1、BRITISH STANDARD AEROSPACE SERIESBS EN4434:2005Copper or copper alloy lightweight conductors for electrical cables Product standard (Normal and tight tolerances)The European Standard EN 4434:2005 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g
2、54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 4434:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 April 2006 BSI 2006ISBN 0 580 4809
3、4 1National forewordThis British Standard is the official English language version of EN 4434:2005. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Subcommittee ACE/6/-/2, Aerospace Cables, which has the
4、responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogueunder the section entitle
5、d “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance wi
6、th a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related internation
7、al and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last iss
8、ued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 4434November 2005ICS 49.060English VersionAerospace series - Copper or copper alloy lightweightconductors for electrical cables - Product standard (Normal andtight tolerances)Srie arospatia
9、le - Conducteurs tolrances rduites encuivre ou alliage de cuivre pour cbles lectriques - Normede produit (Tolrances normales et rduites)Luft- und Raumfahrt - Leichter Leiter aus Kupfer oderKupferlegierung fr elektrische Leitungen - Produktnorm(Normale und enge Toleranzen)This European Standard was a
10、pproved by CEN on 19 September 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nati
11、onalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notif
12、ied to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands
13、, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by
14、 any means reservedworldwide for CEN national Members.Ref. No. EN 4434:2005: E2Contents PageForeword 31 Scope .42 Normative references .43 Terms, definitions and symbols 44 Conductor materials and construction .45 Required characteristics 66 Test methods.77 Designation .88 Marking, packaging and del
15、ivery lengths .8EN 4434:20053Foreword This European Standard (EN 4434:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the
16、approval of the National Associations and the Official Services of the member countries of AECMA, 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 May 2006, and co
17、nflicting national standards shall be withdrawn at the latest by May 2006. 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 t
18、o the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lu
19、xembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 4434:200541 Scope This standard specifies the dimensions, linear resistance, mechanical characteristics, construction and mass of lightweight conductors, normal and tight
20、 tolerances, in copper or copper alloy for electrical cables for aerospace applications. It applies to stranded conductors, with a nominal cross-sectional area of 0,15 mm2to 14 mm2inclusive. The conductors for thermocouple extension and fire-resistant cables are not covered by this standard. 2 Norma
21、tive references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2083, Aerospace series Copper
22、or copper alloy conductors for electrical cables Product standard.EN 3475-100, Aerospace series Cables, electrical, aircraft use Test methods Part 100: General.EN 3475-301, Aerospace series Cables, electrical, aircraft use Test methods Part 301: Ohmic resistance per unit length.EN 3475-506, Aerospac
23、e series Cables, electrical, aircraft use Test methods Part 506: Plating continuity.EN 3475-507, Aerospace series Cables, electrical, aircraft use Test methods Part 507: Adherence of plating. IEC 60028 (1925-01), International standard of resistance for copper.IEC 60344 (1980-01), Guide to the calcu
24、lation of resistance of plain and coated copper conductors of low-frequency cables and wires.3 Terms, definitions and symbols For the purposes of this standard, the terms, definitions and symbols given in EN 3475-100 for conductors apply. 4 Conductor materials and construction 4.1 Materials Conducto
25、rs complying with this standard are made from strands in high conductivity annealed electrolytic copper (see IEC 60028) or copper alloy. The conductors for nominal cross-sectional areas 0,15 mm2and 0,25 mm2shall be made from copper alloy. 4.2 Metal plating The individual strands may be: uncoated (co
26、de A); or provided with uniform platings of tin (code B) or silver (code C) or nickel (code D). EN 4434:20055Plating thicknesses shall be at least 1,0 m for silver and at least 1,3 m for nickel. When tin plating is authorized, the thickness shall be sufficient to comply with the tests specified in E
27、N 3475-506 and EN 3475-507. 4.3 Electrolytic copper The elongation prior to rupture, for each copper strand, shall not be less than 10 %. The tensile strength, for each copper strand, shall be at least 220 MPa. 4.4 Copper alloy For cross-sectional areas 0,15 mm2and 0,25 mm2in copper alloy, use an al
28、loy with the following characteristics: maximum resistivity: 2,46 10-8 m1); minimum tensile strength: 350 MPa; minimum elongation: 6 %. 4.5 Construction of conductors 4.5.1 Lay length Up to 9 mm2cross-section inclusive (code 090), concentric conductors are used. The lay for the strands of a concentr
