Replacement Of 14 Nos 33 Kv Sf6 Cum Ais Bay With 33 Kv Double Bus Gis Panel Along With 2 No New Transformer Lv Bays, 01 No B/C Bay, 2 Etr, 1 Sst, 2 Pt Bay At Bagnan 132/33 Kv Gas Insulated Substation On Turn-Key Basis