GW16 and GW17 outdoor HV disconnectors are widely used in the electric power grid

but the conductive rods of the type have a ubiquitous water-leak deficiencies

especially during the ice disaster in early 2008

it causes much freezing failure.To ensure the safe operation of the electric power grid

the internal structure of this disconnector is analysed

and the corresponding feasible measures for anti-icing are actualized.The effective measures are make active use of power cut time

implement anti-icing technology for GW16 and GW17 disconnectors

and during the period of design and type choosing select new structure disconnector with conductive rods to prevent water-leak.