3-Phase EMU of South Central Railway - 110 kmph designed by Hyderabad based M/s MEDHA Servo Drives Ltd.

The new 12-car EMU train ready at Villivakkam station yard (ICF/Chennai)

There is something to cheer about for commuters in the twin cities of Hyderabad & Secunderabad. New 12-car rake Electrical Multiple Unit (EMU) will be inducted into MMTS services.

The salient features of this 12-car (coaches) EMU trains that are likely to appeal to passengers are:

 

Ø  Increase  in maximun speed from 96km per hour to 105 km per hour, which will reduce travel time

Ø  There is a smooth speed control by VVVF technology for comfortable ride.

Ø  LED lighting system

Ø   Ergonomically-designed seats

Ø  An increase in “standing passengers” capacity from 3768 to 4852

Ø  CCTV cameras in all the Ladies compartments for safety of women passengers. These are surveillance cameras to strengthen security for women passengers.

Ø  A modular roof-mounted ventilation system in addition to the regular fans.

Ø  LED indication when alarm chain is pulled

Ø  A good passenger information system. In an obvious advantage over single-phase EMUs with two station-display units, these new trains are equipped with four display units per coach.

Ø  When alarm chain is pulled in Ladies coach, a LED light will glow in the Driver’s cabin. As the coach will be indicated, prompt intervention is possible.

Ø    “The new ventilation system lets in about 16,000 cubic metres of fresh air, every hour — a unique feature that is likely to be appreciated when the train is packed. A PA system for private communication between crew. 

Ø  An event recorder, on the lines of a black box in planes, has been incorporated.

Ø  Sensors installed in the cabin to facilitate computer-monitored speed control and braking.

Ø  The three-phase EMU puts out 5744 Horse Power as against 3584 HP by a single-phase train.

Ø  Due to its three-phase drive technology, this train saves on maintenance costs.

Ø  Above all, during braking, 30% power will be regenerated and sent back to the overhead lines. The electricity generated in this process would be fed into the grid.

Ø  The new 12-car rake consists of 4 units with IGBT technology (Integrated Gate Bipolar Transistors) 3-phase propulsion system.

Ø   These coaches are fitted with easy to slide, light weight sliding doors supported by imported sliding mechanism including user friendly locks, latches, and maintenance-free rollers. It is not only energy-efficient but also requires less maintenance because of oil-free compressor.