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Chennai Metro Rail Ltd has awarded a Rs 305-crore contract for power supply and overhead equipments to Siemens AG, Germany and Siemens Ltd India consortium.
According to a press release from Chennai Metro which is implementing the Rs 14,000-crore metro rail project in Chennai, Siemens bagged the contract through international bidding process for the design, supply, installation, testing and commissioning of complete power supply systems covering elevated and tunnel sections of the metro rail system.
CMRL will receive electrical power from Tamil Nadu Electricity Board for a maximum demand of 60 MVA from three 110 kV sub-stations being set up by TNEB at Koyambedu, Alandur and Chennai Central. Three traction sub-stations will be set up under this contract to step-down the voltage from 110 kV to 25 kV AC single phase for use for the traction purposes.
Substations
This contract also provides for setting up of three auxiliary gas insulated sub-stations at Koyambedu, Alandur and Chennai Central to step down the 110 kV to 33 kV for supply of power to stations, air-conditioning systems, tunnel ventilation systems, lighting and other utilities at the stations.
Besides setting up these facilities, the contract includes comprehensive maintenance till end of a defect liability period of two years after the completion of the project.
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