oSIST prEN IEC 62641:2021
(Main)Conductors for overhead lines - Aluminium and aluminium alloy wires for concentric lay stranded conductors
Conductors for overhead lines - Aluminium and aluminium alloy wires for concentric lay stranded conductors
2020-10-19: Common mods to this prEN IEC 62641 are included in prAA (PR=72850)
Vodniki za nadzemne vodnike - Aluminijaste žice in žice iz aluminijeve zlitine za koncentrične proste vodnike
General Information
RELATIONS
Standards Content (sample)
SLOVENSKI STANDARD
oSIST prEN IEC 62641:2021
01-julij-2021
Vodniki za nadzemne vodnike - Aluminijaste žice in žice iz aluminijeve zlitine za
koncentrične proste vodnikeConductors for overhead lines - Aluminium and aluminium alloy wires for concentric lay
stranded conductorsTa slovenski standard je istoveten z: prEN IEC 62641:2021
ICS:
29.240.20 Daljnovodi Power transmission and
distribution lines
77.150.10 Aluminijski izdelki Aluminium products
oSIST prEN IEC 62641:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 62641:2021
7/705/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62641 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-04-30 2021-07-23
SUPERSEDES DOCUMENTS:
7/696/CD, 7/700A/CC
IEC TC 7 : OVERHEAD ELECTRICAL CONDUCTORS
SECRETARIAT: SECRETARY:
China Mr Qiu Zheng
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 11
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel votingThe attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
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
they are aware and to provide supporting documentation.TITLE:
Conductors for overhead lines – Aluminium and aluminium alloy wires for concentric lay stranded
conductorsPROPOSED STABILITY DATE: 2024
NOTE FROM TC/SC OFFICERS:
Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.---------------------- Page: 3 ----------------------
oSIST prEN IEC 62641:2021
IEC CDV 62641/Ed1 © IEC:2021 – 2 – 7/705/CDV
1 CONTENTS
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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40 INTERNATIONAL ELECTROTECHNICAL COMMISSION
41 ____________
43 CONDUCTORS FOR OVERHEAD LINES - ALUMINIUM AND ALUMINIUM
44 ALLOY WIRES FOR CONCENTRIC LAY STRANDED CONDUCTORS
46 FOREWORD
47 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
48 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
49 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
50 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
51 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
52 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
53 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
54 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
55 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
56 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
57 consensus of opinion on the relevant subjects since each technical committee has representation from all
58 interested IEC National Committees.59 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
60 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
61 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
62 misinterpretation by any end user.63 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
64 transparently to the maximum extent possible in their national and regional publications. Any divergence between
65 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
66 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
67 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
68 services carried out by independent certification bodies.69 6) All users should ensure that they have the latest edition of this publication.
70 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
71 members of its technical committees and IEC National Committees for any personal injury, property damage or
72 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
73 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
74 Publications.75 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
76 indispensable for the correct application of this publication.77 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
78 rights. IEC shall not be held responsible for identifying any or all such patent rights.
79 IEC 62641 has been prepared by IEC technical committee 7: OVERHEAD ELECTRICAL80 CONDUCTORS. It is an International Standard.
81 This International Standard cancels and replaces IEC 60104:1987 Edition 2.0, IEC 60121:1960
82 Edition 1.0, IEC 60889:1987 Edition 1.0 and IEC 62004:2007 Edition 1.0.83 The text of this International Standard is based on the following documents:
Draft Report on voting
7/696/CD 7/700A/CC
85 Full information on the voting for its approval can be found in the report on voting indicated in
86 the above table.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
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90 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
91 described in greater detail at http://www.iec.ch/standardsdev/publications.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
94 specific document. At this date, the document will be95 • reconfirmed,
96 • withdrawn,
97 • replaced by a revised edition, or
98 • amended.
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100 INTRODUCTION
101 The purpose of this standard is threefold.
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
105 from EN 50183.106 Secondly, this format allows an easier standard maintenance, as multiple wire materials are
107 covered by a single standard instead of separate documents.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
111 a good basis which may be extended by others used in regions and countries.---------------------- Page: 7 ----------------------
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112 CONDUCTORS FOR OVERHEAD LINES - ALUMINIUM AND ALUMINIUM
113 ALLOY WIRES FOR CONCENTRIC LAY STRANDED CONDUCTORS
114
115
116
117 1 Scope
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
122 conductors with or without gap(s) for power transmission purposes.123 The various materials and their designations are listed in Table 1. For calculation purposes, the
124 values listed in Table 1 shall be used.125 2 Normative references
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
129 amendments) applies.130 IEC 60028, International standard of resistance for copper
131 IEC 60050, International electrotechnical vocabulary
132 IEC 60468, Method of measurement of resistivity of metallic materials
133 IEC TR 61597, Overhead electrical conductors - calculation methods for stranded bare
134 conductors135 ISO 6892-1, Metallic materials - tensile testing - part 1: method of test at room temperature
136 ISO 7801, Metallic materials - wires - reverse bend test137 ISO 7802, Metallic materials - wires - wrapping test
138 3 Terms and definitions
139 For the purposes of this document, the terms and definitions given in IEC 60050 and the
140 following terms and definitions apply.141 ISO and IEC maintain terminological databases for use in standardization at the following
142 addresses:143 • IEC Electropedia: available at http://www.electropedia.org/
144 • ISO Online browsing platform: available at http://www.iso.org/obp
145 3.1
146 aluminium
147 all types of aluminium and aluminium alloys (Ax, ALx in Table 1, 3.13 and 4)
148 3.2
149 annealed aluminium
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
152 to 250°C---------------------- Page: 8 ----------------------
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153 3.3
154 equivalent diameter
155 the diameter of a round wire, which would have the same cross section area of a given formed
156 wire157 3.4
158 formed wire
159 a drawn or rolled metal wire having a constant non-circular cross-section
160 3.5
161 lot
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.
164 Note: A lot can consist of part or all of a purchased quantity.165 3.6
166 nominal
167 the value of a measurable property to which tolerance is applied. Nominal values are target
168 values169 3.7
170 production unit
171 a coil, reel, spool, or other package of wire that represents a single usable length
172 3.8173 residual strength ratio
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
176 only to thermal resistant aluminium alloys)177 3.9
178 round wire
179 a filament of drawn metal having a constant circular cross-section
180 3.10
181 sample
182 specimen or specimens removed from a production unit or units which is considered to have
183 properties representative of a lot184 3.11
185 specimen
186 a length of wire removed for test purposes
187 3.12
188 thermal resistance
189 the capacity of a thermal resistant aluminium alloy to have a residual strength ratio of not less
190 than 0,90 after heating191 3.13
192 thermal resistant aluminium alloy
193 all types of aluminium alloys (ATx in Table 1) designed to operate continuously higher than that
194 of conventional aluminium alloy wires or hard-drawn aluminium wires...
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