Invention Grant
- Patent Title: Switchgear
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Application No.: US15029464Application Date: 2014-10-02
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Publication No.: US09673005B2Publication Date: 2017-06-06
- Inventor: Hisashi Urasaki , Makoto Hirose , Masataka Sasaki , Yoichi Oshita , Yasuaki Aoyama
- Applicant: Hitachi, Ltd.
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Crowell & Moring LLP
- Priority: JP2013-227915 20131101
- International Application: PCT/JP2014/076437 WO 20141002
- International Announcement: WO2015/064296 WO 20150507
- Main IPC: H01H33/36
- IPC: H01H33/36 ; H01H33/59 ; H01H33/88 ; H02P6/00 ; H01H9/16 ; H01H47/02 ; H01H3/26 ; H02K41/02

Abstract:
The invention provides a switchgear that is capable of increasing a degree of freedom of a position of a moving arcing contact in a circuit breaker, does not require dimension management of components and a mechanism for adjusting a position of the moving arcing contact, and is capable of simplifying fabrication of components and assembly of devices and reducing cost. The switchgear according to the invention includes: a circuit breaker that is configured of a fixed arcing contact installed at a fixed-side conductor and a moving arcing contact installed at a moving electrode that opens and closes with respect to the fixed arcing contact; a linear motor that generates drive force for operating the moving arcing contact; a position detecting device that detects a position of a moving element of the linear motor; a contact detecting device that detects a contact state between the fixed arcing contact and the moving arcing contact; and a control device that sets a moving range of the moving arcing contact by controlling a voltage and a phase to be supplied to the linear motor based on the contact state between the fixed arcing contact and the moving arcing contact, which is detected by the contact detecting device, and position information of the moving element of the linear motor, which is detected by the position detecting device.
Public/Granted literature
- US20160268076A1 Switchgear Public/Granted day:2016-09-15
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