Full-insulated full-enclosed compact type outdoor vacuum circuit breaker

Abstract

The invention discloses a full-insulated full-enclosed compact type outdoor vacuum circuit breaker and relates to the fields of protection and control technologies in the distribution systems of industrial and mining enterprises and converting stations. The outdoor vacuum circuit breaker comprises a pole of a connection; the upper end of the pole is hermetically connected with an upper wire seat; a feeding cable clamp is arranged in the upper wire seat; one side of the pole is hermetically connected with a lower wire seat; a discharging cable clamp is arranged inside the lower wire seat; a vacuum arc-extinguishing chamber is arranged in the inner chamber of the pole; and the upper of the vacuum arc-extinguishing chamber is connected with the inner end of the feeding wire cable clamp. According to the full-insulated full-enclosed compact type outdoor vacuum circuit breaker, two joints become to be one joint, the upper discharging seat and the lower discharging seat are all sealed inside the pole, and an external connection cable can be directly inserted inside the pole, so that the exterior of the pole does not have an exposed primary conductive part, and the insulation property is greatly improved.

Description

technical field [0001] The invention relates to the technical field of protection and control in power distribution systems of substations and industrial and mining enterprises. Background technique [0002] The existing 10kV outdoor AC high-voltage vacuum circuit breaker is used for breaking and closing the load current, overload current and short-circuit current in the power system of the distribution network. Key institutional features: [0003] 1. The structure of the existing outdoor vacuum circuit breaker body is a box three-phase pillar type, which is mainly composed of six parts: a conductive arc extinguishing system, an insulation system, a transmission system, an operating mechanism, and a housing. Due to the large number of mechanical parts, the failure rate is high; [0004] 2. The pole is divided into upper and lower sections, and there is a gap in the middle part, so the inside of the pole is easy to get damp; [0005] 3. The vacuum interrupter is placed in ...

AI Technical Summary

Problems solved by technology

Due to the large number of mechanical parts, the failure rate is high;

[0004] 2. The pole is divided into upper and lower sections, and there is a gap in the middle part, so the inside of the pole is easy to get damp;

[0005] 3. The vacuum interrupter is placed in the pole, and there is an air gap between the vacuum interrupter and the inner wall of the pole, which is prone to flashover;

[0006] 4. 200 / 5~600 / 5 current transformers can be installed according to user needs. There is a gap between the lower outlet and the pole connection position. If it is placed outdoors for a long time, rainwater will seep into it, and the insulation performance will decrease.

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