Title:
APPARATUS FOR PROTECTING DIRECT CURRENT BRANCH CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2010/150706
Kind Code:
A1
Abstract:
In an alternating current distribution board, circuit breakers (5) and a controller (6) are housed as internal devices, wherein: each of the respective circuit breakers (5) is provided for a corresponding one of branch lines into which master wiring for a direct current power supply branches; and the controller (6) controls opening and closing of the respective circuit breakers (5). Each of the circuit breakers (5) comprises: power supply side connection terminals (t1 and t2) connected to the master wiring; load side connection terminals (t3 and t4) to which wiring on the load side is connected; a semiconductor switching element (57) provided in the middle of an electrical path connecting the power supply side connection terminals (t1 and t2) to the load side connection terminals (t3 and t4); a current detecting resistance (56), which detects a current flowing in the electrical path; and an arithmetic circuit (60), which opens and closes the semiconductor switching element (57) in accordance with opening and closing control signals inputted from the controller (6), and which forcibly closes the semiconductor switching element (57) when a current value obtained based on a voltage across the current detecting resistance (56) exceeds a set current.
Inventors:
CYUZAWA TAKAAKI (JP)
KOSHIN HIROAKI (JP)
KOSHIN HIROAKI (JP)
Application Number:
PCT/JP2010/060362
Publication Date:
December 29, 2010
Filing Date:
June 18, 2010
Export Citation:
Assignee:
PANASONIC ELEC WORKS CO LTD (JP)
CYUZAWA TAKAAKI (JP)
KOSHIN HIROAKI (JP)
CYUZAWA TAKAAKI (JP)
KOSHIN HIROAKI (JP)
International Classes:
H02B1/40; H01H73/02; H02H3/087; H02J1/00
Domestic Patent References:
| WO2010013783A1 | 2010-02-04 | |||
| WO2009081912A1 | 2009-07-02 |
Foreign References:
| JPH03105813A | 1991-05-02 | |||
| JP2004282802A | 2004-10-07 | |||
| JP2000236621A | 2000-08-29 | |||
| JP2000215780A | 2000-08-04 | |||
| JP2004187424A | 2004-07-02 | |||
| JPS6276117A | 1987-04-08 | |||
| JPH10302585A | 1998-11-13 | |||
| JP2008043001A | 2008-02-21 | |||
| JP2010040207A | 2010-02-18 | |||
| JP2002252923A | 2002-09-06 | |||
| JP2005295791A | 2005-10-20 | |||
| JP2007252081A | 2007-09-27 | |||
| JP2008259254A | 2008-10-23 | |||
| JP2004234921A | 2004-08-19 |
Other References:
See also references of EP 2448075A4
Attorney, Agent or Firm:
NISHIKAWA, Yoshikiyo et al. (JP)
Yoshikiyo Nishikawa (JP)
Yoshikiyo Nishikawa (JP)
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