ASD-STAN PREN 3375-007-2015 Aerospace series Cable electrical for digital data transmission Part 007 Double braid C 77 ohms C Type WW Product standard (Edition P 2).pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 3375-007 Edition P 2 April 2015 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: Supersedes edition P 1 of No

2、vember 2005 and will supersede EN 3375-007:2006 Descriptors: ENGLISH VERSION Aerospace series Cable, electrical, for digital data transmission Part 007: Double braid 77 ohms Type WW Product standard Srie arospatiale Cbles lectriques pour transmission de donnes numriques Partie 007 : Double tresse 77

3、 ohms Type WW Norme de produit Luft- und Raumfahrt Elektrische Leitungen fr Digitaldatenbertragungen Teil 007: Doppelt geschirmt 77 Ohm Type WW Produktnorm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of

4、Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has 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 t

5、hat interchangeability is affected, physically or functionally, without re-identification of the standard. 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

6、and transformation to full European Standard (EN). The CEN national members have then to implement 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 1st April 2015 Comments s

7、hould be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2015 by ASD-STAN prEN 3375-007:2015 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and definitions . 3 4 Required characteristics . 4 5 Tests 5 6 Quality assurance 8 7 Ide

8、ntification and marking (according to EN 3375-002 and TR 6058) 8 8 Packaging . 9 9 Technical specification . 9 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 define

9、d in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 3375-007:2015 (E) 3 1 Scope This standard specifies the required characteristics of double braid, 77 ohms, size 26 electrical cable type WW, intended for digital data transmissions. Main electrical chara

10、cteristics are given in 4.3. It shall be used together with EN 3375-001 and EN 3375-002. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. F

11、or undated references, the latest edition of the referenced document (including any amendments) applies. EN 2083, Aerospace series Copper or copper alloy conductors for electrical cables Product standard EN 2084, Aerospace series Cables, electrical, general purpose, with conductors in copper or copp

12、er alloy Technical specification EN 2235, Aerospace series Single and multicore electrical cables, screened and jacketed Technical specification EN 3375-001, Aerospace series Cable, electrical, for digital data transmission Part 001: Technical specification EN 3375-002, Aerospace series Cable, elect

13、rical, for digital data transmission Part 002: General 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 and ide

14、ntification list 1) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 3475-100 apply. * And all parts quoted in this standard. 1) Published as ASD-STAN Technical Report at the date of publication of this standard. http:/www.asd-stan.org/ prEN 3375-007:2

15、015 (E) 4 4 Required characteristics 4.1 Dimensions and mass See Figure 1 and Table 1. 63541ENWW2Key Two cores size 26, according to EN 2083 C001 (AWG 26) Insulation of elements: Fluorocarbon (colour: see 7.5) Two fillers Braid screen, silver plated copper (strand 0,08 mm) Braid screen, silver plate

16、d copper (strand 0,08 mm) Outer sheath fluorocarbon (colour: see 7.5) Figure 1 Table 1 Core (ASD EN 2083) Insulation Braid screen Outer sheath Mass Composition diameter diameter diameter diameter min. max. max. max. max. max. max. N mm mm mm mm mm g/m 19 0,10 0,45 0,53 0,85 2,00 2,40 2,80 3,00 21 4.

17、2 General characteristics (according to EN 2235 and EN 3475-100) Operating temperature : 65 C to 200 C Bend radius recommended minimum bend radius : R 20 mm Twisting pitch ranging between 8 and 16 times the external diameter of the dual-conductor assembly. 26prEN 3375-007:2015 (E) 5 4.3 Electrical c

18、haracteristics Impedance . : (77 7) at 1 MHz Capacitance . : 75 pF/m max. Attenuation maximum . : 4,1 dB/100 m at 1 MHz For information: maximum voltage rating 250 V AC Transfer impedance (Zt/m/m): direct current . : 30 1 MHz . : 15 10 MHz . : 15 30 MHz . : 15 100 MHz : N.A. 5 Tests According to EN

19、3375-001 and EN 3475-100. See Table 2. Table 2 (1 of 4) EN 3475- Designation of the test Carried out on Component a Cable 201 Visual examination Applicable Applicable 202 Mass Not applicable Applicable see Table 1. 203 Dimensions Applicable Applicable see Table 1. 301 Ohmic resistance per unit lengt

20、h Not applicable Applicable 153 /km maximum 302 Voltage proof test Not applicable Applicable Elements: 1 500 V AC Jacket: Dry: 1 000 V AC Immersion: 500 V AC 303 Insulation resistance Not applicable Applicable 1 500 M km at 20 C prEN 3375-007:2015 (E) 6 Table 2 (2 of 4) EN 3475- Designation of the t

