SIST IEC 60121:1999

Recommendation for commercial annealed aluminium electrical conductor wire

Lays down the electrical resistivity, tensile strength and elongation of commercial annealed aluminium electrical conductor wire having a diameter greater than 1 mm (0.0394 in).

Recommandation concernant les fils en aluminium recuit industriel pour conducteurs électriques

Spécifie la résistivité électrique, la charge de rupture et l'élongation pour les fils en aluminium recuit industriel pour conducteurs électriques d'un diamètre supérieur à 1 mm (0,0394 in).

Recommendation for commercial annealed electrical conductor wires

General Information

• Status: Published
• Publication Date: 31-Oct-1999
• ICS: 29.060.10 - Wires
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: GAV - Bare aluminium conductors
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-1999
• Due Date: 01-Nov-1999
• Completion Date: 01-Nov-1999
• Ref Project: IEC 60068-3-2 - Systematic review of IEC 68-3-2 (1976)

Overview

SIST IEC 60121:1999 is a key international standard that provides a systematic review of the properties of commercial annealed aluminium electrical conductor wire with diameters greater than 1 mm (0.0394 in). Originally developed by the International Electrotechnical Commission (IEC), this standard lays down critical specifications including electrical resistivity, tensile strength, and elongation for annealed aluminium wires used in electrical applications.

This standard ensures uniformity and reliability in the mechanical and electrical characteristics of aluminium conductor wires that are widely used in power transmission and distribution. The document serves as a foundational reference for manufacturers, engineers, and quality assurance professionals working with aluminium electrical conductors.

Key Topics

• Scope: Focused on commercial annealed aluminium electrical conductor wire with diameters larger than 1 mm.
• Electrical Resistivity: Defines the maximum volume resistivity at 20°C as 0.0280 ohm·mm²/m, with a maximum measurement error of 0.3%. Resistivity measurements must be conducted between 10 °C and 30 °C and corrected to 20 °C.
• Mechanical Properties:
  • Tensile Strength: Shall not exceed 10 kg/mm² (14,220 lb/in²), ensuring adequate durability without compromising flexibility.
  • Elongation: Must be at least 20% in a 200 mm gauge length, indicating good ductility.
• Physical Constants: Provides essential data such as density (2,703 kg/m³), temperature coefficient of resistance (0.00407 per °C), and linear expansion coefficient (0.000023 per °C), vital for calculations involving thermal effects.
• International Consensus: Developed with input and approval from a broad coalition of countries to harmonize global standards on aluminium electrical wiring.

Applications

SIST IEC 60121:1999 is widely applied in industries and sectors involving aluminium electrical conductors, including:

• Power Transmission and Distribution: Specifies the material properties for overhead and underground power lines.
• Electrical Wiring Manufacturing: Guides producers in quality control and materials selection to meet agreed international requirements.
• Infrastructure Projects: Supports design engineers in specifying conductor wires that comply with international standards, ensuring safety and performance.
• Electrical Utilities: Provides benchmarks for evaluating supplier quality and verifying compliance during procurement.
• Research & Development: Aids in the development of new aluminium conductor wire grades by establishing baseline mechanical and electrical characteristics.

Using SIST IEC 60121:1999 as a reference ensures the use of conductor wires that are durable, efficient, and suitable for varying environmental conditions, helping reduce failures and enhance the reliability of electrical networks.

Related Standards

To complement SIST IEC 60121:1999, users often refer to related standards and recommendations such as:

• IEC 60121 – Recommendation for commercial annealed aluminium electrical conductor wire, closely aligned with this standard for ensuring compatibility in specifications.
• IEC 60068 (General Series) – Covers environmental testing methods, important for assessing durability of aluminium wires under different climatic stresses.
• National and Regional Standards – Various countries adopt IEC guidelines incorporating national modifications to fit local regulatory environments.
• Standards on Aluminium Alloys and Treatments – Other IEC standards that specify characteristics of aluminium alloys and heat treatments relevant to manufacturing conductor wires.

Summary

SIST IEC 60121:1999 is an essential standard that specifies the electrical and mechanical properties of commercial annealed aluminium electrical conductor wires above 1 mm diameter. It provides internationally agreed-upon resistivity limits, tensile strength thresholds, and elongation minimums, fostering global harmonization and quality assurance in the manufacture and use of aluminium conductor wires. This standard is instrumental for ensuring safe, reliable, and efficient electrical power transmission and distribution infrastructure globally.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-1999
Recommendation for commercial annealed electrical conductor wires
Recommendation for commercial annealed aluminium electrical conductor wire
Recommandation concernant les fils en aluminium recuit industriel pour conducteurs
électriques
Ta slovenski standard je istoveten z: IEC 60121
ICS:
29.060.10 Žice Wires
29.240.20 Daljnovodi Power transmission and
distribution lines
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
INTERNATIONAL
Première édition
STAN DARD
First edition
1960-01
Recommandation concernant les fils en aluminium
recuit industriel pour conducteurs électriques
Recommendation for commercial annealed
aluminium electrical conductor wire
© IEC 1960 Droits de reproduction
réservés — Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni
No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun
any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo-
including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur.
writing from the publisher.
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Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
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Commission Electrotechnique Internationale
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International Electrotechnical Commission
IEC
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
MERCIAL
RECOMMENDATION FOR COM
ANNEALED ALUMINIUM ELECTRICAL CONDUCTOR WIRE
FOREWORD
the I.E.C. on technical matters, prepared by Technical Committees on which all the
(1) The formal decisions or agreements of
National Committees having a special interest therein are represented, express, as nearly as possible, an international
consensus of opinion on the subjects dealt with.
rnational use and they are accepted by the National Committees in that
(2) They have the form of recommendations for inte
sense.
In order to promote this international unification, the I.E.C. expresses the wish that all National Committees having as
(3)
yet no national rules, when preparing such rules, shou
...