Mixed current-limiting circuit breaker
A circuit breaker and hybrid technology, applied in the direction of circuits, overcurrent protection, electrical components, etc., can solve the problem that the electrical life of the circuit breaker cannot be guaranteed, so as to increase the recovery time of the medium and improve the utilization rate , The effect of simple circuit structure
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Embodiment 1
[0058] Such as figure 1As shown, the hybrid current-limiting circuit breaker includes a high-speed switch S, a fault shutdown circuit 1, a rated shutdown circuit 2, and an energy-absorbing branch 3. The energy-absorbing branch 3 is composed of a metal oxide varistor MOV (Metal Oxide Varistor ), the fault shutdown circuit 1 provides the shutdown short-circuit current, the rated shutdown circuit 2 provides the shutdown rated current, the fault shutdown circuit 1, the rated shutdown circuit 2, and the high-speed switch S are connected in parallel, and the fault shutdown circuit 1 and the rated The shutdown circuit 2 shares two diode valves D1 and D2 in reverse series.
[0059] The fault shutdown circuit 1 includes two sets of secondary tube valve branches, a first inductance capacitor and a thyristor valve branch;
[0060] Two sets of secondary pipe valve branches include: the first branch and the second branch;
[0061] The first branch includes a first diode valve D1 and a se...
Embodiment 2
[0068] Such as figure 2 , image 3 , Figure 4 As shown, the hybrid current-limiting circuit breaker includes a high-speed switch S, a fault shutdown circuit 1, a rated shutdown circuit 2, and an energy-absorbing branch 3. The energy-absorbing branch 3 is composed of a metal oxide varistor MOV (Metal Oxide Varistor ), the fault shutdown circuit 1 provides the shutdown short-circuit current, the rated shutdown circuit 2 provides the shutdown rated current, the fault shutdown circuit 1, the rated shutdown circuit 2, and the high-speed switch S are connected in parallel, and the fault shutdown circuit 1 and the rated The shutdown circuit 2 shares two diode valves D1 and D2 in reverse series.
[0069] The fault shutdown circuit 1 includes two sets of secondary tube valve branches, a first inductance capacitor and a thyristor valve branch;
[0070] Two sets of secondary pipe valve branches include: the first branch and the second branch;
[0071] The first branch includes a fi...
Embodiment 3
[0079] Such as Figure 5 As shown, the hybrid current-limiting circuit breaker includes a high-speed switch S, a fault shutdown circuit 1, a rated shutdown circuit 2, and an energy-absorbing branch 3. The energy-absorbing branch 3 is composed of a metal oxide varistor MOV (Metal Oxide Varistor ), the fault shutdown circuit 1 provides the shutdown short-circuit current, the rated shutdown circuit 2 provides the shutdown rated current, the fault shutdown circuit 1, the rated shutdown circuit 2, and the high-speed switch S are connected in parallel, and the fault shutdown circuit 1 and the rated The shutdown circuit 2 shares two diode valves D1 and D2 in reverse series.
[0080] The fault shutdown circuit includes a group of secondary tube valve branches, a group of thyristor valve branches and inductance and capacitance branches;
[0081] A group of diode valve branches is the first branch, the first branch includes the first diode valve D1 and the second diode valve D2, the fi...
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