ASD-STAN PREN 4641-301-2010 Aerospace series Cables optical 125 diameter cladding Part 301 Tight structure 50 125 GI fibre nominal 1 8 mm outside diameter Product standard (Edition.pdf

1、ASD STANDARD NORME ASD ASD NORM prEN 4641-301 Edition P 1 June 2010 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Descriptors: ENGLISH VERSION Aerospa

2、ce series Cables, optical 125 m diameter cladding Part 301: Tight structure 50/125 m GI fibre nominal 1,8 mm outside diameter Product standard Srie arospatiale Cble, optique, diamtre extrieur de la gaine optique 125 m Partie 301 : Structure serre, fibre gradient dindice 50/125 m, diamtre extrieur 1,

3、8 mm Norme produit Luft- und Raumfahrt Lichtwellenleiterkabel, Claddingdurchmesser 125 m Teil 301: Festaderaufbau GI 50/125m, Faser Kabelauendurchmesser 1,8 mm Produktnorm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries

4、 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 change

5、d 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 Standardization)

6、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 30 June 2

7、010 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2010 by ASD-STAN prEN 4641-301:2010 (E) 2 Contents Page Foreword2 1 Scope 3 2 Normative references 3 3 Definitions, symbols and abbreviations3 4 Required characteristics.3 5 Cable cons

8、truction 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 13 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical D

9、omain. 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 4641-301:2010 (E) 3 1 Scope This product standard specifies the general characteristics, conditions for qualifi

10、cation, acceptance and quality assurance for a fibre optic cable with a 50/125 m Graded Index fibre core, 1,8 mm outside diameter for non pull-proof contact designs. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references

11、 only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 9133, Aerospace series Quality management systems, Qualification procedure for aerospace standard parts EN 3745-100 (all parts), Aerospace series Fibres and

12、cables, optical, aircraft use Test methods Part 100: General EN 3475-601, Aerospace series Cables, electrical, aircraft use Test methods Part 601: Smoke density EN 3838, Aerospace series Requirements and tests on user-applied markings on aircraft electrical cables 1)EN 2812, Aerospace series Strippi

13、ng of electrical cables EN 3909, Aerospace series Test fluids and test methods for electric components and sub-assemblies EN 4641-001, Aerospace series Cables, optical, 125 m diameter cladding Part 001: Technical specification TR 6058, Cable code identification list 2)3 Definitions, symbols and abbr

14、eviations For the purposes of this standard, the definitions, symbols and abbreviations detailed 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) P

15、ublished as ASD-STAN Prestandard at the date of publication of this standard by Aerospace and Defence Industries Association of Europe-Standardization (ASD-STAN), (www.asd-stan.org). 2) Published as ASD-STAN Technical Report at the date of publication of this standard by Aerospace and Defence Indust

16、ries Association of Europe-Standardization (ASD-STAN), (www.asd-stan.org). prEN 4641-301:2010 (E) 4 5 Cable construction See Figure 1 and Table 1. Key 1 Core 2 Cladding 3 Primary buffer 4 Secondary buffer 5 Strength member 6 Outer jacket Figure 1 Table 1 Property Value Core diameter (50 3,0) m Cladd

17、ing diameter (125 2,0) m Core/cladding concentricity 3 m Core non circularity 5 % Cladding non circularity 2 % Primary buffer (245 15) m Attenuation at 850 nm (20 C) 200 N 3 2 4 5 6 1 prEN 4641-301:2010 (E) 5 6 Materials See Table 2. Table 2 Element Material Core Fibre Cladding Silica Primary buffer

18、 High Temperature Polyacrylate Secondary buffer High Temperature Polymer(s) Mechanical strength reinforcement Aramid/Aramid-Fibreglass Woven Braid Jacket(s) High Temperature Polymer 7 Test methods and performances 7.1 Tests in accordance with EN 3745-100 7.1.1 Optical fibre See Table 3. Table 3 Opti

