Fixed installations for railway applications - Electrical safety, earthing and the return circuit. Mutual Interaction of AC and DC traction systems (+A1:2025)

BS EN 50122-3:2022

British Standards Institution
Fixed installations for railway applications - Electrical safety, earthing and the return circuit. Mutual Interaction of AC and 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 relative to electrical safety in fixed installations, when it's likely that hazardous voltages or currents will be a risk to people or equipment, from the mutual interaction of AC and DC electric power supply traction systems. Also applicable to maintenance work within electric power supply traction systems.

History

Supersedes BS EN 50122-3:2022. Amendment dated 31 August 2025 - Implementation of CENELEC amendment A1:2025.

ISBN

9780539315912

Subjects

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

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.

Accuris

We connect trusted knowledge to customers' workflows – mitigating risk, increasing efficiency and accelerating innovation For more than 60 years, leading R&D and engineering-intensive organizations have relied on us to achieve on-time, on-budget delivery of complex projects and new products. We deliver an unparalleled combination of technical content and Artificial Intelligence (AI) technologies to surface answers from the vast universe of technical knowledge, both inside and outside the organization. In a single interface, we connect the dots between information scattered across many different sources, allowing technical professionals to make better, more informed decisions faster.