SIST EN 4651:2014

Aerospace series - Copper-clad aluminium alloy conductors for electrical cables - Product standard

This standard specifies the dimensions, linear resistance, mechanical characteristics, construction and mass of copper-clad aluminium alloy (CCA) conductors, for lightweight electrical cables for aerospace applications.
It applies to stranded conductors, with a nominal cross-sectional area of 0,22 mm2 to 22 mm2 inclusive.

Luft- und Raumfahrt - Leiter aus Aluminiumlegierung mit Kupferbeschichtung für elektrische Leitungen - Produktnorm

Série aérospatiale - Conducteurs en alliage d'aluminium chemisé cuivre pour câbles électriques - Norme de produit

La présente Norme européenne spécifie les dimensions, la résistance linéaire, les caractéristiques mécaniques, la construction et la masse des conducteurs en aluminium chemisés en alliage de cuivre (CCA), pour les câbles électriques allégés pour des applications aérospatiale.
Elle s’applique aux conducteurs toronnés, ayant une section nominale de 0,22 mm2 à 22 mm2 incluse.

Aeronavtika - Pobakreni vodniki iz aluminijeve zlitine za električne kable - Standard za proizvod

EN 4651 določa dimenzije, linearno odpornost, mehanske značilnosti, konstrukcijo in maso pobakrenih vodnikov iz aluminijeve zlitine za lahke električne kable za uporabo v aeronavtiki. Velja za pletene vodnike z nominalnim premerom od 0,22 mm2 do vključno 22 mm2.

General Information

• Status: Published
• Publication Date: 28-May-2014
• ICS: 49.025.20 - Aluminium
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 14-May-2014
• Due Date: 19-Jul-2014
• Completion Date: 29-May-2014
• Ref Project: EN 4651:2014 - Aerospace series - Copper-clad aluminium alloy conductors for electrical cables - Product standard

Overview

SIST EN 4651:2014 is a European standard specifying requirements for copper-clad aluminium alloy (CCA) conductors used in lightweight electrical cables designed for aerospace applications. Developed by the Aerospace and Defence Industries Association of Europe (ASD-STAN) and approved by CEN, this product standard defines the dimensions, mechanical characteristics, construction, mass, and linear resistance of stranded CCA conductors with nominal cross-sectional areas ranging from 0.22 mm² to 22 mm².

This standard ensures that conductors meet strict performance, durability, and quality benchmarks to support safe and efficient electrical systems in aerospace environments, where weight reduction and reliability are critical. It covers materials, conductor design, testing methods, quality assurance, marking, packaging, and delivery.

Key Topics

• Conductor Materials and Construction
  SIST EN 4651:2014 details specific compositions of aluminium alloys used in strands and the purity requirements for copper cladding. Conductors range from simple 1 + 6 stranded designs for smaller cross-sections to complex concentric or bunched strands for larger gauges. Platings such as tin, silver, or nickel may be applied to the strands with defined minimum thicknesses to enhance performance and corrosion resistance.

• Mechanical and Electrical Characteristics
  The standard specifies physical properties including tensile strength (maximum 138 MPa), elongation at rupture (minimum 6%), and 0.2% offset yield strength (minimum 90 MPa). Linear electrical resistance is controlled with maximum values defined at 20 °C. Dimensions, strand lay length, and compaction rates (minimum 95%) are also prescribed to maintain conductor integrity.

• Testing and Quality Assurance
  EN 4651 references EN 3475 test methods, covering visual inspection, mass, dimensions, ohmic resistance, plating adherence, solderability, and plating porosity. Quality management follows aerospace industry standards (e.g., EN 9133), ensuring consistent product reliability and traceability.

• Marking and Packaging
  Conductors must be delivered on spools or reels with clear identification including length, date, and inspection marks. Packaging requirements ensure protection without compromising the product, allowing customization of lengths per purchaser needs.

Applications

• Aerospace Electrical Systems
  Lightweight CCA conductors compliant with SIST EN 4651:2014 are ideal for aerospace electrical wiring harnesses and cables where reducing weight while maintaining electrical and mechanical performance is crucial.

• Aircraft Wiring
  This standard supports use in commercial and military aircraft, addressing demands for high strength, durability, corrosion resistance, and stable electrical properties under operational conditions.

• Spacecraft and Defense Equipment
  SIST EN 4651:2014 conductors meet rigorous aerospace requirements, making them suitable for spacecraft systems and defense electronics that require dependable lightweight electrical cabling solutions.

Related Standards

• EN 3475 Series - Aerospace electrical cable test methods referenced for verifying conductor properties such as resistance, plating, tensile strength, and more.
• EN 9133 - Aerospace quality management systems qualification procedures related to standard parts, ensuring consistent production quality.
• ASTM B566 - International specification for copper-clad aluminium wire materials and classes referenced for conductor strand composition.
• EN 4650 - Typically complementary in aerospace cable standards, covering related conductor or cable requirements.

Summary

SIST EN 4651:2014 is essential for manufacturers, suppliers, and designers of aerospace electrical cables utilizing copper-clad aluminium alloy conductors. It standardizes critical parameters for conductor materials, construction, and performance, helping to ensure lightweight, high-quality, and reliable electrical systems for aviation and aerospace applications. By following SIST EN 4651:2014, stakeholders can achieve compliance, enhance product safety, and optimize cable performance in demanding aerospace environments.

Keywords: aerospace electrical cables, copper-clad aluminium conductors, lightweight conductor standard, SIST EN 4651:2014, stranded conductors, aerospace wiring, conductor resistance, tensile strength, plating thickness, aerospace cable standards.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Leiter aus Aluminiumlegierung mit Kupferbeschichtung für elektrische Leitungen - ProduktnormSérie aérospatiale - Conducteurs en alliage d'aluminium chemisé cuivre pour câbles électriques - Norme de produitAerospace series - Copper-clad aluminium alloy conductors for electrical cables - Product standard49.060Aerospace electric equipment and systems49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 4651:2014SIST EN 4651:2014en01-julij-2014SIST EN 4651:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4651
April 2014 ICS 49.060 English Version
Aerospace series - Copper-clad aluminium alloy conductors for electrical cables - Product standard
Série aérospatiale - Conducteurs en alliage d'aluminium chemisé cuivre pour câbles électriques - Norme de produit Luft- und Raumfahrt - Leiter aus Aluminiumlegierung mit Kupferbeschichtung für elektrische Leitungen - Produktnorm This European Standard was approved by CEN on 24 August 2012.
CEN 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 obtained on application to the CEN-CENELEC Management Centre or to any CEN 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4651:2014 ESIST EN 4651:2014
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