SIST EN 2591-100:2024

SLOVENSKI STANDARD
01-december-2024
Aeronavtika - Električni in optični spojni elementi - Preskusne metode - 100. del:
Splošno
Aerospace series - Elements of electrical and optical connection - Test methods - Part
100: General
Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prüfverfahren -
Teil 100: Allgemeines
Série aérospatiale - Organes de connexion électrique et optique - Méthodes d'essais -
Partie 100 : Généralités
Ta slovenski standard je istoveten z: EN 2591-100:2024
ICS:
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 2591-100
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2024
EUROPÄISCHE NORM
ICS 49.060; 49.090 Supersedes EN 2591-100:2018
English Version
Aerospace series - Elements of electrical and optical
connection - Test methods - Part 100: General
Série aérospatiale - Organes de connexion électrique et Luft- und Raumfahrt - Elektrische und optische
optique - Méthodes d'essais - Partie 100 : Généralités Verbindungselemente - Prüfverfahren - Teil 100:
Allgemeines
This European Standard was approved by CEN on 3 June 2024.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2591-100:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Standard test conditions . 9
5 Test main requirements . 9
5.1 Fibre end preparation . 9
5.1.1 General. 9
5.1.2 Parameters . 9
5.1.3 Methods . 13
5.1.4 Specimen examination and acceptance . 13
5.1.5 Termination cleaning . 14
5.2 Light Launch System (LLS) . 14
5.2.1 General. 14
5.2.2 Generating the correct launch conditions . 15
5.2.3 Launch conditions specification for 62,5 µm/125 µm fibres and cables (NA = 0,275) . 16
5.2.4 Launch conditions specification for 50 µm/125 µm fibres and cables (NA = 0,2) . 19
5.3 Light Detection System (LDS) . 21
5.3.1 General. 21
5.3.2 Method . 22
5.3.3 Special precautions . 22
5.3.4 Documentation . 22
6 List of test methods . 23
7 Test report . 27
Bibliography . 28

European foreword
This document (EN 2591-100:2024) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by April 2025, and conflicting national standards shall be withdrawn at
the latest by April 2025.
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.
This document supersedes EN 2591-100:2018.
The main changes with respect to the previous edition are as follows:
— EN 2591-100 (P2), 08/2018:
o update of the test requirements for fibre end preparation and light launch conditions for
various sizes and types of fibres;
o addition of new test requirements for light detection systems.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: Austria, Belgium, Bulgaria, Croatia, Cyprus,
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
This document specifies the general requirements for the methods of testing elements of electrical,
optical and data transmission system connections used in aerospace applications.
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 2083, Aerospace series — Copper or copper alloys conductors for electrical cables — Product standard
EN 2084, Aerospace series — Cables, electrical, general purpose, with conductors in copper or copper
alloy — Technical specification
EN 2234, Aerospace series — Cables, electrical, fire-resistant — Technical specification
EN 2346, Aerospace series — Fire resistant electrical cables — Dimensions, conductor resistance and
mass
EN 3745-100, Aerospace series — Fibres and cables, optical, aircraft use — Test methods — Part 100:
General
EN 3745-201, Aerospace series — Fibres and cables, optical, aircraft use — Test methods — Part 201:
Visual examination
EN 4641-100, Aerospace series — Cables, optical 125 μm diameter cladding — Part 100: Tight structure
62,5/125 μm core GI fibre 1,8 mm outside diameter — Product standard
EN 4641-301, Aerospace series — Cables, optical 125 μm diameter cladding — Part 301: Tight structure
50/125 μm GI, fibre nominal 1,8 mm outside diameter — Product standard
EN 60793-1-43, Optical fibres — Part 1-43: Measurement methods and test procedures — Numerical
aperture measurement (IEC 60793-1-43)
EN IEC 60512-1, Connectors for electronic equipment — Tests and measurements — Part 1: General
(IEC 60512-1:2001)
EN IEC 60793-1-45, Optical fibres — Part 1-45: Measurement methods and test procedures — Mode field
diameter (IEC 60793-1-45)
IEC 60050-581, International Electrotechnical Vocabulary — Part 581: Electromechanical components
for electronic equipment
Published as ASD-STAN prEN at the date of publication of this document, available at: https://www.asd-
stan.org/.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-581, EN IEC 60512-1
and EN 3745-100 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
NOTE For the following terms, see EN 3745-100: optical fibre – core – cladding – fibre coating – refractive index
profile – core diameter – cladding diameter – concentricity error core/cladding – non circularity of core – non
circularity of cladding – attenuation – numerical aperture – bandwidth
3.1
element of electrical or optical connection
component the purpose of which is to ensure the connection of circuits
EXAMPLE Connector, module.
Note 1 to entry: In test standards, the term “element of connection” shall be used.
3.2
flight cover
protective cover
accessory designed to ensure, in flight, mechanical protection and sealing of front face of a non-coupled
connector
3.3
connector with built-in protection of contacts
connector with characteristics such that male or female contacts, mounted in a plug or receptacle,
cannot come into contact with the front of the connector to which it is coupled (scoop-proof) and in
which, in the event of accidental coupling of two parts or the connector equipped with male contacts, no
electrical contact can take place
3.4
contact pressure point
point at which a square ended gauge pin of the same basic diameter as the mating contact first engages
the female contact spring member
3.5
initial measurement
examination or measurement of characteristics carried out to determine the magnitude of the
variations produced by the stress or stresses applied
Note 1 to entry: This examination or measurement is carried out at the end of pre-conditioning and under
normal atmospheric conditions for measuring.
3.6
final measurement
examination or measurement of characteristics carried out at the end of the recovery to assess the
condition of the specimen after testing and to determine the magnitude of the variations in
characteristics in relation to the values recorded at initial measuring
3.7
flammability
characteristic of a product which shows resistance when exposed for a given duration to a standard
external flame, combustion remains localized and stops spontaneously after withdrawal of the flame
3.8
fire resistance
characteristic of a product which, when subjected to a standard flame:
— retains its electrical role for six minutes;
— the flame does not propagate to the other side of the support in the first twenty minutes
3.9
values of alternating voltage and current
unless otherwise indicated, alternating voltage and current are indicated in root mean square values
3.10
data bus line
pair of twisted wires, shielded, having a specified impedance, a matched impedance at its two ends and
used for data transport
3.11
branch line
section of twisted wires, shielded, with a specified impedance, which connects equipment to a bus line
3.12
line coupler
element of electrical or optical connection the purpose of which is to shunt the transmission signals
from a bus line to equipment
3.13
line coupler, single
coupler consisting of one line and one branch
3.14
line coupler, double
coupler consisting of one line and two branches
3.15
in-line splice
permanent element of electrical or optical connection for two-wire cables
3.16
line termination
end line component the purpose of which is to match the bus line to its characteristic impedance
3.17
branch termination
end branch termina
...