Title:
臨界温度素子を利用する過電流防止用電磁開閉器
Document Type and Number:
Japanese Patent JP6779625
Kind Code:
B2
Abstract:
The present disclosure discloses an electrical switchgear configured to control an electro-magnet by using the electro-magnet, a critical temperature device, and an electro-magnet control unit without using a bimetal and a mechanical contact. The electro-magnet switches power applied through a power line in response to a flow of control current to a power device connected to a load side. In a critical temperature device, an output current value varies when a temperature of a heating wire, which is connected to the power line, exceeds a critical temperature by supply current flowing to the power device. An electro-magnet control unit, which is realizable with an SCR, allows a flow of control current of the electro-magnet to be generated or cut off in response to the output current value of the critical temperature device.
Inventors:
Gold bar
Cao Seiyu
Chung Jun Kei
Zhao Jin Toru
Cao Seiyu
Chung Jun Kei
Zhao Jin Toru
Application Number:
JP2016008565A
Publication Date:
November 04, 2020
Filing Date:
January 20, 2016
Export Citation:
Assignee:
Electronics and Telecommunications Research Institute
International Classes:
H01H71/40; H01H83/02; H02H5/04
Domestic Patent References:
| JP2003189460A | ||||
| JP2012029545A | ||||
| JP2011503895A | ||||
| JP4255414A | ||||
| JP57062723A | ||||
| JP2009539103A | ||||
| JP57104731U | ||||
| JP61054112U | ||||
| JP11238441A |
Foreign References:
| US20140210628 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Masakazu Ito
Masakazu Ito