Spool insulators Main dimenstions and standard particularsCat.No.(class ansi) fig.NoMain dimensions Transverse strength(N)Low freguency voltage kV Weight (N) wet flashoverHhDdd1d2RDay flashover Verticalhorizontal53-12542757451822118,900208102.253-217638794518241813,3002512155.453-328140.5764518241117,8002512155.953-4276381057318241620,00025121511.353-5310552.51027318241126,70035182511.8R-8732 ...