1、ASD STANDARD NORME ASD ASD NORM prEN 3375-008 Edition P 1 January 2008 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Avenue de Tervuren, 270 - B-1150 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 763 3565 - www.asd-stan.orgICS: Descriptors: Aerospace indus
2、try, aircraft equipment, terminal lugs, splices ENGLISH VERSION Aerospace series Cable, electrical, for digital data transmission Part 008: Single braid Star Quad 100 Ohms Type KD Product standard Srie arospatiale Cbles lectriques pour transmission de donnes numriques Partie 008 : Simple tresse Quar
3、te en toile 100 Ohms Type KD Norme de produit Luft- und Raumfahrt Elektrische Leitungen fr Digitaldatenbertragungen Teil 008: Einfach geschirmt Quad 100 Ohms Typ KD Produktnorm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Indus
4、tries Association of 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 c
5、hanged to an extent that 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 Standardizat
6、ion) for formal vote 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 31 J
7、anuary 2008 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2008 by ASD-STAN prEN 3375-008:20082 Contents Page Foreword2 1 Scope 3 2 Normative references 3 3 Terms and definitions .3 4 Required characteristics.3 4.1 Configuration, dimen
8、sions, tolerances and mass .3 4.2 Material .4 4.3 General characteristics .5 5 Tests5 6 Quality assurance. 10 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 on cable. 11 7.4 Colour of the marking on the jacket . 11 7
9、.5 Colour of components . 11 8 Packaging 11 9 Technical specification 11 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 defined in ASD-STANs General Process Manual,
10、 this standard has received approval for Publication. prEN 3375-008:20083 1 Scope This standard specifies the dimensions, tolerances, required characteristics and the mass of an AWG 24 shielded quad cable, type KD, intended for high speed (100 Mbit/s) full duplex Ethernet networks. Linked to this pa
11、rticular application, the operating temperatures of the cable are between 65 C and 125 C. This cable is laser markable, this marking satisfies the requirements of EN 3838. The characteristics impedance must be (100 15) . 2 Normative references The following referenced documents are indispensable for
12、 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 3375-001, Aerospace series Cable, electrical, for digital data transmission Part 001: Technical specif
13、ication. 1)EN 3375-002, Aerospace series Cable, electrical, for digital data transmission Part 002: General. 1)EN 3475-100*, Aerospace series Cables, electrical, aircraft use Test methods Part 100: General. EN 3838, Aerospace series Requirements and tests on user-applied markings on aircraft electri
14、cal cables. 1)EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts. TR 6058, Aerospace series Cable code identification list. 2)3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 3475-100 apply. 4 Requ
15、ired characteristics 4.1 Configuration, dimensions, tolerances and mass The configuration, dimensions and tolerances shall be in accordance with Figure 1 and Table 1. Mass: 41 kg/km. Dimensions are in millimetres. * All parts quoted in Table 3. 1) Published as ASD Prestandard at the date of publicat
16、ion of this standard. 2) Published as ASD Technical Report at the date of publication of this standard. prEN 3375-008:20084 NOTE No. of elements in accordance with Table 2. Figure 1 Configuration, dimensions and tolerances Table 1 Dimensions, tolerances and general characteristics Stranded conductor
17、 ( A) 0,598 mm 0,656 mm a Insulation diameter (single wire) 1,35 mm 1,52 mm aBraid, shield Strand diameter : 0,10 mm Outer diameter of cable ( B) 1 daN At operating temperature: 0,5 daN continued prEN 3375-008:20087 Table 3 (continued) Carried out on / Requirement EN 3475- Test Component (samples fr
18、om finished cable) Cable 502 Notch propagation Not applicable Applicable Notch depth = 0,05 mm Mandrel = 60 mm 503 Scrape abrasion Not applicable Applicable at 23 C F = 1 daN 504 Torsion Not applicable Not applicable 505 Tensile test on conductors and strands Applicable TS 45 N and A % 10 Not applic
