EN 50122-1:2022

Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock

This document specifies requirements for the protective provisions relating to electrical safety in fixed installations associated with AC and/or DC traction systems and to any installations that can be endangered by the electric traction power supply system. This also includes requirements applicable to vehicles on electrified lines. It also applies to all aspects of fixed installations which are necessary to ensure electrical safety during maintenance work within electric traction power supply systems. This document applies to new electric traction power supply systems and major revisions to electric traction power supply systems for: a) railways; b) guided mass transport systems such as 1) tramways, 2) elevated and underground railways, 3) mountain railways, 4) trolleybus systems, 5) electric traction power supply systems for road vehicles, which use an overhead contact line system, and 6) magnetically levitated systems, which use a contact line system; 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 or via transformers from the contact line system and are not endangered by the electric traction power supply system, c) suspended cable cars, d) funicular railways, e) existing vehicles. This document does not specify working rules for maintenance. The requirements within this document related to protection against electric shock are applicable to persons only.

Bahnanwendungen - Ortsfeste Anlagen - Elektrische Sicherheit, Erdung und Rückleitung - Teil 1: Schutzmaßnahmen gegen elektrischen Schlag

This European Standard specifies requirements for the protective provisions relating to electrical safety in fixed installations associated with AC and/or DC traction systems and to any installations that can be endangered by the traction power supply system. This is including as well the requirements which are present at the interface with the live parts on the outside of the vehicles. It also applies to all aspects of fixed installations that are necessary to ensure electrical safety during maintenance work within electric traction systems. This European Standard applies to all new lines and to all major revisions to existing lines for the following electric traction systems: a) railways; b) guided mass transport systems such as 1) tramways, 2) elevated and underground railways, 3) mountain railways, 4) trolleybus systems 5) electric traction supplies for road vehicles, which use an overhead contact line system and 6) magnetically levitated systems, which use a contact line system; c) material transportation systems. This European Standard does not apply to d) mine traction systems in underground mines, e) cranes, transportable platforms and similar transportation equipment on rails, temporary structures (e.g. exhibition structures) in so far as these are not supplied directly or via transformers from the contact line system and are not endangered by the traction power supply system, f) suspended cable cars, g) funicular railways. This European Standard does not specify working rules for maintenance.

Applications ferroviaires - Installations fixes - Sécurité électrique, mise à la terre et circuit de retour - Partie 1: Mesures de protection contre les chocs électriques

Le présent document spécifie les exigences relatives aux dispositions de protection concernant la sécurité électrique des installations fixes associées à des systèmes de traction en courant alternatif et/ou continu et dans toutes les installations susceptibles d'être affectées par le système d'alimentation électrique de trac-tion. Il couvre également les exigences applicables aux véhicules opérant sur des voies électrifiées. Le présent document s'applique également à tous les aspects des installations fixes, qui sont nécessaires pour assurer la sécurité électrique pendant les travaux de maintenance réalisés au sein des systèmes d'ali-mentation électrique de traction. Le présent document s'applique aux nouveaux systèmes d'alimentation électrique de traction et aux révi-sions majeures des systèmes d'alimentation électrique de traction pour : 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 de trolleybus ; 5) les systèmes d'alimentation électrique de traction des véhicules routiers, qui utilisent un système de ligne aérienne de contact ; et 6) les systèmes à sustentation magnétique, qui utilisent un système de ligne de contact ; c) les systèmes de transport de matériaux. Le présent document ne s'applique pas aux : a) systèmes d’alimentation électrique de traction 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 ou par des transformateurs, ni affectés par le système d'alimentation électrique de traction ; c) téléphériques, télécabines ; d) funiculaires à câbles, e) véhicules existants. Le présent document ne spécifie pas les règles de travail pour la maintenance. Les exigences du présent document relaives à la protection contre les chocs électriques sont applicables aux personnes physiques uniquement.

Železniške naprave - Fiksni postroji - Električna varnost, ozemljitev in povratni tokokrog - 1. del: Zaščitni ukrepi proti električnemu udaru

General Information

• Status: Published
• Publication Date: 01-Sep-2022
• 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: 13-Apr-2021
• 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
• Mandate: M/591 - Standardisation request to the European Committee for Standardisation and the European Committee for Electrotechnical Standardisation as regards railway products in support of Directive (EU) 2016/797
• Ref Project: SIST EN 50122-1:2022 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock

Relations

• Replaces: EN 50122-1:2011 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
• Effective Date: 23-Jan-2023
• Replaces: EN 50122-1:2011/AC:2012 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
• Effective Date: 06-Sep-2022
• Replaces: EN 50122-1:2011/AC:2012 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
• Effective Date: 06-Sep-2022
• Replaces: EN 50122-1:2011/A1:2011 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
• Effective Date: 06-Sep-2022
• Replaces: EN 50122-1:2011/A3:2016 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
• Effective Date: 17-Sep-2018
• Replaces: EN 50122-1:2011/A2:2016 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
• Effective Date: 17-Sep-2018
• Replaces: EN 50122-1:2011/A4:2017 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
• Effective Date: 17-Sep-2018
• Amended By: EN 50122-1:2022/prA1:2024 - Fixed installations for railway applications - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
• Effective Date: 14-Feb-2023
• Revised: EN 50122-1:2011/AC:2012 - Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
• Effective Date: 17-Sep-2018

