CONNECTION STRUCTURE AND INSULATING COVER OF BUS-BAR

摘要

PROBLEM TO BE SOLVED: To shorten a current path substantially and to suppress a power loss and heat generation, by supplying power to a load-side conductor from a movable electrode through a fixed electrode and a flexible conductor. SOLUTION: A vacuum switchgear is mainly composed of a fixed electrode 5 and a movable electrode 7 which moves between the fixed electrode 5 and a ground electrode 6. And the fixed electrode 5 is connected to a power-source-side conductor 8 through a connecting conductor, and the movable electrode 7 to a load-side conductor (a cable head 10 outside a vacuum grounding container) through a flexible conductor. Here, a current flows at a make position Y1 where the movable electrode 7 touches the fixed electrode 5, in accordance with the rotation of the movable electrode 7, and the current is interrupted when the movable electrode 7 moves rotating below the make position Y1, and separates from the fixed electrode 5 at a breaking position Y2. Furthermore, it moves downwards rotating and the movable electrode 7 separates from the fixed electrode 5 at a disconnecting position Y3, and an insulation distance enough to prevent dielectric breakdown caused by lightning, etc., and to prevent a worker from electric hazards. Furthermore, the movable electrode 7 moves downwards rotating, and touches the ground electrode 6 at its installed position Y4.