supply of igbt based 3-phase drive propulsion equipments comprising of traction converters, auxiliary converters, vehicle control units (vcu) with cab redundancy and flg redundancy for complete three phase locomotive along with physical medium. as per annexure aigbt based 3-phase drive propulsion equipments comprising of traction converters, auxiliary converters, vehicle control units (vcu) with cab redundancy and flg redundancy for complete three phase locomotive along with physical medium. as per annexure a,igbt based 3-phase drive propulsion equipments comprising of traction con verters, auxiliary converters, vehicle control units (vcu) with cab redundancy and flg redundancy for complete three phase locomotive along with physical medium. as per an nexure a [ warranty period: 72 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] , igbt based 3-phase drive propulsion equipments comprising of traction con verters, auxiliary converters, vehicle control units (vcu) with cab redundancy and flg redundancy for complete three phase locomotive along with physical medium. as per an nexure a [ warranty period: 72 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]