Abstract: A current transformer fixing device comprises a current transformer cylinder surrounding the periphery of a central conductor to be connected to an electric power line, a cylindrical container surrounding the outer peripheral side of a current transformer arranged on the outer peripheral side of the current transformer mounting cylinder and containing the current transformer, a transformer mounting plate connecting the bottom side of the current transformer mounting cylinder and the bottom side of the cylindrical container to each other and restricting axial movement of the current transformer, a sealing flange connected to the upper end of the cylindrical container with a gap between the sealing flange and the upper end of the current transformer mounting cylinder, and fixing bolts fastened to the sealing flange in an axial direction of the conductor and restricting axial movement of the current transformer.

Abstract: A current transformer fixing device comprises a current transformer cylinder surrounding the periphery of a central conductor to be connected to an electric power line, a cylindrical container surrounding the outer peripheral side of a current transformer arranged on the outer peripheral side of the current transformer mounting cylinder and containing the current transformer, a transformer mounting plate connecting the bottom side of the current transformer mounting cylinder and the bottom side of the cylindrical container to each other and restricting axial movement of the current transformer, a sealing flange connected to the upper end of the cylindrical container with a gap between the sealing flange and the upper end of the current transformer mounting cylinder, and fixing bolts fastened to the sealing flange in an axial direction of the conductor and restricting axial movement of the current transformer.

Abstract: A gas-insulated electrical apparatus includes tanks into each of which insulation gas is sealed, including bus-bars, bus-bar disconnectors connected to the bus-bars, circuit breakers connected to the bus-bar disconnectors, and line disconnectors connected to the circuit breakers, each line disconnector being further connected to a transmission or a transformer; wherein each bus-bar disconnector and each line disconnector include a respective pair of a fixed-contact and a moving-contact, the fixed-contact and the moving-contact being concave and convex, respectively, and each of the moving-contacts in the bus-bar disconnector and the line disconnector is located at the side of a corresponding circuit breaker between the bus-bar disconnector and the line disconnector, a contact-parting speed in the line connector being lower than that in the bus-bar disconnector.