Circuit breaker tripping actuator

Abstract

The invention discloses a circuit breaker tripping execution device, which comprises a driving part, a lock rod, a first push rod and a second push rod, wherein the driving part can drive the lock rod to move; the lock rod is provided with a locking part locking the second push rod and a first push part driving the first push rod; the second push rod is provided with a locking receiving part connected with the locking part, an energy storage part for energy storage when the second push rod is in the locking position and a second push part, the energy storage part drives the second push rod when locking between the locking part and the locking receiving part is released, and the second push part is connected with the first push rod when the energy storage part drives the second push rod to move; the first push rod is provided with a first push receiving part connected with the first push part and a second push receiving part connected with the second push part; the first push part and the second push part drive the first push rod to move along the same direction to enable the first push rod to execute a tripping action. The force superimposed by the driving part and the energy storage part executes the tripping action, the tripping time is shorter, and the circuit breaker has a stronger breaking ability.

Description

technical field [0001] The invention relates to a protection device for an electric switch, in particular to a tripping execution device for a circuit breaker. Background technique [0002] Circuit breakers are commonly used components in the electrical field, used to switch on and off load circuits, and to protect circuits and equipment in abnormal conditions such as short circuits and overcurrents. A circuit breaker usually includes a contact system, an arc extinguishing system, an operating mechanism, a release, a housing and other components, among which the tripping actuator is an important part of the circuit breaker, which is used to release the holding mechanism and automatically disconnect the circuit breaker. Its performance will directly affect the breaking capacity of the circuit breaker. The performance of the trip actuator is mainly reflected in the size of the overall output force and the length of the overall action time. The greater the output force and the...

AI Technical Summary

Problems solved by technology

[0005] 1. There are many types of flux converters, and the cost of R&D and production management is high, which is not conducive to batch and automatic production

[0006] 2. The energy of the flux converter is provided by the capacitor in the controller, and the capacitor is charged by the transformer. Therefore, the increase in the power of the flux converter will require a larger capacity capacitor or more capacitors to supply energy, and at the same time A transformer with a larger specification is required to charge the capacitor, resulting in increased product cost and increased design difficulty

[0007] 3. After the capacity of the capacitor is increased, its charging time will become longer, which will directly affect the action time of the tripping actuator, that is, the breaking time of the circuit breaker will increase, and may even cause the controller to shut down

[0008] 4. In order to increase the rigidity of the components of the trip actuator device, each part will require more reinforcement structures, which will lead to an increase in the volume and quality of the trip actuator device

[0009] 5. The larger volume of the magnetic flux converter will increase the overall volume of the tripping actuator, making the circuit breaker product more bulky; it is also not conducive to the general use of the tripping actuator device in each frame

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