BS EN 50122-2:2022+A1:2025 - Fixed Installations for Railway Applications

Electrical Safety, Earthing, and the Return Circuit

Introducing the BS EN 50122-2:2022+A1:2025, a comprehensive standard designed to ensure the utmost safety and efficiency in railway applications. This standard is pivotal for professionals in the railway industry, focusing on electrical safety, earthing, and the return circuit, with specific provisions against the effects of stray currents caused by DC traction systems.

Key Features and Benefits

• Standard Number: BS EN 50122-2:2022+A1:2025
• Pages: 36
• Release Date: August 21, 2025
• ISBN: 978 0 539 31590 5
• Status: Standard

This standard is essential for ensuring that railway systems are not only efficient but also safe for both operators and passengers. It addresses the critical issue of stray currents, which can pose significant risks if not properly managed. By adhering to the guidelines set forth in this standard, railway operators can mitigate these risks effectively.

Comprehensive Coverage

The BS EN 50122-2:2022+A1:2025 provides detailed guidance on:

• Electrical safety measures to protect personnel and equipment.
• Earthing techniques to ensure the safe dissipation of electrical currents.
• Design and implementation of return circuits to minimize the impact of stray currents.

With 36 pages of in-depth information, this standard is a vital resource for engineers, safety officers, and anyone involved in the design, construction, and maintenance of railway systems. It offers a clear framework for implementing safety measures that comply with the latest industry regulations.

Why Choose BS EN 50122-2:2022+A1:2025?

Choosing this standard means prioritizing safety and efficiency in your railway operations. The provisions against stray currents are particularly crucial for DC traction systems, which are commonly used in modern railways. Stray currents can lead to corrosion, equipment damage, and even safety hazards if not properly controlled. This standard provides the necessary guidelines to prevent such issues, ensuring the longevity and reliability of your railway infrastructure.

Stay Ahead with the Latest Updates

The inclusion of the amendment A1:2025 ensures that you are equipped with the most current information and practices. Staying updated with the latest standards is essential for maintaining compliance and ensuring the highest levels of safety and performance in your railway systems.

Who Should Use This Standard?

This standard is indispensable for:

• Railway engineers and designers
• Safety officers and compliance managers
• Maintenance and operations personnel
• Regulatory bodies and inspectors

By integrating the guidelines of BS EN 50122-2:2022+A1:2025 into your operations, you can enhance the safety and reliability of your railway systems, protect your investment, and ensure the well-being of your passengers and staff.

Conclusion

The BS EN 50122-2:2022+A1:2025 is more than just a standard; it is a commitment to safety, efficiency, and excellence in railway applications. With its comprehensive coverage and up-to-date guidelines, it is an invaluable tool for anyone involved in the railway industry. Ensure your systems are safe, reliable, and compliant by adopting this essential standard today.

BS EN 50122-2:2022+A1:2025

This standard BS EN 50122-2:2022+A1:2025 Fixed installations for railway applications. Electrical safety, earthing and the return circuit is classified in these ICS categories:

• 29.120.50 Fuses and other overcurrent protection devices
• 29.280 Electric traction equipment

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.