An outdoor switch platform on a pole with a zero-potential surface layer solid-sealed pole

Abstract

The invention discloses an outdoor pole top switch platform with zero-potential surface layer solid-sealed polar poles. Incoming line sleeves and outgoing line sleeves are arranged on the outer side of a metal shell. The shell is internally provided with the solid-sealed polar poles. The solid-sealed polar poles are connected with the incoming line sleeves and the outgoing line sleeves in a sealed mode. Due to the fact that metal or semiconductor layers on the surfaces of the solid-sealed polar poles are effectively grounded, it is ensured that the surface layer of a switch is in zero potential when the switch is turned on. A vacuum arc-extinguishing chamber and a cavity are formed inside each solid-sealed polar pole, wherein a static contact of the vacuum arc-extinguishing chamber is fixedly connected with the outgoing line end inside the solid-sealed polar pole, a movable contact of the vacuum arc-extinguishing chamber is flexibly connected with the incoming line end inside the cavity, an insulation pulling rod is installed inside the cavity, the inner end of the insulation pulling rod is connected with the movable contact, the outer end of the insulation pulling rod is connected with a transmission mechanism, and the outer end of the insulation pulling rod and the outer opening of the cavity are sealed through an insulation rubber part. The switch is small in size and high in reliability. The outdoor pole top switch platform can be applicable to a pole top autorecloser, a circuit breaker and a load switch, can be matched with various types of operating mechanisms, and meets the requirements of various power distribution automation schemes.

Description

technical field [0001] The invention relates to an outdoor pole-mounted switch platform, in particular to an outdoor pole-mounted switch platform with a zero-potential surface solid-sealed pole. Background technique [0002] Outdoor pole-mounted switches are one of the most widely used electrical equipment in power systems. In order to meet different application requirements, there are various forms of pole-mounted reclosers, circuit breakers and load switches on the market. Outdoor pole-mounted switches are The environment is harsh, due to factors such as wind and sand, salt spray, condensation, etc., the insulation layer is corroded and worn, or the creepage distance is reduced, resulting in insulation damage and accidents. [0003] In the prior art, outdoor medium-voltage pole-mounted switches usually use solid insulation or composite insulation. Since the potential on the surface of the pole is not zero during the operation of the switch, the high potential of the primar...

AI Technical Summary

Problems solved by technology

[0005] For the outdoor pole-mounted switch in the above-mentioned prior art, due to the harsh environment during operation, the corrosion and wear of the insulating layer due to factors such as wind and sand, salt spray, and condensation, or the reduction of creepage distance, resulting in insulation damage and accidents The present invention provides an outdoor pole-mounted switch platform with a zero-potential surface layer solid-sealed pole

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