Disc suspension insulator design

    Double or triple umbrella structure tolerance insulators climb away from the big, open umbrella, smooth without edge within the group, low fouling rate, wind and rain is good self-cleaning properties. String insulator structure height and diameter disk can be improved with proper string wet flashover voltage, so often claim narrow head insulator, increasing disc diameter and shorter legs. But after a short foot and a disk diameter is too big a job is not easy to live when considering the transmission line icing and rain, the steel legs too short, it is easy to shed insulator bridge, lower flashover voltage. Electrical and mechanical damage usually higher strength insulator, the larger the size of its steel cap, high structural height, therefore, the disc diameter should be increased accordingly. Experience drawn: vertical insulator flashover flashover distance and level than the distance between 1.1-1.3 is more appropriate. Bell-type suspension insulator antifouling absorb structural features in Europe, America and Japan anti-fog insulators, the use of different internal and external umbrella wet umbrella of resistance and high discharge edge suppression action, better antifouling properties, artificial and natural contamination filthy experimental results show that the flashover voltage than comparable ordinary insulator can be increased by 20% -50%. The same intensity level of ordinary type and Fog type insulators with the same size ball and socket connection, in order to swap.