EP 3352193 A1 20180725 - CIRCUIT BREAKER
Title (en)
CIRCUIT BREAKER
Title (de)
SCHUTZSCHALTER
Title (fr)
DISJONCTEUR
Publication
Application
Priority
JP 2015076243 W 20150916
Abstract (en)
According to the present invention, a direct-current circuit breaker for a high voltage is obtained, which can reliably interrupt current ranging from a low current that is lower than or equal to 1 kA to a ground-fault current exceeding 1 kA. A circuit breaker includes: a first switching contact (1a, 1b) that opens and closes a direct-current electrical path (200); a second switching contact (2a, 2b) that is connected in series with the first switching contact (1a, 1b) and opens and closes the direct-current electrical path (200); and a semiconductor switch (4a, 4b) that is connected to both ends of the second switching contact (2a, 2b) such that the semiconductor switch (4a, 4b) is in parallel with the second switching contact (2a, 2b) and that opens and closes the direct-current electrical path (200). When a closing operation is performed, the semiconductor switch (4a, 4b) is closed after the first switching contact (1a, 1b) and the second switching contact (2a, 2b) are closed, and when an interrupting operation is performed, the semiconductor switch (4a, 4b) is opened after the first switching contact (1a, 1b) and the second switching contact (2a, 2b) are opened.
IPC 8 full level
H01H 33/59 (2006.01); H01H 73/18 (2006.01)
CPC (source: EP KR)
H01H 9/541 (2013.01 - EP); H01H 9/542 (2013.01 - EP); H01H 33/59 (2013.01 - KR); H01H 33/596 (2013.01 - EP); H01H 73/18 (2013.01 - KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3352193 A1 20180725; EP 3352193 A4 20180926; EP 3352193 B1 20191211; CN 107710369 A 20180216; CN 107710369 B 20190618; JP 6369637 B2 20180808; JP WO2017046885 A1 20171207; KR 102010167 B1 20190812; KR 20180004812 A 20180112; WO 2017046885 A1 20170323
DOCDB simple family (application)
EP 15904074 A 20150916; CN 201580080942 A 20150916; JP 2015076243 W 20150916; JP 2017540387 A 20150916; KR 20177035780 A 20150916