Earthing and Bonding Strategy for a Large Distributed System

As part of the upgrade and modernization programs currently undertaken by the railway, old and existing equipment will be replaced by modern signaling and control systems, older communication systems will make way to newer systems using modern technology. This shift has highlighted inadequacies with earthing techniques of the past and has therefore caused renewed interest in bonding and earthing techniques and their contribution to reliable equipment operation. This paper discusses the need for an earthing and bonding strategy and draws on the experience from other industries