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About Railway Electronic Devices

Comprehesive One-Stop - Railway ElectronicDevices Testing and Certification Service

Enhance Railway Traffic Safety and Operation Efficiency


It has been over 200 years since the first railway service began, and the technology is progressing rapidly day by day, the demand of safety is getting more and more important for passengers. Therefore, the combination of the railway traffic safety improvement and operational efficiency becomes a key issue for railway traffic service provider as well as for electronic equipment manufactures


When the train is operating, it has to face a vibratory condition all the time, and sometimes the voltage is not stable, either. Therefore, how to avoid these conditions to protect passengers’ safety is the most important thing. Providing efficient railway electronic devices which could adapt to different environment situations include altitude, humidity, impact, vibration, and temperature, etc will be one of the ways to keep passenger safe.


EN 50155 applies to any low voltage electronic equipment installed on rail vehicles and in railway applications. This requirement helps system integrators find devices that are certified for railway applications and they are tested thoroughly to deal with unique situations presented by the rail industry. 


EN50155 ensures that the electronic equipments used on rolling stock are thoroughly tested for situations including Critical Temperature Requirements of variances from extreme cold to extreme heat, Shock and Vibration Protection to validate to handle each bump and reoccurring vibration wherever it is installed.


Bureau Veritas is a leading testing and certification organization with strong competitive advantages and many technical experts relative to railway field supporting clients in improving the life-circle of their railway system, controlling risks, reducing the possibility of breakdown, and increasing operational efficiency


This standard applies to all electronic equipments for control, regulation, protection, supply, etc., installed on rail vehicles and associated with 

1.       the accumulator battery of the vehicle 

2.       a low voltage power supply source with or without a direct connection to the contact system (transformer, potentiometer device, auxiliary supply) 

Testing Scope 

Service Items 

1. The train control/communication system 

Visual inspection

Supply overvoltage test

Vibration, shock and bump test

2. The radio equipment 

Performance test

Radio interference test

Water tightness test

3. The power supply (DC/DC or AC/DC) 

Cooling test

Insulation test

Low temperature storage test

4. Air conditioning systems (HVAC)

Dry heat test

Equipment stress screening

Surges, electrostatic discharge and transient burst susceptibility tests

5. Display

Damp Heat Test , Cyclic

Salt mist test

Technical Standards

EN 50155, EN 50121-3-2, EN 50121-4, EN 61373 , EN 60068-2-1, EN 60068-2-2, EN 60068-2-30, IEC 60571

Why Choose Bureau Veritas CPS E&E Taiwan?

• Bureau Veritas is your partner throughout each phase of your project: from feasibility studies to service operations and for all kinds of rail systems (rolling stock, track, signals), infrastructures (bridges, tunnels, stations, etc.) and HSE hazards.


• Bureau Veritas has European technical expertise such as EC accreditations and is a notified body.


• A worldwide network with a strong presence in Europe, China, India and the Middle East region.


• Bureau Veritas is recognized as a railway safety inspection expert and EN50126, EN50128, EN50129 leading notified body

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