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  • BSI
    20/30430760 DC BS 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 DC traction systems
    Edition: 2020
    $44.66
    / user per year

Description of 20/30430760 DC 2020

This document specifies requirements for protective provisions against the effects of stray currents, which result from the operation of DC traction systems. As several decades' experience has not shown evident corrosion effects from AC traction systems and ac-tual investigations are not completed, this document only deals with stray currents flowing from a DC trac-tion 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) trolleybus systems, and 5) magnetically levitated systems, which use a contact line system, c) material transportation systems. This document 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.

Standard Number20/30430760 DC
TitleBS 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 DC traction systems
StatusDefinitive
Publication Date2020-11-27
Identical National Standard OfprEN 50122-2
DescriptorsElectrical safety, Performance, Railway equipment, Railway fixed equipment, Corrosion protection, Current-collecting equipment, Rail safety, Testing conditions, Electrical measurement, Installation, Railway track, Direct current, Electric current, Protected electrical equipment, Voltage measurement, Electrical conductance, Traction-current-collecting devices, Railway electric traction equipment, Electric power systems, Corrosion environments, Electrical protection equipment
ICS29.280 Electric traction equipment, 29.120.50 Fuses and other overcurrent protection devices
CommitteeGEL/9/3
PublisherBSI
Pages32

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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