| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve economical efficiency that is attained by downsizing a gas insulated switchgear entirely, by miniaturizing a disconnector, a grounding switch, or a conductor connection part applied to the gas insulated switchgear. <P>SOLUTION: This gas insulated switchgear is provided with composite insulating shields 17a, 17b integrally formed into one metal-dielectric member in which a high electric field surface part located in the vicinity of ends of openings is coated with a dielectric so as to cover the moving side and stationary side electrode parts 2a and 2b of the disconnector part 2 with the dielectric. In this switchgear, the electric field value of a shield end part can be reduced by using a metal shield of less than 0.6 in non-uniform constant before coating with the dielectric coated with the dielectrics 18a, 18b having a thickness of not more than approximately 30% of an interelectrode distance from a facing shield as those composite insulating shields 17a, 17b. Furthermore, by downsizing a shield diameter 15 and the interelectrode distance 18, the electric field value in the vicinity of the interelectrode in the disconnector part, the grounding switch, and the conductor connection part can be reduced effectively, and the entire miniaturization of the switchgear and the economy that is attainted by the miniaturization can be improved. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
