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PORCELAIN STAY INSULATOR FOR LINES                         Ansi class fig.No Leakage distance (mm) Mechanical failing load (KN) Power-frequency flashover voltage (kv) Weight (N) Dry Wet 54-1 1 41/1 5" 8 44 25 12 4.9 54-2 2 47.6/1 7" 8 53 30 15 7.8 54-3 3 57/2 1" 4 89 35 18 12.5 54-4 4 67/3" 89 40 23 17.6