GAS-INSULATED SWITCHGEAR

PROBLEM TO BE SOLVED: To dispense with a pit and to reduce the cost sharply by extending a first single-phase type connecting bus-bar from the tip of a three-phase bundled type connecting bus-bar in the axial direction, connecting it to a bushing part, and branching second and third single-phase type connecting bus-bars from the obliquely arranged part of the three-phase bundled type connecting bus-bars and connecting them to respective bushing parts. SOLUTION: Sections which are arranged obliquely with certain inclinations with respect to lines 8, 8, 8 of bushings arranged standing for first and third phases approximately in a line at required intervals, are formed on the side of the lines 8, 8, 8 of bushings. A single-phase type connecting bus-bar 10 is extended and caused to rise, in the axial direction from the tip of a three-phase bundled type connecting bus-bar 7 at an obliquely arranged part, and connected to a line 8 of bushings as a first phase. Next, single-phase type connecting bus-bars 11, 12 are branched and extended approximately at right angles with respect to an axis from the obliquely arranged parts of the three-phase bundled type connecting bus-bars 7, then are caused to rise after that, and are connected to lines 8 of bushings as a second phase and a third phase. Consequently, it becomes possible to reduce the number of spots of direction change, i.e., bent sections, to make a pit unnecessary and to sharply reduce the cost.