EN 4641-106:2018
(Main)Aerospace series - Cables, optical, 125 µm diameter cladding - Part 106: Semi-loose structure 62,5/125 µm GI fibre nominal 0,9 mm outside diameter - Product standard
Aerospace series - Cables, optical, 125 µm diameter cladding - Part 106: Semi-loose structure 62,5/125 µm GI fibre nominal 0,9 mm outside diameter - Product standard
This document specifies the general characteristics, conditions for qualification, acceptance and quality assurance for a fibre optic cable with a 62,5/125 µm, MM fibre core, and 900 µm outside cable diameter and of semi-loose buffer construction for "inside avionics box" equipment fibre harnessing.
Luft- und Raumfahrt - Lichtwellenleiterkabel, Mantelaußendurchmesser 125 μm - Teil 106: Kompaktaderstruktur 62,5/125 μm GI-Faser, Kabelaußendurchmesser 0,9 mm - Produktnorm
Série aérospatiale - Câbles, optiques, diamètre extérieur de la gaine optique 125 µm - Partie 106 : Câble à structure semi-libre, fibre à gradient d’indice 62,5/125 μm, diamètre extérieur 0,9 mm - Norme de produit
La présente Norme européenne spécifie les caractéristiques générales ainsi que les conditions de qualification, d’acceptation et d’assurance qualité pour un câble à fibre optique à gradient d’indice 62,5/125 µm, avec cœur de fibre MM, de diamètre extérieur de 900 µm et de construction semi-libre pour le câblage fibre des équipements de « boîtiers d’avionique intérieurs ».
Aeronavtika - Kabli, optični, zunanji premer obloge vlakna 125 µm - 106. del: Polohlapna struktura obloge GI 62,5/125 µm, zunanji premer vlakna 0,9 mm - Standard za proizvod
Ta dokument določa splošne značilnosti, pogoje kvalifikacije, sprejemljivosti in zagotavljanja kakovosti za optični kabel s premerom 62,5/125 µm, večplastnim jedrom in zunanjim premerom kabla 900 µm ter pol-ohlapno strukturo obloge za opremljanje »notranjosti letalske elektronike«.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2019
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Aerospace series - Cables, optical, 125 µm diameter cladding - Part 106: Semi-loose
structure 62,5/125 µm GI fibre nominal 0,9 mm outside diameter - Product standard
Luft- und Raumfahrt - Lichtwellenleiterkabel, Mantelaußendurchmesser 125 µm - Teil
106: Kompaktader, 62,5/125 µm GI-Faser, Kabelaußendurchmesser 0,9 mm -
Produktnorm
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Ta slovenski standard je istoveten z: EN 4641-106:2018
ICS:
33.180.10 2SWLþQD YODNQDLQNDEOL Fibres and cables
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 4641-106
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2018
EUROPÄISCHE NORM
ICS 49.090
English Version
Aerospace series - Cables, optical, 125 µm diameter
cladding - Part 106: Semi-loose structure 62,5/125 µm GI
fibre nominal 0,9 mm outside diameter - Product standard
Série aérospatiale - Câbles, optiques, diamètre Luft- und Raumfahrt - Lichtwellenleiterkabel,
extérieur de la gaine optique 125 µm - Partie 106 : Mantelaußendurchmesser 125 µm - Teil 106:
Câble à structure semi-libre, fibre à gradient d'indice Kompaktader, 62,5/125 µm GI-Faser,
62,5/125 µm, diamètre extérieur 0,9 mm - Norme de Kabelaußendurchmesser 0,9 mm - Produktnorm
produit
This European Standard was approved by CEN on 8 July 2018.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC 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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4641-106:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 4
5 Cable construction . 5
6 Materials . 5
7 Test methods and performances . 6
8 Tooling . 12
9 Quality assurance . 12
10 Designation and marking . 12
11 Delivery conditions . 13
12 Storage . 13
13 Technical specification . 13
European foreword
This document (EN 4641-106:2018) 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 Official 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 2019, and conflicting national standards shall be withdrawn at the latest
by May 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
1 Scope
This European Standard specifies the general characteristics, conditions for qualification, acceptance and quality
assurance for a fibre optic cable with a 62,5/125 µm, MM fibre core, and 900 µm outside cable diameter and of
semi-loose buffer construction for “inside avionics box” equipment fibre harnessing.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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 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 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 µm diameter cladding — Part 001: Technical specification
1)
TR 4647, Aerospace series — Termination procedure for EN 4639 optical contact
3 Terms and definitions
For the purposes of this document, the following terms and definitions given in EN 3745-100 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
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 as ASD-STAN Technical Report at the date of publication of this European Standard by Aerospace and Defence
Industries Association of Europe-Standardization (ASD-STAN), (www.asd-stan.org).
5 Cable construction
See Figure 1 and Table 1.
Key
1 Core
2 Cladding
3 Primary buffer
4 Secondary buffer
5 Cable jacket
Figure 1
Table 1
Property Value
Core (62,5 ± 3,0) µm
Cladding (125 ± 2,0) µm
Primary coating (250 ± 10) µm
Finished cable diameter (915 ± 60) µm
Cable mass ≤ 1,3 g/m
Operating temperature − 65 °C to 150 °C
Numerical aperture 0,275 ± 0,015
Installation: 4 mm
Minimum bend radius (20 °C) Long term: 6 mm
Storage: 18 mm (20 x cable outside diameter)
Fibre tensile strength > 200 N
6 Materials
See Table 2.
