Soft connection device and solid-sealed pole using the device

Abstract

The invention relates to an embedded pole type circuit breaker, and particularly to a soft connection device and an embedded pole using the soft connection device. The soft connection device comprises a soft connection which is provided with a middle part which is used for fixed cooperation with an adapter conductor, and more than two wing parts which are arranged at the edge of the middle part and are used for fixedly cooperating with a lower wire outlet terminal. The soft connection device has advantages of high flowing capability and high heat radiation effect. The soft connection device is suitable for large-current embedded poles and can satisfy requirements for current flow and temperature increase of the large-current embedded pole.

Description

technical field [0001] The invention relates to a solid-sealed pole circuit breaker, in particular to a soft connection device and a solid-sealed pole using the device. Background technique [0002] In recent years, intelligence, miniaturization, and long life have gradually become the mainstream direction of switchgear development. Solid-sealed pole vacuum circuit breakers have gradually replaced open-type vacuum interrupters or vacuum circuit breakers with insulating cylinders covering the interrupter. , become a trend of switchgear. The solid-sealed pole vacuum circuit breaker uses epoxy resin to encapsulate parts such as the vacuum interrupter and conductive terminals into poles through the APG process, and then assembles them with the mechanism to form a circuit breaker. This structure not only reduces assembly links, but also improves Mechanical reliability improves the withstand voltage level of the interrupter, prevents the vacuum interrupter from being affected by ...

AI Technical Summary

Problems solved by technology

[0004] The existing small current solid-sealed pole realizes the connection between the lower outlet terminal and the moving conductive rod of the vacuum interrupter through a soft connection. The soft connection is located between the upper end surface of the lower outlet terminal and the lower end surface of the moving conductive rod. The end-face connection method is adopted between the terminal and the moving conductive rod of the vacuum interrupter. This method is simple in structure, easy to install and low in cost. There is a problem of low flow capacity, therefore, this connection method is not suitable for large current solid-sealed poles

[0005] Due to the limitation of the diameter of the end surface of the moving conductive rod in the vacuum interrupter and the heat dissipation of the energized conductor, the existing high-current solid-sealed poles mostly use the sliding contact connection method. Although this method solves the problem of high-current solid-sealed poles flow , but its structure is complex, the assembly process is cumbersome, the cost is high, and the heat dissipation effect is not good due to the compact structure

Therefore, there is no solid-sealed pole with high flow capacity, simple structure and good heat dissipation effect in the prior art

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