Vacuum circuit breaker on 24kV outdoor column

Abstract

The invention provides a 24kV vacuum circuit breaker on an outdoor column; the whole structure of the vacuum circuit breaker adopts an open structure with separated three phases and eliminates the threatening of 'internal condensation'; the insulated structure adopts the composite insulation of epoxy resin and silicon rubber; furthermore, the insulation structure of the vacuum arc distinguish chamber is improved, and the insulation performance of the circuit breaker is improved; a miniaturized spring operation mechanism increase the switch-closing force of the spring operation mechanism simultaneously so as to sufficiently meet the switch-closing speed requirement of the 24kV outdoor circuit breaker; a special vacuum arc distinguish chamber is adopted so as to lead the rated current of the circuit breaker, the short circuit on / off current and the on / off time of the short circuit on / off current to be improved; the vacuum circuit breaker of the invention aims at the 24kV high-voltage power transporting circuit, fills up the blank of the similar equipment in China, and has the advantages of high reliability, miniaturization, intellectualization, maintenance-free, and strong on / off capability of short circuit current.

Description

technical field [0001] The invention belongs to the field of electric power protection equipment, in particular to a 24kV outdoor post-mounted vacuum circuit breaker. Background technique [0002] With the rapid development of social economy and science and technology, urban and rural power grids have put forward higher and higher requirements for high-quality, high-reliability power supply. my country is currently investing huge sums of money in the construction and transformation of urban and rural power grids. With the sharp increase of power load in large and medium-sized cities in my country, and the problems of long power lines, old equipment, and high line loss in rural power grids have become increasingly prominent, the original 10kV power supply has been difficult to meet the power supply requirements, and its power supply distance is gradually exposed. Large, high line loss rate, voltage quality is difficult to meet the requirements and other weaknesses, and the use...

AI Technical Summary

Problems solved by technology

However, there is currently a shortage of outdoor circuit breaker equipment for 20kV voltage levels in China, and the technical conditions, insulation coordination, and test standards for foreign electrical equipment and power distribution devices have not yet adapted to my country's specific conditions.

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