1、BRITISH STANDARD BS EN 60228:2005 Conductors of insulated cables The European Standard EN 60228:2005 has the status of a British Standard ICS 29.060.20 BS EN 60228:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 24 March 2005 BSI 24 Marc
2、h 2005 ISBN 0 580 45656 0 National foreword This British Standard is the official English language version of EN 60228:2005. It was derived by CENELEC from IEC 60228:2004. It supersedes BS 6360:1991 which will be withdrawn on1st December 2007. The UK participation in its preparation was entrusted by
3、 Technical Committee GEL/20, Electric cables, to Subcommittee GEL/20/16, Medium/high voltage cables, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement internati
4、onal or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport
5、to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee an
6、y enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 19 and a
7、 back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 60228 NORME EUROPENNE EUROPISCHE NORM February 2005 CENELEC European Committee for Electrotechnical Standardiza
8、tion Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60228:2005 E ICS
9、 29.060.20 Supersedes HD 383 S2:1986 + A1:1989 + A2:1993English version Conductors of insulated cables (IEC 60228:2004, modified) Ames des cbles isols (CEI 60228:2004, modifie) Leiter fr Kabel und isolierte Leitungen (IEC 60228:2004, modifiziert) This European Standard was approved by CENELEC on 200
10、4-12-07. 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
11、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
12、Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Neth
13、erlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 6 NE2202:8500 2 Foreword The text of document 20/718/FDIS, future edition 3 of IEC 60228, prepared by IEC TC 20, Electric cables, was submitted to the IEC-CENELEC parallel vote and was approved by C
14、ENELEC as EN 60228 on 2004-12-07. A draft amendment, prepared by the Technical Committee CENELEC TC 20, Electric cables, was submitted to the formal vote and was approved by CENELEC for inclusion into EN 60228 on 2004-12-07. This European Standard supersedes HD 383 S2:1986 + A1:1989 + A2:1993. The p
15、rincipal changes with respect to HD 383 S2 are addition of a definition for nominal cross-sectional area; an increase in the range of conductor sizes in Tables 1 and 2; addition of a note that solid aluminium alloy conductors, having the same dimensions as aluminium conductors, will have a higher re
16、sistance; strengthening of the recommendations for dimensional limits of compacted stranded copper conductors. 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) 2005-09-01 lates
17、t date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-12-01 Annex ZA, Special national conditions, has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60228:2004 was approved by CENELEC as a European Standard without any
18、 modification. _ Page2 EN60228:200582206 4002:CEI 3 CONTENTS FOREWORD 2 INTRODUCTION.41 Scope.5 2 Terms and definitions .5 3 Classification5 4 Materials 6 4.1 Introduction .6 4.2 Solid aluminium conductors .6 4.3 Circular and shaped stranded aluminium conductors6 5 Solid conductors and stranded cond
19、uctors. .6 5.1 Solid conductors (class 1)6 5.1.1 Construction 6 5.1.2 Resistance.7 5.2 Stranded circular non-compacted conductors (class 2).7 5.2.1 Construction 7 5.2.2 Resistance.7 5.3 Stranded compacted circular conductors and stranded shaped conductors (class 2) 7 5.3.1 Construction 7 5.3.2 Resis
20、tance.7 6 Flexible conductors (classes 5 and 6). 7 6.1 Construction7 6.2 Resistance 8 7 Check of compliance with Clauses 5 and 68 Annex A (normative) Measurement of resistance12 Annex B (informative) Exact formulae for the temperature correction factors.14 Annex C (informative) Guide to the dimensio
21、nal limits of circular conductors 15 Page3 EN60228:2005 Annex ZA (normative) Special national conditions 19 corresponding European publications . 1982206 4002:CEI 9 INTRODUCTION IEC 60228 is intended as a fundamental reference standard for IEC Technical Committees and National Committees in drafting
22、 standards for electric cables, and to the National Committees in drafting specifications for use in their own countries. These committees should select from the tables of this general standard the conductors appropriate to the particular applications with which they are concerned and either include
23、 the applicable details in their cable specifications or make appropriate references to this standard. In preparing this edition the main objects have been to incorporate IEC 60228A into it and maintain a simplified yet informative standard so far as is compatible with technical and economic conside
24、rations. Page4 EN60228:200582206 4002:CEI 11 CONDUCTORS OF INSULATED CABLES 1 Scope This International Standard specifies the nominal cross-sectional areas, in the range 0,5 mm 2to 2 500 mm 2 , for conductors in electric power cables and cords of a wide range of types. Requirements for numbers and s
25、izes of wires and resistance values are also included. These conductors include solid and stranded copper, aluminium and aluminium alloy conductors in cables for fixed installations and flexible copper conductors. The standard does not apply to conductors for telecommunication purposes. The applicab
26、ility of this standard to a particular type of cable is as specified in the standard for the type of cable. Unless indicated to the contrary in a particular clause, this standard relates to the conductors in the finished cable and not to the conductor as made or supplied for inclusion into a cable.
