German engineering giant Siemens declared on 17 March 2011 that it won contract to supply the complete railway electrification system for Kolkata's new metro line. Siemens also received a corresponding order from the Indian operator Kolkata Metro Rail Corporation (KMRC). The order from KMRC include project management, design, installation and commissioning work, plus personnel training and maintenance throughout the three-year warranty period.
The new east-west metro line in Kolkata will have a total length of 14.67 kilometers and serve 12 stations. Construction of this new metro line will take place in two phases- the first phase is expected to be completed by 2013 and the second by 2014. It will be the first underwater metro line in India.
The power itself will be supplied by the local partner Calcutta Electric Supply Corporation Ltd. A Scada system will monitor and control the entire power supply system while a Sitras SMS type stray-current monitoring system will eliminate any damage due to stray current corrosion, thereby lowering the cost of maintenance.
Siemens first succeeded in entering the mass transit market in India in 2004 when it completely equipped Delhi Metro Line 3 with signaling equipment and railway communications systems.
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