Replacement Of 1X10Mva 110/11Kv Power Transformers By 1X20Mva, 110/11Kv Power Transformers And Providing Additional Switchgear At 110/11Kv Venkatagiri Sub Station In Gangavathi Taluk, Koppal District On Partial Turnkey Basis, Including Supply Of All Materials/Equipments (Excluding Supply 20 Mva Power Transformers And 1Lkv Switchgear) And Erection (Including Dismantling & Civil Works) Of All Materials/Equipments, Testing And Commissioning(Call-4)