1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 4612-008:2011Aerospace series Cables,electrical, for general purpose,single and multicore assemblyXLETFE Family jacketed orscreened and jacketedPart 008: Silver plated copp
2、er Operatingtemperatures, between 65 C and 150C Single extruded wall for applications, with jacket and screen (braid) - UV laser printable - Product standardBS EN 4612-008:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 4612-008:2011.The UK participation in
3、 its preparation was entrusted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract.
4、Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 75531 6ICS 49.060Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2011.Amendment
5、s issued since publicationDate Text affectedBS EN 4612-008:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4612-008 October 2011 ICS 49.060 English Version Aerospace series - Cables, electrical, for general purpose, single and multicore assembly XLETFE Family jacketed or screened and jacket
6、ed - Part 008: Silver plated copper - Operating temperatures, between - 65 C and 150 C - single extruded wall for open applications, with jacket and screen (braid) - UV laser printable - Product standard Srie arospatiale -Cbles, lectriques, dusage gnral, mono et multiconducteurs - Famille XLETFE - G
7、ains ou blinds et gains - Partie 008: Cuivre argent - Tempratures de fonctionnement comprises entre - 65 C et 150 C - Fil simple isol pour applications externes, gain et blind (tress) - Marquable au laser UV - Norme de produit Luft- und Raumfahrt - Ein- und mehradrige elektrische Leitungen fr allgem
8、eine Verwendung - XLETFE Familie - Mit Mantel oder geschirmt und Mantel - Teil 008: Kupfer versilbert - Betriebstemperaturen zwischen - 65 C und 150 C - Einfach extrudierte Isolierung fr externe Verwendung, mit Mantel und Schirm (Geflecht) - UV-Laser bedruckbar - Produktnorm This European Standard w
9、as approved by CEN on 20 August 2011. 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 n
10、ational 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 la
11、nguage 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
12、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Bru
13、ssels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4612-008:2011: EBS EN 4612-008:2011EN 4612-008:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms, definitions and symbols .44 Materials and constr
14、uction .55 Required characteristics .76 Quality assurance . 107 Designation . 118 Identification and marking . 119 Packaging, labelling and delivery lengths . 1110 Technical specification 11Annex A (normative) Formulae for calculating braid details . 12A.1 The filling factor Kfis given by the follow
15、ing formula 12A.2 Lay factor . 12A.3 Coverage 12BS EN 4612-008:2011EN 4612-008:2011 (E) 3 Foreword This document (EN 4612-008:2011) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with t
16、he 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 identica
17、l text or by endorsement, at the latest by April 2012, and conflicting national standards shall be withdrawn at the latest by April 2012. 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 respons
18、ible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland
19、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 4612-008:2011EN 4612-008:2011 (E) 4 1 Scope This European Standard specifies
20、 the characteristics of UV laser printable jacket, silver plated copper conductor, electrical cables Crosslinked Ethylene Tetra Fluoro Ethylene co-polymer (XLETFE) family for use in the on-board electrical systems of aircraft at operating temperatures between 65 C and 150 C, operating at voltages no
21、t exceeding 600 V r.m.s and frequencies not exceeding 2 000 Hz. These cables are suitable for airframe use without additional protection when the jacket is present. When the jacket is stripped back the cores may need additional protection. In case of conflict between this standard and other referenc
22、ed documents the requirements of this standard shall take precedence. 2 Normative 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 d
