EN IEC 62641:2022/A11:2022

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

2020-10-19: This prAA represents common mods to prEN IEC 62641 (PR=72849)

Leiter für Freileitungen - Drähte aus Aluminium und Aluminiumlegierung für Leiter aus konzentrisch verseilten Drähten

Conducteurs pour lignes aériennes - Fils d’aluminium et en alliage d’aluminium pour conducteurs toronnés à couches concentriques

No scope available

Vodniki za nadzemne vode - Žice iz aluminija in aluminijeve zlitine za koncentrično pletene vodnike - Dopolnilo A11

General Information

• Status: Published
• Publication Date: 12-May-2022
• ICS: 29.060.01 - Electrical wires and cables in general
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: CLC/TC 7X - Overhead electrical conductors
• Drafting Committee: CLC/TC 7X - Overhead electrical conductors
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 13-May-2022
• Completion Date: 13-May-2022
• Ref Project: SIST EN IEC 62641:2022/A11:2022 - Conductors for overhead lines - Aluminium and aluminium alloy wires for concentric lay stranded conductors

Relations

• Amends: EN IEC 62641:2022 - Conductors for overhead lines - Aluminium and aluminium alloy wires for concentric lay stranded conductors
• Effective Date: 10-Nov-2020

Overview

EN IEC 62641:2022/A11:2022 is a European amendment standard focusing on aluminium and aluminium alloy wires used in concentric lay stranded conductors for overhead power lines. Developed by CLC/TC 7X "Overhead electrical conductors," this amendment introduces updates to the existing EN IEC 62641:2022 standard, ensuring enhanced technical requirements and incorporating special national conditions relevant to different regions. The document supports consistent manufacturing, testing, and application practices across Europe for overhead electrical conductors.

Key Topics

• Material Specifications
  The amendment adds a new aluminium alloy designation, AL7, between AL5 and existing grades, detailing its electrical and mechanical properties for design and calculation. This ensures better categorization and quality control for aluminium wires used in overhead conductors.
• Thermal Resistance Requirements
  Changes in thermal resistance testing now allow a minimum value of 0.85 for single tested wires and 0.90 for the average after heating, adjusting previously stricter benchmarks to account for realistic operational performance.
• Mechanical Properties
  The updated standard lists minimum tensile strengths and elongation properties for AL7 wires, contributing to reliable conductor performance under mechanical and environmental stresses.
• Special National Conditions (Annex C)
  Annex C introduces mandatory and informative provisions addressing national peculiarities such as climatic influences, electrical earthing practices, and welding methods for joints (e.g., requirements in France, Austria, and Germany). This facilitates harmonization while respecting local constraints.
• Testing Methods and Normative References
  The document references international standards for resistivity measurement, tensile testing, wrapping, and reverse bend tests, ensuring comprehensive quality assurance through recognized methods such as IEC 60468 and ISO 6892-1.

Applications

EN IEC 62641:2022/A11:2022 is critical for manufacturers, engineers, and quality assessors involved in the production and maintenance of overhead power transmission and distribution lines. Its practical applications include:

• Design and specification of overhead conductors using aluminium and aluminium alloy wires for improved electrical conductivity and mechanical strength.
• Ensuring consistent wire quality and reliability through standardized testing procedures, critical for long-term infrastructure durability.
• Addressing regional requirements in conductor fabrication and assembly, especially in countries with unique climatic or electrical system conditions.
• Supporting compliance with European regulations for electrical conductors, aiding market acceptance and interoperability among CENELEC members.

Related Standards

• EN IEC 62641:2022 – Base standard for conductors with aluminium and aluminium alloy wires, upon which this amendment builds.
• IEC 60468 – Method for measuring the resistivity of metallic materials, key for evaluating conductor wire performance.
• ISO 6892-1 – Tensile testing methods for metallic materials, ensuring mechanical strength compliance.
• IEC TR 61597 – Guides calculation methods for stranded bare conductors, assisting in conductor design.
• ISO 7801 and ISO 7802 – Standards for wire reverse bend and wrapping tests, important for mechanical endurance validations.

This amendment standard guarantees the up-to-date technical framework necessary for reliable, high-quality aluminium overhead conductors with improved performance and adaptability to national conditions, fostering efficient power transmission across Europe.

Keywords: aluminium overhead conductors, concentric lay stranded conductors, aluminium alloy wires, EN IEC 62641 amendment, thermal resistance, tensile strength, overhead power lines, aluminium conductor standards, CENELEC, electrical conductor testing, overhead electrical conductors, special national conditions.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2022
Vodniki za nadzemne vode - Žice iz aluminija in aluminijeve zlitine za koncentrično
pletene vodnike - Dopolnilo A11
Conductors for overhead lines - Aluminium and aluminium alloy wires for concentric lay
stranded conductors
Leiter für Freileitungen - Drähte aus Aluminium und Aluminiumlegierung für Leiter aus
konzentrisch verseilten Drähten
Conducteurs pour lignes aériennes - Fils d’aluminium et en alliage d’aluminium pour
conducteurs toronnés à couches concentriques
Ta slovenski standard je istoveten z: EN IEC 62641:2022/A11:2022
ICS:
29.240.20 Daljnovodi Power transmission and
distribution lines
77.150.10 Aluminijski izdelki Aluminium products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62641:2022/A11

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2022
ICS 29.240.20; 29.060.01
English Version
Conductors for overhead lines - Aluminium and aluminium alloy
wires for concentric lay stranded conductors
Conducteurs pour lignes aériennes - Fils d'aluminium et en Leiter für Freileitungen - Drähte aus Aluminium und
alliage d'aluminium pour conducteurs toronnés à couches Aluminiumlegierung für Leiter aus konzentrisch verseilten
concentriques Drähten
This amendment A11 modifies the European Standard EN IEC 62641:2022; it was approved by CENELEC on 2022-04-11. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This amendment 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 CEN-CENELEC Management Centre has the same status as
the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62641:2022/A11:2022 E

European foreword
This document (EN IEC 62641:2022/A11:2022) has been prepared by CLC/TC 7X “Overhead electrical
conductors”.
The following dates are fixed:
• latest date by which this document has to be implemented (dop) 2023-04-11
at national level by publication of an identical national
standard or by endorsement
• latest date by which the national standards conflicting with (dow) 2025-04-11
this document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website
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