27、Informative annexes are included giving supplementary information covering temperature correction factors for resistance measurement (Annex B) and dimensional limits of circular conductors (Annex C). 2 Terms and definitions For the purposes of this document, the following terms and definitions apply
28、. 2.1 metal-coated coated with a thin layer of suitable metal, such as tin or tin alloy 2.2 nominal cross-sectional area value that identifies a particular size of conductor but is not subject to direct measurement NOTE Each particular size of conductor in this standard is required to meet a maximum
29、 resistance value. 3 Classification The conductors have been divided into four classes, 1, 2, 5 and 6. Those in classes 1 and 2 are intended for use in cables for fixed installations. Classes 5 and 6 are intended for use in flexible cables and cords but may also be used for fixed installations. Clas
30、s 1: solid conductors. Class 2: stranded conductors. Class 5: flexible conductors. Class 6: flexible conductors which are more flexible than class 5. Page5 EN60228:200582206 4002:CEI 31 4 Materials 4.1 Introduction The conductors shall consist of one of the following: plain or metal-coated annealed
31、copper; aluminium or aluminium alloy. 4.2 Solid aluminium conductors Circular and shaped solid aluminium conductors shall be made from aluminium such that the tensile strength of the completed conductor is within the following limits: Nominal cross-sectional area mm 2Tensile strength N/mm 210 and 16
32、 110 to 165 25 and 35 60 to 130 50 60 to 110 70 and above 60 to 90 NOTE The values given above are not applicable to aluminium alloy conductors. 4.3 Circular and shaped stranded aluminium conductors Stranded aluminium conductors shall be made from aluminium such that the tensile strength of the indi
33、vidual wires is within the following limits: Nominal cross-sectional area mm 2Tensile strength N/mm 210 up to 200 16 and above 125 to 205 NOTE 1 The values given above are not applicable to aluminium alloy conductors. NOTE 2 This data can only be checked on wires taken before stranding and not on wi
34、res taken from a stranded conductor. 5 Solid conductors and stranded conductors 5.1 Solid conductors (class 1) 5.1.1 Construction a) Solid conductors (class 1) shall consist of one of the materials specified in Clause 4. b) Solid copper conductors shall be of circular cross-section. NOTE Solid coppe
35、r conductors having nominal cross-sectional areas of 25 mm 2and above are for particular types of cable, e.g. mineral insulated, and not for general purposes. c) Solid aluminium and solid aluminium alloy conductors of sizes 10 mm 2to 35 mm 2shall be of circular cross-section. Larger sizes shall be o
36、f circular cross-section for single-core cables and may be of either circular or shaped cross-section for multi-core cables. Page6 EN60228:200582206 4002:CEI 51 5.1.2 Resistance The resistance of each conductor at 20 C, when determined in accordance with Clause 7, shall not exceed the appropriate ma
37、ximum value given in Table 1. NOTE For solid aluminium alloy conductors, having the same nominal cross-sectional area as an aluminium conductor the resistance value given in Table 1 should be multiplied by a factor of 1,162 unless otherwise agreed between the manufacturer and the purchaser. 5.2 Stra
38、nded circular non-compacted conductors (class 2) 5.2.1 Construction a) Stranded circular non-compacted conductors (class 2) shall consist of one of the materials specified in Clause 4. b) Stranded aluminium or aluminium alloy conductors shall have a cross-sectional area not less than 10 mm 2 . c) Th
