1、BRITISH STANDARD AEROSPACE SERIES BS EN 2714-012:2005 Cables, electrical, single and multicore for general purpose Operating temperatures between p55 C and 260 C Part 012: DM family, screened (braided) and jacketed, UV laser printable Product standard The European Standard EN 2714-012:2005 has the s
2、tatus of a British Standard ICS 49.060 BS EN 2714-012:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 10 February 2006 BSI 10 February 2006 ISBN 0 580 47808 4 National foreword This British Standard is the official English language versi
3、on of EN 2714-012:2005. 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 responsibility to: aid enquirers to understand the text; present to the resp
4、onsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on re
5、quest to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI
6、 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 with a British Standard does not of itself confer immunity from legal obligations. Summary of p
7、ages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUR
8、OPENNE EUROPISCHE NORM EN 2714-012 October 2005 ICS 49.060 English Version Aerospace series - Cables, electrical, single and multicore for general purpose - Operating temperatures between - 55 C and 260 C - Part 012: DM family, screened (braided) and jacketed, UV laser printable - Product standard S
9、rie arospatiale - Cbles, lectriques, mono et multiconducteurs dusage gnral - Tempratures de fonctionnement comprises entre - 55 C et 260 C - Partie 012 : Famille DM, blinds (tresss) et gains, marquable au laser UV - Norme de produit Luft- und Raumfahrt - Leitungen, elektrisch, ein- und mehradrig, fr
10、 allgemeine Verwendung - Betriebstemperaturen zwischen - 55 C und 260 C - Teil 012: DM-Familie, geschirmt (Umflechtung) und ummantelt UV Laser bedruckbar - Produktnorm This European Standard was approved by CEN on 12 September 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regul
11、ations 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 Central Secretariat or to any CEN member. This Eu
12、ropean 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 Central Secretariat has the same status as the official versions. CEN members are the na
13、tional standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. E
14、UROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2714-012:2005: EEN 2714
15、-012:2005 2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Terms, definitions and symbols 4 4 Materials and construction.5 5 Required characteristics 7 6 Quality assurance .9 7 Designation .9 8 Identification and marking9 9 Packaging, labelling and delivery lengths 9 10 Technical sp
16、ecification.9 EN 2714-012:2005 3 Foreword This European Standard (EN 2714-012:2005) 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 recei
17、ved the 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 April 20
18、06, and conflicting national standards shall be withdrawn at the latest by April 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.
19、 According to 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, L
20、ithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 4 1 Scope This standard specifies the characteristics of UV laser printable DM family, 5 to 7 multicore screened (braided) and jacketed electrical lightweight ca
21、bles for use in the on-board electrical systems of aircraft, at operating temperatures between 55 C and 260 C. Nevertheless, if needed, 65 C is also acceptable as shown by cold test. It shall also be possible to mark these cables by qualified compatible marking. These markings shall satisfy the requ
22、irements of EN 3838. 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 document (including any amendments) applies. EN 22
23、35, Aerospace series Single and multicore electrical cables, screened and jacketed Technical specification. 1)EN 2267-007, Aerospace series Cables, electrical, for general purpose Operating temperatures between 55 C and 260 C Part 007: DMA family, single ink-jet printable and multicore assembly Prod
24、uct standard. 1)EN 2714-002, Aerospace series Cables, electrical, single and multicore for general purpose Operating temperatures between 55 C and 260 C Part 002: Screened and jacketed General. EN 3475-100*, Aerospace series Cables, electrical, aircraft use Test methods Part 100: General. EN 3838, A
25、erospace series Requirements and tests on user-applied markings on aircraft electrical cables. 1) EN 4434, Aerospace series Copper or copper alloy lightweight conductors for electrical cables Product standard (Normal and tight tolerances). EN 9133, Aerospace series Quality management systems Qualifi
26、cation 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. * And all its parts quoted in Table 2. 1) Published as AECMA Prestandard at the date of publication of this standard. EN 27
