FIELD: electricity.
SUBSTANCE: invention relates to the field of power engineering, in particular, to insulators with earthing inserts for overhead transmission lines and electric substations. Insulator consists of two end 1, 2, earthing insert 3 and insulating element. Insulation element is made in the form of fiberglass or basalt plastic rod 4, earthing insert 3 is made in form of one or several metal sleeves, which are fixed between end 1, 2 on rod 4.
EFFECT: insulator is characterized by low prime cost of manufacture, high electric charge characteristic due to achievement of optimum values of construction height of insulator and total length of leakage path, besides, insulator is characterized by reliable operation in areas with heavy air pollution.
9 cl, 1 dwg
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