Title:
ガス絶縁開閉装置
Document Type and Number:
Japanese Patent JP7278997
Kind Code:
B2
Abstract:
To provide a gas insulation switchgear which solves problems that, when metal foreign matters are mixed or generated inside the gas insulation switchgear, dielectric strength is significantly reduced when reaching a high voltage conductor if the foreign matters are present inside a tank; on the other hand, when a coating is to be provided inside the tank in order to suppress the floating of the foreign matters, large variations in a voltage and an electric field where the effect of a coating material is generated are large.SOLUTION: In a gas insulation switchgear according to the present invention, an inner surface of a tank in which a main circuit conductor is installed is provided with a coating layer of a first layer, and an upper part of the first layer is further provided with a coating of a powdery nonlinear resistance material.SELECTED DRAWING: Figure 1
Inventors:
Atsushi Nukaga
Takahiro Nishimura
Takahiro Nishimura
Application Number:
JP2020118901A
Publication Date:
May 22, 2023
Filing Date:
July 10, 2020
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H02B13/035; H02B13/055; H02G5/06
Foreign References:
| WO2015136753A1 | ||||
| WO2015198420A1 |
Attorney, Agent or Firm:
Polaire Patent Attorneys Corporation