1、BRITISH STANDARDBS EN 3375-004:2007Aerospace series Cable, electrical, for digital data transmission Part 004: Double braid 77 Ohms Type WJ Product standardThe European Standard EN 3375-004:2007 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g5
2、4g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3375-004:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2007 BSI 2007ISBN 978
3、0 580 60338 9National forewordThis British Standard is the UK implementation of EN 3375-004:2007.The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Panel ACE/6/-/2, Aerospace Cables.A list of organizations r
4、epresented on this committee can be obtained on request to its secretary.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 cannot confer immunity from legal obligations. Amendm
5、ents issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 3375-004November 2007ICS 49.060English VersionAerospace series - Cable, electrical, for digital data transmission- Part 004: Double braid - 77 Ohms - Type WJ - ProductstandardSrie arospatiale - Cbles
6、 lectriques pour transmissionde donnes numriques - Partie 004: Double tresse - 77Ohms - Type WJ - Norme de produitLuft- und Raumfahrt - Elektrische Leitungen frDigitaldatenbertragungen - Teil 004: Doppelt geschirmt -77 Ohm - Type WJ - ProduktnormThis European Standard was approved by CEN on 23 May 2
7、007.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 nationalstandards may be obtained on
8、 application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Cent
9、re has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
10、Portugal,Romania, 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 2007 CEN All rights of exploitation in any form and by any mean
11、s reservedworldwide for CEN national Members.Ref. No. EN 3375-004:2007: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Required characteristics.5 4.1 Dimensions and mass.5 4.2 General characteristics .6 4.3 Electrical characteristics 6 5 Tests6 6 Quality a
12、ssurance9 7 Identification and marking (according to EN 3375-002 and TR 6058) 10 7.1 Designation 10 7.2 Short designation 10 7.3 Marking .10 7.4 Colour of the marking on the jacket 10 7.5 Colour of components 10 8 Packaging .11 9 Technical specification .11 EN 3375-004:20073 Foreword This document (
13、EN 3375-004:2007) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Officia
14、l 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 identical text or by endorsement, at the latest by May 2008, and conflicting national standards shall be withdrawn at the
15、latest by May 2008. 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 to the CEN/CENELEC Internal Regulations, the national st
16、andards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
17、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 3375-004:20074 1 Scope This standard specifies the required characteristics of double braid, 77 Ohms, size 24 electrical cable type WJ, intended for digital data transmissions. General characteristics are g
18、iven in 4.2. Main electrical characteristics are given in 4.3. It shall be used together with EN 3375-001 and EN 3375-002. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undat
19、ed references, the latest edition of the referenced document (including any amendments) applies. EN 2083, Aerospace series Copper and copper alloy conductors for electrical cables Product standard. EN 2084, Aerospace series Cables, electric, single-core, general purpose, with conductors in copper or
20、 copper alloy Technical specification. EN 2235, Aerospace series Single and multicore electrical cables, screened and jacketed. EN 3375-001, Aerospace series Cable, electrical, for digital data transmission Part 001: Technical specification. EN 3375-002, Aerospace series Cable, electrical, for digit
21、al data transmission Part 002: General. 1)EN 3475-100*, Aerospace series Cables, electrical, aircraft use Test methods Part 100: General. EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts.TR 6058, Aerospace series Cable code identification list
22、. 2)3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 3475-100 apply. *All parts quoted in Table 2. 1) Published as ASD Prestandard at the date of publication of this standard. 2) Published as ASD Technical Report at the date of publication of this stan
23、dard. EN 3375-004:20075 4 Required characteristics 4.1 Dimensions and mass See Figure 1 and Table 1. ENWJ24xxx05123456Optional tapeKey c Two conductors size 24, according to EN 2083 C002 (AWG 24). d Insulation of elements: Fluorocarbon (colour: see 7.5) e Two fillers f Braid screen, tin (B) or silve
24、r (C) plated copper (strand = 0,10 mm) g Braid screen, tin (B) or silver (C) plated copper (strand = 0,10 mm) h Outer sheath: Fluorocarbon (colour: see 7.5) Figure 1 Table 1 Braid screen Core (EN 2083) Insulation f g Outer sheath Mass diameter diameter diameter diameter Composition min. max. max. ma
25、x. min. max. max. N mm mm mm mm mm g/m19 0,12 0,55 0,62 1,30 3,00 3,50 3,40 3,90 37 Optional tapeEN 3375-004:20076 4.2 General characteristics Operating temperature: Silver plated copper braid : 65 C to 200 C Tin plated copper braid . : 65 C to 150 C Minimum bend radius : R = 26 mm UV laser markable
26、 Twisting pitch ranging between 8 and 16 times the external diameter of the dual-conductor assembly. 4.3 Electrical characteristics Impedance : (77 7) at 1 MHz Capacitance (70 pF/m nominal) : 78 pF/m max. Attenuation maximum . : 3,6 dB/100 m at 1 MHz For information: maximum voltage rating 600 V AC
27、Transfer impedance (Zt maximum in m/m): direct current . : 15 1 MHz : 5 10 MHz . : 5 30 MHz . : 10 100 MHz : N.A. 5 Tests According to EN 3375-001 and EN 3475-100. See Table 2. EN 3375-004:20077 Table 2 Carried out on EN 3475- Designation of the test Component aCable 201 Visual examination Applicabl
