Bsi bs en 04681 002 2012

BSI Standards PublicationBS EN 4681-002:2012 Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium Part 002: General... BS EN 4681-

BSI Standards Publication

BS EN 4681-002:2012

Aerospace series — Cables, electric, general purpose, with conductors in aluminium or

copper-clad aluminium

Part 002: General

This British Standard is the UK implementation of EN 4681-002:2012 The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology

A list of organizations represented on this committee can be obtained on request to its secretary

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

© The British Standards Institution 2012

Published by BSI Standards Limited 2012 ISBN 978 0 580 77223 8

ICS 49.060

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2012

Amendments issued since publication

BS EN 4681-002:2012

EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

October 2012 ICS 49.060

English Version Aerospace series - Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium - Part 002:

General

Série aérospatiale - Câbles électriques, d'usage général,

avec conducteurs en aluminium ou en aluminium chemisé

cuivre - Partie 002: Généralités

Luft- und Raumfahrt - Elektrische Leitungen, zur allgemeinen Verwendung, mit Leitern aus Aluminium oder kupferbeschichtetem Aluminium - Teil 002: Allgemeines

This European Standard was approved by CEN on 25 February 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

C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä I S C H E S K O M I T E E FÜ R N O R M U N G

Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2012 CEN All rights of exploitation in any form and by any means reserved

worldwide for CEN national Members

Ref No EN 4681-002:2012: E

Contents Page

Foreword 3

1 Scope 4

2 Normative references 4

3 Terms, definitions and symbols 5

4 List of product standards 5

5 Materials and construction 5

5.1 Materials 5

5.2 Construction 5

6 Identification and marking 7

6.1 Single core 8

6.2 Multicore 8

6.3 Designation 10

6.4 Manufacturer identification marking 10

7 Technical specification 10

BS EN 4681-002:2012

EN 4681-002:2012 (E)

3

Foreword

This document (EN 4681-002:2012) has been prepared by the Aerospace and Defence Industries Association

of Europe - Standardization (ASD-STAN)

After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: 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 the United Kingdom

1 Scope

This European Standard specifies the list of product standards and common characteristics of electrical cables for general purpose with conductors in aluminium or copper-clad aluminium, intended for installation in aircraft electrical systems

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies

EN 3719, Aerospace series — Aluminium or aluminium alloy conductors for electrical cables — Product standard

EN 3838, Aerospace series — Requirements and tests on user-applied markings on aircraft electrical cables

EN 4651, Aerospace series — Copper-clad aluminium alloy conductors for electrical cables — Product standard 1)

EN 4681-001, Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium — Part 001: Technical specification

EN 4681-003, Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium — Part 003: AD family, single UV laser printable — Product standard 2)

EN 4681-004, Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium — Part 004: ADA family, single and multicore assembly — Product standard 2)

EN 4681-005, Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium — Part 005: AZ family, single UV laser printable for use in low pressure atmosphere — Product standard 2)

EN 4681-006, Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium — Part 006: AZA family, single and multicore assembly for use in low pressure atmosphere — Product standard 2)

ISO 2574, Aircraft — Electrical cables — Identification marking

TR 4684, Aerospace series — Electrical Technology and component definition 2)

TR 6058, Aerospace series — Cable code identification list 3)

1) Published as ASD-STAN Prestandard at the date of publication of this standard (www.asd-stan.org)

2) In study at the date of publication of this standard

3) Published as ASD-STAN Technical Report at the date of publication of this standard (www.asd-stan.org)

BS EN 4681-002:2012

EN 4681-002:2012 (E)

5

3 Terms, definitions and symbols

For the purposes of this standard, the terms, definitions and symbols given in TR 4684 apply

4 List of product standards

EN 4681-003, Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium — Part 003: AD family, single UV laser printable — Product standard

EN 4681-004, Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium — Part 004: ADA family, single and multicore assembly — Product standard

EN 4681-005, Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium — Part 005: AZ family, single UV laser printable for use in low pressure atmosphere — Product standard

EN 4681-006, Aerospace series — Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium — Part 006: AZA family, single and multicore assembly for use in low pressure atmosphere — Product standard

5 Materials and construction

5.1 Materials

These cable conductors shall be made of aluminium or copper clad aluminium and nickel-plated according to

EN 3719 or EN 4651 code D (except otherwise specified in product standards)

5.2 Construction

5.2.1 Number of cores

See Table 1

Table 1

For two cores or more:

