BS EN 50305:2020,Railway applications – Railway rolling stock cables having special fire performance – Test methods.
BS EN 50305:2020 supersedes EN 50305: 2002 and all of its amendments and corrigenda (if any).
EN 50305: 2020 includes the following significant technical changes with respect to EN 50305: 2002:
—a new cable standard EN 50382 series has been added to en 50305;
—the long term ageing test part is improved and adapted to the whole range of products;
—the requirements are now clearly described and give more information for the test laboratories;
—the definition of ” halogen free”in Annex F and the determination of halogens element test in Annex G are moved from the product standard (EN 50306 series) to EN 50305.
The railway industry is generally concerned with the movement of people as well as goods. It is therefore essential that a high level of safety is achieved, even when failures occur which could involve fire, howsoever caused, affecting railway rolling stock.
Hence, it is necessary to provide cables for use in railway environments which minimize the hazard to people when a fire may damage the cable, irrespective of whether the fire is caused by an external source or from within the electrical system.
European Standard series EN 50264, EN 50306 and EN 50382 specify cables, which, in the event of fire, will limit risk to people and improve the safety on railways in general. They cover cables based on halogen free materials, for use in railway rolling stock.
This document gives particular test methods applicable to the cables at present covered by the EN 50264 series. EN 50306 series and EN 50382 series.
BS EN 50305:2020 specifies special test methods applicable to cables, and their constituent insulating and sheathing materials, for use in railway rolling stock. Such cables are specified in the various parts ofthe EN 50264 series,EN 50306 series and EN 50382 series.
Other test methods required for railway rolling stock cables and their insulating and sheathing materials are listed in Annex A.