Pc- Rail gear



Looks like RDSO is into R&D of or for development of dual mode locomotives that can run on both electric and diesel traction. These will be christened as WDAP4s,...
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which will be achieved by converting EMD locos into dual mode ones.
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As per the accompanying video, the electric traction motors of 5000 HP will be added to the existing 4500 HP diesel motors and there will be a single panto for the electrified sectors.
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This is the video giving a broad idea of the development phase of the WDAP4 locos, which are a good answer to both new imported HHP EMDs as well as those being made for freight operations by Alstom at Marhawra, Bihar.
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Here is a write-up or overview on dual traction locos:
WAP-4 + WDP-4=WDAP-4 (MIXTURE OF ELECTRIC AND DIESEL LOCO) MAY ALSO ON THE TRACKS
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The Indian railways have undertaken an ambitious plan of electrifying the entire railway network in the country. In the interim, mixed routes of traction are inevitable and will continue to exist. Electric locomotives can work only with overhead catenary supply, whereas diesel locomotives have the flexibility to operate anywhere on the Indian railways network.
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Dual-mode (diesel + electric) locomotives can work with diesel engine as the primary power source while operating in non-electrified routes and work as an electric locomotive by drawing power from overhead catenaries in electrified sections.
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The RDSO has drawn up plans to convert the EMD WDP4D locomotives to dual fuel mode that will run on both diesel as well as AC electric traction. And unlike the converted WAGC3, the WDAP4 (wag11)will be a true dual-mode locomotive. The proposed WDAP4 locomotive is being designed to haul 26 air conditioned cars at a top speed of 135 Kmph.