Environmentally friendly gas insulation switch cabinet

Abstract

An environmentally friendly gas insulation switch cabinet comprises a two-station isolation switch, a miniature vacuum environmental protection switch, a fuse cabin and an isolation switch observationdevice. The two-station isolation switch is form by assembling isolation static supports, isolation blades, vacuum arc-extinguishing chamber fixed contacts, insulation pull rods and isolation main shafts. The miniature vacuum environmental protection switch is mainly formed by assembling embedded poles, a contact pedestal, main shaft pull rods and an operation mechanism. Moving contacts of the vacuum arc-extinguishing chamber fixed contacts pass through grooves to be in contact with a table link contact finger. The fuse cabin is mainly formed by assembling a cabin body, a fuse, a 5-claw claw,an 8-claw claw and an insulation plug. The environmentally friendly gas insulation switch cabinet is reasonable in design, relatively simple in manufacturing process, small in volume, light in weight, stable in performance and reliable in motion, has a very high electrical safety performance, is a powerful ensure for power supply reliability and can reduce preconditions of user investment.

Description

technical field [0001] The invention relates to a medium-voltage switchgear for a power system, in particular to an environment-friendly gas insulated switchgear, which is a load switch-fuse combined electrical equipment controlled by a load switch and protected by a fuse. Background technique [0002] The switchgear is one of the key equipment in the power supply industry, and the load switch-fuse combination is particularly important as the protection equipment of the 10kV transformer. In the existing technology, the gas-insulated fully sealed equipment mainly uses SF 6 gas as an arc extinguishing and insulating gas, while SF 6 It is an unenvironmentally friendly gas with a strong greenhouse effect. It can also be decomposed into toxic products under the action of high-temperature arcs, which is no longer suitable for the development needs of the modern power industry. Contents of the invention [0003] The present invention aims at the switch volume of the current powe...

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Problems solved by technology

[0003] The present invention aims at the switch volume of the current power system is too large, the safety performance is poor, and the use of SF 6 Gas arc extinguishing and insulation have brought serious pollution to the environment, poor scalability, inconvenient installation, poor reliability, and the increase in manufacturing costs and operation and maintenance costs have brought certain economic losses to the country and power users. An environmentally friendly gas insulated switchgear with compact structure, small size, low operation and maintenance costs, convenient combination, and can significantly reduce the investment in power facilities

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