| 摘要 |
<p>PURPOSE: To provide a switch with a built-in sensor which can correctly measure a voltage of a power distribution line irrespective of whether the switch is opened/ closed. CONSTITUTION: The switch is provided with a fixed contact element 4 set in a container 1 of the switch, a movable contact element 5, a cylindrical extinction body 7 of a conductive material surrounding the movable contact element 5 in a loop, a capacitive voltage divider 12 consisting of an inner cylindrical ring set in the outer periphery of the movable contact element 5 and extinction cylindrical body 7, an insulating material 14 in tight contact with the outer periphery of the inner cylindrical ring, and an outer cylindrical ring 15 in tight contact with the outer periphery of the insulating material 14, and a voltage detection device for detecting an output voltage of the capacitive voltage divider 12. The capacitive voltage divider 12 comprises a first inner cylindrical ring 16 and a second inner cylindrical ring 17 which are made of a conductive material, faced to an arc drive coil 10 wound in the outer periphery of the extinction cylindrical body 7 and arranged via an interval in an axial direction of the extinction cylindrical body 7 to surround the ring-shaped space, a conductor 18 connecting the second inner cylindrical ring 17 with the outer cylindrical ring 15, and a conductor 19 connecting the outer cylindrical ring 15 to the container 1.</p> |
