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Title:
DIRECT-CURRENT CIRCUIT BREAKER, MECHANICAL SWITCHING DEVICE FOR DIRECT-CURRENT CIRCUIT BREAKER AND SEMICONDUCTOR SWITCHING DEVICE FOR DIRECT CURRENT CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2018/230224
Kind Code:
A1
Abstract:
A direct-current circuit breaker according to an embodiment of the present invention has a mechanical switching part, a semiconductor switching part and a commutation device. The mechanical switching part has at least one mechanical switching unit and an insulating column supporting the at least one mechanical switching unit. The mechanical switching unit has at least one unitary switching part. The unitary switching part has a mechanical contact part, a sealed container, an operation rod and an operation mechanism. The mechanical contact part has a fixed contact and a mobile contact. The mechanical contact part is electrically insulated from the ground. The sealed container encloses the mechanical contact part and an insulating gas. The sealed container is electrically insulated from the ground. The operation rod is connected to the mobile contact. The operation rod extends from the interior of the sealed container towards the exterior. The operation mechanism is connected to the operation rod. The operation mechanism brings into contact and separates the mobile contact and the fixed contact. The operation mechanism has an electric potential identical to that of the mobile contact.

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Inventors:
KANAYA KAZUHISA (JP)
OHDA YOSHIAKI (JP)
ISHIGURO TAKAHIRO (JP)
Application Number:
PCT/JP2018/018571
Publication Date:
December 20, 2018
Filing Date:
May 14, 2018
Export Citation:
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Assignee:
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
H01H33/59
Domestic Patent References:
WO2013178787A12013-12-05
WO2011057675A12011-05-19
WO2013131582A12013-09-12
Foreign References:
JP2016187275A2016-10-27
JP2016004699A2016-01-12
JP2016162713A2016-09-05
JPH07123547A1995-05-12
JPS509074A1975-01-30
JP2000166031A2000-06-16
JP2016187275A2016-10-27
Other References:
See also references of EP 3640964A4
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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