DC circuit breaker
A technology of DC circuit breaker and current sensor, applied in circuit devices, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve the problems of slow reclosing speed, etc.
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Embodiment 1
[0041] This embodiment provides a DC circuit breaker, which reversely charges the transfer capacitor after the DC circuit breaker is broken, so that the DC circuit breaker can be quickly reclosed.
[0042] The structure principle of the DC circuit breaker provided in this embodiment is as follows: figure 1 As shown, it includes the main circulation branch, the transfer branch and the MOV branch arranged in parallel, and the terminals A1 and A2 are the two ends of the parallel connection of the main circulation branch, transfer branch and MOV branch.
[0043] A mechanical switch S is arranged in the main flow branch, and the mechanical switch S is a high-speed mechanical switch; an arrester MOV for energy consumption is arranged in the MOV branch.
[0044] The transfer branch includes a transfer capacitor C1, a transfer inductance L, and a transfer switch. In this embodiment, the transfer capacitor C1, the transfer inductance L, and the transfer switch are arranged in series in...
Embodiment 2
[0068] This embodiment provides a DC circuit breaker. Compared with the DC circuit breaker provided in Embodiment 1 above, the difference between this DC circuit breaker is that no transfer inductance is set in the transfer branch, such as Image 6 As shown; the working principle of the DC circuit breaker provided in this embodiment is the same as that provided in Embodiment 1 above.
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