Series outdoor vacuum circuit breaker

Abstract

The invention relates to a series outdoor vacuum disconnector, including the operation gear, the three-phase couple axle, the insulation draw bar, the pillar porcelain sleeve, the extinction chamber propeller, the left and right turn arms, the left and right supereikonal pressure spring set, the left and right conducting band, the circuit transit box, the in and out wiring boards. The operation gear drives the insulation draw bar to move up and down through the three-phase couple axle, the insulation draw bar brings along the left and right turn arms to move through the extinction chamber propeller, the left and right turn arms makes the left and right extinction chamber porcelain sleeve extend and contract through the left and right pressure spring set.

Description

technical field [0001] The invention relates to an outdoor vacuum circuit breaker, in particular to a series-connected outdoor vacuum circuit breaker in which two vacuum circuit breakers are used in series. Background technique [0002] Outdoor vacuum circuit breakers are mainly used in occasions with a voltage level below 35KV, and those with a voltage level above 72.5KV are vacuum type, without any filling material in the porcelain sleeve of the arc extinguishing chamber, and can cooperate with the permanent magnet mechanism, which is still a blank. For circuit breakers with a voltage level above 72.5KV, the outdoor oil-rich circuit breakers produced by the former Soviet Union technology were used in my country in the early stage, and the oil-less circuit breakers were used after transformation in the later period. After the 1990s, major manufacturers successively introduced foreign technology to adopt sulfur hexafluoride circuit breakers. The structures of the above thre...

AI Technical Summary

Problems solved by technology

The structures of the above three circuit breakers are divided into two types: column type and box type. The arc is extinguished by transformer oil or sulfur hexafluoride gas. The operating mechanism mostly adopts a spring mechanism. The life is short, only 3000 times, and the oil circuit breaker is easy to cause explosion, which has been basically eliminated

If the seal of sulfur hexafluoride circuit breaker is not good, it will cause gas leakage. If the air pressure is lower than 0.3Mpa, it will endanger personal safety and pollute the environment. The World Environmental Protection Organization has called for the use of sulfur hexafluoride gas in electrical equipment as little as possible.

Images