Pole-mounted circuit breaker with built-in isolating switch

Abstract

The invention discloses a pole-mounted circuit breaker with a built-in isolation switch, and belongs to the technical field of power generation, power transformation or power distribution. A circuit breaker switch, an isolating switch and a transmission mechanism of the isolating switch are arranged in the same sealed box body, the circuit breaker switch comprises an arc extinguishing chamber, anarc extinguishing chamber static end copper guide rod and a contact spring assembly, the isolating switch comprises a moving contact and a static contact, the transmission mechanism comprises a synchronizing shaft, an output crank arm, an insulating pull rod and a rotating assembly, and the whole main loop is loaded in an insulating box. The problems that a common pole-mounted circuit breaker is small in opening distance and cannot serve as a reliable fracture, and an isolation switch and a pole-mounted load switch cannot remove short-circuit faults are solved, rapid mechanical linkage of thecircuit breaker and an isolation knife is achieved, and the condition of achieving the rapid reclosing function is achieved.

Description

technical field [0001] The invention discloses a pole-mounted circuit breaker with a built-in isolating switch, relates to intelligent power distribution equipment, and belongs to the technical field of power generation, power transformation or power distribution. Background technique [0002] With the comprehensive promotion of smart grid construction, it is very important to improve the reliability and power supply quality of urban distribution network. The construction of urban power distribution requires that the conductors should not be exposed, the wires should be sheathed wires, and the pole-mounted switches should use cable outlets. The outdoor isolating switch and pole-mounted circuit breaker used together are the most widely used switchgear in the urban distribution network. How to improve the existing pole-mounted circuit breaker to meet the construction requirements of the urban distribution network is an urgent problem to be solved . [0003] At present, in th...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to address the above-mentioned shortcomings of the background technology and provide a pole-mounted circuit breaker with a built-in isolating switch. The isolating knife is built into the pole-mounted circuit breaker to realize a linkage design, which not only eliminates Various disadvantages, at the same time, the isolation knife switch and the vacuum interrupter are connected in series and asynchronously, and at the same time, it has various functional requirements for breaking switches, boundary switches, and contact switches, and also meets various requirements for circuit breakers, load switches, and isolating switches. Performance requirements, realize the integration of primary equipment functionality and performance, embody the characteristics of miniaturization, standardization and interchangeability, and solve the technical problem that the existing pole-mounted circuit breaker with built-in isolating switch cannot realize the circuit breaker reclosing function

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