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Patent Searching and Data


Title:
GAS CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2019/150550
Kind Code:
A1
Abstract:
This gas circuit breaker has a sealed container, a first contactor part and a second contactor part, an operation mechanism, an insulating nozzle, a pressure accumulating means, and an electric field shield. The first contactor part and the second contactor part are brought into contact with each other in a closed electrode state, and separated from each other in an open electrode state. The insulating nozzle is displaced in conjunction with the first contactor part during the separation process of the first contactor part and the second contactor part. The insulating nozzle surrounds an arc discharge arcing between the first contactor part and the second contactor part. The electric field shield is attached to the insulating nozzle. The electric field shield has a floating potential during at least a portion of the separation process.

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Inventors:
MAJIMA AMANE (JP)
UCHII TOSHIYUKI (JP)
TANAKA TSUTOMU (JP)
KATO NORIMITSU (JP)
YASUOKA TAKANORI (JP)
SHIMAMURA AKIRA (JP)
MORI TADASHI (JP)
Application Number:
PCT/JP2018/003582
Publication Date:
August 08, 2019
Filing Date:
February 02, 2018
Export Citation:
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Assignee:
TOSHIBA KK (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
H01H33/91; H01H33/70
Foreign References:
JPS53160762U1978-12-16
JP2016219317A2016-12-22
JP2015002142A2015-01-05
JP2015011875A2015-01-19
JP2001319551A2001-11-16
JPH02168524A1990-06-28
JPH10199382A1998-07-31
US4420662A1983-12-13
JPS5231387A1977-03-09
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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