oSIST prEN IEC 62641:2021

SLOVENSKI STANDARD
oSIST prEN IEC 62641:2021
01-julij-2021

Vodniki za nadzemne vodnike - Aluminijaste žice in žice iz aluminijeve zlitine za

Conductors for overhead lines - Aluminium and aluminium alloy wires for concentric lay

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

This document is still under study and subject to change. It should not be used for reference purposes.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which

Conductors for overhead lines – Aluminium and aluminium alloy wires for concentric lay stranded

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You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without

3 FOREWORD ........................................................................................................................... 3

4 INTRODUCTION ..................................................................................................................... 5

5 1 Scope .............................................................................................................................. 6

6 2 Normative references ...................................................................................................... 6

7 3 Terms and definitions ...................................................................................................... 6

8 4 Material ........................................................................................................................... 8

9 5 Joints .............................................................................................................................. 8

10 6 Tests ............................................................................................................................... 8

11 6.1 General ................................................................................................................... 8

12 6.2 Place of testing ....................................................................................................... 8

13 6.3 Sampling rate ......................................................................................................... 8

14 6.4 Test methods .......................................................................................................... 8

15 6.4.1 Appearance ..................................................................................................... 8

16 6.4.2 Wire diameter .................................................................................................. 9

17 6.4.3 Tensile strength ............................................................................................... 9

18 6.4.4 Elongation ....................................................................................................... 9

19 6.4.5 Wrapping ......................................................................................................... 9

20 6.4.6 Bending ......................................................................................................... 10

21 6.4.7 Electrical resistivity ........................................................................................ 10

22 6.4.8 Thermal resistance ........................................................................................ 10

23 6.5 Acceptance and rejection ...................................................................................... 10

24 6.6 Certificate of compliance ....................................................................................... 10

25 7 Length and tolerance on length. .................................................................................... 10

26 Annex A (normative) Methods of securing formed wires ...................................................... 14

27 Annex B (informative) Thermal-resistant property ............................................................... 15

29 Figure A.1 – Methods of securing formed wires ..................................................................... 14

30 Figure B.1 – Arrhenius plot (residual stress 90 %) ................................................................ 15

32 Table 1 – Designation and properties for calculation purposes .............................................. 11

33 Table 2 – Tolerance on wire diameter ................................................................................... 11

34 Table 3 – Minimum mechanical properties for Ax and ALx wires ........................................... 12

35 Table 4 – Minimum mechanical properties for ATx wires ....................................................... 13

36 Table 5 – Temperature and duration of heating ..................................................................... 13

37 Table 6 – Parameters for bending test of aluminium alloy wires ............................................ 13

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81 This International Standard cancels and replaces IEC 60104:1987 Edition 2.0, IEC 60121:1960

85 Full information on the voting for its approval can be found in the report on voting indicated in

87 The language used for the development of this International Standard is English.

88 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

89 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

90 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

92 The committee has decided that the contents of this document will remain unchanged until the

93 stability date indicated on the IEC website under webstore.iec.ch in the data related to the

102 First, it is to group together similar wire materials that share the same general characteristics

103 and therefore the same test procedures and requirements. These wires are existing aluminium

104 and aluminium alloy wires from IEC 60104, IEC 60121, IEC 60889 and IEC 62004 as well as

106 Secondly, this format allows an easier standard maintenance, as multiple wire materials are

108 Thirdly, this standard indicates the most used wire materials worldwide, based on the

109 cooperation agreement between IEC and CENELEC, an IEC questionnaire in 2017 (7/672/Q,

110 Annex A) and a CENELEC questionnaire (7X/SEC0056/CC). The standardized materials form

118 This document specifies the mechanical and electrical properties of round and formed wires for

119 equivalent diameters up to the values as per Table 3 for aluminium and aluminium alloys and

120 as per Table 4 for thermal resistant alloys. This document is applicable to aluminium and

121 aluminium alloy wires for the manufacture of concentric lay overhead electrical stranded

123 The various materials and their designations are listed in Table 1. For calculation purposes, the

126 The following documents are referred to in the text in such a way that some or all of their content

127 constitutes requirements of this document. For dated references, only the edition cited applies.

128 For undated references, the latest edition of the referenced document (including any

133 IEC TR 61597, Overhead electrical conductors - calculation methods for stranded bare

135 ISO 6892-1, Metallic materials - tensile testing - part 1: method of test at room temperature

139 For the purposes of this document, the terms and definitions given in IEC 60050 and the

141 ISO and IEC maintain terminological databases for use in standardization at the following

150 heat treated aluminium (A0 and AL0 in Table 1) for increasing its ductility, reducing its hardness

151 and strength and having constant mechanical and electrical properties even at temperatures up

155 the diameter of a round wire, which would have the same cross section area of a given formed

162 a group of production units of one type and size of wire, which was manufactured by the same

163 manufacturer during the same time period under similar conditions of production.

167 the value of a measurable property to which tolerance is applied. Nominal values are target

171 a coil, reel, spool, or other package of wire that represents a single usable length

174 the ratio of the measured tensile strength at room temperature of a wire previously submitted

175 to heating, to its measured tensile strength at room temperature prior to heating (to be applied

182 specimen or specimens removed from a production unit or units which is considered to have

189 the capacity of a thermal resistant aluminium alloy to have a residual strength ratio of not less

193 all types of aluminium alloys (ATx in Table 1) designed to operate continuously higher than that