DBST will provide the overhead line monitoring equipment, which is similar to that already being used by DBST and ESG for testing and commissioning of new train fleets on British infrastructure.\r\n\r\nESG says the system has the capability to measure a number of interface attributes, most notably contact force, as well as contact wire height and stagger. There are also a number of other supporting data channels that will be collected during operation.\r\n\r\nThe focus will initially be to deploy two monitoring systems onto NR\u2019s Mobile Electrical Network Testing, Observation and Recording (Mentor) test coach, following which ESG will install a single system onto a class 390 Pendolino EMU to cover the West Coast Main Line, which will provide data on a daily basis via normal passenger train service operation. The regular collection and assessment of asset condition data will support NR\u2019s ambition to move towards a predict and prevent maintenance strategy.\r\n\r\nThe monitoring system will measure the force between the contact wire and pantograph carbon strips, via high-fidelity sensors mounted directly on the pantograph head. All sensors will be subject to a thorough calibration process at DBST\u2019s laboratory in Munich, Germany, before they are deployed in Britain.\r\n\r\nUnder the programme the Mentor system will enter operation towards the end of 2019, with the class 390 deployment scheduled to start a few months later. All three systems will be fundamentally the same. However, additional equipment will be fitted onto the class 390 to allow for the fleet\u2019s tilting capabilities.\r\n\r\n\u201cAs well as enabling a transition to more predictive maintenance regimes, this contract is the starting point for NR\u2019s strategy to use in-service passenger vehicles to make dynamic measurements of the overhead line at line speed, something that isn\u2019t possible using just Mentor, which is limited to 160km\/h,\u201d says NR mobile monitoring principal engineer, Mr Kevin Hope.