ASD-STAN PREN 4641-200-2017 Aerospace series Cables optical 125 diameter cladding Part 200 Semi-loose structure 9 125 GI fibre nominal 0 9 mm outside diameter Product standard (Edi.pdf

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1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM ASD-STAN prEN 4641-200 Edition P 1 May 2017 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: Descriptors: ENGLISH

2、VERSION Aerospace series Cables, optical, 125 m diameter cladding Part 200: Semi-loose structure 9/125 m GI fibre nominal 0,9 mm outside diameter Product standard Luft- und Raumfahrt Lichtwellenleiterkabel, Mantelauendurchmesser 125 m Teil 200: Kompaktader, 9/125 m GI-Faser, Kabelauendurchmesser 0,9

3、 mm Produktnorm Srie arospatiale Cbles, optiques, diamtre extrieur de la gaine optique 125 m Partie 200 : Cble structure semi-libre, fibre gradient dindice 9/125 m, diamtre extrieur 0,9 mm Norme de produit This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (Th

4、e AeroSpace and Defence Industries 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 tec

5、hnical content shall not be changed 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, the ASD-STAN prEN will be submitted as a draft European Standard (prEN)

6、 to CEN (European Committee for Standardization) 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 t

7、he EN. ASD-STAN Technical Committee approves that: “This document is published by ASD-STAN for the needs of the European Aerospace Industry. The use of this standard is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr

8、om, is the sole responsibility of the user.” ASD-STAN reviews each standard and technical report at least every five years at which time it may be revised, reaffirmed, stabilized or cancelled. ASD-STAN invites you to send your written comments or any suggestions that may arise. All rights reserved.

9、No parts of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of ASD-STAN. Order details: E-mail: salesasd-stan.org Web address: http:/www.asd-s

10、tan.org/ Edition approved for publication 1st May 2017 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2017 ASD-STAN prEN 4641-200:2017 (E) 2 prEN4641-200:2017(E) Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and d

11、efinitions 3 4 Required characteristics . 3 5 Cable construction 4 6 Materials . 5 7 Test methods and performances . 5 8 Tooling 11 9 Quality assurance . 11 10 Designation and marking 12 11 Delivery conditions 12 12 Storage 12 13 Technical specification . 12 Foreword This standard was reviewed by th

12、e 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, this standard has received approval for Publication. prEN 4641-200:2017 (E) 3 prEN4641-200:2017(E) 1 Scope This p

13、roduct standard specifies the general characteristics, conditions for qualification, acceptance and quality assurance for a fibre optic cable with a 9/125 m, MM fibre core, and 900 m outside cable diameter and of semi-loose buffer construction for “inside avionics box” equipment fibre harnessing. 2

14、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. For undated references, the latest edition of the referenced document (including any amendme

15、nts) applies. EN 2424, Aerospace series Marking of aerospace products EN 2812, Aerospace series Stripping of electric cables EN 3475-601, Aerospace series Cables, electrical, aircraft use Test methods Part 601: Smoke density EN 3745, (all parts), Aerospace series Fibres and cables, optical, aircraft

16、 use Test methods EN 3838, Aerospace series Requirements and tests on user-applied markings on aircraft electrical cables EN 3909, Aerospace series Test fluids and test methods for electrical and optical components and sub-assemblies EN 4641-001, Aerospace series Cables, optical, 125 m diameter clad

17、ding Part 001: Technical specification IEC 60793-1-45, Optical fibres Part 1-45: Measurement methods and test procedures Mode field diameter 1) TR 4647, Aerospace series Termination procedure for EN 4639 optical contact 2) 3 Terms and definitions For the purposes of this document, the following term

18、s and definitions given in EN 3745-100 apply. 4 Required characteristics The characteristics of the cables, tested according to the methods described hereafter shall comply with the values defined in this product standard. 1) Published by: IEC International Electrotechnical Commission http:/www.iec.

19、ch/ 2) Published as ASD-STAN Technical Report at the date of publication of this standard by Aerospace and Defence Industries Association of Europe-Standardization (ASD-STAN), (www.asd-stan.org). prEN 4641-200:2017 (E) 4 prEN4641-200:2017(E) 5 Cable construction See Figure 1 and Table 1. Key 1 Core

20、2 Cladding 3 Primary coating 4 Primary buffer 5 Cable jacket Figure 1 Table 1 Property Value Mode field diameter 1 310 nm: (9,0 0,5) m 1 550 nm: (10,1 0,6) m Cladding (125 1,0) m Primary Coating diameter (250 10) m Core/Cladding concentricity 0,5 m Cladding non-circularity 0,7 % Coating/Cladding con

