040-6723 7000     info@medhaindia.com

Medha works in association with EMU owners, operators and local coach builders to study, design and supply advanced traction system for new trainsets and also for revival of existing fleet. Solutions are designed to suit available input power supply, vehicle design and operational requirements.

Revival of existing fleet can be done in shorter duration and at very economical costs.

Association also offers opportunities for building technological capacities and capabilities within the country of implementation.

System flexibility

  • Catenary Voltages - DC 750 V…3000 V, AC 15 kV…25 kV
  • Propulsion System - 0.5...2.0 MW (per Motor Car)
  • Full Regeneration capability
  • High Reliability and Redundancy (with Fail changeover)
  • Train Configuration - 4 to 18 car consists, 25% to 50% driven axles

Traction and Auxiliary Converters

  • Mounting – Underfloor or On-board
  • IGBT Module – 1.7kV 1200A/1800A, 3.3kV 1200A/1500A
  • Cooling – Natural Cooled, Forced Air Cooled, Liquid Cooled
  • Enclosure – Mild Steel, Stainless Steel, Aluminum

Train Control & Management System

  • Propulsion and braking control, HVAC control, passenger information system, door control etc., Communication interface for complete train consist using WTB, MVB, CAN, Ethernet interface

Design, manufacture and commissioning of 25kV AC (OHE) based Propulsion System for EMUs 

  • Pantograph - 25 kV, 50 Hz, 400 A
  • Vacuum Circuit Breaker - 25 kV, 1000 A
  • Traction Transformer - 1 Primary (25 kV, 1300 kW), 2 Secondary (950 V, 650 kW)
  • IGBT based Propulsion Converter - 2 Line Converters, 2 Inverters, bogie control, 3.3kV,1200 A IGBT
  • Auxiliary Converter - 125 kVA, 415 V (3ph), 110 V (1 ph), 110 V DC
  • 3 phase AC Traction Motor - 352 kW continuous, self ventilated, axle hung, nose suspended, gear box
  • Train Control & Management System
  • Communication interface for complete train consist using WTB, MVB, CAN,Ethernet interface
  • TFT LCD driver display screens
  • Passenger Information & Communication System
  • System integration test IEC 61377
  • Vehicle integration test IEC 61133
  • EMI/EMC homologation
  • Passenger carrying capacity (at Super Dense Crush Load) : Driving Trailer Car – 466, Motor Car – 446, Trailer Car – 566, 12 car consist - 6112
  • Axle Load limit - 20.3 Tons (including super dense crush load of passengers)
  • Track Gauge - 1676 mm, Sharpest Curve - 152.4 m radius, Turnout - 1 in 8 ½
  • Acceleration 0-40 kmph (0.54 m/s2), Normal braking deceleration (110 kmph to standstill) – 0.8 m/s2)

 

Vision & Mission

To be World Leader in Railway Products

Enjoying Innovation and Applying Technology for improving the lives of people.
Enhancing the image of India in the world, in high technology.



R & D Centre

MEDHA SERVO DRIVES PVT. LTD. 2-3-2/A,
Behind Mint Compound, Cherlapally, R.R.Dist,
Hyderabad - 500 051 Telangana, India.
Phone: 91-40-6723 7000; Fax: 91-40-2726 4144
E-Mail: info@medhaindia.com
Corporate Identity Number:  U31103TG1984PTC004436

Regd Office

MEDHA SERVO DRIVES PVT. LTD. P-4/5B, IDA, Nacharam, Hyderabad - 500 076 Telangana, India
Phone: 91-40-2717 1101; Fax: 91-40-2715 4706

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