Replacement Of Existing 220 Kv,120 Kn Src Insulators With New 120 Kn Src Insulators At All Cut Point Towers From Loc No.01 To 69 ( 30 No’S Towers) To Avoid Frequent Breakdowns In 220 Kv Dc Line From 400 Kv Ss Rachagunneri To 220 Kv Ss Naidupeta In Tirupathi District.