27、14-012:20055 4 Materials and construction 4.1 Materials These cables shall consist of the following: cores according to EN 2267-007; number of cores 5 to 7. 5 to 7-core cables shall be twisted together according to EN 2235. Central filler cores shall be permitted for 5 and 6 core cables. Tape: layer
28、 of polyimide with wall thickness (nominal value) of 25 m; direction of winding immaterial - overlap 15 % minimum Screen: nickel-plated copper stranded braid; for dimensions of strands, see Table 1; material according to EN 4434, tests according to EN 3475-100; construction according to EN 2235. Out
29、er jacket: layer of polyimide with total wall thickness (nominal value) of 30 m, coated on both sides with a layer 2,5 m thick of fluorocarbon - direction of winding immaterial - overlap 25 % min; second layer of polytetrafluoroethylene 0,076 mm thick running in opposite direction to first layer wit
30、h 51 % min overlap. 4.2 Construction See EN 4434 and Table 1. EN 2714-012:20056 Table 1 Number of cores Code for nominal section Nominal section AWG aLinear resistance at 20 C Screen strands nominal diameter External diameter Mass mm 2 /km mm mm kg/km max. max. max. 001 0,15 26 165,0 002 0,25 24 117
31、,0 004 0,4 22 61,7 006 0,6 20 34,1 010 1 18 21,7 0,12 5,90 87,70 012 1,2 16 14,9 0,12 7,10 119,70 020 2 14 11,2 0,12 7,70 149,40 030 3 12 6,99 0,15 9,20 227,80 5 051 5 10 4,22 001 0,15 26 165,00 002 0,25 24 117,00 004 0,4 22 61,70 006 0,6 20 34,10 010 1 18 21,70 012 1,2 16 14,90 020 2 14 11,20 030 3
32、 12 6,99 6 051 5 10 4,22 001 0,15 26 165,00 002 0,25 24 117,00 004 0,4 22 61,70 006 0,6 20 34,10 010 1 18 21,70 012 1,2 16 14,90 020 2 14 11,20 030 3 12 6,99 7051 5 10 4,22 NOTE Table 1 shall be completed on request. aAWG = Closest American Wire Gage.EN 2714-012:20057 4.3 Colour coding of cores and
33、jacket See EN 2714-002. 5 Required characteristics According to EN 2235 and EN 3475-100. See Table 2. Table 2 EN 3475- Test Details 201 Visual examination Applicable 202 Mass Applicable; see Table 1. 203 Dimensions Applicable; see Table 1. 301 Ohmic resistance per unit length Applicable; see Table 1
34、. 302 Voltage proof test Applicable 303 Insulation resistance Applicable 304 Surface resistance Applicable 305 Overload resistance Not applicable 401 Accelerated ageing Applicable Temperature (310 5) C 402 Shrinkage and delamination Applicable Temperature (290 5) C Maximum shrinkage at each end of c
35、able: jacket: 2 mm on AWG 26 to 18 3 mm on AWG 16 to 10 core: according to EN 2267-007 403 Delamination and blocking Applicable Temperature (310 5) C 404 Thermal shock Applicable but ( 65 2) C instead of ( 55 2) C Temperature (260 5) C Maximum shrinkage at each end of cable: jacket: 2 mm on AWG 26 t
36、o 18 3 mm on AWG 16 to 10 core: according to EN 2267-007 405 Bending at ambient temperature Applicable 406 Cold bend test Applicable but ( 65 2) C continued EN 2714-012:20058 Table 2 (concluded) EN 3475- Test Details 407 Flammability Applicable Extinguishing time: 3 s max. 408 Fire resistance Not ap
37、plicable 409 Air-excluded ageing Not applicable 410 Thermal endurance Not applicable 411 Resistance to fluids Applicable 501 Dynamic cut-through Not applicable 502 Notch propagation Applicable Notch depth: 40 m 503 Scrape abrasion Applicable Test force on needle for cables 0,15 mm 2to 0,60 mm 2= 8 N
38、 1,00 mm 2to 1,20 mm 2= 10 N 2,00 mm 2to 5,00 mm 2= 12 N 504 Torsion Not applicable 505 Tensile test on conductors and strands Applicable 506 Plating continuity Applicable 507 Adherence of plating Applicable 508 Plating thickness Applicable 509 Solderability Not applicable 601 Smoke density Applicab
39、le 602 Toxicity Applicable 603 Resistance to wet arc tracking Not applicable 604 Resistance to dry arc propagation Not applicable 605 Wet short circuit test Not applicable 701 Strippability and adherence of insulation to the conductor Applicable 702 Screen pushback capability Not applicable 703 Perm
40、anence of manufacturers marking Applicable 704 Flexibility Not applicable 705 Contrast measurement Applicable K 50 % 706 Laser markability Applicable UV laser EN 2714-012:20059 6 Quality assurance See EN 9133. 7 Designation EXAMPLE Description block CABLE, ELECTRICAL Identity block EN2714-012E010F N
41、umber of this standard Code letter for number of cores (see EN 2714-002, Table 1) Code for nominal section (see Table 1) Code letter for colour coding of cores and jacket (see EN 2714-002) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 8 Ident
42、ification and marking See EN 2714-002. 9 Packaging, labelling and delivery lengths See EN 2235. 10 Technical specification See EN 2235. EN 2714-012:2005BS EN 2714-012:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for
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