Aside from helping conserve energy, what are some other benefits of this technology?
OH: The Sitras SES technology can be summed as one principle with two operating modes: As a voltage stabilizer, its energy content is constantly kept at a high level and it discharges when the system voltage falls below a specified limit. In energy saving modem it absorbs the energy generated by braking vehicles and stores it until the storage unit can feed it back into the power supply system at a later point when vehicles are accelerating. The system can switch automatically between these two operating modes so that it can adapt perfectly to the prevailing operational requirements. TH: What other mass transit networks in Europe and China are using this? OH: Cities that are using this technology include Madrid, Spain; Cologne, Dresden and Bochum (Germany); and Peking, China. TH: What are some of the environmental benefits of high speed rail networks? OH: In the high-speed sector, our Velaro E – which now runs in Spain – is the fastest series production train-set in the world. And extr