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CEI EN 50122-2

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

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Organization: CEI
Publication Date: 1 February 2012
Status: active
Page Count: 60
ICS Code (Fuses and other overcurrent protection devices): 29.120.50
ICS Code (Electric traction equipment): 29.280
scope:

This European Standard specifies requirements for protective provisions against the effects of stray currents, which result from the operation of d.c. traction systems.

As experience for several decades has not shown evident corrosion effects from a.c. traction systems and actual investigations are not completed, this European Standard only deals with stray currents flowing from a d.c. traction system.

This European Standard 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 European Standard applies to all new d.c. lines and to all major revisions to existing d.c. lines. The principles may also be applied to existing electrified transportation systems where it is necessary to consider the effects of stray currents.

It 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) 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 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.

Document History

CEI EN 50122-2
February 1, 2012
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
This European Standard specifies requirements for protective provisions against the effects of stray currents, which result from the operation of d.c. traction systems. As experience for several...
October 1, 2011
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
La presente Norma specifica i requisiti per i provvedimenti di protezione contro gli effetti delle correnti vaganti che si possono presentare nell'esercizio dei sistemi di trazione a corrente...
October 1, 1999
Railway applications - Fixed installations - Part 2: Protective provisions against the effects of stray currents caused by d.c. traction systems
La norma specifica i requisiti per i provvedimenti di protezione contro gli effetti delle correnti vaganti che possono risultare nei sistemi di trazione a corrente continua. Essa si applica a tutte...

References

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