21、centricity 10 m Finished cable diameter (0,9 0,06) mm Cable mass 1,0 0,2 g/m Operating temperature 65 C to 150 C Fibre cut-off wavelength 1,260 nm Minimum bend radius (20 C) Installation : 4 mm Long term : 6 mm Storage : 18 mm (20 x cable outside diameter) Fibre tensile strength 200 N prEN 4641-200:

22、2017 (E) 5 prEN4641-200:2017(E) 6 Materials See Table 2. Table 2 Element Material Fibre Core Silica Cladding Primary coating Polyacrylate Primary buffer PTFE Cable jacket Polyimide 7 Test methods and performances 7.1 Tests in accordance with EN 3745-100 7.1.1 Optical fibre See Table 3. Table 3 Optic

23、al fibre performance requirements Test method EN 3745- Designation of test Test conditions and results 201 Visual examination Pass IEC 60793-1-45 Fibre Mode Field Diameter (MFD) MFD: (9,0 0,5) m 501 Optical fibre proof test 1 % 301 Method D Fibre attenuation Maximum attenuation 0,5 dB/km at 1 310 nm

24、, 0,4 dB/km at 1 550 nm at 20 C Minimum sample length: 100 m prEN 4641-200:2017 (E) 6 prEN4641-200:2017(E) 7.1.2 Fibre optic cable See Table 4. Table 4 Fibre optic cable performance requirements (1 of 4) Test method EN 3745- Designation of test Test conditions and results 201 Visual examination The

25、cable outer layer shall be continuous and free of visible defects such as lumps, abrasions, cracks, splits or blisters Number of sample: 1 Sample length: 3 m. 203 Buffer diameter (245 10) m 203 Outer jacket outside diameter (915 60) m 205 Method A Longitudinal stability Change in longitudinal dimens

26、ions between A and B: 7 mm. Number of samples: 3 Sample length: (2 0,05) m Perform Temperature Cycling Test Method 3745-402 25 Cycles 301 Method D Cable attenuation Maximum attenuation 0,50 dB/km at 1 310 nm, 0,40 dB/km at 1 550 nm at 20 C. Minimum sample length: 100 m 305 Cable immunity to ambient

27、light Not applicable due to installation application 306/402 Attenuation during temperature cycling Visual examination in accordance with EN 3745-201 Maximum variation of attenuation: 0, 25 dB at 1 310 nm Test method EN 3745-402 10 cycles High temperature: 150 C Low temperature: 65 C Duration at ext

28、reme temperatures: 30 min Rate of change: 5 C per minute Number of samples: 3 Sample length: 3 m 401 Cable accelerated aging Visual examination in accordance with EN 3745-201 Maximum variation in attenuation at 1 310 nm Maximum variation in attenuation after 24 h: 0,10 dB Residual maximum variation

29、in attenuation: 0,10 dB Mandrel diameter: 18 mm Test temperature: 150 C Number of temperature cycles: 1 Number of samples: 1 Sample length: (2 0,10) m 404 Thermal shock Visual examination in accordance with EN 3745-201 Maximum permissible variation in attenuation during test sequence and after 24h:

30、0,25 dB at 1 310 nm. High temperature: 150 C Low temperature: 65 C Duration at extreme temperatures: 30 min Number of samples: 3 Sample length: 3 m Number of temperature cycles: 10 405 Low/High Temperature Bend Not applicable due to installation application. prEN 4641-200:2017 (E) 7 prEN4641-200:201

31、7(E) Table 4 Fibre optic cable performance requirements (2 of 4) Test method EN 3745- Designation of test Test conditions and results 406 Cold bend Not applicable due to installation application. 407 Flammability No flaming particles shall fall from the sample during the test and the tissue paper sh

32、all not be ignited Period of flame application: 30 s Maximum burn length: 75 mm Self extinguish after 5 s Number of samples: 3 Sample length: (1 0,10) m 410 Thermal life Temperature rating: 150 C at 100 000 h 411 Method 2 Resistance to fluids Visual examination in accordance with EN 3745-201 Maximum

33、 variation of weight : m = 5 % No cracks Low colour modification Readable marking. See Table 3. 412 Humidity resistance Visual examination in accordance with EN 3745-201 Maximum residual attenuation: 0,10 dB at 1 310 nm. Maximum variation of weight: m = 5 % Number of samples: 1 Sample length: 20 m N

34、umber of cycles: 15 501 Fibre proof test 1 % 503 Scrape abrasion Visual examination in accordance with EN 3745-201 Maximum variation in attenuation: 0,10 dB at 1 310 nm. Number of samples: 3 Sample length: 3 m Ambient test: Load: 2,2 N Number of cycles: 100 High temperature test (150 C): Load: 2,2 N

35、 Number of cycles: 100 504 Micro-bending Maximum variation in attenuation: 0,25 dB at 1 310 nm Maximum residual attenuation 15 min after removing the load: 0,05 dB. Visual examination in accordance with EN 3745-201. Number of samples : 3 Load: 10 N Rate load is applied: 10 N/min Mandrel size = 3 mm