 The lay length of the outer lay shall not be less than eight times and not more than 16 times the nominal diameter of the cabled cores

 The core shall not be spliced

Where filler cores are used, on 4 (four) cores and 5 (five) cores assembly, materials shall be compliant with the operating temperatures

 factor for mass: 1,03;

 factor for ohmic resistance: 1,03

5.2.2 Colour coding of single core cables

For differentiation with copper cables, all single core cables shall be of Light GREY – colour code K as defined

in Table 2, and markings shall be as defined in Clause 6

Table 2 — Colour code

a For information: international colour code

5.2.3 Colour coding of unscreened, multicore cables

See Table 3, differentiation with copper cables shall be given by markings as defined in Clause 6

Table 3 — Code P Number

of cores

NOTE Jacket (if requested): Light grey, manufacturer markings according to Table 4

BS EN 4681-002:2012

EN 4681-002:2012 (E)

7

Table 4 — Colour of manufacturer identification markings Colours

Nominal conductor

a

Blue

0,25 24 0,6 20 1,2 16

3 12

9 8

22 4

Green

0,15 26 0,4 22

1 18

2 14

5 10

14 6

a AWG = Closest American Wire Gage

6 Identification and marking

The identification and marking of cables by the manufacturer shall be in accordance with ISO 2574 and this standard

As the designation, required for orders, is generally too long for use in electrical drawings, a shorter cross designation (without colour information) is given in TR 6058 plus the corresponding nearest AWG (gauge code)

To facilitate further manufacturing operations and differentiate these aluminium cables from copper cables, markings are necessary on both core(s) and jacket (when there is a jacket)

Dark spots are not necessary on jacket

6.1 Single core

For differentiation with copper cables, colour of manufacturer identification markings shall be in accordance with Table 5 for size 24 to size 4/0

Table 5 — Colour of manufacturer identification markings Family Colours

For size 22, some dashes are positioned between adjacent manufacturer markings

NOTE From size 24 to size 12, dark spots will be added during markings applied by the users

6.2 Multicore

For differentiation with copper cables, colour of manufacturer identification markings shall be in accordance with Table 4 for core size 24 to size 4/0

From core size 24 to size 4, in addition to cable manufacturer identification markings, darks spots are positioned all along according to the definition described hereafter and in Figure 1 and Table 6

NOTE These dark spots are necessary to facilitate further manufacturing operations

Figure 1

BS EN 4681-002:2012

EN 4681-002:2012 (E)

9

Table 6 — Spots dimensions

Dimensions in millimetres

Nominal

conductor

cross-section AWG

− 0,1 0,5 0,5 ± 0,02 0,5 ± 0,02

0,4 22 6,6+ 0,2

− 0,1 0,5 0,5 ± 0,02 0,5 ± 0,02 0,6 20 6,6+ 0,2

− 0,1 0,5 0,5 ± 0,02 0,5 ± 0,02

− 0,1 0,5 0,5 ± 0,02 0,5 ± 0,02 1,2 16 7,8+ 0,2

− 0,1 0,5 0,5 ± 0,02 0,5 ± 0,02

− 0,1 0,5 0,5 ± 0,02 0,5 ± 0,02

− 0,1 0,5 0,5 ± 0,02 0,5 ± 0,02

5 10 18,0± 0,2 0,6 1,8 ± 0,04 0,5 ± 0,04

9 8 22,5± 0,2 0,6 1,8 ± 0,04 0,5 ± 0,04

14 6 22,0± 0,2 0,6 1,8 ± 0,04 0,5 ± 0,04

22 4 22,5± 0,2 0,6 1,8 ± 0,04 0,5 ± 0,04

a AWG = Closest American Wire Gage

6.3 Designation

EXAMPLES

Single wire: designation EN4681-003A004K Cross reference: AD 22

Pair: designation EN4681-004B006P Cross reference: ADB 20

6.4 Manufacturer identification marking

This shorter designation is used for cable and manufacturer identification marking as in the following example, see Figure 2:

Reference to EN standard cable

4 spaces 4)

Type code

Specific code

Gauge code

Manufacturer country code

Manufacturer code

Year of manufacturing

Figure 2

The cables (single core or jacketed cable) shall be capable of being printed with the user-applied markings according to EN 3838

7 Technical specification

See EN 4681-001

4) Spaces are mandatory, with a possible exception for the second one

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