| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the size and cost of equipment in an insulated switching device while ensuring the dielectric strength thereof and to improve the charging current interrupting performance and exciting current interrupting performance. <P>SOLUTION: In this switching device, a field relaxation electrode is provided on the movable contact of a disconnector so that the movable contact can be connected to a fixed contact by changing the position of the field relaxation electrode between an open state and a closed state. By providing the field relaxation electrode on the movable contact of the disconnector, the ground dielectric strength and interpolar dielectric strength in the open state position can be improved to reduce the size and cost of the equipment. By improving the charging current interrupting performance and exciting current interrupting performance, the applicable range on system of the equipment can be extended. <P>COPYRIGHT: (C)2004,JPO</p> |
