Fixed installations for railway applications - Electrical safety, earthing and the return circuit. Provisions against the effects of stray currents caused by DC traction systems (+A1:2025)

BS EN 50122-2:2022

British Standards Institution
Fixed installations for railway applications - Electrical safety, earthing and the return circuit. Provisions against the effects of stray currents caused by DC traction systems (+A1:2025) Download document

Document Status

Current

Supplement

Mechanical & Electrical Supplement

Series

BS EN

Abstract

Gives specific requirements for the protective provisions to minimise the effects of stray currents from the operation of DC electric traction power supply systems. Applicable to all metallic fixed installations which form part of the traction system, and other metallic components located in the earth which could carry stray currents from operation of the railway system.

History

Supersedes BS EN 50122-2:2022. Amendment dated 31 August 2025 - Implementation of CENELEC amendment A1:2025.

ISBN

9780539315905

Subjects

  • Electric/electronic safety related systems
  • Building services
  • Electrical services

Publisher History

With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.

Information

NBS

NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.

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