EN 50117-3-1:2002

Coaxial cables - Part 3-1: Sectional specifications for cables used in Telecom applications - Miniaturized cables used in digital communication systems

This European Standard relates to EN 50117 1 and should be read in conjunction with this generic specification. This standard applies to single and/or multiple miniaturised coaxial cables used in digital communication systems on the Telecom applications. The cables covered by this standard are used for the internal wiring of and interconnection between switching-, transmission-, multiplexing- and cross-connect equipment and for the connections to the digital distribution frame. These coaxial cables are designed for the transmission of E1 (2 Mbit/s), E2 (8 Mbit/s), E3 (34 Mbit/s), E4 (140 Mbit/s), STM (155 Mbit/s), DS1 (1,5 Mbit/s), DS2 (6 Mbit/s) and DS3 (34 Mbit/s) signals. Cables are connected to the equipment via a coaxial connector or other suitable ways. The purpose of this standard is to specify the applicable test methods and requirements for the electrical, mechanical, environmental and fire performance of the cables. The cables covered by this standard are intended to be used with voltages up to 50 V a.c. and/or 120 V d.c.

Koaxialkabel - Teil 3-1: Rahmenspezifikation für Kabel für Anwendungen in der Telekommunikation - Miniaturkabel für digitale Kommunikationssysteme

Câbles coaxiaux - Partie 3-1: Spécification intermédiaire pour les câbles utilisés dans les applications de télécommunication - Câbles miniaturisés utilisés dans les réseaux de communication numériques

Coaxial cables - Part 3-1: Sectional specifications for cables used in Telecom applications - Miniaturized cables used in digital communication systems

General Information

• Status: Published
• Publication Date: 04-Jul-2002
• ICS: 33.120.10 - Coaxial cables. Waveguides
• Technical Committee: CLC/TC 46X - Communication cables
• Drafting Committee: CLC/SC 46XA - Coaxial cables
• Parallel Committee: IEC/SC 46A - IEC_SC_46A
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 30-Nov-2022
• Completion Date: 23-Sep-2025
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Mandate: M/212 - ICT - metallic and optical cables and cabling systems
• Ref Project: SIST EN 50117-3-1:2004 - Coaxial cables -- Part 3-1: Sectional specifications for cables used in Telecom applications - Miniaturized cables used in digital communication systems

Overview

EN 50117-3-1:2002 (CLC) is a European sectional specification for miniaturized coaxial cables used in digital communication systems. It supplements the generic EN 50117-1 and defines construction details and the test methods and performance requirements for electrical, mechanical, environmental and fire behaviour of single- and multi‑miniature coaxial cables used in telecom internal wiring and interconnections (switching, transmission, multiplexing, cross‑connect equipment and digital distribution frames).

Key topics and technical requirements

• Scope: cables designed for E1, E2, E3, E4, STM (155 Mbit/s), DS1, DS2 and DS3 signal transmission and intended for use at up to 50 V a.c. / 120 V d.c.; connections via coaxial connectors or other suitable terminations.
• Construction requirements: inner conductor (solid or stranded), foamed polyolefin dielectric (to reduce diameter), outer conductor options (braid, foil + braid, high‑permeability tape, longitudinal foil or combinations). Sheath materials must meet halogen‑free flame retardant requirements (EN 50290‑2‑27).
• Electrical tests and limits:
  • Dielectric strength: 2 kV d.c. or 1.5 kV a.c. for 1 minute
  • Insulation resistance: ≥ 10 MΩ·km
  • Characteristic impedance: 75 Ω ± 3 Ω
  • Return loss: RL ≥ 20 dB minimum over frequencies specified in the detail specification
  • Transfer impedance: < 10 mΩ/m from 1 MHz to 30 MHz
  • Velocity of propagation and longitudinal attenuation to be specified in detail specifications
• Mechanical tests:
  • Adhesion of dielectric: force between 0.1 MPa and 1.0 MPa on a 25 mm sample
  • Crush resistance: 700 N load; cable must meet return loss after 5 min recovery
• Environmental and fire: many specific environmental tests are marked not applicable or left to detail specification; reaction‑to‑fire requirements refer to Construction Products Directive and EN 50290‑4‑1.
• Crosstalk (NEXT) test procedure given in informative Annex A for paired cables.

Applications and users

• Practical applications: internal wiring and interconnection within telecom racks and equipment, connections to digital distribution frames, and short‑range digital signal routing where compact coaxial assemblies are required.
• Primary users: cable designers and manufacturers, test laboratories, telecom equipment vendors, procurement/specification engineers and compliance officers responsible for product selection, acceptance testing and in‑house wiring standards.

