A Protection Method for Asynchronous Motor

Abstract

The invention belongs to the technical field of circuit protection, in particular to a protection method of an asynchronous motor. The high-voltage circuit breaker protector used in the method comprises a frame body, a driving module and a driven module. The upper and lower surfaces of the frame body are respectively provided with two active modules; The frame is provided with a driven module; Asthe voltage increase, heat is generated to heat mercury, the T-shape insulating rod is moved upward to make the first contact disconnect from the second contact, the electromagnetic generator is stopped from supplying power, the brake rod is moved downward to drive the upper bearing plate and the lower bearing plate to do opposite movement, and the two electric contact balls are separated under the action of the elastic rope, so that the main circuit is disconnected; When the temperature returns to normal, As mercury contract more slowly, the shrinkage of mercury is accelerated through the elastic force of the first spring and the gravity of the T-shaped insulating rod so that the first contact and the second contact are connected, the electromagnetic generator is normally powered, and thebrake rod is moved upward to drive the upper bearing plate and the lower bearing plate to move in opposite directions, so that the two electric contact balls are contacted, thus realizing the automatic circuit opening and closing.

Description

technical field [0001] The invention belongs to the technical field of circuit protection, in particular to a method for protecting an asynchronous motor. Background technique [0002] Circuit protection is mainly to protect the components in the electronic circuit from being damaged under the conditions of overvoltage, overcurrent, surge, electromagnetic interference, etc. With the development of science and technology, power / electronic products are becoming more and more diverse and complex. The applied circuit protection components are no longer the simple glass tube fuses of the past. The usual protection devices include varistors, TVS, gas discharge tubes, etc., and have developed into a wide variety of emerging electronic component fields. [0003] A circuit breaker is a circuit breaker that can automatically cut off the circuit when a serious overload or short circuit or undervoltage occurs in the circuit or electrical components. Its function is equivalent to a combi...

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Problems solved by technology

[0005] This technical solution can ensure the safe disconnection of the circuit, and can detect the voltage and current values ​​in the circuit at the same time by controlling the disconnection of the circuit through a variety of power components, but the operation of the circuit breaker is too complicated through the control circuit of multiple components, and requires staff to operate, so it cannot be realized automatically. operation, the high cost of various original components is not conducive to mass production

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