TPS to supply power system for Bombardier fleet on LU Central Line February 16, 2018 | Europe Company News Turbo Power Systems (TPS) has secured a contract from Bombardier to design and supply the auxiliary power supply (APS) equipment for a fleet of 680 railcars deployed on the London Underground (LU) Cen... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password