| 摘要 |
<p>PURPOSE:To reduce the transmission of a seismic force to a bushing by a method wherein a joint which is interposed in a connecting route between an electric apparatus body and the bushing can be displaced and turned together with the connection part of a conductor. CONSTITUTION:Joints 8, 9 are interposed in the connecting route of a connecting tank 7 which connects an electric apparatus body fixed onto a foundation to a bushing 4, and connection parts 10, 11 of a conductor 5 are installed inside the joints 8, 9. The joint parts 10, 11 can be expanded and contracted in the lengthwise direction of the conductor 5, and they can be turned a little by making use of a direction perpendicular to the conductor 5 as the axial center. When a seismic force is exerted on a bushing part of such a structure, the part of the bushing 4 causes a selective displacement with reference to the electric apparatus body which is moved together with the foundation. It is possible to cope with the displacement by freely causing a dislocation or a rotation in an arbitrary direction thanks to the action of the joints 8, 9.</p> |