23、ocument (including any amendments) applies. EN 2083, Aerospace series Copper and copper alloys conductors for electrical cables Product standard EN 2235, Aerospace series Single and multicore electrical cables, screened and jacketed EN 3475-100 (all parts), Aerospace series Cables, electrical, aircr
24、aft use Test methods Part 100: General EN 4611-002, Aerospace series Cables, electrical, for general purpose, single and multicore assembly XLETFE Family Part 002: General 1)EN 4611-005, Aerospace series Cables, electrical, for general purpose, single and multicore assembly XLETFE Family Part 005: S
25、ilver plated copper Operating temperatures, between 65 C and 150 C Single extruded wall for enclosed applications UV laser printable Product standard 1) EN 4612-002, Aerospace series Cables electrical, for general purpose, single and multicore assembly XLETFE Family Jacketed or screened and jacketed
26、 Part 002: General EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts 3 Terms, definitions and symbols For the purposes of this document, the terms, definitions and symbols given in EN 3475-100 apply. 1) Published as ASD-STAN Prestandard at the
27、date of publication of this standard (www.asd-stan.org). BS EN 4612-008:2011EN 4612-008:2011 (E) 5 4 Materials and construction 4.1 Materials These cables shall consist of the following: cores according to EN 4611-005; number of cores 1 (one) to 4 (four). 2 (two) core to 4 (four) core shall be twist
28、ed together according to EN 2235. Filler cores shall not be permitted. Screen: silver plated copper stranded woven screen; for dimensions of strands, see Table 1; material according to EN 2083, tests according to EN 3475-100; construction according to EN 2235. Outer jacket: XLETFE; it shall be possi
29、ble to mark the jacket by UV laser printing; minimum thickness single core and 2 (two) core shall be 0,13 mm; minimum thickness 3 (three) core and 4 (four) core shall be 0,15 mm. 4.2 Construction See Table 1. BS EN 4612-008:2011EN 4612-008:2011 (E) 6 Table 1 Multicore screened and jacketed Number of
30、 cores Code for nominal section AWG aLinear resistance at 20 C Screen strands nominal diameter External diameter Mass /km mm mm kg/km max. max. max.1 001 b26 149,0 0,10 1,72 6,54 002 b24 106,0 1,81 7,40 004 22 55,3 1,98 9,66006 20 31,0 2,25 13,30 010 18 19,60,13 2,49 18,92 012 16 14,9 2,72 21,85020
31、14 10,2 3,19 30,18 030 12 6,4 3,64 42,082 001 b26 153,5 0,10 2,54 10,43 002 b24 109,2 2,72 12,53 004 22 57,0 3,06 16,96006 20 32,0 3,60 24,09 010 18 20,20,13 4,08 32,34 012 16 15,4 4,54 39,12020 14 10,5 5,48 55,96 030 12 6,6 6,44 83,553 001 b26 153,5 0,10 2,67 14,16 002 b24 109,2 2,87 16,92 004 22 5
32、7,0 3,23 22,56006 20 32,0 3,82 32,72 010 18 20,20,13 4,33 44,56 012 16 15,4 4,83 54,43020 14 10,5 5,91 79,79 030 12 6,6 6,88 118,734 001 b26 153,5 0,10 2,88 17,38 002 b24 109,2 3,10 21,15 002 22 57,0 3,51 28,30004 20 32,0 4,17 41,54 006 18 20,20,13 4,75 56,99 010 16 15,4 5,30 69,99012 14 10,5 6,50 1
33、03,10 020 12 6,6 7,59 154,41aAWG = Closest American Wire Gage. bSilver plated copper alloy component conductor. BS EN 4612-008:2011EN 4612-008:2011 (E) 7 4.3 Colour coding of cores and jacket See EN 4611-002. 5 Required characteristics According to EN 2235 and EN 3475-100. See Table 2. Table 2 EN 34
34、75- Test Details 201 Visual examination Applicable 202 Mass Applicable; see Table 1. 203 Dimensions Applicable; see Table 1. Lay Factor Less than 3 in accordance with Annex A (normative). Screen coverage, see EN 2235. Applicable not less than 85 % in accordance with Annex A (normative). 301 Ohmic re
35、sistance per unit length Applicable; see Table 1. 302 Voltage proof test Applicable 303 Insulation resistance Applicable (20 2) C, 500 M.km minimum (95 2) C, 1 M.km minimum 304 Surface resistance Applicable 12 500 M.mm minimum 305 Overload resistance Not applicable 401 Accelerated ageing Applicable
36、Temperature (200 3) C 402 Shrinkage and delamination Applicable Temperature (150 5) C Maximum shrinkage at each end of cable: Jacket: 2 mm on size 001 to 010 3 mm on size 012 to 030 Cores: 0,80 mm on size 001 to 006 1,00 mm on size 010 to 012 1,20 mm on size 020 to 030 continued BS EN 4612-008:2011E
