Post insulators are designed for insulating and fastening of conductive parts in electric equipment, distributive devices of power stations and substations. Post in-sulators are used to complete: disconnectors of indoor installations, circuit-breakers, power junction boxes and fuses. These insulators are also used for busline insulation. The insulating part is made of ceramic electrotechnical material of subgroup of 110 ГОСТ 20419-83. Post insulators conform to ТУ 16-528.105-77
standard.
