1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4651 Edition P 2 February 2011 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Supersedes edition P
2、1 of September 2008 Descriptors: ENGLISH VERSION Aerospace series Copper-clad aluminium alloy conductors for electrical cables Product standard Srie arospatiale Conducteurs en alliage daluminium chemis cuivre pour cbles lectriques Norme de produit Luft- und Raumfahrt Leiter aus Aluminiumlegierung mi
3、t Kupferbeschichtung fr elektrische Leitungen Produktnorm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It ha
4、s been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the s
5、tandard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement
6、 the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 28 February 2011 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copy
7、right 2011 by ASD-STAN prEN 4651:2011 (E) 2 Contents Page Foreword2 1 Scope 3 2 Normative references 3 3 Definitions and symbols .3 4 Conductor materials and construction .3 5 Required characteristics.5 6 Test methods6 7 Quality assurance6 8 Designation 6 9 Marking, packaging and delivery lengths .7
8、 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4651:2011 (E)
9、 3 1 Scope 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 are
10、a of 0,22 mm2to 22 mm2inclusive. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applied. For undated references, the latest edition of the referenced document (including any amendments) ap
11、plies. EN 3475 (all parts), Aerospace series Cables, electrical, aircraft use Test methodsEN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts ASTM B566-93, Standard specification for copper-clad aluminium wire 1)3 Definitions and symbols For the
12、purposes of this standard, the definitions and symbols given in EN 3475-100 for conductors apply. 4 Conductor materials and construction 4.1 Materials Conductor for nominal cross-sectional areas 0,25 mm2(code 002) and 0,40 mm2(code 004) are built from a 1 6 strands construction. The central strand i
13、s a copper alloy strand or equivalent, surrounded by 6 copper clad aluminium strands. The conductors in accordance with this standard shall consist of individual copper clad aluminium strands (see ASTM B566-93(98) class 15A) with the following composition, for cross-sections of 0,25 mm2to 22,00 mm2i
14、nclusive: For aluminium: See Table 1. Table 1 % Si Fe AI min. 99,5 max. 0,10 0,40 For copper: ETP copper purity 99,9 % min. 1) Published by: ASTM National (US) American Society for Testing and Materials http:/www.astm.org/ prEN 4651:2011 (E) 4 4.2 Metal plating The individual strands may be: uncoate
15、d (code A); or provided with uniform platings of tin (code B) or silver (code C) or nickel (code D). Plating thicknesses shall be at least 1,0 m for silver and according to Table 2 for nickel. When tin plating is authorized, the thickness shall be sufficient to comply with the tests specified in EN
16、3475-506 and EN 3475-507. Table 2 Plating thickness Nominal diameter of strands m mm min. max. AWG 0,20 1,3 2,3 24 20 0,25 1,3 2,3 22 18 14 0,275 1,3 2,4 8 0,30 1,3 2,6 16 0,32 1,3 2,6 12 10 0,51 1,3 3,5 6 4 4.3 Characteristics The maximum resistivity at 20 C shall be: 2,78 10-8.m. The elongation at
17、 rupture on the complete conductor taken from the finished wire shall be 6 %. (Need to add a maximum value still under evaluation). The tensile strength of the complete conductor taken from the finished wire shall be at least 138 MPa (138 N/mm2). The elastic limit (at 0,2 % wire elongation) of the c
18、omplete conductor taken from the finished wire shall be at least 90 MPa (90 N/mm2). 4.4 Construction of conductors 4.4.1 Lay length Up to 5 mm2cross-section inclusive (code 050), concentric conductors are used. The lay for the strands of a concentric conductor, checked over the outside layer of a te
19、st piece 1 m long, shall be between eight times and 16 times the maximum diameter of this conductor. From sectional area of 9 mm2(code 090), the conductor comprises concentric or bunched conductors twisted together. The lay of the strands for the basic concentric or bunched conductors shall not exce
20、ed 30 times the diameter of the concentric or bunched conductor in question. prEN 4651:2011 (E) 5 The lay for concentric (or bunched) conductors, measured over the outer layer of the conductor, shall be between eight times and 16 times the maximum conductor diameter. In all cases the lay of the oute
21、r layer shall be left-hand. 4.4.2 Joints The conductors shall be free from any joints. Each strand composing the conductors may, however, include soldered or brazed or butt joints. The distance between two joints in individual strands shall exceed 3 m, measured between different strands. 4.4.3 Compa
22、ction Compaction of the conductor, if causing deformation of the strands with damage to the plating, is not permitted. A minimum compaction rate of 95 % is acceptable. NOTE The minimum compaction rate (%) is defined by the diameter of the compacted conductor by the diameter of the uncompacted conduc
23、tor ( 100). 5 Required characteristics According to Table 3. Table 3 Nominal cross-section Number of strands Diameter of conductor Mass mm mm mm Resistance max. at 20 C b c max.bAWG d Code Nominal diameter of strands a min. max. /km kg/km Number of missing single strands 002 0,25 1 6 0,20 0,56 0,58
24、145,00 1,10 24 0 004 0,40 1 6 0,25 0,71 0,73 90,20 1,70 22 0 006 0,60 19 0,20 0,94 0,97 49,60 2,50 20 0 010 1,00 19 0,25 1,19 1,22 33,20 3,85 18 0 012 1,20 19 0,30 1,41 1,45 23,00 5,35 16 0 020 2,00 37 0,25 1,69 1,73 15,50 8,35 14 0 030 3,00 37 0,32 2,13 2,18 10,90 12,50 12 0 050 5,00 61 0,32 2,73 2
25、,77 5,80 22,50 10 0 090 9,00 7 19 0,275 3,55 3,85 3,80 35,50 8 0 140 14,00 7 10 0,51 4,80 5,20 2,30 55,50 6 0 220 22,00 7 15 0,51 5,90 6,30 1,50 92,00 4 0 aStrands nominal diameter are given for information only. bFor other temperatures this may be calculated using the formula shown in EN 3475-301.
26、cNot taking into consideration metal plating, assuming that their effect is minimal. dAWG closest American Wire Gage. prEN 4651:2011 (E) 6 6 Test methods According to EN 3475-100. See Table 4. Table 4 EN 3475- Test Details 201 Visual examination Applicable 202 Mass Applicable, see Table 3. 203 Dimen
27、sions Applicable, see Table 3 and 4.1. 301 Ohmic resistance per unit length Applicable, see Table 3. 418 Thermal endurance for conductors Not applicable Applicable only on finished product, according to concerned Standard 505 Tensile test on conductors and strands Applicable, see 4.3. 506 Plating co
28、ntinuity Applicable 507 Adherence of plating Applicable 508 Plating thickness Applicable, see 4.2. 509 Solderability Applicable for codes B and C 514 Porosity of copper cladding on aluminium strands Applicable 7 Quality assurance See EN 9133. 8 Designation EXAMPLE Description block CONDUCTOR Identit
29、y block EN4651C010Y Number of this standard C Material code for plating (see 4.2) Code for nominal cross-sectional area (see Table 3) Particular code only when necessary NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. prEN 4651:2011 (E) 7 9 Mar
30、king, 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. They 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.
