Title:
SWITCHGEAR
Document Type and Number:
Japanese Patent JP2019115138
Kind Code:
A
Abstract:
To alleviate electric field concentration in a periphery of foreign matters mixed in a metal container configuring a switchgear and suppress cracks of a resin layer provided on an internal wall surface of the metal container and roughness of a surface state.SOLUTION: A switchgear comprises: a high voltage conductor; a metal container having the high voltage conductor therein; and an insulation spacer for supporting the high voltage conductor in the metal container. A resin layer is provided on an internal wall surface of the metal container. The resin layer includes a nonlinear resistance material. On a surface of the nonlinear resistance material, a modified layer is provided. With the nonlinear resistance material, density is high on a surface at a vapor phase side of the resin layer of the entire resin layer.SELECTED DRAWING: Figure 6
Inventors:
FUJITA SHINJI
FURUI HIROKAZU
NUKAGA ATSUSHI
OTAKE ATSUSHI
FURUI HIROKAZU
NUKAGA ATSUSHI
OTAKE ATSUSHI
Application Number:
JP2017245976A
Publication Date:
July 11, 2019
Filing Date:
December 22, 2017
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02B13/055; H02B13/035; H02G5/06; H02G5/08
Attorney, Agent or Firm:
Polaire Patent Business Corporation