The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2011
Filed:
Jul. 01, 2009
Takuya Kurogi, Hitachi, JP;
Kenji Tsuchiya, Hitachi, JP;
Takumi Ishikawa, Hitachi, JP;
Naoki Nakatsugawa, Hitachinaka, JP;
Takuya Kurogi, Hitachi, JP;
Kenji Tsuchiya, Hitachi, JP;
Takumi Ishikawa, Hitachi, JP;
Naoki Nakatsugawa, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A solid insulated bus switchgear including a cabinet having unit and bus rooms, first and second switching units, each having a circuit breaker, current transformer, zero-phase sequence current transformer, and instrument voltage transformer, main buses, a communication bus linked to the main buses, and connected to the first and the second switching units, and first and second leader buses, the first connected to the first switching unit, the second connected to the second switching unit. Each switching unit has a movable cart, the circuit breaker mounted on the cart, and a frame assembly. Two terminals are disposed on the back of the circuit breaker, one connected to a fixed electrode and the other connected to a movable electrode of the circuit breaker. The two terminals are connected to the communication bus and to the first or second leader bus through air bushings.