What is BS EN 15625 about?
BS EN 15625 specifies the requirements for the design, testing and quality assurance of automatic variable load sensing devices.
BS EN 15625 informs you about the various processes meant for automatic variable load sensing devices designed to continuously sense the load of a railway vehicle and provide a pneumatic output signal that can be used by a relay valve for the automatic variation of the air pressure used for brake applications, thereby adjusting the brake force accordingly to achieve the required brake performance.
NOTE: The requirements of this document are not fully applicable for tests on vehicle level (vehicle homologation tests).
Who is BS EN 15625 for?
BS EN 15625 on automatic variable load sensing devices is relevant to:
- Manufacturers and suppliers of load sensing devices
- Railway authorities
- Railway engineer
- Operators
- Designers and installers
- Mechanical engineers
Why should you use BS EN 15625?
The load sensing valve protects the wheels by reducing braking forces that can result in wheel sliding, especially under adverse weather or track conditions.
BS EN 15625 gives you the information related to the design, testing and quality assurance of automatic variable load sensing device which is connected to the vehicle, which responds to the loading of that vehicle to provide a continuous load proportional signal to the brake control device. BS EN 15625 specifies the functional and mechanical requirements of an automatic variable load sensing device and also gives its fire behaviour.
BS EN 15625 provides best industry guidance on the acceptable performance of the automatic variable load sensing device in terms of its effect on the vehicle brake systems and the ability of the device to withstand the vehicle environment. Overall, BS EN 15624 assures the best quality parts and components are chosen for the optimal efficiency of the overall railway system.
What’s changed since the last update?
BS EN 15625:2021 supersedes EN 15625:2008+A1:2010. BS EN 15625:2021 includes some technical changes with respect to EN 15625:2008+A1:2010. These include:
- Normative references have been updated
- Terms and definitions have been revised
- Requirements on design and manufacture have been revised
- Requirements on type tests have been revised
- Requirements on installation validation and on documentation have been removed
