Isolation vacuum circuit breaker

Abstract

The invention discloses an isolation vacuum circuit breaker, which mainly consists of a spring switch-on and switch-off operation mechanism, an operation mechanism box, an upper fixed contact seat, an insulating spindle, an isolation switch, an embedded pole, a transmission mechanism and a frame, wherein the spring switch-on and switch-off operation mechanism is arranged in the operation mechanism box; the operation mechanism box is fixed at one side of the frame; the lower end of the upper fixed contact seat is fixed on the frame; the inner side of the upper end of the upper fixed contact seat is opposite to the top end of the isolation switch; and the embedded pole is arranged on the frame through a square insulation clapboard on the embedded pole. In the invention, the operation mechanism box, the upper fixed contact seat and the like are all arranged on the frame and the spaces between components are reasonable, so that the isolation vacuum circuit breaker has a compact structure and a small volume; the switch-on, isolation and grounding functions of the switch are realized by the spring switch-on and switch-off operation mechanism which rotates the insulating spindle to make the isolation switch rotate around the rotating end of the insulating spindle; the isolation vacuum circuit breaker is reliable to operate; and the functions of a three-station isolation switch and the circuit breaker can be realized simultaneously.

Description

technical field [0001] The invention relates to a switchgear of a power system, in particular to an isolating vacuum circuit breaker in which a three-position isolating switch and a vacuum circuit breaker are integrated. Background technique [0002] Indoor high-voltage isolating switch is a high-voltage electrical appliance commonly used in power systems to switch power supply lines and isolate electrical equipment such as high-voltage busbars and circuit breakers to be overhauled from high-voltage power supply lines. Vacuum circuit breakers are used for power supply lines. A switch electrical equipment for breaking protection. At present, in the 12kV power distribution system, the known indoor high-voltage isolation and grounding switches only have two positions, that is, closing and opening positions, and the isolation switch and the vacuum circuit breaker are installed separately. A complex mechanical interlocking mechanism needs to be set between the two, which makes t...

AI Technical Summary

Problems solved by technology

At present, in the 12kV power distribution system, the known indoor high-voltage isolation and grounding switches only have two positions, that is, closing and opening positions, and the isolation switch and the vacuum circuit breaker are installed separately. Between them, a complex mechanical interlocking mechanism needs to be set up, which makes the switchgear bulky and complex in structure.

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