Isolating switch moving contact structure

Abstract

The invention provides an isolating switch moving contact structure which comprises a moving contact and an elastic slice, wherein the elastic slice is located above the right end of the moving contact, and the elastic slice is connected with the moving contact through a rivet located at the left end of the elastic slice. A spring and bolt coupling structure is replaced by the stainless steel elastic slice so that reliable and continuous compaction force is provided, and effective contact between the moving contact and a static end is ensured. Due to the fact that the moving contact and the elastic slice are both designed to be open, contact area is increased, contact resistance is reduced, the capacity for bearing current in the process of a short circuit and the capacity for bearing overcurrent are effectively improved, and the isolating switch moving contact structure has a good cooling capacity. Besides, the isolating switch moving contact structure is simple in structure, the quantity of parts is small, the isolating switch moving contact structure is fixed in a riveted mode, a torque spanner is not required for controlling tightening torque, production efficiency is high, and connection of contact surfaces is reliable and durable.

Description

technical field [0001] The invention belongs to the field of isolating switches, and in particular relates to a contact structure of an isolating switch. Background technique [0002] Isolating switch is the most widely used electrical appliance in high-voltage switching appliances. It mainly plays an isolation role in the circuit. Ensure the safety of maintenance personnel and equipment. Due to the large amount of use and high reliability requirements, it has a great impact on the design, establishment and safe operation of substations and power plants. The high-voltage AC isolating switch is an outdoor structure, most of which operate under relatively harsh outdoor conditions, are directly exposed to the atmospheric environment, and are easily affected by environmental and climatic conditions. [0003] At present, the heating fault of the conductive circuit is common in the operation of the isolating switch. The main reason is that the switch contact spring fails and the...

AI Technical Summary

Problems solved by technology

The high-voltage AC isolating switch is an outdoor structure, most of which operate under relatively harsh outdoor conditions, are directly exposed to the atmospheric environment, and are easily affected by environmental and climatic conditions

[0003] At present, the heating fault of the conductive circuit is common in the operation of the isolating switch. The main reason is that the switch contact spring fails and the contact is poor.

The current design of the moving contact of the isolating switch: the contact adopts a spring compression method, and the spring material is generally ordinary steel, and the exposed part is long and easy to be corroded; while the rotating part is the main circuit of the current, with a large flow, and the product is outdoors. After running for a period of time, the force of the spring will gradually fail, or even break, and the contact resistance of the switch contacts will increase and generate heat, which will cause the contacts to burn out

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