IET, Guide to Earthing and Bonding for AC Electrified Railways

This comprehensive guide addresses the complexities of earthing and bonding in AC electrified railway systems, recognizing that no single design can suit every railway. It explains the core principles and typical configurations for earthing and bonding traction system assets, lineside structures, and other equipment to minimize hazards and equipment failures. The guide supports infrastructure owners, railway designers, and contractors in developing a harmonized approach to earthing and bonding for AC railway infrastructure. Covering topics such as traction return systems, electric shock protection, lightning protection, AC/DC interfaces, and safe working practices, it also details the ‘common earth’ system concept for robust, low-impedance earthing across traction and non-traction assets.