Switchgear
AssigneeHitachi, Ltd.
InventorsKeiichi Takahashi, Kenji Tsuchiya, Ayumu Morita, Masato Kobayashi, Daisuke Sugai
Life of this patent
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Abstract
A switchgear includes a chassis which is partitioned by metal earthed plates and includes a bus bar section located at a central portion, a switch section located below the bus bar section, a cable section located at a rear surface side, and a control section located at a front surface side; an air-insulated earthed disconnecting switch provided in the switch section; and a manipulating device. The switch section is separable from the chassis, and is configured as a case having a semi-closed structure which allows air to pass therethrough but prevents particles of oil and water from passing therethrough.
Claims6
A switchgear for connecting and disconnecting an electrical communication between a bus bar and a cable, comprising a chassis, a disconnecting switch including therein an electrode grounded electrically and air as an electrically insulating medium, and a drive device for manipulating the disconnecting switch, wherein the chassis has metallic plates grounded electrically and forming in the chassis cases of a bus bar section for receiving the bus bar, a switch section arranged under the bus bar section and containing therein the disconnecting switch and the drive device, a cable section arranged on a horizontal side with respect to the bus bar section to receive the cable and a control section arranged on another horizontal side with respect to the bus bar section to control the drive device,
- wherein the case of the switch section is removable from the chassis, and has a part through which the air is capable of passing between inside and outside of the case of the switch section, and a particle including at least one of oil and water is prevented from passing between the inside and the outside, and a remainder part of the case of the switch section is hermetically sealed.
Dependencies are inferred from the claim text.