Isolated switch main contact for circuit breaker combined electric appliance

Abstract

The invention is concerned with the insulating switch main touching piece of the breaker combining electric appliance, including: active touching groupware (-) with outer cover (-) outside and static touching piece (-); the static touching groupware (-) includes the supporter (-), and several active touching pin (-) on the electric cover (-) of the outer cover (-) that separates along the surrounding of the supporter (-) equally; sets the flat spring (-) between each active electric touching pin (-) and the inner wall of the outer cover pole; the static pin core (-) of the static touching piece (-) inserts into the through hole comprising of the active electric touching pin (-). The invention is fit for outdoors long-tern using.

Description

technical field [0001] The invention relates to a component of a high-voltage electrical appliance, in particular to a main contact piece of an isolating switch of a circuit breaker combined electrical appliance. Background technique [0002] The circuit breaker combination for outdoor use is composed of a circuit breaker and an isolating switch. The main contact of the isolating switch usually adopts a point contact with a leaf spring on both sides, or a surface contact with a spring on one side. These two structures are all exposed, and the moving parts are exposed to sunlight and rain, and are susceptible to mildew, electrical and chemical corrosion, which is not conducive to long-term safe operation. Practice has proved that after several months of operation of such products, the surface of the contact will be oxidized and moldy, resulting in an increase in contact resistance. At the same time, it will bring unfavorable factors such as grease solidification, sticking dus...

AI Technical Summary

Problems solved by technology

These two structures are exposed, and the moving parts are exposed to sunlight and rain, which are susceptible to mildew and electrical and chemical corrosion, which is not conducive to long-term safe operation.

Practice has proved that after several months of operation of such products, the surface of the contact will be oxidized and moldy, resulting in an increase in contact resistance. At the same time, it will bring unfavorable factors such as grease solidification, sticking dust, etc. Inconvenient, thus affecting the normal operation of the power line, greatly increasing the maintenance workload

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