EN 50468:2009

Resistibility requirements to overvoltages and overcurrents due to lightning for equipment having telecommunication ports

This European Standard specifies the minimum level of resistibility of equipment having telecommunication port(s) to overvoltages and overcurrents. This European Standard covers telecommunication equipment installed at customer premises as shown in Figure 1. Overvoltages or overcurrents covered by this European Standard are surges due to direct or indirect lightning on the telecommunication line plant. Overvoltages or overcurrent not covered by this European Standard are – short-term induction of alternating voltages from electric power systems (including electrified railway), – earth potential rise due to power faults or load switching, – direct contacts between telecommunication lines and low voltage power lines. This European Standard is intended for use by network (public/private) operators and the equipment manufacturers. This European Standard applies to equipment having telecommunication port(s) connected to external conductors, i.e. conductor located outside the customer’s building. The tests are type tests and, although they are applicable to a complete system, it is recognised that they may be applied to individual items of equipment during development and design work.

Anforderungen zur Zerstörfestigkeit von Einrichtungen mit Telekommunikationsanschluss gegen Überspannungen und -ströme infolge Blitzschlags

Diese Europäische Norm legt Mindestpegel für die Zerstörfestigkeit von Einrichtungen mit Telekommuni-kationsanschluss (-anschlüssen) gegenüber Überspannungen und -strömen fest. Diese Europäische Norm deckt Telekommunikationseinrichtungen, die in Kundenanlagen, wie in Bild 1 gezeigt, installiert sind, ab. Überspannungen und -ströme, die von dieser Europäischen Norm erfasst werden, sind Stoßspannungen und -ströme aufgrund von direkten Blitzeinschlägen oder indirekten Blitzeinwirkungen in Telekom-munikationsnetze. Überspannungen und -ströme, die nicht von dieser Europäischen Norm erfasst werden, resultieren aus: – kurzzeitiger Induktion von Wechselspannungen durch elektrische Starkstromanlagen (einschließlich denen der elektrischen Bahn); – Anstieg des Erdpotentials aufgrund von Kurzschlüssen (Fehlern) in Starkstromanlagen oder dem Schal¬ten von Lasten; – direkter Berührung von Telekommunikations- und Niederspannungs-Energieversorgungsleitungen. Diese Europäische Norm ist für die Verwendung durch (öffentliche oder private) Netzbetreiber und Herstel¬lern von Geräten bzw. Einrichtungen vorgesehen. Diese Europäische Norm gilt für Einrichtungen mit Telekommunikationsanschluss (-anschlüssen), die an äußere Leitun¬gen, z B. Leitungen, die außerhalb des Gebäudes des Kunden angesiedelt sind, an-geschlossen werden. Die Prüfungen sind Typprüfungen und, obwohl sie auf ein vollständiges System anwendbar sind, wird aner¬kannt, dass sie auf einzelne Geräte bzw. Einrichtungen während ihrer Entwicklung und ihres Entwurfs ange¬wendet werden können.

Exigences de tenue aux surtensions et aux surintensités dues à la foudre pour les matériels avec port de communication

La présente Norme Européenne spécifie le niveau minimal de tenue aux surtensions et aux surintensités des matériels avec port de communication. La présente Norme Européenne traite des matériels de communication installés chez les utilisateurs comme indiqué en Figure 1. Les surtensions et surintensités traitées dans cette Norme Européenne correspondent à des impacts directs ou indirects sur les lignes de communication. Les surtensions et surintensités non traitées dans cette Norme Européenne sont: – les inductions de courte durée dues à des tensions alternatives du réseau de puissance (y compris la traction électrique), – l‘élévation du potentiel de terre due à des défauts ou à des manœuvres, – les contacts directs entre lignes de communication et de puissance BT. La présente Norme Européenne est destinée à être utilisée par des opérateurs (publics ou privés) et par les fournisseurs de matériels. Cette Norme Européenne est applicable aux matériels équipés de ports de communication connectés à des conducteurs extérieurs, par exemple conducteur situé à l‘extérieur du bâtiment de l‘utilisateur. Les essais sont des essais de type et, bien qu’ils soient applicables à un ensemble complet, il est reconnu qu’ils peuvent être appliqués à des matériels individuels lors de leur conception et de leur développement.

Zahteve za odpornost opreme s telekomunikacijskim vhodom proti prenapetosti in nadtokovom zaradi delovanja strele

General Information

• Status: Withdrawn
• Publication Date: 21-Apr-2009
• ICS: 29.120.50 - Fuses and other overcurrent protection devices
• ICS: 91.120.40 - Lightning protection
• Technical Committee: CLC/TC 81X - Lightning protection
• Drafting Committee: IEC/TC 81 - IEC_TC_81
• Parallel Committee: IEC/TC 81 - IEC_TC_81
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 02-Aug-2017
• Ref Project: SIST EN 50468:2009 - Resistibility requirements to overvoltages and overcurrents due to lightning for equipment having telecommunication port

