Central Railway DC-AC conversion between CST to Thane complete


Rail Minister Addressing to the gathering after Dedicating DC-AC conversion.

Suresh Prabhakar Prabhu, Hon’ble MInister for Railways addressing the gathering after Dedicating DC – AC conversion between CSTM and Thane at a function held at Railway Campus Hall, Bandra.

Central Railway has completed the on the conversion from 1500 Volt DC to 25000 Volt AC traction system over Chhatrapati Shivaji Terminus Mumbai (CSTM) to Mumbra (inclusive) on slow corridor and CST to Thane (exclusive) on fast corridor.

Suresh Prabhakar Prabhu, Minister for Railways at Railway Campus, Pali Hill, Bandra, dedicated the project which cost Rs. 1176 crore to the nation on June 9, 2015.

This smooth and major transition has been achieved without any major disruption or inconvenience to the traveling public, Central Railway said in the statement.

The major benefits of this conversion includes seamless operation on 25000 Volt electric traction services for all mail/express trains (including non-daily), coming/going from lgatpuri side and Lonavala side to CST and vice versa.

The conversion from DC to AC traction will lead in saving of Electric engery due to reduction in energy losses due to changeover from 1500V DC to 25KV AC Traction upto the tune of Rs. 114 crores annually on Mumbai Division, the release adds.

In addition, there will be other benefits which include elimination of technical halt of 15 minutes at lgatpuri/Karjat for Mail/Express trains as Kalyan-Kasara-lgatpuri / Kalyan-Karjat-Lonavala sections have already been converted on 25000 Volt AC system, increased traffic flows, improvement in speed and sectional capacity, reduced cost of operation and substantially higher reliability. Improved reliability of signaling system due to provision of state of art technology audio frequency track circuits and Improved control communication due to provision of optic fibre cable.

To cater to the ever increased traffic requirement in Mumbai area and for better reliability to suburban services, the work of 1500 V DC to 25000 AC conversion was sanctioned in 1996-97 on Central Railway. The project cost is Rs. 1176 crore. The AC system has added advantage of substantial higher reliability, more than 30 per cent energy saving and substantial reduction in maintenance cost.

Mumbai suburban section (Mumbai CST to Kalyan) was electrified in 1925 at 1500 DC traction system which was the only modern traction system available at that time. Since, then this system was catering to the suburban commuter services over the years. For any increase in services (increased frequency and longer trains), additional power is required. Over the years, 1500 V DC system was not able to handle any further additional power requirement on account of steep fall in reliability and increased propensity to fire hazards. Space availability for additional sub-stations also posed a serious limitation.

History has been created by executing this challenging work of very complex nature in the busiest network of Indian Railways, without any disruption to sensitive commuter traffic. DC to AC conversion work has already been completed in Vasai-Diva-Jasai, Panvel-Karjat, lgatpuri-Kalyan & Pune-Kalyan,Kalyan-Thane fast corridor, Thane-LTT section on 5th and 6th Lines and now with Conversion of First Railway line i.e CST and Thane, a huge milestone have been achieved.

Gopal Shetty, MP, Rajan Vichare, MP, Sunil Kumar Sood, General Manager, Central & Western Railway, R. D. Tripathi, AGM, CR, Prabhat Sahai, CMD, MRVC, G. R. Agarwal, CEE, CR, Amitabh Ojha, DRM, Mumbai, CR and Narendra Patil Chief PRO, CR were also present on this occasion.