Universal conversion switch with magnetic quenching function

Abstract

The invention discloses a universal conversion switch with a magnetic quenching function. The universal conversion switch comprises a square shaft, a contact box, a cam, a movable wafer, a static wafer, a movable contact base and a reset spring. The movable wafer is an elastic metal sheet, and a static contact matched with a movable contact is arranged at one end of the static wafer. According to the universal conversion switch, only one movable contact and static contact pair is arranged in one electric loop, contact and separation of the movable contact and the static contact are conducted by using the reset spring-back pressure of the movable wafer, the separation speed is high, the breaking capacity is high, arcing and burning phenomena are not prone to occurring in the contacts, the stability of the universal conversion switch is improved, and the service life of the universal conversion switch is prolonged. Meanwhile, magnetic steel is arranged at the part, close to the static contact, in the contact box, the magnetic field action direction of the magnetic steel enables electric arcs to move in the moving direction of the movable contact, the magnetic field generated by the magnetic steel enables the electric arcs which may be generated because of large current breaking between the movable contact and the static contact to be lengthened, arc extinguishing is accelerated, and therefore the breaking capacity and the reliability of the universal conversion switch are improved.

Description

Technical field [0001] The present invention involves a switch electrical device for electrical control circuit, especially a universal conversion switch (also known as auxiliary switch) in the secondary control circuit in high -voltage switch, which belongs to the field of switching electrical appliances. Background technique [0002] The universal conversion switch is used as a commonly used switch electrical applied in the secondary control circuit of high -voltage switch. The circuit that controls the low -voltage side loop of the low -voltage side is controlled to control the passing of the high -voltage side of the loop.High -voltage switching electrical control can also be accurately controlled, and many control signals can be accurately controlled in the switching electrical chain and relay protection system.Continuous, safe, and reliable operations play a vital role.Most of the current universal conversion switches use cam type structures, including square shafts, front ...

AI Technical Summary

Problems solved by technology

Similarly, during the closing process, under the action of the lateral force F1 given by the slope surface of the cam 4' on the moving contact seat 1', there is also a certain time difference in the synchronization of the two pairs of moving and static contacts 2' being connected, and there will always be If one pair of contacts contacts before the other, this will also cause different degrees of electric corrosion on the moving and static contacts 2'. The difference of the difference causes the contact to be virtual, thereby reducing its reliability and shortening the service life

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