Supply of Tungsten Copper Tipped Contact Assembly Top & Bottom For Tap Changer To Bhel Drg . No.35801130102V00 Cs No. Bcs 1263, Fig. Ref. B030 And Drg. No.35801130102V01 Cs No. Ccs 126 3 Fig. Ref.001 Warranty Period: 30 Months After The Date Of Delivery