Central Railway declare completion of DC to AC conversion on Mumbai’s CR rail route

Mumbai: A historic milestone was achieved by the Central Railway in the early morning hours of June 8 with the conversion from 1500 volt DC to 25000 volt AC traction system over CSTM to Mumbra (inclusive) on slow corridor and CSTM to Thane (exclusive) on fast corridor. The Central Railway today officially announced successful completion of the conversion of the overhead power supply system from 1500 Volt DC to 25,000 Volt AC traction on the rail route connecting CST and Thane.

This conversion was carried out from Chhatrapati Shivaji Terminus Mumbai (CSTM) to Mumbra (inclusive) on slow corridor and CSTM to Thane (exclusive) on fast corridor.

“This smooth and major transition has been achieved without any major disruption or inconvenience to the travelling public.” The total project cost of Rs. 1299.91 crore, includes CST-Panvel Harbour line also but whose work is yet to be completed. This is nothing short of an achievement considering the fact that our engineers did it without disturbing current services and creating trouble for the 42 lakh commuters in their day-to-day travelling,” said Narendra Patil, Chief Public Relations Officer of Central Railway.

He said, The major benefits of this conversion includes seamless operation on 25000 volt electric traction services for mail/express trains (including non-daily), coming/going from lgatpuri side and Lonavala side to CST and vice versa. There will be 33% energy saving due to regenerative braking of new generation EMU trains; time saving as new generation EMU runs at 100 kmph as compared to DC EMU at 80 kmph. “

Despite rains yesterday, CR authorities went ahead with the conversion work and it was finally completed this morning, he added.

“This smooth and major transition has been achieved without any major disruption or inconvenience to the travelling public,” he said.

The total cost of the project is Rs 1,299.91 crore, including for the conversion of the CST-Panvel route on Harbour line.

DC to AC conversion work has already been completed for Vasai-Diva-Jasai, Panvel-Karjat, Igatpuri-Kalyan and Pune? Kalyan, Kalyan-Thane fast corridor and Thane-LTT section on the 5th and 6th Lines.

The PR department of Central Railway said among the major benefits of the conversion are that seamless operations wpuld be ensured on 25,000 Volt electric traction services for mail/express trains (including non-daily), coming/going from Igatpuri side and Lonavala side to CST and vice-versa.

“There will be 33 per cent energy saving due to regenerative braking of new generation EMU trains; time saving as new generation EMU runs at 100-kmph as compared to DC EMU at 80-kmph,” Central Railway said in a release here.

Mumbai suburban section (Mumbai CST to Kalyan) was electrified in 1925 with a 1500 DC traction system, the only modern traction system available at the 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 volt DC system was not able to handle any further additional power requirement. Space availability for additional sub-stations also posed a serious limitation.

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