Tenders for Supply of Oil Cooling Unit For Transformer/ Converter With Impeller And Casing As Per Rdso Spec.No.Rdso/2016/El/Spec/0123 Rev. Warranty Period: 30 Months After The Date Of Delive Ry Oil Cooling Unit For Transformer/ Converter With Impeller And Casing As Per Rdso Spec.No.Rdso/2016/El/Spec/0123 Rev. Warranty Period: 30 Months After The Date Of Delive Ry