1、a l a a 0 AECMA STANDARD NORME AECMA AECMA NORM prEN 2083 Edition 3 September 2001 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Supersedes edition 2 Descriptors: Ja
2、nuary 1999 ENGLISH VERSION Aerospace series Copper or copper alloy conductors for electrical cables Product standard Srie arospatiale Luft- und Raumfahrt Conducteurs en cuivre ou en alliage de cuivre pour cbles lectriques Norme de produit Leiter aus Kupfer oder Kupferlegierung fr elektrische Leitung
3、en Prod u ktnorrn a This “Aerospace series“ Standard has been drawn up under the responsr TAN (The It will be submitted as a draft European Standard to formal vote. r Standardization) for Replace page 1 of the previous edition by this page The equivalent versions in French and German languages can b
4、e supplied by B.N.A.E. - Technopolis 54 - 199, nie JeanJacques Rousseau Declassification approved 92138 ISSY - LES - MOULINEAUX CEDEX - FRANCE 2001-09-28 aecma 20t Page 3 prEN 2083: 1999 1 Scope This standard specifies the dimensions, linear resistance, mechanical characteristics, construction and m
5、ass of conductors 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 mm2 to 107 mm2 inclusive. The conductors for thermocouple extension and fire-resistant cables are not covered by this standard.
6、 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisi
7、ons of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. IEC publication 28 (1925) IEC publication 344 (1980) EN 3475-100 EN 3475-301 EN 3475-506 EN 3475-5
8、07 International standard of resistance for copper Guide to the calculation of resistance of plain and coated copper conductors of low-frequency cables and wires Aerospace series - Cable, electrical, aircraft use - Test methods - Part 100: General 1) Aerospace series - Cable, electrical, aircraft us
9、e - Test methods - Part 301 : Electrical resistance per unit length 1) Aerospace series - Cable, electrical, aircraft use - Test methods - Part 506: Plating continuity 1) Aerospace series - Cable, electrical, aircraft use - Test methods - Part 507: Adherence of plating 1) 3 Definitions and symbols F
10、or the purposes of this standard, the definitions and symbols given in EN 3475-100 for conductors apply. 4 Conductor materials and construction 4.1 Materiais Conductors complying with this standard are made from strands in high conductivity annealed electrolytic copper (see IEC 28) or copper alloy.
11、The conductors for nominal cross-sectional areas 0,15 mm2 and 0,25 mm2 shall be made from copper alloy. I) Published as AECMA Prestandard at the date of publication of this standard Page4 STD-AECMA PREN 2083-ENGL 1999 1012311 0015676 BT5 prEN 2083: 1999 4.2 Metal plating The individual strands may b
12、e: - uncoated (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 ,O pm for silver and 1,3 pm for nickel. When tin plating is authorized, the thickness shall be sufficient to comply with the tests specified in E
13、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 I O % The tensile strengh, for each copper strand, shall be at least 220 MPa. 4.4 Copper alloy For cross-sectional areas 0,15 mm2 and 0,25 mmz in copper alloy, use an a
14、lloy with the following characteristics: - maximum resistivity: 2,46 x IO“ Sl.m 2); - minimum tensile strength: 350 MPa; - minimum elongation: 6 %. 4.5 Construction of conductors 4.5.1 Lay length Up to 9 mm2 cross-section inclusive (code 090), concentric conductors are used. The lay for the strands
15、of a concentric conductor, checked over the outside layer of a test piece 1 m long, shall be between 8 times and 16 times the maximum diameter of this conductor. For sectional areas between 14 mm2 and 107 mm2 (codes 140 to 107), the conductor comprises concentric or bunched conductors twisted togeth
16、er. The lay of the strands for the basic 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 t
17、he maximum conductor diameter. In all 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
18、shall be used. The distance between two joints in individual strands shall exceed 3 m, measured between differents strands. 4.5.3 Compaction Compaction of the conductor, causing deformation of the strands or damage to the plating, is not permitted. 2) or 24,6 R.mm2/km 5 Required characteristics Nomi
19、nal section mm2 See table 1. Number of strands Table I 0,15 0,25 0.40 0,60 1 1,20 2 3 5 5e 9 14 22 34 42 53 68 85 107 I 19 19 19 19 19 19 37 37 37 61 127 27x7 37x12 37x19 37x23 37x29 37x37 48x36 61 x36 002 004 006 a The linear resistance at other temperatures may be calculated using the formulas giv
20、en in EN 3475-301. Not taking into consideration metal platings, assuming that their effect is minimal. AWG: closest American Wire Gage Not available as code letter B This gives a more flexible construction which may be used as an alternative. a) Linear resistance calculated in accordance with the p
21、rocedure in IEC 344; where k, k, k3 b) Maximum mass: M = 6 x S x k, x k3 x kt where 6 is 8,9 (Cu); S k, and ks kt e Codes 2 090: is 1 ,O4 (A and C) and 1,145 (B and D); is 1 ,O4 (code 090) and 1 ,O2 (codes 2 140); is 1 (code 090) and 1 ,O5 (codes 2 140). is actual nominal section in mm2: is 1,04 (co
22、efficient of strand diameter at maximum: based on a strand of 0,25 mm nominal and 0,255 mm maximum 0,2552/0,252). Code 090: M is 9,625 Codes 2 140: M is 9,91 S are the same coefficients as those for linear resistance; 1 o1 o o1 2 020 030 050 051 O90 140 220 340 420 530 680 850 107 Nominal diameter J
23、f stranas mm 0,lO 0,12 0,15 0,20 0,25 0,30 0,25 0,32 0,40 0,32 0,30 0,30 0,25 0,25 0,25 0,25 0,25 0,25 0,25 Diameter of conductor mm min. 0,45 0,55 0,70 0,94 1,18 1,39 1,68 2,12 2,69 2,72 - - - - - - - - - - - max. 0,53 0,62 OJO 1 ,O4 1,29 1,53 1,82 2,28 2,88 2,94 4,40 5,50 6,80 8,60 9,50 10,70 12,l
24、O 13,60 15,20 - Wkm Band D min. 160 46 114 67 60 71 33,2 127 21,l 198 14,5 285 10,9 385 68 645 4,2 1000 4,l 1000 23 - 1,58 - 0,97 - 0,61 - 0,51 - 0,40 - 0,32 - 0,25 - 0,20 - Page 5 prEN 2083: 1999 Mass of conductor kgikm min. 1,20 1,77 2,83 5,15 8,16 11,63 16,02 26,06 41,23 43,25 - max. - 1,60 2,18 3,43 5,95 9,16 13,20 18,OO 28,50 46,OO 48,OO 87 133 21 6 342 414 522 666 841 I069 7 - AWG 26 24 22 20 18 16 14 12 10 10 8 6 4 2 1 O O0 O00 O000 - Number of missing strands O O O O O O O O O O O O O 2 2 3 3 4 5 -
