Outdoor high-voltage solid insulation on-pole switch platform

Abstract

The invention discloses an outdoor high-voltage solid insulation on-pole switch platform, comprising a metallically sealed shell, wherein an epoxy resin and silicon rubber solid-sealed pole is arranged in the shell; a vacuum arc-extinguishing chamber and a cavity are arranged in the solid-sealed pole; a static contact of the vacuum arc-extinguishing chamber and a wire inlet end are fixedly connected in the solid-sealed pole; a moving contact of the vacuum arc-extinguishing chamber and a wire outlet end are softly connected in the cavity; an insulating pull rod is arranged in the cavity; the inner end of the insulating pull rod is connected with the moving contact; the outer end of the insulating pull rod is connected with a transmission mechanism; the outer end of the insulating pull rod and an outer port of the cavity are sealed through an insulating rubber piece; and a CT interface and / or a PT interface, a current transformer, a pressure sensor and the like are internally provided. The outdoor high-voltage solid insulation on-pole switch platform is small in size, low in cost, low in dangerousness, of a double anti-condensation structure and high in reliability. The outdoor high-voltage solid insulation on-pole switch platform is applicable to an on-pole circuit breaker and a load switch, can be adaptive with various types of operating mechanisms, and can meet the requirements of various power distribution automation schemes.

Description

technical field [0001] The invention relates to a circuit breaker and a load switch, in particular to an outdoor high-voltage solid insulation pole-mounted switch platform. Background technique [0002] The pole-mounted switch (circuit breaker and load switch, the same below) is one of the most widely used electrical equipment in the power system. In order to meet different application requirements, there are various types of pole-mounted circuit breakers and load switches on the market, such as: ZW8, ZW20, ZW32, FZW28, etc.; these switches have different structures, the components are not universal, and the interface with the operating mechanism is inconsistent. The switch can only be matched with a special operating mechanism, and the operating mechanism cannot be interchanged. [0003] In the prior art, due to the harsh environment, outdoor pole-mounted switches are prone to condensation, causing corrosion and insulation damage and causing accidents. The current solid-ins...

AI Technical Summary

Problems solved by technology

The electrical properties of SF6 gas are greatly affected by the uniformity of the electric field, impurities such as moisture, and the sealing performance. The requirements for the sealing structure, component structure and the quality of the SF6 gas itself are quite strict, and there are also hidden dangers of leakage.

In addition, SF6 gas does not meet environmental protection requirements, and its use should be restricted and eventually stopped. Composite insulation also has defects in terms of volume, cost, and anti-condensation.

Images