| 摘要 |
PROBLEM TO BE SOLVED: To improve the limitations imposed on the prior art, in relating to a DC circuit breaker and a circuit breaking method thereof.SOLUTION: There are provided DC circuit breaker in which a high speed switching operation during a blocking operation can be improved and a DC current can be blocked in a more stable and efficient manner, and a circuit breaking method of the DC circuit breaker. The DC circuit breaker includes: a measuring portion for measuring a DC current conducted through a first circuit portion; the first circuit portion for conducting and blocking the DC current; and a second circuit portion for conducting and blocking the DC current which is bypassed from the first circuit portion and controlling the open/close operation of the first circuit portion according to a measuring result of the measuring portion. In the first circuit portion and the second circuit portion, switching elements included in each of the circuit portions are connected in a parallel configuration.SELECTED DRAWING: Figure 4 |
