Repair, Recondtioning And Rewinding Of Failed Single Phase Winding Retaining Existing Core And Tank, Delivery, Assembly, Testing And Commissioning At Ytps Of M/S Bhel Make, 1 Phase, 50Hz, 315 Mva, 27/420/3 Kv, Ynd11 After A 3 Phase Bank Formation With Other Two Similar 1 Phase Transformers, Onan / Onaf / Ofaf Cooled Generator Transformer