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2022
Nadomešča:
SIST EN 50122-1:2011
SIST EN 50122-1:2011/A1:2011
SIST EN 50122-1:2011/A2:2017
SIST EN 50122-1:2011/A3:2017
SIST EN 50122-1:2011/A4:2017
SIST EN 50122-1:2011/AC:2012
SIST EN 50122-1:2011/AC:2013
Železniške naprave - Fiksni postroji - Električna varnost, ozemljitev in povratni
tokokrog - 1. del: Zaščitni ukrepi proti električnemu udaru
Railway applications - Fixed installations - Electrical safety, earthing and the return circuit
- Part 1: Protective provisions against electric shock
Bahnanwendungen - Ortsfeste Anlagen - Elektrische Sicherheit, Erdung und Rückleitung
- Teil 1: Schutzmaßnahmen gegen elektrischen Schlag
Applications ferroviaires - Installations fixes - Sécurité électrique, mise à la terre et circuit
de retour - Partie 1: Mesures de protection contre les chocs électriques
Ta slovenski standard je istoveten z: EN 50122-1:2022
ICS:
13.260 Varstvo pred električnim Protection against electric
udarom. Delo pod napetostjo shock. Live working
29.280 Električna vlečna oprema Electric traction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50122-1
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2022
ICS 29.280 Supersedes EN 50122-1:2011; EN 50122-
1:2011/A1:2011; EN 50122-1:2011/AC:2012; EN 50122-
1:2011/A2:2016; EN 50122-1:2011/A3:2016; EN 50122-
1:2011/A4:2017
English Version
Railway applications - Fixed installations - Electrical safety,
earthing and the return circuit - Part 1: Protective provisions
against electric shock
Applications ferroviaires - Installations fixes - Sécurité Bahnanwendungen - Ortsfeste Anlagen - Elektrische
électrique, mise à la terre et circuit de retour - Partie 1: Sicherheit, Erdung und Rückleitung - Teil 1:
Mesures de protection contre les chocs électriques Schutzmaßnahmen gegen elektrischen Schlag
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 50122-1:2022 E
Contents Page
European foreword . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 10
3.1 Electrical safety and hazards . 10
3.2 Earthing and equipotential bonding . 12
3.3 Return circuit. 14
3.4 Electric traction power supply system . 16
3.5 Contact line . 17
3.6 Corrosion and corrosion protection . 20
3.7 Current collection . 20
3.8 Residual current devices . 21
3.9 General terms . 21
4 Contact line zone and current collector zone . 24
4.1 Overhead contact line . 24
4.2 Ground level conductor rail . 27
4.3 Trolleybuses and road vehicles using an overhead contact line . 27
4.4 Limitation of the zones . 28
5 Protective provisions against direct contact . 29
5.1 Preconditions . 29
5.1.1 General . 29
5.1.2 Design procedure . 29
5.1.3 Electrical clearances. 30
5.1.4 Standing surface . 31
5.2 Protection by clearance . 32
5.2.1 Calculation method for protection by clearance . 32
5.2.2 Dimensions of clearances . 33
5.2.3 Clearances for working persons . 35
5.2.4 Warning signs . 35
5.2.5 Minimum height of wires of an overhead contact line system above traffic areas . 36
5.2.6 Clearances above standing surfaces on vehicles . 36
5.2.7 Feeders above loading roads . 36
5.2.8 Clearance between live parts of overhead contact line systems and trees and bushes . 36
5.3 Protection by electrically protective obstacles . 36
5.3.1 General . 36
5.3.2 Common requirements for electrically protective obstacles . 37
5.3.3 Methods for determining reach . 38
5.3.4 Requirements for electrically protective obstacles . 40
5.3.5 Specific requirements for electrically protective obstacles in restricted areas . 46
5.3.6 Anti climbing provisions . 47
5.4 Protection against direct contact with live parts mounted on vehicles . 47
5.5 Protective provisions allowing working under live conditions . 48
5.5.1 General . 48
5.5.2 Overhead contact lines for railways beneath structures . 49
5.5.3 Overhead contact lines for trolley busses and electric road vehicles beneath structures . 49
5.6 Specific protective provisions against electric shock in ground level conductor rail systems . 51
5.6.1 Location of conductor rail at platforms . 51
5.6.2 Exceptions . 51
5.6.3 Protection provisions in workshops and depots . 51
5.6.4 Protective boarding for ground level conductor rails in restricted areas . 52
5.6.5 Requirements for top contact ground level conductor rails in public areas . 52
5.6.6 Requirements for top contact ground level conductor rails in restricted areas . 52
5.7 Specific protective provisions against electric shock in systems in which the wheels of the
vehicles are not used for return circuit . 55
5.7.1 General. 55
5.7.2 Railway systems . 55
5.7.3 Trolleybus systems and systems for electric road vehicles . 55
6 Protective provisions against indirect contact and non-galvanic coupling . 56
6.1 General . 56
6.2 Protective provisions for exposed-conductive-parts . 56
6.2.1 AC railways . 56
6.2.2 DC railways . 57
6.2.3 Exceptions for low voltage electric traction power supply systems . 57
6.2.4 Stays of non-conductive masts . 58
6.3 Protective provisions for wholly or partly conductive structures in the overhead contact line
zone or the current collector zone . 58
6.3.1 Protective provisions by means of connection to the return circuit . 58
6.3.2 Exceptions for small wholly and partly conductive parts . 59
6.3.3 Exceptions for temporarily stored parts close to the rails . 59
6.3.4 Protective provisions preventing contact between conductive parts and live parts . 59
6.3.5 Protective provisions by means of bare conductive parts connected to the return circuit . 60
6.3.6 Protective provisions by automatic disconnection of supply . 60
6.4 Parts which can become hazardous due to inductive or capacitive coupling . 60
7 Protective provisions for low voltage non-traction power supply systems . 60
7.1 General . 60
7.2 Protective provisions for electrical installations in the overhead contact line zone or the
current collector zone . 61
7.2.1 Equipment of protection Class I . 61
7.2.2 Equipment of protection Class II .
...