Table 2
Element Material
Core
Silica
Fibre
Cladding
Primary buffer Polyacrylate
Secondary buffer PTFE
Jacket(s) 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 — Optical fibre performance requirements
Test method
Designation of test Test conditions and results
EN 3745-
201 Fibre visual examination Pass
202 Fibre core dimensions Method D: Core diameter: (62,5 ± 3) µm
501 Optical fibre proof test > 1 %
Cladding diameter: (125 ± 2) µm
Method A or B
202 Fibre cladding dimension
Sample should be in accordance with test methods
Number of sample: 1
Primary coating outside
203 Not applicable
diameter
Fibre dimension core non Core non circularity: ≤ 5 % (3 µm)
circularity Number of sample: 1
Fibre dimension cladding ≤ 1,0 %
non circularity Number of sample: 1
Fibre dimension concentricity ≤ 1,5 µm
error Number of sample: 1
At 20 °C
301 ≤ 3,2 dB/km at 850 nm
Fibre attenuation
Method D ≤ 0,7 dB/km at 1 300 nm
Minimum sample length: 100 m
Numerical aperture:
302 Numerical aperture 0,275 ± 0,015 at λ = (850 ± 20) nm
Sample length: 2 m
Bandwidth ≥ 200 MHz/km at 850 nm
Bandwidth ≥ 500 MHz/km at 1 300 nm
Number of samples: 1
303 Bandwidth
Minimum sample length: 1 km
Central wavelengths: (850 ± 10) nm, (1 300 ± 10) nm
Spectral width (− 3 dB): ≤ 10 nm for 850 nm and 1 300 nm
7.1.2 Fibre optic cable
See Table 4.
Table 4 — Fibre optic cable performance requirements (1 of 4)
Test method
Designation of test Test conditions and results
EN 3745-
The cable outer layer shall be continuous and free of visible
defects such as lumps, abrasions, cracks, splits or blisters.
201 Visual inspection
Number of sample: 1.
Sample length: 3 m.
203 Buffer diameter (250 ± 10) µm
203 Outer jacket outside diameter (915 ± 60) µm
Change in longitudinal dimensions between A and B: ≤ 7 mm.
Sample length: (2,0 ± 0,03) m
Longitudinal stability
Method A
Number of samples: 3
Number of temperature cycles (EN 3745-402): 25.
Maximum attenuation ≤ 3,2 dB/km at 850 nm, ≤ 0,7 dB/km at
1 300 nm at 20 °C.
Cable attenuation
Method D
Minimum sample length: ≥ 100 m
305 Cable immunity to ambient light Not applicable due to installation application
Visual examination in accordance with EN 3745-201
α ≤ 0, 25 dB at 850 nm and 1 300 nm.
Test method EN 3745-402 – 10 cycles
Attenuation during temperature
306/402
High temperature: 150 °C – Low temperature: − 65 °C
cycling
Duration at extreme temperatures: 30 min
Rate of change: 5 °C per min
Number of samples: 3 – Sample length: 5 m
Visual examination in accordance with EN 3745-201
α ≤ 0, 25 dB at 850 nm and 1 300 nm.
Variation in attenuation after 24 h: ≤ 0,25 dB
401 Cable accelerated aging Residual variation in attenuation: ≤ 0,25 dB
Mandrel diameter: 18 mm
Test temperature: 150 °C – Number of temperature cycles: 1
Number of samples: 1 – Sample length: (3,00 ± 0,05) m
Visual examination in accordance with EN 3745-201
Permissible variation in attenuation during test sequence and
after 24h: Δα ≤ 0,25 dB at 850 nm and 1 300 nm.
High temperature: 150 °C
Low temperature: − 65 °C
404 Thermal shock
Duration at extreme temperatures: 30 min
Number of samples: 3
Sample length: ≥ 5 m
Number of temperature cycles: 10
Table 4 — Fibre optic cable performance requirements (2 of 4)
Test method
Designation of test Test conditions and results
EN 3745-
406 Cold bend Not applicable due to installation application.
No flaming particles shall fall from the sample during the test
and the tissue paper shall not be ignited
Period of flame application: 30 s
407 Flammability
Maximum burn length: 75 mm – Self extinguish after 5 s
Number of samples: 5 – Sample length: (1 ± 0,05) m
410 Thermal life Temperature rating: 150 °C at 100 000 h
Resistance to fluids See Table 5.
Method 2
Visual examination in accordance with EN 3745-201
Maximum residual attenuation: ≤ 0,10 dB at 1 300 nm.
Maximum variation of weight: Δm = 5 %
412 Humidity resistance
Number of samples: 1
Sample length: ≥ 20 m
Number of cycles: 15
501 Fibre proof test ≥ 1 %
Visual examination in accordance with EN 3745-201
Maximum variation in attenuation: Δα ≤ 0,25 dB at 1 300 nm.
Number of samples: 3 – Sample l
...
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