| 摘要 |
FIELD: electricity.SUBSTANCE: application: in the field of electrical engineering. A pole comprises sections that contain fixed contact leads fastened to insulators and arranged along the longitudinal axis of symmetry of the section and having left and right parts relative to this axis, besides, contact leads on working ends facing each other comprise contact surfaces that limit a spark gap closed with movable electrically connecting bodies (for instance, knives), pressed to contact surfaces by means of springs and installed as capable of opening and further closing of the specified spark gap by means of displacement of the specified bodies with the help of a driving mechanism, for instance, accordingly into fixed upper and lower positions, at the same time, according to the invention, contact leads together with electrically connecting bodies in the closed position form two transposed electrical chains that cross in space, but are insulated from each other: "left (right) part of one contact lead - electrically connecting bodies - right (left) part of the other contact lead".EFFECT: increased reliability of operation and even distribution of AC current between electrically connecting bodies and contacts.7 cl, 7 dwg |