36、Number of samples: 3 Sample length: 4 m 505 Method B Tensile strength Maximum variation in attenuation: 0,25 dB at 1 310 nm Tensile strength: 5 N Pulling speed: (50 10) mm/min Number of samples: 3 Sample length: 5 m 506 Impact Maximum variation in attenuation: 0, 10 dB at 1 310 nm. Jacket shall not

37、crack or split Test temperature: 20 C Load to be applied: 2 N Radius intermediate piece: 15 mm Drop height: 150 mm Number of impacts: 2 Number of samples: 3 Sample length: 700 mm prEN 4641-200:2017 (E) 8 prEN4641-200:2017(E) Table 4 Fibre optic cable performance requirements (3 of 4) Test method EN

38、3745- Designation of test Test conditions and results 507 Cut-through Not applicable due to installation application. 508 Torsion No cracking or splitting of cable jacket. Maximum variation of attenuation: 0,10 dB at 1 310 nm. For 5 cycles: 0,25 dB Number of samples: 3 Sample length: 3,0 m Load to b

39、e applied: 5 N Number of cycles: 5 Distance between the rotating grip and the fixed grip: (0,25 0,01) m 509 Kink No kink shall occur at a diameter greater than minimum loop diameter maximum permissible variation of attenuation: 0,25 dB at 1 310 nm. Minimum loop diameter: 6,35 mm. Number of samples:

40、3 Sample length: 10 times bend radius 510 Method A Bend Maximum variation of attenuation: 0,10 dB at 1 310 nm Residual attenuation after removing the specimen from the test equipment: 0,10 dB Visual examination in accordance with EN 3745-201 Load to ensure contact between cable and mandrel: 2,2 N Ma

41、ndrel diameter: 18 mm Number of turns: 5 Number of samples: 1 Sample length: 3,0 m 510 Method B Bend Maximum transmittance change: 0,10 dB at 1 310 nm Mandrel diameters: 18 mm Mandrel spacing: (600 5) mm Number of samples: 1 Sample length: 5 m 511 Cable to cable abrasion Cat A: 1 optical, 1 copper (

42、18 AWG DR) Minimum number of cycles: 10 000 Load: 2,2 N Cat B: 2 optical cables Minimum number of cycles: 10 000 Load: 2,2 N No exposure of first material under outer jacket. Number of samples: 3 Sample length: 300 mm 512 Flexure endurance Visual examination in accordance with EN 3745-201 Maximum pe

43、rmissible variation in attenuation: 0, 25 dB at 1 310 nm. Jacket shall not split or crack Load: 2,2 N Mandrel diameter: 12 mm Number of cycles: 10 000 Number of samples: 3 Sample length: 5 m prEN 4641-200:2017 (E) 9 prEN4641-200:2017(E) Table 4 Fibre optic cable test methods (4 of 4) Test method EN

44、3745- Designation of test Test conditions and results 513 Crush resistance Maximum variation of attenuation: 0,05 dB at 1 310 nm No cracking or splitting of cable jacket Load: 445 N Area of load: 100 mm2 Number of samples: 3 Sample length: 3 m Duration of force application: 15 minutes 514 Bend twist

45、 Not applicable due to installation application. 515 Buffer insertion force Not applicable due to cable construction. 516 Severe bend Not applicable due to installation application. 517 Cable tie clamping Maximum transmittance change: 0, 05 dB at 1 310 nm. Mandrel diameter: (13 1) mm Number of cable

46、 ties applied: 6 Cable tie tension setting: #1 Number of samples: 3 Sample length: 4 m 601 Smoke density Test method : EN 3475-601 Specific optical smoke density (average) Ds 20 within 16 min test duration under both the flaming and non-flaming conditions. Value must be measured at the end of the te

47、st. 602 Toxicity Applicable 603 Nuclear radiation Not applicable due to application. 701 Cable stripping Buffer: 2 N per 30 mm Blade design (See EN 2812) Pulling speed 25 mm/min to 50 mm/min 703 Durability of manufacturers identity markings Not applicable as no marking is applied. 705 Contrast measu

48、rement Not applicable due to application. 706 EN 3838 except 6.8 Durability of user identification markings Not applicable due to application. prEN 4641-200:2017 (E) 10 prEN4641-200:2017(E) 7.2 Fluids test See Table 5. Table 5 List of test fluids (1 of 2) Test fluid No. Fluid family Type Test fluid to be used (Consider Note 1) Fluid in service (for reference) Test temperature 2 C Flash point C New Old 1a 1 Fuels Gasoline Toluene 30 % Isooctane 70 % v/v ISO 1817 Liquid B AVGAS-100LL NATO-F-18 40 4 1b 2 (Hyd