| 摘要 |
<p>PURPOSE: A switch unit and a switch unit including the same are provided to improve cooling performance by employing a heat-radiating resin fin having a thickness difference in the longitudinal direction. CONSTITUTION: A solid insulator(2), such as epoxy, is connected to a grounded metal case(21). A vacuum valve(26), an earth disconnection part(27), a bus bushing(13), and a cable bushing(28) are integrally casted with the solid insulator. A vacuum container(8) is composed by connecting a fixed ceramic insulation compartment(29), a movable ceramic insulation compartment(30), a fixed end plate(31), and a movable end plate. A fixed conductor(5), a movable conductor(6), and an arc shield(25) are arranged inside the vacuum container. The fixed conductor is connected to a center conductor(15) of the cable bushing.</p> |
