Ablation-resistant disconnecting switch with polishable contact pieces

Abstract

The invention belongs to the technical field of disconnecting switches, and particularly relates to an ablation-resistant disconnecting switch with a polishable contact piece, which comprises a base, a first insulating column, a contact module, a protective shell, a speed change mechanism, a polishing mechanism, an electric piece mounting disc and a brake bar. Ablation points on the arc-shaped electric piece can be polished through the polishing mechanism, when the elastic electric piece is ablated, the U-shaped plate can be controlled to slide, the fixed swing plate can slide along with the U-shaped plate in the sliding process, and the fixed swing plate can be poked to swing by the corresponding adjusting poking plate in the sliding process, so that the ablated elastic electric piece is far away from the arc-shaped electric piece, and the elastic electric piece is fixed. And the other elastic electric sheet on the fixed swing plate is close to the arc-shaped electric sheet along with swing, that is, the other elastic electric sheet is used for replacing the ablated elastic electric sheet, and special polishing is not needed.

Description

technical field [0001] The invention belongs to the technical field of isolating switches, in particular to an ablation-resistant isolating switch with grindable contact pieces. Background technique [0002] Isolation switch, generally refers to a high-voltage isolation switch, that is, an isolation switch with a rated voltage of 1kV and above, usually referred to as an isolation switch, is the most used electrical appliance in high-voltage switching appliances, and its own working principle and structure are relatively simple. However, due to the large amount of use and high requirements for work reliability, it has a great impact on the design, establishment and safe operation of substations and power plants. The main feature of the isolation switch is that it can only divide and close the circuit without load current. The isolating switch is used for all levels of voltage, used to change the circuit connection or isolate the line or equipment from the power supply. Usua...

AI Technical Summary

Problems solved by technology

[0004] First, when some power failure occurs in the circuit, or the switch with arc extinguishing function is damaged, the voltage and current in the circuit will be higher than the set value, and an arc will appear when the isolating switch is opened, and the isolating switch does not have a special Arc extinguishing equipment

[0005] Second, after a long time of use, the contact piece will be oxidized or dust will appear, which will affect the electrical contact quality of the contact piece. The current isolating switch does not have automatic cleaning equipment, and manual cleaning is inconvenient

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