19、cal fibre performance requirements Test method EN 3745 Designation of test Test conditions and results 201 Fibre visual examination Pass 202 Fibre core dimension Method A: core diameter = (50 3) m 501 Optical fibre proof test 1 % 202 Fibre cladding dimension Cladding diameter: (125 2) m Method A or

20、B Sample should be in accordance with test methods Number of sample: 1 203 Primary coating outside diameter Not applicable 202 Fibre dimension core non circularity Core non circularity : 5 % (3 m) Number of sample: 1 202 Fibre dimension cladding non circularity Cladding non circularity : 2 % (2,5 m)

21、 Number of sample: 1 continued prEN 4641-301:2010 (E) 6 Table 3 Optical fibre performance requirements (concluded) Test method EN 3745 Designation of test Test conditions and results 202 Fibre dimension concentricity error Concentricity error 3 m Number of sample: 1 301 Method A Fibre attenuation Ma

22、ximum attenuation: 5 dB/km at 850 nm, 3 dB/km at 1 300 nm at 20 oC Minimum sample length: 100 m 302 Numerical aperture Numerical aperture: 0,2 0,015 at = (850 20) nm Sample length: 2 m 303 Bandwidth Bandwidth 500 MHz/km at 850 nm 500 MHz/km at 1 300 nm Number of sample: 1 Minimum sample length: 1 km

23、 Central wavelengths: (850 10) nm (1 300 10) nm Spectral width (- 3 dB): 10 nm for 850 nm 7.1.2 Fibre optic cable See Table 4. Table 4 Fibre optic cable performance requirements Test method EN 3745- Designation of test Test conditions and results 201 Visual Inspection The outer jacket shall have the

24、 correct identification as specified in this standard. The jacket 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 (925 75) m 203 Outer jacket outside diameter (1,80 0,1) mm 205 Method A

25、Longitudinal stability Visual examination in accordance with EN 3745-201 Shrinkage or elongation 2 m Number of samples: 2 407 Flammability No flaming particles shall fall from the sample during the test and the tissue paper shall not be ignited Period of flame application: 30 seconds Maximum burn le

26、ngth: 75 mm Self extinguish after 5 sec Number of samples: 5 Sample length: (1 0,05) m 410 Thermal life Test Sample: 100 m Maximum permissible variation in attenuation: 200 N Number of samples: 1 continued prEN 4641-301:2010 (E) 9 Table 4 Fibre optic cable performance requirements (continued) Test m

27、ethod EN 3745- Designation of test Test conditions and results 506 Impact Residual variation in attenuation: 0,3 dB at 850 nm Energy to be applied: 3 J Radius intermediate piece :15 mm Mass of hammer: 800 g Height: 400 mm Number of impacts: 5 Sample length 700 mm Number of samples: 5 Distance betwee

28、n impacts : 0 mm 507 Cut-through Visual Examination in accordance with EN 3745-201 Monitor attenuation to determine fibre breakage of the sample during testing at 20 C and 150 C Load to be applied: 20 N Duration of load application :1 min Number of samples: 3 Sample length: (2 0,01) m Rate of load a

29、pplication: (50 10) N/min 508 Torsion Variation of attenuation: 0,25 dB Number of samples: 1 Sample length: (2 0,01) m Load to be applied: 150 N Number of cycles: 1 000 Distance between the rotating grip and the fixed grip: (0,25 0,01) m 509 Kink Permissible variation of attenuation: 3 dB Minimum lo

30、op diameter: 10 mm Number of samples: 3 Sample length 10 times bend radius 510 method A Bend Visual examination in accordance with EN 3745-201 variation of attenuation: 0,2 dB Residual attenuation after removing the specimen from the test equipment: 0,1 dB Load to ensure contact between the cable an

31、d the mandrel: 20 N Mandrel diameter: 25 mm Number of turns: 10 Number of sample: 1 Sample length: (10 0,01) m 511 Cable to cable abrasion Visual examination in accordance with EN 3745-201 No exposure of first material under outer jacket Category A: 1 optical, 1 copper (16 AWG DR) Minimum number of

