System Improvement Project For Survey, Design, Supply, Installation, Commissioning Of 1no. 33/11kv Outdoor Sub-station With Its Connected 33kv And 11kv Lines At Balla In Kuppam Constituency Of Chittoor Circle On Semi - Turnkey Basis Ptr, Dtr And Vcbs Are Dept. Supply Under T And D Improvements 33/11kv Outdoor Substations