The first train with indigenous electric system, Medha, which was built under the ‘Make in India’ initiative’ is awaiting trials. It arrived in Mumbai in October last year but has still not hit the tracks.
Manufactured at Chennai-based Integral Coach Factory of Indian railways, the suburban train was expected to hit the tracks completing safety tests and trials within few months after arrival.
Railway authorities had completed static tests of the train in the beginning of this year. However, dynamic tests that includes test such as emergency braking, oscillation test and radio frequency interference tests, are still incomplete.
According to railway officials only last leg of trial is pending and it is scheduled to start from October 15 and complete before Diwali. “Radio Frequency interference trial of Medha train are pending and those will begin from October 15,” said Ravinder Bhakar, chief spokesperson of WR, adding that in the trails it will be ensured that radio frequency of the train do not interfere with other working of other equipments like signals.
After delay of several months, WR along with Railway Development Standard Organisation (RDSO) had begun dynamic testing of the train few months back. But railway sources said those were suspended due to heavy rain.
Hyderabad-based Medha Savro Drives has developed an electrical system that includes traction motors and train control system of Medha train. As stainless steel shell and exterior of it is same, Medha train resembles Bombardier train.
According to railway officials Medha train, the top of speed of which is 110kmph, is as advance as other suburban trains procured for Mumbai suburban under MUTP I and MUTP II projects. The train has three phase IGBT transmission technology, which is the most advanced one. Also, it has roof mounted forced ventilation system that is capable of supplying 16,000 cubic mhr fresh air inside train and also has regenerative braking, which when applied, makes the train generate about 30-35% energy and send to overhead wires.
One of the advanced feature of the trains is on-board diagnosis system that allows railway technicians to know the snags developed in the train from the control room itself and attend those in running train, instead of taking the train to car-shade.
Railway sources, however, say that it may take few more months to induct it in passenger service. Earlier MUTP-II trains, also known as Bombardier trains, had met the same fate. Those were inducted into passenger service after more than a year, due to delayed trials.
Three-phase IGBT transmission technology
Roof-mounted forced ventilation system that is capable of supplying 16,000 cubic mhr fresh air inside train
Regenerative braking, which when applied, makes the train generate about 30-35% energy and send to overhead wires
On-board diagnosis system that allows railway technicians to know the snags developed in the train from the control room itself and attend those in running train, instead of taking the train to car-shade