Replacement Of Ageold Bus-2 Pentagraph Isolator Of 400Kv Btps Line By New Pentagraph Isolator (Without Earthswitch) & Bus-1 Pentagraph Isolator Of 400Kv Beeranahalli Line-1 By New Pentagraph Isolator (With Earthswitch) At 400/220Kv R/S Guttur On Total Turnkey Basis Including Supply Of All Matching Materials/Equipments, Including Supply, Erection, Loading & Unloading, Transportation, Testing And Commissioning