Design, supply, erection, testing and commissioning of all works related to traction substations (scott-connected), including all associated works of switching posts (SP / SSP) for the 2x25 kV AT feeding system, all-steel structures, earthing, SCADA, foundations, and all civil works of TSS/SP/SSP such as structure foundations, retaining walls & fencing for SP/SSP, etc., excluding the supply of power transformers, auto transformers, auto fault locators, power quality restores in the Jolarpettai Jn - Salem Junction (JTJ-SA) section of Salem Division, Southern Railway, Tamil Nadu, India, in connection with the mission 3000 MT loading target