EN 50122-2:2022

Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 2: Provisions against the effects of stray currents caused by DC traction systems

This document specifies requirements for protective provisions against the effects of stray currents, which result from the operation of DC electric traction power supply systems. As several decades' experience has not shown evident corrosion effects from AC electric traction power supply systems, this document only deals with stray currents flowing from a DC electric traction power supply system. This document applies to all metallic fixed installations which form part of the traction system, and also to any other metallic components located in any position in the earth, which can carry stray currents resulting from the operation of the railway system. This document applies to all new DC lines and to all major revisions to existing DC lines. The principles can also be applied to existing electrified transportation systems where it is necessary to consider the effects of stray currents. This document does not specify working rules for maintenance but provides design requirements to allow maintenance. The range of application includes: a) railways, b) guided mass transport systems such as: 1) tramways, 2) elevated and underground railways, 3) mountain railways, 4) magnetically levitated systems, which use a contact line system, and 5) trolleybus systems, c) material transportation systems. This document does not apply to a) electric traction power supply systems in underground mines, b) cranes, transportable platforms and similar transportation equipment on rails, temporary structures (e.g. exhibition structures) in so far as these are not supplied directly from the contact line system and are not endangered by the electric traction power supply system, c) suspended cable cars, d) funicular railways.

Bahnanwendungen - Ortsfeste Anlagen - Elektrische Sicherheit, Erdung und Rückleitung - Teil 2: Schutzmaßnahmen gegen Streustromwirkungen durch Gleichstrombahnen

Applications ferroviaires - Installations fixes - Sécurité électrique, mise à la terre et circuit de retour - Partie 2: Mesures de protection contre les effets des courants vagabonds issus de la traction électrique à courant continu

Le présent document spécifie les exigences relatives aux dispositions de protection contre les effets des courants vagabonds dus au fonctionnement des systèmes d’alimentation de traction électrique à courant continu. Plusieurs décennies d'expérience n'ayant pas démontré d'effets corrosifs évidents dus aux systèmes d'ali-mentation de traction électrique à courant alternatif, le présent document traite uniquement des courants va-gabonds issus des systèmes d'alimentation de traction électrique à courant continu. Le présent document s'applique à toutes les installations fixes métalliques qui font partie du système de traction ainsi qu'à tout autre composant métallique se trouvant dans le sol, quelle que soit sa position, et qui peut transporter des courants vagabonds issus de l'exploitation du réseau ferroviaire. Le présent document s'applique à l'ensemble des lignes nouvelles à courant continu, ainsi qu'aux rénova-tions majeures des lignes à courant continu existantes. Ces principes peuvent également s'appliquer aux systèmes de transport électrifiés existants lorsqu'il est nécessaire de tenir compte des effets des courants vagabonds. Le présent document ne spécifie pas les règles de travail pour la maintenance, mais définit des exigences de conception pour permettre la maintenance. Le présent document s'applique aux applications suivantes : a) les réseaux ferroviaires ; b) les réseaux de transport en commun guidés tels que : 1) les tramways ; 2) les voies ferroviaires aériennes et souterraines ; 3) les voies ferroviaires de montagne ; 4) les systèmes à sustentation magnétique, qui utilisent un système de ligne de contact, et 5) les systèmes de trolleybus ; c) les systèmes de transport de matériaux. Le présent document ne s'applique pas aux : a) systèmes d’alimentation de traction électrique des mines souterraines ; b) grues, plateformes transportables et autres matériels de transport similaires sur rails, structures tempo-raires (dans les foires et expositions, par exemple) lorsqu'ils ne sont pas alimentés par les lignes aé-riennes de contact, directement, ni affectés par le système d'alimentation électrique de traction ; c) téléphériques, télécabines ; d) funiculaires à câbles.

Železniške naprave - Fiksni postroji - Električna varnost, ozemljitev in povratni tokokrog - 2. del: Zaščitni ukrepi proti učinkom blodečih tokov, ki jih povzročajo enosmerni sistemi vleke

General Information

• Status: Published
• Publication Date: 01-Sep-2022
• ICS: 29.120.50 - Fuses and other overcurrent protection devices
• ICS: 29.280 - Electric traction equipment
• Technical Committee: CLC/TC 9X - Electrical and electronic applications for railways
• Drafting Committee: CLC/SC 9XC - Electric supply and earthing systems for public transport equipment and ancillary apparatus (fixed i
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 02-Sep-2022
• Due Date: 12-Jan-2022
• Completion Date: 02-Sep-2022
• Directive: 2008/57/EC - Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)
• Directive: 2016/797/EU - Directive (EU) 2016/797 of the European Parliament and of the Council of 11 May 2016 on the interoperability of the rail system within the European Union (Text with EEA relevance)
• Mandate: M/483 - Mandate for programming and standardisation addressed to the European standardisation bodies under directive 2008/57/EC in the field of the interoperability of the rail system within the European Union
• Ref Project: SIST EN 50122-2:2022 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 2: Provisions against the effects of stray currents caused by DC traction systems

Relations

• Replaces: EN 50122-2:2010 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 2: Provisions against the effects of stray currents caused by d.c. traction systems
• Effective Date: 06-Sep-2022
• Revised: EN 50122-2:2010 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 2: Provisions against the effects of stray currents caused by d.c. traction systems
• Effective Date: 17-Sep-2018

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50122-2:2022
01-december-2022
Nadomešča:
SIST EN 50122-2:2010
Železniške naprave - Fiksni postroji - Električna varnost, ozemljitev in povratni
tokokrog - 2. del: Zaščitni ukrepi proti učinkom blodečih tokov, ki jih povzročajo
enosmerni sistemi vleke
Railway applications - Fixed installations - Electrical safety, earthing and the return circuit
- Part 2: Provisions against the effects of stray currents caused by DC traction systems
Bahnanwendungen - Ortsfeste Anlagen - Elektrische Sicherheit, Erdung und Rückleitung
- Teil 2: Schutzmaßnahmen gegen Streustromwirkungen durch Gleichstrombahnen
Applications ferroviaires - Installations fixes - Sécurité électrique, mise à la terre et circuit
de retour - Partie 2: Mesures de protection contre les effets des courants vagabonds
issus de la traction électrique à courant continu
Ta slovenski standard je istoveten z: EN 50122-2:2022
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
29.280 Električna vlečna oprema Electric traction equipment
SIST EN 50122-2:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50122-2:2022

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SIST EN 50122-2:2022


EUROPEAN STANDARD EN 50122-2

NORME EUROPÉENNE

EUROPÄISCHE NORM September 2022
ICS 29.120.50; 29.280 Supersedes EN 50122-2:2010
English Version
Railway applications - Fixed installations - Electrical safety,
earthing and the return circuit - Part 2: Provisions against the
effects of stray currents caused by DC traction systems
Applications ferroviaires - Installations fixes - Sécurité Bahnanwendungen - Ortsfeste Anlagen - Elektrische
électrique, mise à la terre et circuit de retour - Partie 2: Sicherheit, Erdung und Rückleitung - Teil 2:
Mesures de protection contre les effets des courants Schutzmaßnahmen gegen Streustromwirkungen durch
vagabonds issus de la traction électrique à courant continu Gleichstrombahnen
This European Standard was approved by CENELEC on 2022-07-25. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50122-2:2022 E

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SIST EN 50122-2:2022
EN 50122-2:2022 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Identification of hazards and risks . 6
5 Criteria for stray current assessment and acceptance . 7
5.1 General . 7
5.2 Criteria for the protection of the tracks .
...