EN 50290-4-2:2014

Communication cables - Part 4-2: General considerations for the use of cables - Guide to use

The scope of this European Standard is to help installers and cabling designers to understand the range of communication metallic cables available. To help this choice the fundamental and practical rules on how to use these cables are established. The related cables are specified in the documents issued by CLC/TC 46X and its sub-committees. These cables are: - telecom cables used in access network, - data communication twisted pairs cables, - coaxial cables used in CATV.

Kommunikationskabel - Teil 4-2: Allgemeine Betrachtungen für die Anwendung der Kabel - Leitfaden für die Verwendung

Câbles de communication - Partie 4-2: Considérations générales pour l'utilisation des câbles - Guide d'utilisation

Komunikacijski kabli - 4-2. del: Splošno o uporabi kablov - Vodilo za uporabo

General Information

• Status: Published
• Publication Date: 04-Dec-2014
• Withdrawal Date: 15-Sep-2016
• ICS: 33.120.10 - Coaxial cables. Waveguides
• Technical Committee: CLC/TC 46X - Communication cables
• Drafting Committee: CLC/TC 46X - Communication cables
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 26-May-2021
• 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/117 - Horizontal complement to the mandates to CEN/CENELEC concerning the execution of standardization work for the valuation of construction products and elements in respect of their resistance to fire
• Mandate: M/212 - ICT - metallic and optical cables and cabling systems
• Mandate: M/443 - Mandate to CEN and CENELEC concerning the execution of standardisation work for harmonized standards on power, control and communication cables related to the following end uses: 24/33: Supply of electricity, 26/33: Communications, 28/33: Fire detection and alarm
• Ref Project: SIST EN 50290-4-2:2015 - Communication cables - Part 4-2: General considerations for the use of cables - Guide to use

Relations

• Replaces: EN 50290-4-2:2008 - Communication cables - Part 4-2: General considerations for the use of cables - Guide to use
• Effective Date: 28-Jan-2023

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Komunikacijski kabli - 4-2. del: Splošno o uporabi kablov - Vodilo za uporaboKommunikationskabel - Teil 4-2: Allgemeine Betrachtungen für die Anwendung der Kabel - Leitfaden für die VerwendungCâbles de communication - Partie 4-2: Considérations générales pour l'utilisation des câbles - Guide d'utilisationCommunication cables - Part 4-2: General considerations for the use of cables - Guide to use33.120.10Koaksialni kabli. ValovodiCoaxial cables. WaveguidesICS:Ta slovenski standard je istoveten z:EN 50290-4-2:2014SIST EN 50290-4-2:2015en01-julij-2015SIST EN 50290-4-2:2015SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 50290-4-2
December 2014 ICS 33.120.10
Supersedes
EN 50290-4-2:2008
English Version
Communication cables - Part 4-2: General considerations for the use of cables - Guide to use
Kommunikationskabel - Teil 4-2: Allgemeine Betrachtungen für die Anwendung der Kabel - Leitfaden für die Verwendung This European Standard was approved by CENELEC on 2013-09-16. 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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17,
B-1000 Brussels © 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50290-4-2:2014 E SIST EN 50290-4-2:2015

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Foreword This document (EN 50290-4-2:2014) has been prepared by CLC/TC 46X "Communication cables".
The following dates are fixed: • latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-06-05 • latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2016-09-16 This document supersedes EN 50290-4-2:2008. EN 50290-4-2:2014 includes the following significant technical change with respect to
EN 50290-4-2:2008: − Subclause 5.3 was revised. This standard should be read in conjunction with EN 50290-1-1 and is completed by generic, sectional, family and detail specifications, as appropriate, to describe in a detailed manner each type of cable with its specific characteristics. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC). EN 50290-4, Communication cables — General considerations for the use of cables, is divided into the following sub-parts: − Part 4-1: Environmental conditions and safety aspects; − Part 4-2: Guide to use [the present document]. __________
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characteristics that will make it the ideal medium to use based on a particular set of circumstances. It is important to recognize the advantages of each and develop a system accordingly. Factors to consider when choosing communication cable include: − efficiency of transmission, − cost, − ease of installation and maintenance, − availability. 4 Types of cables 4.1 General When working with communication cables, an installer will deal with two basic types: − balanced, − unbalanced. Balanced cabling involve twisted-pair and/or twinaxial twisted cables that are composed of one or more pairs of copper wires (see Figure 1). Unbalanced cabling involves coaxial cable, that has only one centre conductor of either solid or stranded inner conductor and an outer concentric conductor. Most data and voice networks use twisted-pair cabling. Coaxial cable is now used primarily for CATV, satellite and video connections (see Figure 2).
Figure 1  Balanced cabling
Figure 2  Unbalanced cabling
4.2 Twisted pairs cables 4.2.1 Pair construction There are two different pairing constructions: − a pair made of two insulated wires twisted together (wire A and B in Figure 4); − a quad made of four insulated wires twisted together, providing two pairs from a star formation (first pair wire A and B and second pair wire D and C in Figure 3); − a pair made of two insulated wires twisted together; − a quad made of four insulated wires twisted together, providing two pairs. SIST EN 50290-4-2:2015

Figure 5  Example of pair arrangement in a telecommunication cable 4.3 Coaxial cable (unbalanced) Coaxial cable is called ‘coaxial’ because it includes one conductor surrounded by a layer of insulation, itself surrounded by a concentric conductor (a metallic foil or braid or a combination of both) and an outer sheath (see Figure 6). Coaxial cable is the primary type of communication cable used by cable TV companies for signal distribution between the community antenna (CATV, normally 75 Ω) and user’s homes and businesses. The WWW is now accessible through such communication mediums making possible all types of connections. It was once the primary medium for Ethernet and other types of local area networks because of its ability to transmit high frequencies. With the development of standards for Ethernet over twisted-pair, new installations of coaxial cable for this purpose have all but disappeared. SIST EN 50290-4-2:2015

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Coaxial cable is still used for connecting CCTV cameras to monitors, antenna’s and video switches. Cables for radio communication (mobile telephone) antenna’s are also coaxial, these are feeder cables and are normally 50 Ω.
Figure 6  Coaxial cable illustration There are several variations. Triaxial (Triax) is a form of cable that uses a single centre conductor with two shields (one could be tape and one braid). This is important when considering EMC (electromagnetic compatibility
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