Related standards

• EN 50117‑1 (generic coaxial cable spec) - read in conjunction with
• EN 50290‑1‑2, EN 50290‑2‑20, EN 50290‑2‑27, EN 50290‑4‑1 (communication cable materials, design and fire/environment guidance)

Keywords: EN 50117-3-1:2002, coaxial cables, miniaturized cables, digital communication systems, telecom applications, characteristic impedance 75 Ω, dielectric strength, transfer impedance, halogen-free sheath, test methods.

Standards Content (Sample)

SLOVENSKI SIST EN 50117-3-1:2004

STANDARD
april 2004
Coaxial cables - Part 3-1: Sectional specifications for cables used in Telecom
applications - Miniaturized cables used in digital communication systems
ICS 33.120.10 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 50117-3-1
NORME EUROPÉENNE
EUROPÄISCHE NORM July 2002
ICS 33.120.10
English version
Coaxial cables
Part 3-1: Sectional specifications for cables
used in Telecom applications -
Miniaturized cables used in digital communication systems
Câbles coaxiaux Koaxialkabel
Partie 3-1: Spécification intermédiaire Teil 3-1: Rahmenspezifikation
pour les câbles utilisés dans les für Kabel für Anwendungen
applications de télécommunication - in der Telekommunikation -
Câbles miniaturisés utilisés dans les Miniaturkabel für digitale
réseaux de communication numériques Kommunikationssysteme
This European Standard was approved by CENELEC on 2002-03-01. CENELEC 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 Central Secretariat or to any CENELEC 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 CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50117-3-1:2002 E
Foreword
This European Standard was prepared by SC 46XA, Coaxial cables, of Technical Committee
CENELEC TC 46X, Communication cables.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved
by CENELEC as EN 50117-3-1 on 2002-03-01.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-03-01
- latest date by which the national standards
conflicting with the EN have to be withdrawn (dow) 2005-03-01
Annexes designated "informative" are given for information only.
In this standard, annex A is informative.
__________
– 3 – EN 50117-3-1:2002
Contents
1 Scope . 4
2 Normative references . 4
3 Definitions. 5
4 Requirements for cable construction . 5
4.1 General. 5
4.2 Inner conductor . 5
4.3 Dielectric. 5
4.4 Outer conductor or screen . 5
4.5 Filling compounds. 6
4.6 Moisture barriers . 6
4.7 Wrapping layers . 6
4.8 Sheath . 6
4.9 Metallic protection . 6
4.10 Cable integral suspension strand (messenger wire) . 6
4.11 Oversheath . 6
4.12 Fauna proofing . 6
4.13 Chemical and/or environmental proofing. 6
4.14 Cable identification . 6
4.14.1 Sheath marking . 7
4.14.2 Labelling . 7
5 Test methods for completed cables. 7
5.1 Electrical tests. 8
5.1.1 Low-frequency and d.c. electrical measurements. 8
5.1.2 High-frequency electrical and transmission measurements . 8
5.2 Mechanical tests. 9
5.3 Environmental tests . 9
5.4 Fire performance tests . 9
Annex A (informative) Crosstalk .10
Table 1 – Low frequency and d.c. electrical measurements . 8
Table 2 – High frequency electrical and transmission measurements. 8
Table 3 – Mechanical tests. 9
Table 4 – Environmental tests . 9
Table 5 – Fire performance test methods. 9

1 Scope
This European Standard relates to EN 50117-1 and should be read in conjunction with
this generic specification. This standard applies to single and/or multiple miniaturised
coaxial cables used in digital communication systems on the Telecom applications.
The cables covered by this standard are used for the internal wiring of and
interconnection between switching-, transmission-, multiplexing- and cross-connect
equipment and for the connections to the digital distribution frame.
These coaxial cables are designed for the transmission of E1 (2 Mbit/s), E2 (8 Mbit/s),
E3 (34 Mbit/s), E4 (140 Mbit/s), STM (155 Mbit/s), DS1 (1,5 Mbit/s), DS2 (6 Mbit/s) and
DS3 (34 Mbit/s) signals.
Cables are connected to the equipment via a coaxial connector or other suitable ways.
The purpose of this standard is to specify the applicable test methods and requirements
for the electrical, mechanical, environmental and fire performance of the cables.
The cables covered by this standard are intended to be used with voltages up to
50 V a.c. and/or 120 V d.c.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from
other publications. T
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