EN 50174-2:2009

SLOVENSKI STANDARD
01-oktober-2009
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SIST EN 50174-2:2001
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Information technology - Cabling installation -- Part 2: Installation planning and practices
inside buildings
Informationstechnik - Installation von Kommunikationsverkabelung -- Teil 2:
Installationsplanung und Installationspraktiken in Gebäuden
Technologies de l'information - Installation de câblages -- Partie 2: Planification et
pratiques d'installation à l'intérieur des bâtiments
Ta slovenski standard je istoveten z: EN 50174-2:2009
ICS:
33.040.50 Vodi, zveze in tokokrogi Lines, connections and
circuits
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50174-2
NORME EUROPÉENNE
May 2009
EUROPÄISCHE NORM
ICS 35.110; 91.140.50 Supersedes EN 50174-2:2000

English version
Information technology -
Cabling installation -
Part 2: Installation planning and practices inside buildings

Technologies de l'information -  Informationstechnik -
Installation de câblages - Installation
Partie 2: Planification et pratiques von Kommunikationsverkabelung -
d'installation à l'intérieur des bâtiments Teil 2: Installationsplanung
und Installationspraktiken in Gebäuden

This European Standard was approved by CENELEC on 2009-05-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50174-2:2009 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 215, Electrotechnical
aspects of telecommunication equipment.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50174-2 on
2009-05-01.
This European Standard supersedes EN 50174-2:2000.
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) 2010-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-05-01
EN 50174 comprises three parts. All three parts support the specification, implementation and operation of
information technology cabling. There are specific requirements for cabling systems that are in accordance
with the design requirements of the EN 50173 series. However, the three parts also apply to cabling systems
of any design including those in accordance with standards such as EN 50098-1 or EN 50098-2.
This part, EN 50174-2, is concerned with the planning and installation of information technology cabling
using metallic cabling and optical fibre cabling inside buildings. It provides guidance as to the responsibilities
of those involved and is intended to be referenced in relevant contracts.
Additional clauses containing normative requirements for specific types of premises will be added as
amendments, or as revisions, to this standard. At the time of publication of this European Standard, the
following clauses are planned:
– homes;
– data centres;
– operator buildings.
It does not cover those aspects of installation associated with the transmission of signals in free space
between transmitters, receivers or their associated antenna systems (e.g. wireless, radio, microwave or
satellite).
This document contains two informative annexes:
– Annex A, providing information on EMC and protection;
– Annex B, containing a minimum set of responsibilities applicable to installers and enabling national-
specific amendment to define other responsibilities.
__________
– 3 – EN 50174-2:2009
Contents
Introduction . 6
1 Scope and conformance . 9
1.1 Scope . 9
1.2 Conform ance . 9
2 Normative references . 10
3 Terms, definitions and abbreviations . 12
3.1 Terms and definitions . 12
3.2 Abbreviations . 14
4 Requirements for planning installations of information technology cabling . 15
4.1 Safety . 15
4.2 Documentation . 16
4.3 Pathways . 16
4.4 Pathway systems . 17
4.5 Cable management systems . 18
4.6 Closures . 20
4.7 Cabling . 20
5 Requirements for the installation of information technology cabling . 21
5.1 Safety . 21
5.2 Documentation . 22
5.3 Installation practice . 22
5.4 Surge protective devices . 28
5.5 Labelling . 28
5.6 Testing. 28
5.7 Contractual acceptance . 29
6 Segregation of metallic information technology cabling and mains power cabling. 29
6.1 General. 29
6.2 Requirements . 29
6.3 Recommendations . 36
7 Electricity distribution systems and lightning protection . 37
7.1 Electricity distribution systems . 37
7.2 Protection against lightning and induced overvoltages . 38
8 Office (commercial) premises . 39
8.1 General. 39
8.2 Office (commercial) premises cabling design overview . 39
8.3 Requirements for planning installations of information technology cabling . 40
8.4 Requirements for installers of information technology cabling . 40
8.5 Segregation of metallic information technology cabling and mains power cabling . 40

9 Industrial premises . 40
9.1 General. 40
9.2 Industrial premises cabling design overview . 40
9.3 Requirements for planning installations of information technology cabling . 41
9.4 Requirements for installers of information technology cabling . 42
9.5 Segregation of metallic information technology cabling and mains power cabling . 43
Annex A (informative) EMC and protection . 44
A.1 Coupling mechanisms and countermeasures . 44
A.2 The EMC concept . 47
A.3 Filtering and electrical isolation components and surge protective devices . 51
Annex B (informative) Application of responsibilities . 57
Bibliography . 60
Figures
Figure 1 – Schematic relationship between the EN 50174 series and other relevant standards . 7
Figure 2 – Cable arrangement in a metallic section . 20
Figure 3 – Continuity of metallic cable management systems . 24
Figure 4 – Interruption of metallic cable management systems at fire barriers . 24
Figure 5 – Flowchart for cable separation calculation . 32
Figure 6 – Separation of mains power and information technology cables without dividers . 33
Figure 7 – Separation of mains power and information technology cables with dividers . 34
Figure 8 – Separation of cables in pathway systems . 35
Figure 9 – Structure of generic cabling in industrial premises . 41
Figure 10 – Configuration of apparatus-based functional elements within industrial premises . 41
Figure A.1 – Screened cables reduce capacitive coupling . 44
Figure A.2 – Electrical field to cable, capacitive coupling example . 46
Figure A.3 – Magnetic field to loop, inductive coupling example . 46
Figure A.4 – Magnetic field . 47
Figure A.5 – Earthing arrangement . 47
Figure A.6 – Earthing and bonding of filters . 52
Figure A.7 – Mounting of filters .
...