Chennai: The Chennai Metro takes the planned urbanisation agenda a step forward with the opening of the 9-km-long extension.
The new line will allow passengers to travel from the northern part of the city to Chennai International Airport in the south in around one hour and will play a key role in easing the road traffic and enhancing public transportation.
Rail and road tunnels mandate rigorous ventilation standards for air quality and fire safety features.
ABB drives are used together with electric motors for the effective control of tunnel ventilation fans. They are integral in the operation of advanced air exchange systems in the stations and tunnels, ensuring passengersâ comfort and saving energy in normal operation as well as contributing in safe evacuation, smoke extract and fire fighting in case of emergency.
Almost non-existent harmonics, thanks to the drivesâ active front end design, mitigate the risk of the network overload, ensuring continuous ventilation and efficient power supply.