PURPOSE: To suppress surge and to reduce the size of a gas insulated switchgear by forming a step on the outer circumferential face of a conductor then applying an unwoven fabric on the bottom face thereafter winding a magnetic body and an unwoven fabric alternately thereon many times and applying an unwoven conductive fabric to be flush with the surface of the conductor.
CONSTITUTION: A step 10 is made on a high voltage conductor 3 and a magnetic body unit 11 is arranged in the step 10. An unwoven fabric is applied on the bottom face of the step 10 then a magnetic body and an unwoven fabric are wound alternately many times thus constituting a unit 11. When an unwoven conductive fabric is applied, to be flush with the surface of the conductor 3, onto the unit 11, surge is suppressed when a disconnecting switch is opened or closed and the size of the gas insulated switchgear can be reduced.
AOYANAGI HIROKUNI
OKUBO HITOSHI