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2009
Zahteve za odpornost opreme s telekomunikacijskim vhodom proti prenapetosti in
nadtokovom zaradi delovanja strele
Resistibility requirements to overvoltages and overcurrents due to lightning for equipment
having telecommunication port
Anforderungen zur Zerstörfestigkeit von Einrichtungen mit
Telekommunikationsanschluss gegen Überspannungen und -ströme infolge Blitzschlags
Exigences de tenue aux surtensions et aux surintensités dues à la foudre pour les
matériels de communication avec port
Ta slovenski standard je istoveten z: EN 50468:2009
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
91.120.40 =DãþLWDSUHGVWUHOR Lightning protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50468
NORME EUROPÉENNE
April 2009
EUROPÄISCHE NORM
ICS 29.120.50; 91.120.40
English version
Resistibility requirements to overvoltages and overcurrents
due to lightning for equipment having telecommunication ports

Exigences de tenue  Anforderungen zur Zerstörfestigkeit
aux surtensions et aux surintensités von Einrichtungen
dues à la foudre pour les matériels mit Telekommunikationsanschluss
avec port de communication gegen Überspannungen
und -ströme infolge Blitzschlags

This European Standard was approved by CENELEC on 2009-02-01. 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 50468:2009 (fragment 60) E

Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 81X, Lightning
protection.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50468
on 2009-02-01.
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) 2010-02-01
– latest date by which the national standards conflicting

with the EN have to be withdrawn
(dow) 2012-02-01
__________
– 3 – EN 50468:2009
Contents
1 Sc op e . . 4
2 Normative references . 4
3 Terms, definitions and abbreviations . 5
4 Reference configuration . 5
5 Resistibility requirements . 6
6 Resistibility test requirements . 6
6.1 For ports connected to balanced copper cabling . 7
6.1.1 Lightning test conditions for ports connected to external balanced
copper cabling . 7
6.2 For ports connected to external d.c or a.c dedicated power feeding cables . 8
6.2.1 Lightning test conditions for ports connected to external d.c or a.c
dedicated power feeding cables . 8
6.3 For mains power ports . 8
6.3.1 Test conditions for mains power ports . 8
Annex A (informative) ITU-T publications (K-recommendations) with relation to TE . 10
Bibliography . 11

Figures
Figure 1 – Equipment with telecommunication ports installed at customers premises . 6
Figure 2 – TE configurations . . 9
Figure A.1 – ITU-T publications (K-recommendations) with relation to TE . 10

1 Scope
This European Standard specifies the minimum level of resistibility of equipment having
telecommunication port(s) to overvoltages and overcurrents.
This European Standard covers telecommunication equipment installed at customer premises as
shown in Figure 1.
Overvoltages or overcurrents covered by this European Standard are surges due to direct or indirect
lightning on the telecommunication line plant.
Overvoltages or overcurrent not covered by this European Standard are
– short-term induction of alternating voltages from electric power systems (including electrified
railway),
– earth potential rise due to power faults or load switching,
– direct contacts between telecommunication lines and low voltage power lines.
This European Standard is intended for use by network (public/private) operators and the equipment
manufacturers.
This European Standard applies to equipment having telecommunication port(s) connected to external
conductors, i.e. conductor located outside the customer’s building.
The tests are type tests and, although they are applicable to a complete system, it is recognised that
they may be applied to individual items of equipment during development and design work.
2 Normative references
The following referenced documents are indispensable for the application 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.
CLC/TR 50450:2006, Resistibility requirements for equipment having (a) telecommunication port(s)
EN 60950-1:2006, Information technology equipment – Safety – Part 1: General requirements
(IEC 60950-1:2005, mod.)
IEC 60050-701:1988, International Electrotechnical Vocabulary (IEV) – Chapter 701:
Telecommunications, channels and networks
ITU-T Recommendation K.21, Resistibility of telecommunication equipment installed in customer
premises to overvoltages and overcurrents
ITU-T Recommendation K.44, Resistibility tests for telecommunication equipment exposed to
overvoltages and overcurrents – Basic Recommendation

– 5 – EN 50468:2009
3 Terms, definitions and abbreviations
For the purposes of this document, the following terms and definitions apply, in addition with those
definitions and abbreviations in ITU-T recommendation K.44.
3.1
resistibility
ability of telecommunication equipment or installations to withstand, in general without damage, the
effects of overvoltages or overcurrents, up to a certain, specified extent, and in accordance with a
specified criterion
[ITU-T K.44]
NOTE Two acceptance criteria are recognized:
Criterion A – Equipment shall withstand the test without damage or other disturbance (such as corruption of software or
misoperation of fault-protection facilities) and shall operate properly within the specified limits after the test. It is not required to
operate correctly during the test.
Criterion B – A fire hazard shall not arise in the equipment as a result of the tests. Any damage, if it occurs, shall be confined to
a small part of the equipment.
3.2
telecommunication port
port which is intended to be connected to telecommunication networks, Local Area Networks (e.g.
Ethernet, Token Ring) and similar networks, either through physical connection (cable optical fibre) or
radio connection
[CLC/TR 50450]
NOTE In the latter case the antenna port is the telecommunication port.
3.3
external ports
particular interface of the specified equipment, which is directly connected to metallic conductors
extending beyond the building or shelter boundary
[ITU-T K.44]
3.4
internal ports
particular interface of the specified equipment which is connected to metallic conductors which do not
leave the building or shelter. These interfaces connect to cables which interconnect system blocks
[ITU-T K.44]
3.5
telecommunica
...