The Chenani-Nashri tunnel on Jammu-Srinagar National Highway, which Prime Minister Narendra Modi has dedicated to the nation this Sunday, is the India’s first and the world’s sixth tunnel to have transverse ventilation system, providing fresh air to passengers. The tunnel, constructed at a cost of Rs 2,519 crore, will reduce the distance between Jammu and Srinagar – the twin state capitals – by 30 km, while ensuring safe and swift passage for commuters, even in adverse weather conditions. To ensure smooth travel and safety of commuters, the ABB has designed, engineered and supplied low harmonics variable speed drive (VSD) system for tunnel ventilation.
It is the 9-km long tunnel.
ABB is the global leader in industrial technology and operates in approximately 100 countries, including India.
VSD (variable speed drive)- A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.