Permanent magnet operating mechanism for circuit breaker
A technology of permanent magnet operation and circuit breaker, which is applied in the direction of the power device inside the switch, etc. It can solve the problem of poor matching of the dynamic characteristics of the output characteristics of the circuit breaker contact, the high speed at the end of the opening and closing operation, and the large eddy current of the moving iron core, etc. problem, to achieve the effect of improving the efficiency of the permanent magnet mechanism, reducing the final speed, and reducing the eddy current
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[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] Such as figure 1 , figure 2 Shown is a permanent magnet operating mechanism for a circuit breaker, including a stator yoke 1, a moving iron core 2, a driving rod 3, a closing buffer coil 9, an auxiliary opening coil 8, a main closing coil 7, a permanent magnet 10, The opening buffer coil 6 , the auxiliary closing coil 4 and the main opening coil 5 ; the moving iron core 2 is placed in the stator yoke 1 , and the driving rod 3 is fixed on the axial direction of the moving iron core 2 . Driven by the driving rod 3, the moving iron core 2 can rotate around the axis, so that the circuit breaker can switch between opening and closing.
[0018] The moving iron core 2 is generally made of low-carbon steel; the lower end surface of the moving iron core 2 is provided with a notch in the axial depth, forming an asymmetric structure on the upper and lower parts of the m...
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