Intelligent outdoor on-pole vacuum circuit breaker

Abstract

The invention relates to an intelligent outdoor on-pole vacuum circuit breaker and provides a novel outdoor on-pole vacuum circuit breaker which is large in volume and capable of meeting existing electric power system requirements and intelligent demands by adoption of a modular design and solid-sealed polar pole technology and an advanced on-line monitoring technology. The circuit breaker comprises a gas-filled casing, an electric spring operation mechanism, a cable duct, an insulation support, an electric flexible connection, a vacuum solid-sealed polar pole, a current transformer, an operating shaft, an insulation pull rod, a mechanism sealing cover and an aviation socket for secondary wiring, wherein the three-phase cable duct is arranged inside the gas-filled casing, the three-phase vacuum solid-sealed polar pole is also sealed side by side inside the gas-filled casing correspondingly, the conductive portion of the cable duct is connected with a dynamic end of a vacuum arc extinguish chamber through the electric flexible connection, and the cable duct and the solid-sealed polar pole are fixed on the insulation support. The circuit breaker has the advantages that the vacuum arc extinguish chamber which is the main component of the vacuum circuit breaker is a solid-sealed polar pole type chamber, so that the work amount during assembly is reduced, the product quality control is effectively improved, and the product manufacturing period is shortened.

Description

technical field [0001] The invention relates to a high-voltage switchgear, in particular to an outdoor intelligent pole-mounted vacuum circuit breaker. Background technique [0002] In the technical field of high-voltage electrical appliances, outdoor AC high-voltage vacuum circuit breakers (hereinafter referred to as circuit breakers) are outdoor power distribution equipment with a rated voltage of 12kV and three-phase AC 50Hz. It is mainly used for breaking and closing the load current, overload current and short-circuit current in the power system. It is suitable for protection and control in power distribution systems of substations and industrial and mining enterprises, and is more suitable for rural power grids, urban overhead lines and places with frequent operations. It is an essential terminal equipment for smart grid. At the same time, it meets the requirements of various distribution switching stations and substations. It has the characteristics of compact stru...

AI Technical Summary

Problems solved by technology

At present, most of the domestic manufacturers still adopt foreign technology in the 1980s, and the technical parameters still remain at the level of rated current 630A and rated breaking current 20KA. In addition, the technology is backward, processing, assembly, debugging are more troublesome, and the quality is difficult. control

At the same time, it is difficult to adapt to the requirements of large-capacity users and the development needs of future smart grids

Images