EN 50121-2: Railway applications – Electromagnetic compatibility – Part 2 : emission of the whole railway system to the outside world standard

EN 50121-2: Railway applications – Electromagnetic compatibility – Part 2: emission of the whole railway system to the outside world standard, is a crucial standard in the railway industry. It focuses on ensuring electromagnetic compatibility (EMC) and managing the emissions from the entire railway system to prevent interference with other electronic devices and systems.

1. Importance of EN 50121-2:

EN 50121-2 sets out the requirements for controlling electromagnetic emissions from railway systems to maintain safety, reliability, and efficiency. By adhering to this standard, railway operators can minimize the risk of electromagnetic interference (EMI) that may disrupt essential equipment or communication systems.

2. Scope and Application:

This standard applies to all elements of the railway system, including the rolling stock (trains), signaling and control systems, power supply systems, and telecommunication networks. It covers both AC and DC traction systems, as well as conventional and high-speed railways.

3. Emission Limits:

EN 50121-2 defines specific emission limits for various frequencies and different components of the railway system. These limits ensure that electromagnetic emissions do not exceed acceptable levels, avoiding interference with nearby electronic devices and systems.

4. Test Methods and Compliance:

To comply with EN 50121-2, railway operators and manufacturers need to conduct comprehensive EMC testing. These tests involve measuring and assessing the electromagnetic emissions produced by the railway system. Compliance demonstrates that the system meets the prescribed emission limits and does not pose a threat to other devices or systems.

5. Key Considerations for Compliance:

Achieving compliance with EN 50121-2 requires careful planning, design, and implementation of shielding techniques, filtering mechanisms, and appropriate grounding practices. Furthermore, proper cable management, separation of signal and power cables, and regular maintenance are essential to maintain compliance throughout the railway system’s lifecycle.

6. Summary Usage of EN 50121-2:

EN 50121-2 serves as an essential guideline for engineers and technical personnel in the railway industry. By following this standard, professionals can design, build, operate, and maintain railway systems that meet stringent EMC requirements. Compliance with EN 50121-2 ensures safe and reliable operations while minimizing the risk of interference with vital electronic equipment.

In conclusion, EN 50121-2 is a critical standard for achieving electromagnetic compatibility in the railway industry. Its focus on managing emissions from the entire railway system helps prevent interference with other electronic devices and systems. Adhering to this standard is crucial for ensuring the safety, reliability, and efficiency of railway operations.

For more detailed information and guidelines on implementing EN 50121-2, you can consult the official PDF document available for download on relevant industry websites.