19、able 506 Plating continuity Applicable Applicable 507 Adherence of plating Applicable Applicable 508 Plating thickness Applicable aApplicablea509 Solderability Not applicable Not applicable 510 Tensile strength and elongation of extruded insulation, sheath and jacket material Not applicable Not appl
20、icable 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 Not applicable 601
21、Smoke density Not applicable Applicable T = 4 min ; Dm = 200 602 Toxicity Not applicable Applicable T = 4 min 603 Resistance to wet arc tracking Not applicable Not applicable 604 Resistance to dry arc propagation Not applicable Not applicable 605 Wet short circuit test Not applicable Not applicable
22、701 Strippability and adherence of insulation to the conductor Applicable 0,25 daN (See aof Table 1)Applicable 702 Screen pushback capability Not applicable Applicable continued prEN 3375-008:20088 Table 3 (concluded) Carried out on / Requirement EN 3475- Test Component (samples from finished cable)
23、 Cable 703 Permanence of manufacturers marking Not applicable Applicable 704 Flexibility Not applicable Not applicable 705 Contrast measurement Not applicable K 50 % 706 Laser markability Not applicable Applicable 801 Capacitance per unit length Not applicable Applicable At 1 kHz 60 pF/m max. 802 Ca
24、pacitance unbalance Not applicable Pair to ground: Applicable 23 C 330 pF max. per 100 m 803 Capacitance variation Not applicable Not applicable 804 Velocity of propagation Not applicable Applicable (C = 3 105km/s) 0,70 C at 31,25 MHz 805 Characteristic impedance Not applicable Applicable (100 15) f
25、rom 1 MHz to 100 MHz 806 Attenuation Not applicable Applicable Finished cable See Table 4. 807 Transfer impedance Not applicable Applicable See Table 6. 808 Cross-talk Not applicable Applicable See Table 5. 809 Resistance unbalance Not applicable Applicable 1,5 % 810 Structural Return Loss Not appli
26、cable Applicable (1 f 10) MHz : 20 + 5 log (f) dB (10 f 20) MHz : 25 dB (20 f 100) MHz : 25 7 log (f/20) dB 811 Unbalance Attenuation Not applicable Applicable LCL (min): (1 f 100) MHz : 30 10 log (f/100) dBbLCTL (min): from 0,1 MHz to 1 MHz : 40dB from 1 MHz to 10 MHz : 40 10 log (f) dBfrom 10 MHz
27、to 100 MHz : 30 dB aPlating thickness shall be at least 1,0 m for silver. bCalculations that result in LCL values greater than 40 dB can be revert to a requirement of 40 dB minimum. prEN 3375-008:20089 Table 4 Maximum attenuation of the cable at 25 C Frequency MHz Maximum attenuation of the cable dB
28、/100 m 1,00 2,1 4,00 4,3 10,00 6,6 16,00 8,7 20,00 9,7 31,25 12,5 62,50 18 100,00 23 The cable attenuation shall be also verified at temperatures 55 C, 70 C, 125 C and shall meet the requirements of the table above after adjusting for temperature. The maximum attenuation must be adjusted using a fac
29、tor of 0,2 % in dB per C above 25 C (only for temperature greater than 25 C). For example, at 31,25 MHz the maximum attenuation at 125 C shall be: 12,5 + 0,2 % (125 25) 12,5 = 15 dB. Table 5 Minimum near end cross-talk loss of the cable and contacts Frequency MHz Next cable dB/100 m 1,00 68 4,00 59
30、10,00 53 16,00 50 20,00 48 31,25 46 62,50 41 100,00 38 prEN 3375-008:200810 Table 6 Transfer impedance Frequency MHz Maximum transfer impedance (Zt max.) m/m DC 20 0,1 20 1,0 20 5,0 20 10,0 30 20,0 45 50,0 100 100,0 400 6 Quality assurance See EN 9133. 7 Identification and marking (according to EN 3
31、375-002 and TR 6058) 7.1 Designation EXAMPLE Description block ELECTRICAL CABLE Identity block EN3375-008C Reference of this standard Nature of braid (C: silver plated copper) NOTE If necessary, the code I9005 may be placed between the description block and the identity block. 7.2 Short designation
32、According to TR 6058: KD24 prEN 3375-008:2008 11 7.3 Marking on cable In accordance with the design of the cable, there is only one way to use it for installation. The cable shall be marked with letter “A-B“. END ABlueYellowGreenRedEN KD 24 FRA03 A - B EN KD 24 FRA03 (300 50) mm60 mm max. (150 50) mmFigure 2 Marking on cable 7.4 Colour of the marking on the jacket Green (preferential) or black. 7.5 Colour of components According to Table 1. 8 Packaging See EN 3375-001. 9 Technical specification See EN 3375-001.
