Drop-type gap lightning arrester suitable for high-resistance mountainous area and production process thereof

Abstract

The invention relates to a drop-type gap lightning arrester suitable for a high-resistance mountainous area and a production process thereof. The drop-type gap lightning arrester comprises a lightning arrester and a gap insulator, wherein the lightning arrester comprises a rainproof cap, a silicone rubber skirt sleeve and a drop device, the rainproof cap comprises an inverted U-shaped part and two sheet-shaped guide parts, the two sheet-shaped guide parts are connected with the lower portion of one end of the inverted U-shaped part, the other end of the inverted U-shaped part is connected with the upper end of an insulating rod, the drop device comprises a first conductive seat with a hook groove and a second conductive seat with a hook, the first conductive seat is connected with the lower end of the insulating rod, an arc-shaped guide groove is formed in the first conductive seat, a guide bulge matched with the arc-shaped guide groove is arranged on the second conductive seat, and the gap insulator comprises an epoxy rod, a gap insulator body, a high-voltage end electrode, an arc striking rod, a discharge screw rod and a second metal end head. The drop-type gap lightning arrester is high in operation reliability and stability and low in maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of lightning arresters, and in particular relates to a drop-type gap lightning arrester suitable for high-resistance mountainous areas and a production process thereof. Background technique [0002] The distribution of 10kV overhead distribution lines is wide, the lines are long, and the terrain is complex. However, the insulation level of 10kV distribution lines is low. Lightning overvoltage can cause flashover of insulators, resulting in power frequency freewheeling on the lightning flashover channel. wire. The main reason for disconnection is that the arc is built on the lightning flashover channel to form a power frequency continuous flow. The temperature of the arc root is very high, and the wire can be blown in a short time. Even if the wire is bare, if the current passing through is large, It is also possible to burn the wire. [0003] At present, the arc angle puncture clamp method adopted in the f...

AI Technical Summary

Problems solved by technology

However, since this method is to extinguish the arc naturally at the point where the arc current crosses zero, the arc extinguishing ability is poor, the arc extinguishing time is long, and re-ignition is possible, so the tripping rate of the line cannot be reduced, and it needs to cooperate with the automatic reclosing device

The traditional zinc oxide arrester and series gap arrester overvoltage protector can effectiv...

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