3rd call for - Conversion of existing 22 kV Indoor SF6 switchgear pertaining to 50MVA, 220/22kV TF-3 & TF-5 LV bays and it's 22kV outgoing feeder to GIS along with replacement of transformer LV Side cables three core HT cables by single core cables at 220KV Temghar Substation under EHV (O&M) Dn, Kalwa.