21、est Carried out on Component a Cable 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 applicable Not applicable 401 Accelerated ageing Not applicable Appl

22、icable T operating Temperature 230 C 168 h Mandrel 50 mm Load 0,25 daN 402 Shrinkage and delamination Applicable T C 200 C 0,8 mm max. Applicable T C 200 C 2 mm max. 403 Delamination and blocking Not applicable Applicable T C 200 C Mandrel 50 mm 404 Thermal shock Applicable T C 200 C 0,8 mm max. App

23、licable T C 200 C 2 mm max. 405 Bending at ambient temperature Not applicable Applicable Load 1 daN Mandrel 50 mm 406 Cold bend test Not applicable Applicable Load 1 daN Mandrel 50 mm 407 Flammability Not applicable Applicable Load 1 daN 408 Fire resistance Not applicable Not applicable 409 Air-excl

24、uded ageing Not applicable Not applicable 410 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

25、 applicable Not applicable 415 Rapid change of temperature Not applicable Not applicable 416 Thermal stability Not applicable Not applicable 417 Fire resistance of cables confined inside a harness Not applicable Not applicable 418 Thermal endurance for conductors Not applicable Not applicable prEN 3

26、375-007:2015 (E) 7 Table 2 (3 of 4) EN 3475- Designation of the test Carried out on Component a Cable 501 Dynamic cut-through Not applicable Applicable at 23 C: 1 daN at operating temperature: 0,5 daN 502 Notch propagation Not applicable Applicable Notch 0,05 mm Mandrel 50 mm 503 Scrape abrasion Not

27、 applicable Applicable F 1 daN 504 Torsion Not applicable Not applicable 505 Tensile test on conductors and strands Applicable Not applicable 506 Plating continuity Applicable Applicable 507 Adherence of plating Applicable Applicable 508 Plating thickness Applicable Applicable 509 Solderability Appl

28、icable Maximum wetting time: 5 s Applicable Maximum wetting time: 5 s 510 Tensile strength and elongation of extruded insulation, sheath and jacket material Not applicable Not applicable 511 Cable-to-cable abrasion Not applicable Not applicable 512 Flexure endurance Not applicable Not applicable 513

29、 Deformation resistance (Installation with plastic cable ties) Not applicable Not applicable 514 Porosity of copper cladding on aluminium strands Not applicable Not applicable 601 Smoke density Applicable Applicable 602 Toxicity Applicable Applicable 603 Resistance to wet arc tracking Not applicable

30、 Not applicable 604 Resistance to dry arc 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 Perm

31、anence of manufacturers marking Not applicable Applicable 704 Flexibility Not applicable Not applicable 705 Contrast measurement Not applicable Not applicable 706 Laser markability Not applicable Not applicable prEN 3375-007:2015 (E) 8 Table 2 (4 of 4) EN 3475- Designation of the test Carried out on

32、 Component a Cable 801 Capacitance per unit length Not applicable Mutual capacitance See 4.3. 802 Capacitance unbalance Not applicable Applicable 5 % 803 Capacitance variation Not applicable Not applicable 804 Velocity of propagation Not applicable Not applicable 805 Characteristic impedance Not app

33、licable Applicable Differential impedance See 4.3. 806 Attenuation Not applicable Applicable See 4.3. 807 Transfer impedance Not applicable Applicable See 4.3. 808 Cross-talk Not applicable Not applicable 809 Resistance unbalance (DC) Not applicable Not applicable 810 Structural return loss Not appl

34、icable Not applicable 811 Unbalance attenuation Not applicable Not applicable a Samples from finished cable. 6 Quality assurance See EN 9133. 7 Identification and marking (according to EN 3375-002 and TR 6058) 7.1 Designation EXAMPLE Description block CABLE, ELECTRICAL Identity block EN3375-007C01 R

35、eference of this standard Nature of braid (C: silver plated copper) Jacket marking code (see Table 3) prEN 3375-007:2015 (E) 9 7.2 Short designation See Table 3. Table 3 Braid code Jacket code Short designation C None WW 26 C 01 WW R 26 C 02 WW B 26 7.3 Marking EXAMPLE EN WW R 26 FRF 05 7.4 Colour of the marking on the jacket Code “none“: Green or Black; Code 01: Red (main line); Code 02: Blue (branch line). 7.5 Colour of components Cores: 1 white 1 light blue; Jacket: white. 8 Packaging See EN 3375-001. 9 Technical specification See EN 2084. See EN 2235. See EN 3375-001.