High-capacity upper and lower isolated solid switch cabinet

Abstract

The invention discloses a high-capacity upper and lower isolated solid switch cabinet, and belongs to switch equipment of an alternating current distribution network. The high-capacity upper and lower isolated solid switch cabinet comprises at least one unit cabinet, and each unit cabinet comprises a three-phase high-voltage vacuum switch unit, an upper isolated switch unit, a lower isolated switch unit, a lower grounding switch unit, a bus bushing, a wire inlet and outlet bushing and an operation mechanism. The vacuum switch unit is arranged inside an insulating barrel, and the insulating barrel consists of an upper isolating cover, a lower isolating cover and an insulating cover. The upper and lower isolating covers are made of a polycarbonate material, and the insulating cover is made of an epoxy resin material; an upper isolating blade, a lower isolating blade and a lower grounding blade are arranged inside the upper and lower isolating covers respectively; the bus bushing and the wire inlet and outlet bushing are arranged at the upper and lower ends of the insulating barrel respectively; and the operation mechanism is arranged on the external side of a supporting plate on the uncovered surface of the insulating barrel. By placing electrical equipment of the switch cabinet inside the insulating barrel made of the solid insulating material and adopting a unit cabinet structural style, the switch cabinet is non-toxic and harmless, has a small volume, is convenient to install, is safe in use, saves the resources and prolongs the service life.

Description

technical field [0001] The invention relates to switchgear for an AC power distribution network, in particular to a large-capacity solid switchgear with upper and lower isolation. Background technique [0002] In the prior art, for gas-insulated ring main units, gas is used to seal and insulate high-voltage vacuum switches; because the gas SF6 used is toxic after arc extinguishing, has a greenhouse effect and is easy to leak. However, the charged body of the air-insulated unit switchgear is exposed and corroded by air and dust, which can easily cause corrosion of the charged body, reduce the insulation level, and easily cause personal casualties. Waste of resources. Contents of the invention [0003] The object of the present invention is to provide a large-capacity solid switchgear with upper and lower isolation, which is non-toxic, harmless, small in size, easy to install and safe to use, saves resources and prolongs the service life. [0004] In order to achieve the a...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, for gas-insulated ring network cabinets, gas is used to seal and insulate high-voltage vacuum switches; since the gas SF6 used is toxic after arc extinguishing, it has a greenhouse effect and is easy to leak

However, the charged body of the air-insulated unit switchgear is exposed and corroded by air and dust, which can easily cause corrosion of the charged body, reduce the insulation level, and easily cause personal casualties. waste of resources

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