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  • BSI
    BS EN 50122-2:2022 - TC Tracked Changes. Railway applications. Fixed installations. Electrical safety, earthing and the return circuit - Provisions against the effects of stray currents caused by DC traction systems
    Edition: 2023
    $620.36
    / user per year

Description of BS EN 50122-2:2022 - TC 2023

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.

Standard NumberBS EN 50122-2:2022 - TC
TitleTracked Changes. Railway applications. Fixed installations. Electrical safety, earthing and the return circuit - Provisions against the effects of stray currents caused by DC traction systems
StatusRevision Underway
Publication Date2023-01-23
DescriptorsTraction-current-collecting devices, Direct current, Railway equipment, Protected electrical equipment, Electric power systems, Rail safety, Electrical measurement, Voltage measurement, Railway track, Electrical conductance, Railway electric traction equipment, Testing conditions, Corrosion environments, Electrical safety, Corrosion protection, Installation, Electrical protection equipment, Railway fixed equipment, Electric current, Performance, Current-collecting equipment
ICS29.120.50 Fuses and other overcurrent protection devices, 29.280 Electric traction equipment
CommitteeGEL/9/3
ISBN978 0 539 25577 5
PublisherBSI
Pages88

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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