 29 6,41 7 a 3,35 30 6,41 8 3,45 31 6,70 8 a 3,66 32 6,70 9 3,80 33 6,70 9 a 4,00 34 7,00 10 4,00 35 7,00 10 a 4,40 36 7,00 11 4,00 37 7,00 12 4,16 38 7,33 12 a 5,00 39 7,33 13 4,41 40 7,33 14 4,41 41 7,67 15 4,70 42 7,67 16 4,70 43 7,67 17 5,00 44 8,00 18 5,00 45 8,00 18 a 7,00 4
32、6 8,00 19 5,00 47 8,00 20 5,33 48 8,15 21 5,33 52 8,41 22 5,67 61 9,00 23 5,67 a Cores assembled in one layer. w for circular multi-core cables with class 5 or class 6 conductors D min= 0,96 D o 0,3 mm w for all other constructions D min= 0,96 D ommEN 60719:1993 4 BSI 09-1999 In each case, the value
33、 so obtained shall be rounded off: to the nearest first decimal for values less than50 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, 3 or 4, it shall remain unchanged (rounding down). If the last figure to
34、be retained is followed, before rounding, by 9, 8, 7, 6 or 5, it shall be increased by one (rounding up). 3 Upper limit for the average outer diameter 3.1 The upper limit D maxof the average outer diameter is calculated to two decimal places using the nominal outer diameter D oobtained in 2.4 as fol
35、lows: 4 Thickness of the mandatory coverings other than the insulation and the sheath(s) The following values shall be used unless otherwise specified in the cable standard: Table 1 Diameter of circular copper conductors for cables for fixed wiring Examples: calculated value =2,449 D min=2,4 calcula
36、ted value =2,494 D min=2,5 calculated value = 50,27 D min= 50 calculated value = 50,61 D min= 51 for rubber cables, D max= D o 1,2 mm for PVC cables, D max= D o 1,16 mm D maxis rounded off in the same way as D min(see 2.5). Film separator between conductor and insulation 0,08 mm Proofed textile type
37、, textile braid round each core 0,15 mm Film separator over laid up cores 0,15 mm Proofed textile tape separator over laid up cores 0,15 mm Separator between two layers of a sheath 0,15 mm Outer textile braid 0,30 mm Metal braid 2,5 times diameter of the component wire in millimetres Longitudinally
38、applied metal tape with overlap in combination with drain wires 1,5 times thickness of the component tape in millimetres Nominal cross-sectional area mm 2 Class 1 Class 2 Nominal diameter of conductor afor calculation mm Nominal diameter of conductor afor calculation mm 0,5 0,75 1 1,5 2,5 4 6 10 16
39、25 35 50 70 95 120 150 185 240 300 400 500 630 800 1 000 0,80 0,95 1,10 1,35 1,75 2,2 2,7 3,5 4,4 5,6 6,5 7,6 9,1 10,7 12,0 13,4 0,85 1,05 1,20 1,45 1,85 2,35 2,9 3,8 4,7 6,0 7,0 8,2 9,8 11,5 13,0 14,4 16,1 18,5 20,7 23,4 26,2 29,8 33,8 37,9 a See note 1 in 1.1EN 60719:1993 BSI 09-1999 5 Table 2 Dia
40、meter of circular copper conductors for flexible cables and cords Nominal cross-sectionalarea Classes 5 and 6 Nominal diameter of conductor a forcalculation mm 2 mm 0,5 0,75 1 1,5 2,5 4 6 10 16 25 35 50 70 95 120 150 185 240 300 400 500 630 0,95 1,10 1,25 1,50 1,95 2,50 3,0 3,9 5,0 6,4 7,7 9,2 11,0
41、12,5 14,2 15,8 17,5 20,1 22,5 25,8 29,0 33,7 a See note 1 in 1.1.EN 60719:1993 6 BSI 09-1999 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
42、modifications, indicated by (mod), the relevant EN/HD applies. IEC publication Date Title EN/HD Date 502 1983 Extruded solid dielectric insulated power cablesfor ratedvoltages from 1 kV up to 30 kV BS EN60719:1993 BSI 09-1999 7 National annex NA (informative) Committees responsible The United Kingdo
43、m 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 Ele
44、ctrical 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) Electricit
45、y Association Engineering Equipment and Materials Users Association Institution of Electrical Engineers London Regional Transport PSA Projects Ltd. The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Association of Manufacturers Allied to the
46、 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
47、.) 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 L
48、imited)BS EN 60719:1993 IEC 719:1992 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Cha
49、rter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards 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 BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an i
