Outdoor environment-friendly compact totally-sealed high-voltage vacuum circuit breaker

Abstract

An outdoor environment-friendly compact totally-sealed high-voltage vacuum circuit breaker comprises a housing which is obtained through sealing a box body and a cover. The housing is provided with an inflating port. The box body is internally provided with three phase terminals, a circuit breaker operating mechanism and a control mechanism. The left side and the right side of the box body are provided with three phase wire inlet sleeves and three phase wire outlet sleeves which are arranged correspondingly. The left side and the right side of the box body are provided with extending chambers which extend to outside. Each extending chamber is internally provided with three compartments. Current transformers A and B in the compartments correspondingly sleeve the three phase wire inlet sleeves and the three phase wire outlet sleeves. The three phase terminals are respectively provided with an insulating box. Each insulating box is internally provided with an upper vacuum envelope with a static contact, and a lower insulating pull rod which is connected with a dynamic contact in the vacuum envelope. The current transformers A and B are respectively connected with a control mechanism. Furthermore a control mechanism transmits a control instruction to a circuit breaker operating mechanism for controlling an on state and an off state of the circuit breaker. The outdoor environment-friendly compact totally-sealed high-voltage vacuum circuit breaker has advantages of small size, compact structure, high convenience in mounting and debugging, high weather resistance, excellent environment-friendly performance and high economical performance.

Description

technical field [0001] The invention relates to an outdoor high-voltage vacuum circuit breaker, in particular to an outdoor environment-friendly compact fully-sealed high-voltage vacuum circuit breaker. Background technique [0002] At present, various outdoor high-voltage vacuum circuit breakers are widely used in urban and rural distribution networks. [0003] However, it is known that outdoor high-voltage vacuum circuit breakers that use environmentally friendly gases as insulating media do not have full sealing performance, and are easily affected by ultraviolet radiation, damp and heat aging, chemical corrosion, and condensation, resulting in poor weather resistance, which will affect the long-term operation of high-voltage distribution and power supply. Safe operation poses a serious threat; it is known that outdoor high-voltage vacuum circuit breakers with full sealing performance and good weather resistance use SF6 gas as the insulating medium. SF6 gas is a commercia...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current outdoor high-voltage vacuum circuit breaker has a large volume and is difficult to install outdoors, and the outdoor high-voltage vacuum circuit breaker that uses environmental protection gas as the insulating medium has poor weather resistance, which affects the safe operation of high-voltage power distribution; and the use of SF 6 Gas is used as an insulating medium and has good weather resistance, and there is SF in outdoor high-voltage vacuum circuit breakers 6 Gas recovery, processing and storage costs are high, and its environmental protection and economic efficiency are poor. For this purpose, an outdoor environmental protection compact fully sealed high-voltage vacuum circuit breaker is provided.

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