EN 50122-1:2011
(Main)Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock
This European Standard specifies requirements for the protective provisions relating to electrical safety in fixed installations associated with a.c. and/or d.c. traction systems and to any installations that can be endangered by the traction power supply system. 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, and 5) 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.
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
Železniške naprave - Stabilne naprave električne vleke - Električna varnost, ozemljitev in povezovanje - 1. del: Zaščitni ukrepi proti električnemu udaru
Ta evropski standard določa zahteve za zaščitne ukrepe v zvezi z električno varnostjo pri stabilnih napravah električne vleke na izmenični in/ali enosmerni tok in pri vseh inštalacijah, ki jih lahko ogroža napajanje sistema za vleko. Velja tudi za vse vidike stabilnih naprav, potrebnih za zagotavljanje električne varnosti med vzdrževalnim delom v električnih sistemih vleke. Ta evropski standard velja za vse nove vode in za vse večje prenove obstoječih vodov za naslednje električne sisteme vleke: a) železnice; b) vodene sisteme množičnega prevoza, kot so 1) tramvajske proge, 2) nadzemne in podzemne železnice, 3) gorske železnice, 4) trolejbusni sistemi in 5) sistemi z magnetnim lebdenjem, ki uporabljajo sistem voznih vodov, c) sisteme za prevoz materiala. Ta evropski standard ne velja za: d) rudniške vlečne sisteme v podzemnih rudnikih; e) žerjave, prenosne platforme in podobno opremo za prevoz po tirih, začasne strukture (npr. razstavne strukture), če niso napajane neposredno ali preko transformatorjev s sistema voznih vodov in jih ne ogroža napajanje sistema za vleko; f) viseče kabinske žičnice; g) vzpenjače. Ta evropski standard ne določa delovnih pravil za vzdrževanje.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2011
1DGRPHãþD
SIST EN 50122-1:1998
äHOH]QLãNHQDSUDYH6WDELOQHQDSUDYHHOHNWULþQHYOHNH(OHNWULþQDYDUQRVW
R]HPOMLWHYLQSRYH]RYDQMHGHO =DãþLWQLXNUHSLSURWLHOHNWULþQHPXXGDUX
Railway applications - Fixed installations - Electrical safety, earthing and bonding - Part
1: Protective provisions against electric shock
Bahnanwendungen - Ortsfeste Anlagen - Elektrische Sicherheit, Erdung und
Rückstromführung - Teil 1: Schutzmaßnahmen gegen elektrischen Schlag
Applications ferroviaires - Installations fixes - Sécurité électrique, dispositions pour les
courants de retour et mise à la terre - Partie 1: Mesures de protection contres les chocs
électriques
Ta slovenski standard je istoveten z: EN 50122-1:2011
ICS:
13.260 9DUVWYRSUHGHOHNWULþQLP Protection against electric
XGDURP'HORSRGQDSHWRVWMR shock. Live working
29.280 (OHNWULþQDYOHþQDRSUHPD Electric traction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 50122-1
NORME EUROPÉENNE
January 2011
EUROPÄISCHE NORM
ICS 29.280 Supersedes EN 50122-1:1997
English version
Railway applications -
Fixed installations -
Electrical safety, earthing and the return circuit -
Part 1: Protective provisions against electric shock
Applications ferroviaires - Bahnanwendungen -
Installations fixes - Ortsfeste Anlagen -
Sécurité électrique, mise à la terre et Elektrische Sicherheit, Erdung und
circuit de retour - Rückleitung -
Partie 1: Mesures de protection contre les Teil 1: Schutzmaßnahmen gegen
chocs électriques elektrischen Schlag
This European Standard was approved by CENELEC on 2010-11-16. 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 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, Croatia, 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
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50122-1:2011 E
Foreword
This European Standard was prepared by SC 9XC, Electric supply and earthing systems for public transport
equipment and ancillary apparatus (Fixed installations), of Technical Committee CENELEC TC 9X, Electrical
and electronic applications for railways. It was submitted to the formal vote and was approved by CENELEC
as EN 50122-1 on 2010-11-16.
This document supersedes EN 50122-1:1997.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights.
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) 2011-11-16
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-11-16
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directives 96/48/EC (HSR), 2001/16/EC (CONRAIL) and 2008/57/EC (RAIL). See Annex ZZ.
__________
– 3 – EN 50122-1:2011
Contents
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
3.1 Electrical safety and hazards . 8
3.2 Earthing and equipotential bonding . 10
3.3 Return circuit . 11
3.4 Electric traction system . 13
3.5 Contact line . 14
3.6 Corrosion and corrosion protection . 16
3.7 Current collection . 16
3.8 Residual current devices . 16
3.9 General terms. 17
4 Contact line zone and current collector zone . 17
4.1 Overhead contact line systems . 17
4.2 Conductor rail systems . 20
4.3 Trolleybus systems . 20
5 Protective provisions against direct contact . 22
5.1 General . 22
5.2 Protection by clearance . 22
5.3 Protection by obstacles . 25
5.4 Protective provisions for working under live conditions . 33
5.5 Specific protective provisions against electric shock in conductor rail systems . 36
5.6 Specific protective provisions against electric shock in systems in which the wheels of
the vehicles are not used for return circuit . 40
6 Protective provisions against indirect contact and impermissible rail potential . 41
6.1 Protective provisions against indirect contact . 41
6.2 Protective provisions for exposed conductive parts within the contact line zone or the
current collector zone . 42
6.3 Protective provisions for wholly or partly conductive structures . 43
6.4 Limitation of rail potentials . 45
7 Protective provisions for low voltage non traction power supplies . 45
7.1 General . 45
7.2 Related provisions . 46
7.3 Protective provisions for electrical installations in the overhead contact line zone or the
current collector zone . 46
7.4 Protective provisions for installations which are endangered by the traction power
supply return circuit . 46
8 Protective provisions where track systems, which are utilized for carrying traction
return current, or/and contact line systems pass through hazardous zones . 52
8.1 General . 52
8.2 Equipotential bonding . 53
8.3 Parallel pipework . 53
8.4 Insulating joints. 53
8.5 Surge arrester . 54
8.6 Contact line of loading sidings . 54
9 Limits for touch voltage and protection against the danger of rail potential . 54
9.1 General . 54
9.2 A.C. traction systems . 55
9.3 D.C. traction systems . 59
10 Additional protective provisions . 61
10.1 Traction substations and traction switching stations . 61
10.2 Cables . 61
10.3 Return circuit connections and earthing conductors . 61
10.4 Removing of decommissioned overhead contact lines . 62
10.5 Means of achieving safe isolation between sections . 63
Annex A (informative) Typical obstacles . 64
Annex B (normative) Warning sign . 66
Annex C (informative) Guiding values for rail potential gradient . 67
C.1 A.C. traction systems . 67
C.2 D.C. traction systems . 68
Annex D (informative) Effective touch voltage and body voltage with respect to the body
current . 69
D.1 Preconditions for the calculation . 69
D.2 Impedances . 69
D.3 Body current and related body voltage . 72
Annex E (normative) Measurement methods for effective touch voltages . 75
Annex F (normative) The use of voltage-limiting devices . 76
F.1 General . 76
F.2 Types . 76
F.3 Technical requirements . 76
Annex G (normative) Special national conditions . 77
Annex H (normative) A-deviations . 80
Annex ZZ (informative) Coverage of Essential Requirements of EC Directives. 80
Bibliography .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.