28、e Applicable 202 Mass Not applicable Applicable, see Table 1. 203 Dimensions Applicable Applicable, see Table 1. 301 Ohmic resistance per unit length Not applicable Applicable 109 /km maximum 302 Voltage proof test Not applicable Applicable Elements: 1,5 kV AC Jacket: Dry: 1,0 kV AC or Dry impulse:
29、1,5 kV AC or Immersion: 500 V AC 303 Insulation resistance Not applicable Applicable 1 500 M km at 20 C 304 Surface resistance Applicable Applicable 1 250 M.mm 305 Overload resistance Not applicable Not applicable 306 Continuity of conductors Applicable Applicable 307 Corona extinction voltage Not a
30、pplicable Not applicable 401 Accelerated ageing Not applicable Applicable T = maximum operating temperature 30 C - 168 h Mandrel 50 mm Load = 0,7 daN 402 Shrinkage and delamination Applicable T C = 200 C 0,8 mm max. Applicable At maximum operating temperature 2 mm max. 403 Delamination and blocking
31、Not applicable Applicable T C = 200 C Mandrel 50 mm 404 Thermal shock Applicable T C = 200 C 0,8 mm max. Applicable At maximum operating temperature 2 mm max. 405 Bending at ambient temperature Not applicable Applicable Load = 0,7 daN Mandrel 50 mm 406 Cold bend test Not applicable Applicable Load =
32、 0,7 daN Mandrel 50 mm 407 Flammability Not applicable Applicable Load = 0,7 daN continued EN 3375-004:20078 Table 2 (continued) Carried out on EN 3475- Designation of the test Component aCable 408 Fire resistance Not applicable Not applicable 409 Air-excluded ageing Not applicable Not applicable 41
33、0 Thermal endurance Not applicable Not applicable 411 Resistance to fluids Not applicable Applicable 412 Humidity resistance Not applicable Not applicable 413 Wrap back test Not applicable Not applicable 414 Differential scanning calorimeter (DSC test) Not applicable Not applicable 415 Rapid change
34、of temperature Not applicable Not applicable 416 Thermal stability Not applicable Not applicable 417 Fire resistance inside harness Not applicable Not applicable 418 Thermal endurance for conductors Not applicable Not applicable 501 Dynamic cut-through Not applicable Applicable at 23 C: 1 daN at max
35、imum operating temperature: 0,5 daN 502 Notch propagation Not applicable Applicable Notch = 0,05 mm Mandrel 50 mm 503 Scrape abrasion Not applicable Applicable F = 1 daN 504 Torsion Not applicable Not applicable 505 Tensile test on conductors and strands Applicable Not applicable 506 Plating continu
36、ity Applicable Applicable 507 Adherence of plating Applicable Applicable 508 Plating thickness Applicable Applicable 509 Solderability Applicable Maximum wetting time 5 s Applicable Maximum wetting time 5 s 510 Tensile strength and elongation of extruded insulation, sheath and jacket material Not ap
37、plicable Not applicable 511 Cable-to-cable abrasion Not applicable Not applicable 512 Flexure endurance Not applicable Not applicable 513 Deformation resistance (Installation with plastic cable ties) Not applicable Not applicable 514 Porosity of copper cladding on aluminium strands Not applicable No
38、t applicable continued EN 3375-004:20079 Table 2 (concluded) Carried out on EN 3475- Designation of the test Component a Cable 601 Smoke density Not applicable Applicable 602 Toxicity Not applicable Applicable 603 Resistance to wet arc tracking Not applicable Not applicable 604 Resistance to dry arc
39、 propagation Not applicable Not applicable 605 Wet short circuit test Not applicable Not applicable 701 Strippability and adherence of insulation to the conductor Applicable 0,25 daN Applicable 702 Screen pushback capability Not applicable Applicable 703 Permanence of manufacturers marking Not appli
40、cable Applicable 704 Flexibility Not applicable Not applicable 705 Contrast measurement Not applicable Applicable K 50 % 706 Laser markability Not applicable Applicable 801 Capacitance per unit length Not applicable Mutual capacitance See 4.3. 802 Capacitance unbalance Not applicable Applicable 5 %
41、803 Capacitance variation Not applicable Not applicable 804 Velocity of propagation Not applicable Not applicable 805 Characteristic impedance Not applicable Applicable Differential impedance See 4.3. 806 Attenuation Not applicable Applicable See 4.3. 807 Transfer impedance Not applicable Applicable
42、 See 4.3. 808 Cross-talk Not applicable Not applicable 809 Resistance unbalance (DC) Not applicable Not applicable 810 Structural return loss Not applicable Not applicable 811 Unbalance attenuation Not applicable Not applicable aSamples from finished cable. 6 Quality assurance See EN 9133. EN 3375-0
43、04:200710 7 Identification and marking (according to EN 3375-002 and TR 6058) 7.1 Designation EXAMPLE Description block ELECTRICAL CABLE Identity block EN3375-004C01 Reference of this standard Nature of braid (B: tin plated copper or C: silver plated copper) Jacket marking code (see Table 3) 7.2 Sho
44、rt designation See Table 3. Table 3 Braid code Jacket code Short designation B None WJB 24 B 01 WJB R 24 B 02 WJB B 24 C None WJ 24 C 01 WJ R 24 C 02 WJ B 24 7.3 Marking EXAMPLES for EN3375-004 C the marking is EN WJ 24 FRA 05 for EN3375-004 B 01 the marking is EN WJB R 24 FRF 05 7.4 Colour of the m
45、arking on the jacket Code “none“: Green; Code 01: Red (main line); Code 02: Blue (branch line). 7.5 Colour of components Cores: 1 white + 1 light blue; Jacket: white. EN 3375-004:200711 8 Packaging See EN 3375-001. 9 Technical specification See EN 2084. See EN 2235. See EN 3375-001. EN 3375-004:2007
46、BS EN 3375-004:2007BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBriti
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