GAS INSULATED SWITCHGEAR

PURPOSE: To reduce an installation area and the length of a gas insulated bus- bar and facilitate the rationalization of a main bus-bar part in which a main bus-bar instrument transformer and a main bus-bar grounding switch are provided. CONSTITUTION: A left side main bus-bar unit 24a and a right side main bus-bar unit 24c are provided on a same axis while a certain interval is kept between them. Line circuits 10 are drawn out to the same side of the main bus-bar units. A central main bus-bar unit 24b are provided on the side opposite to the side from which the line circuits 10 of the main bus-bar units are drawn out and are provided in parallel with the left side main bus-bar unit 24a and the right side main bus-bar unit 24c. A transformer circuit 11 is drawn out from the central main bus-bar unit 24b. A first bus-bar section circuit 23a and a second bus-bar section circuit 23b are provided in a direction perpendicular to the respective main bus-bar units. Bus-bar end parts 25a, 25b and 25c which carry no load current are provided in the respective main bus-bar units and an instrument transformer 8 and a grounding switch 4 are provided.