29、ic conductor, checked over the outside layer of a test piece 1 m long, shall be between eight times and 16 times the maximum diameter of this conductor. For sectional area of 14 mm2(code 140), the conductor comprises concentric or bunched conductors twisted together. The lay of the strands for the b
30、asic concentric or bunched conductors shall not exceed 30 times the diameter of the concentric or bunched conductor in question. The lay for concentric (or bunched) conductors, measured over the outer layer of the conductor, shall be between 8 times and 16 times the maximum conductor diameter. In al
31、l cases the lay of the outer layer shall be left-hand. 4.5.2 Joints The conductors shall be free from any joints. Each strand comprising the conductors may, however, include soldered or brazed joints. For strands with a diameter of 0,25 mm or greater, butt joints shall be used. The distance between
32、two joints in individual strands shall exceed 3 m, measured between different strands. 4.5.3 Compaction Compaction of the conductor, causing deformation of the strands or damage to the plating, is not permitted. 1) Or 24,6 mm2/km. EN 4434:200565 Required characteristics 5.1 General Table 1 defines n
33、ormal tolerances, Table 2 defines tight tolerances of lightweight conductors. If nothing is mentioned in the product standard, normal tolerances shall be applied. 5.2 Normal tolerances See Table 1. Table 1 Diameter of conductoraLinear resistancemax. at 20 C bBreakingload Mass of conductor CodeNomina
34、l section Number ofstrands Nominal diameter ofstrands mm /km N kg/km acAWGdNumberofmissingstrandsmm2mm min. max. A and C B and D min. min. max. 001 002 004 006 010 012 020 030 050 051 090 140 0,15 0,25 0,40 0,60 11,20 2355 f9 g14 g1919191919193737376112727 7 0,10 0,12 0,15 0,20 0,25 0,30 0,25 0,32 0
35、,40 0,32 0,30 0,30 0,45 0,55 0,70 0,94 1,18 1,39 1,68 2,12 2,69 2,72 0,49 0,60 0,75 1,00 1,25 1,50 1,75 2,20 2,82 2,83 4,20 5,40 14910655,331,019,613,610,26,4 4,0 3,9 2,1 1,44 160 e114e60 33,2 21,1 14,5 10,9 6,84,24,12,31,58 4667711271982853856451 0001 0001,20 1,77 2,83 5,15 8,16 11,6316,0226,0641,2
36、343,2576114 1,40 2,00 3,26 5,70 8,90 12,50 17,30 27,50 44,00 45,80 85 126 2624222018161412101086000000000000aValues for minimum diameter and minimum mass are the same as in EN 2083 to allow the use of existing tooling (stripping and crimping) bThe linear resistance at other temperatures may be calcu
37、lated using the formulae given in EN 3475-301. cNot taking into consideration metal platings, assuming that their effect is minimal. dAWG: closest American Wire Gage eNot available as code letter B fThis gives a more flexible construction which may be used as an alternative. gCodes 090 and 140: Line
38、ar resistance calculated in accordance with the procedure in IEC 60344; where: k1is 1,04 (A and C) and 1,145 (B and D); k2is 1,04 (code 090) and 1,02 (codes 140); k3is 1 (code 090) and 1,05 (codes 140). EN 4434:200575.3 Tight tolerances See Table 2. Table 2 Diameter of conductor Linear resistancemax
39、. at 20 C aBreakingload Mass of conductor Code Nominal section Number of strandsNominal diameter of strands mm /km N kg/km bAWG cNumberofmissingstrandsmm2mm min. max. A and C B and D min. min. max. 0010020040060100120200300510901400,15 0,25 0,40 0,60 11,20 235 9 e14 e19191919191937376112727 7 0,10 0
40、,12 0,15 0,20 0,25 0,30 0,25 0,32 0,32 0,30 0,30 0,47 0,555 0,71 0,94 1,19 1,41 1,69 2,13 2,73 3,55 4,8 0,49 0,585 0,73 0,97 1,22 1,45 1,73 2,18 2,77 3,85 5,20 14910655,3 31,0 19,6 13,6 10,2 6,43,92,11,44 160 d114d6033,2 21,1 14,5 10,9 6,84,12,31,58 4667711271982853856451 0001,20 1,77 2,83 5,15 8,16
41、 11,63 16,02 26,06 43,25 761141,40 2,03,26 5,70 8,90 12,50 17,30 27,50 45,8 8512626 24 22 20 18 16 14 12 10 8600000000000aThe linear resistance at other temperatures may be calculated using the formulae given in EN 3475-301. bNot taking into consideration metal platings, assuming that their effect i
42、s minimal. cAWG: closest American Wire Gage. dNot available as code letter B. eCodes 090 and 140: Linear resistance calculated in accordance with the procedure in IEC 60344; where: k1is 1,04 (A and C) and 1,145 (B and D); k2is 1,04 (code 090) and 1,02 (codes 140); k3is 1 (code 090) and 1,05 (codes 1
43、40). 6 Test methods See EN 3475-100. EN 4434:200587 Designation EXAMPLE Description block CONDUCTOR Identity block EN4434C010T Number of this standard C = Material code for plating (see 4.2) Code for nominal cross-sectional area (see Table 1) T : for tight tolerances / blank for normal tolerances NO
44、TE If necessary, the code I9005 shall be placed between the description block and the identity block. 8 Marking, packaging and delivery lengths On delivery the identification reference shall be completed by the length, date and inspection mark. The conductors shall be delivered on spools or reels. T
45、hey shall be wound in a regular and uniform manner and require an appropriate protection, not affecting the product delivered. Each unit delivered may contain one or several lengths as specified by the purchaser. EN 4434:2005blankBS EN 4434:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standa
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