Abstract: A high-voltage outdoor distribution installation, primarily of three-phase current and of a low-level design, comprises electric equipment having poles which are electrically interconnected and mounted on cross-arms of supports having legs secured to foundations, at least two poles of the electric equipment being arranged on each support. The foundations are in the form of unburied beams on the ground surface. At least two adjacent supports carrying the electrical equipment are combined into three-phase modules whose frames are formed by said supports and foundation beams coupling the legs of said support in the direction normal to the direction of the cross arm.

Abstract: An outdoor high-voltage switchgear assembly comprising rigid sectionalized busbars provided with busbar compensators made of flexible current-conducting members mounted on insulated supports through the use of bases having an open configuration and electrical apparatuses connected through branches to said sectionalized busbars, each base being composed of legs forming said open configuration in such a way that it is almost U-shaped, wherein said legs are placed in planes parallel to longitudinal axes of the sectionalized busbars, and the base is secured on the insulated support so that the ends of the base legs are higher than the horizontal plane going through the point common for both legs, each busbar compensator being secured by its ends to adjacent sections of the sectionalized busbars, which are attached at the ends of said base legs, and positioned between the longitudinal axes of these legs.