+91-40-6723 7000    

Medha offers HEP units from 300kVA-500kVA and higher (1000kVA – 2x500kVA), utilizing capacities of alternator / transformer to meet auxiliary power requirements such as lighting, fans, HVAC, heating, battery charging etc. of complete train. HEPs are IGBT based converters, using sine filters at inverter output to minimize harmonic distortions. Protections for output overload, short circuit and power ground are provided. The converters are designed to suit wide range of inputs.


  • Single, dual or multi voltage options
  • Energy efficient design
  • In-built redundancy and safety features
  • Underframe or on-board mounted
  • Natural air cooled, forced air cooled or liquid cooled
  • Modular design for ease of maintenance
  • Compact, reliable and robust design to withstand railway conditions
  • Compliance to international standards: IEC60571, IEC61287,IEC61373
  • Flexibility to have integrated HEP units with in-built battery charger, HEP unit integrated with traction converter, or other customer specified requirements

500kVA converter, underframe mounted, forced convection cooled (for Diesel Electric Locomotives)

500kVA converter, on-board mounted, forced convection cooled (for Electric Locomotives)

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

Behind Mint Compound, Cherlapally, R.R.Dist,
Hyderabad - 500 051 Telangana, India.
Phone: +91-40-6723 7000; Fax: +91-40-2726 4144

Corporate Identity Number:  U31103TG1984PTC004436

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