Outdoor alternating-current anti-explosion 35-kV lightning arrester

Abstract

The invention relates to an outdoor alternating-current anti-explosion 35-kV lightning arrester. The lightning arrester comprises a hollow cylindrical epoxy pipe framework and a rubber outer sleeve arranged outside the epoxy pipe framework in a sleeving mode, the upper end of the epoxy pipe framework is provided with a nylon cock cover, and the lower end of the epoxy pipe framework is provided with a metal part; a lightning arrester core is arranged in the middle of the epoxy pipe framework, the inner side of the nylon cock cover is provided with an upper electrode connected with the lightning arrester core, the outer side of the nylon cock cover is provided with a cable connected with the upper electrode, and the inner side of the metal part is provided with a lower electrode connected with the lightning arrester core. The outdoor alternating-current anti-explosion 35-kV lightning arrester is small in size and weight, easy and convenient to install, good in protecting performance and high in mechanical strength; by adopting the composite insulated outer sleeve and a high-voltage cable outer-introduced structure, the product is high in sealing property, large in creepage distance and capable of being used in high-altitude and heavy-pollution areas; meanwhile, the lightning arrester has the anti-explosion function, and when the lightning arrester is damaged by any reasons, a disconnector can effectively avoid short-circuit accidents caused by lightning arrester explosion.

Description

technical field [0001] The invention relates to a lightning arrester, in particular to a 35kV outdoor AC explosion-proof lightning arrester. Background technique [0002] At present, the 35kV power distribution system in my country generally adopts a mixed method of overhead lines and power cable lines, that is, overhead lines are used for pole lines, and cable lines are used for incoming and outgoing lines of distribution stations and user incoming lines. Direct connection to overhead lines. [0003] Composite jacket gapless metal oxide surge arresters have been widely used in power transmission and distribution systems because of their small size, light weight, and many advantages such as overvoltage protection characteristics. However, due to the limitations in structural design and performance design of the metal oxide surge arrester with composite jacket used in the 35kV power distribution system, it cannot be quickly disconnected from the system when a fault occurs, an...

AI Technical Summary

Problems solved by technology

However, due to the limitations of structural design and performance design, the metal oxide surge arrester with composite jacket used in the 35kV power distribution system cannot be quickly disconnected from the system when a fault occurs, and there is a large potential safety hazard.

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