Zirconium Copper Rotor Bars For Zirconium Type Shaft Mounted Design Rotor (Scheme-1) For 3-Phase Tm Type 6Fra-6068 As Per Rdso Drg No. Skel-4740 Alt-3 And Specn No. Rdso/2008/El/Spec/0063/Rev-4. [ Warranty Period: 30 Months After The Date Of Delivery ] ]