Abstract: In a gas insulated switchgear device, a phase transposing unit for bus line conductors is provided in a bus line tank without providing a separate bus line extending unit. A bus line container includes a plurality of tanks connected in a straight line shape in which three phase main bus line conductors are accommodated. The container also includes connecting ports through which conductors can be connected. Terminal portions near the connecting portions of respective phases of the three phase bus line conductors in at least one of the tanks are extended so as to match an arrangement position of three phase bus line conductors in an adjacent tank.

Abstract: In a conventional gas insulated switchgear device, when transposing bus line phases, a separate unit which extends bus lines is provided and the bus line phase transposition was performed with the extension unit. However, because of the use of such extension unit, a bay interval in the gas insulated switchgear device is elongated and the installation area thereof is enlarged.