公开(公告)号：US20170194775A1

公开(公告)日：2017-07-06

申请号：US15325196

申请日：2015-07-16

申请人： Mitsubishi Electric Corporation

发明人： Soichiro KAINAGA ,  Ryoko KAWANO ,  Manabu YOSHIMURA ,  Takao TSURIMOTO ,  Shinichiro NAKAUCHI

IPC分类号： H02B13/01 ,  H02B13/045

CPC分类号： H02B13/01 ,  H02B13/045 ,  H02G5/065

摘要： A gas-insulated switchgear includes a grounded tank filled with insulation gas, a center conductor which is disposed in the grounded tank and to which a voltage is applied, an insulating support member which insulates and supports the center conductor, and a nonlinear resistive part disposed at least on a vertically lower side inner surface of the grounded tank and formed by an insulation material containing a nonlinear resistive material. If an electric field applied to the nonlinear resistive part is higher than an electric field value in a vicinity of a contact point between the nonlinear resistive part and a metallic foreign substance mixed in the grounded tank during an operation, a resistivity of the nonlinear resistive part at the center conductor side is lower than a resistivity at which a discharge delay time is equal to an electric field relaxation time constant.

公开(公告)号：US20190144703A1

公开(公告)日：2019-05-16

申请号：US16098268

申请日：2017-04-06

申请人： Mitsubishi Electric Corporation

发明人： Satoru SATO ,  Naoki YASUDA ,  Nobuo YOKOMURA ,  Ryoko KAWANO ,  Manabu YOSHIMURA ,  Shinichiro NAKAUCHI

IPC分类号： C09D163/00 ,  C09D7/62 ,  C09D7/40 ,  C09D7/45 ,  C09D7/20 ,  H02B13/045

摘要： A coating material of the present invention includes an insulating resin, and dispersion particles dispersed in the insulating resin. The dispersion particle includes a core particle containing zinc oxide as a main component and having nonlinear resistance, and a resin layer covering the surface of the core particle and having an average thickness being less than or equal to 5.0 μm. The coating material of the present invention is a coating material for coating an inner surface of a ground tank of a gas insulated switchgear.

公开(公告)号：US20220224086A1

公开(公告)日：2022-07-14

申请号：US17610717

申请日：2019-07-12

申请人： Mitsubishi Electric Corporation

发明人： Ryoko KAWANO ,  Manabu YOSHIMURA

IPC分类号： H02B13/055

摘要： A gas-insulated electrical apparatus according to the present invention comprises a grounded tank, a conductor placed inside the grounded tank, and an insulation gas filling the grounded tank. The insulation gas is a mixed gas comprising a first gas mainly responsible for insulation performance and having a global warming potential less than 6500, and a second gas having a small molecular weight, a low insulation performance, and a low global warming potential, as compared to the first gas. The insulation performance of the insulation gas is lower than the insulation performance of the first gas at a same pressure.