39、e wires in each conductor shall all have the same nominal diameter. d) The number of wires in each conductor shall be not less than the appropriate minimum number given in Table 2. 5.2.2 Resistance The resistance of each conductor at 20 C, when determined in accordance with Clause 7, shall not excee
40、d the appropriate maximum value given in Table 2. 5.3 Stranded compacted circular conductors and stranded shaped conductors (class 2) 5.3.1 Construction a) Stranded compacted circular conductors and stranded shaped conductors (class 2) shall consist of one of the materials specified in Clause 4. Str
41、anded compacted circular aluminium or aluminium alloy conductors shall have a nominal cross-sectional area not less than 10 mm 2 . Stranded shaped copper, aluminium or aluminium alloy conductors shall have a nominal cross-sectional area of not less than 25 mm 2 . b) The ratio of the diameters of two
42、 different wires in the same conductor shall not exceed 2. c) The number of wires in each conductor shall be not less than the appropriate minimum number given in Table 2. NOTE This requirement applies to conductors made with wires of circular cross-section before compaction and not to conductors ma
43、de with pre-shaped wires. 5.3.2 Resistance The resistance of each conductor at 20 C, when determined in accordance with Clause 7, shall not exceed the appropriate value given in Table 2. 6 Flexible conductors (classes 5 and 6) 6.1 Construction a) Flexible conductors (classes 5 and 6) shall consist o
44、f plain or metal-coated annealed copper. b) The wires in each conductor shall have the same nominal diameter. c) The diameter of the wires in each conductor shall not exceed the appropriate maximum value given in Tables 3 or 4. Page7 EN60228:200582206 4002:CEI 71 6.2 Resistance The resistance of eac
45、h conductor at 20 C, when determined in accordance with Clause 7, shall not exceed the appropriate maximum value given in Tables 3 or 4. 7 Check of compliance with Clauses 5 and 6 Compliance with the requirements of 5.1.1, 5.2.1, 5.3.1 and 6.1 shall be checked on the completed cable by inspection an
46、d measurement where practicable. Compliance with the requirements for resistance given in 5.1.2, 5.2.2, 5.3.2 and 6.2 shall be checked by measurement in accordance with Annex A and corrected for temperature by the factors in Table A.1. Table 1 Class 1 solid conductors for single-core and multicore c
47、ables 1 2 3 4 Maximum resistance of conductor at 20 C Circular, annealed copper conductors Nominal cross-sectional area Plain Metal-Coated Aluminium and aluminium alloy conductors, circular or shaped cmm 2 /km /km /km 0,5 36,0 36,7 - 0,75 24,5 24,8 - 1,0 18,1 18,2 - 1,5 12,1 12,2 - 2,5 7,41 7,56 - 4
48、 4,61 4,70 - 6 3,08 3,11 - 10 1,83 1,84 3,08 a16 1,15 1,16 1,91 a25 0,727 b- 1,20 a35 0,524 b- 0,868 a50 0,387 b- 0,641 70 0,268 b- 0,443 95 0,193 b- 0,320 d120 0,153 b- 0,253 d150 0,124 b- 0,206 d185 0,101 b- 0,164 d240 0,0775 b- 0,125 d300 0,0620 b- 0,100 d400 0,0465 b- 0,0778 500 - - 0,0605 630 -
49、 - 0,0469 800 - - 0,0367 1 000 - - 0,0291 1 200 - - 0,0247 aAluminium conductors 10 mm 2to 35 mm 2circular only; see 5.1.1 c). bSee note to 5.1.1 b). cSee note to 5.1.2. dFor single core cables, four sectoral shaped conductors may be assembled into a single circular conductor. The maximum resistance of the assembled conductor shall be 25 % of that of the individual component conductors. Page8 E