32、cycles: 2 800 000 Load: 10 N Category B: 2 optical cables Minimum number of cycles: 500 000 Load = 10 N Number of samples: 3 Sample length: 300 mm 512 Flexure endurance Visual examination in accordance with EN 3745-201 Permissible variation in attenuation: 0,25 dB at 850 nm Load: 5 N Mandrel diamete

33、r: 30 mm Number of cycles: 3 000 Sample length: 5 m Number of samples: 3 continued prEN 4641-301:2010 (E) 10 Table 4 Fibre optic cable performance requirements (concluded) Test method EN 3745- Designation of test Test conditions and results 513 Crush resistance Variation of attenuation: 1dB Load: 50

34、0 N during 10 s Mandrel diameter: 10 mm Number of samples: 5 Sample length: 5 m 514 Bend twist Not applicable 515 Buffer insertion force Not applicable 516 Severe bend Not applicable 517 Cable tie clamping Maximum transmittance change: 0,05 dB Mandrel diameter: (13 1) mm Number of cable ties applied

35、 6 Cable tension setting: #1 Number of samples: 3 Sample length: 4 m 601 Smoke density Test method: EN 3475-601 Specific optical smoke density (average) Dm 200 within 4 minutes test duration under both the flaming and non-flaming conditions. Value must be measured at the end of the test. Number of

36、samples: 8 Sample length: 3,1 m 602 Toxicity Not applicable 603 Nuclear radiation Not applicable 701 Cable stripping Visual examination in accordance with EN 3745-201 Strip force 20 N Sample length: 50 mm 703 Durability of manufacturers identity markings Examine marking in accordance with EN 3745-20

37、1 visual inspection Number of samples: 1 Length of strokes: 10 mm Stroke rate: (55 5) cycles/min Number of strokes: 125 Needle size: 0,5 mm Weight on needle: 150 g 705 Contrast measurement 50 % prEN 4641-301:2010 (E) 11 7.2 Fluids test See Table 5. Table 5 List of fluids Fluids family Type Fluid num

38、ber see EN 3909 Test temperature 2 C Duration 24 hours Kerosene 2 70 Fuel Gasoline 1 40 Mineral 7 70 Oil Synthetic 9 Mineral 5 80 Hydraulic Fluid Phosphate Ester 3 70 Runway 14 25 De-icer Aircraft 15 25 IPA 10 25 MEK 12 25 Solvent White Spirit 11 25 Cleaner Aqueous Alkali 13 25 Sullage Formaldehyde

39、16 25 Fire Extinguishant Hepta-fluoropropane 17 25 8 Tooling See TR 4667 for termination process. 9 Quality assurance See EN 4641-001. prEN 4641-301:2010 (E) 12 10 Designation and marking 10.1 General principle of designation EXAMPLE Description block CABLE FIBRE OPTIC Identity block EN4641-301 Numb

40、er of the basic standard Product standard 10.2 Marking The marking shall comprise of the cable reference, the manufacturer code and the last two digits of the year of manufacture shall conform to EN 2424. The marking may be done wholly or partially in code by agreement with the user. The outer jacke

41、t of the cable shall accept marking with UV laser. Hot stamping is forbidden. 10.3 Colours The colour of the outer jacket will be light purple. 11 Delivery conditions 11.1 Packaging See EN 4641-001. 11.2 Labelling See EN 4641-001. 11.3 Delivery lengths See EN 4641-001. The minimum delivery length of

42、 a fibre or cable is by agreement between customer and supplier. 12 Storage Fibre optic cables shall be stored as described hereunder: Humidity: 90 % Temperatures: - 60 C to 85 C prEN 4641-301:2010 (E) 13 CAUTION Let cable warm up prior to handling if fibre optic cable has been stored for prolonged periods of time below 0 C. 13 Technical specification See EN 4641-001