37、N 4612-008:2011 (E) 8 Table 2 (continued) EN 3475- Test Details 403 Delamination and blocking Applicable Temperature (150 5) C 404 Thermal shock Applicable Temperatures ( 65 2) C and (260 5) C Maximum shrinkage at each end of cable: Jacket: 2 mm on size 001 to 010 3 mm on size 012 to 030 Cores: 0,80
38、 mm on size 001 to 006 1,00 mm on size 010 to 012 1,20 mm on size 020 to 030 405 Bending at ambient temperature Applicable 406 Cold bend test Applicable Temperature ( 65 2) C 407 Flammability Applicable Methods 1 and 2 Flame application 15 s Extinguishing time: 3 s max. 408 Fire resistance Not appli
39、cable 409 Air-excluded ageing Not applicable 410 Thermal endurance Not applicable 411 Resistance to fluids Applicable Volume swell not greater than 10 % Scrape not applicable 412 Humidity resistance Applicable Method B Temperature (90 2) C Duration 672 hours 413 Wrap back test Not applicable 414 Dif
40、ferential scanning calorimeter (DSC test) Not applicable continued BS EN 4612-008:2011EN 4612-008:2011 (E) 9 Table 2 (continued) EN 3475- Test Details 501 Dynamic cut-through Applicable to jackets of single core cables only Temperature (150 3) C Size code Nominal section Cut-throughforce to screen m
41、m2N 001 0,15 7,5 002 0,20 10004 0,40 15 006 0,60010 1,00 012 1,20020 2,00 25 030 3,00502 Notch propagation Not applicable 503 Scrape abrasion Applicable to jackets of single core cables only Temperature (150 3) C Minimum number of cycles to screen = 100 Size code Nominal section Load mm2N 001 0,15 3
42、,0 002 0,20 3,5 004 0,40 4,0 006 0,60 4,5 010 0,95 5,0 012 1,35 5,5 020 1,80 6,0 030 3,00 6,5 504 Torsion Not applicable 505 Tensile test on conductors and strands Applicable 506 Plating continuity Applicable 507 Adherence of plating Applicable continued BS EN 4612-008:2011EN 4612-008:2011 (E) 10 Ta
43、ble 2 (concluded) EN 3475- Test Details 508 Plating thickness Not applicable 509 Solderability Applicable braid only 510 Tensile strength and elongation of extruded insulation, sheath and jacket material Applicable for jacket Eb 75 % minimum TS 34 MPa minimum 511 Cable-to-cable abrasion Applicable s
44、ize code 006 (single core) Load 1 kg 6 000 000 cycles to screen 512 Flexure endurance Not applicable 601 Smoke density Subject to agreement between customer and supplier 602 Toxicity Subject to agreement between customer and supplier 603 Resistance to wet arc tracking Not applicable 604 Resistance t
45、o dry arc propagation Not applicable 605 Wet short circuit test Not applicable 701 Strippability and adherence of insulation to the conductor Not applicable 702 Screen pushback capability Applicable 703 Permanence of manufacturers marking Applicable 704 Flexibility Not applicable 705 Contrast measur
46、ement Applicable Laser marking K 50 % 706 Laser markability Not applicable 6 Quality assurance See EN 9133. BS EN 4612-008:2011EN 4612-008:2011 (E) 11 7 Designation EXAMPLE Description block CABLE, ELECTRICAL Identity block EN4612-008A010P Number of this standard Code letter for number of cores (see
47、 EN 4612-002) Code for nominal section (see Table 1) Code letter for colour coding of cores (see EN 4612-002) 8 Identification and marking See EN 4612-002. 9 Packaging, labelling and delivery lengths See EN 2235. 10 Technical specification See EN 2235. BS EN 4612-008:2011EN 4612-008:2011 (E) 12 Anne
48、x A (normative) Formulae for calculating braid details A.1 The filling factor Kfis given by the following formula 2122212+=LDDmndKwfwhere D is the mean diameter braid (i.e. diameter under braid + 2dr); dw is the effective width of one end; dr is the effective radial depth of one end; L is the lay le
49、ngth; m is the total number of spindles; n is the total number of ends per spindle. A.2 Lay factor The lay factor (KL) is given by: 2221LDKL+= where D and L are defined in A.1 above. A.3 Coverage The percentage coverage is given by the formula: 100 (2KL KL2) This page deliberately left blankBSI is the independent national body responsible for preparing Britis
