Solid insulating fully enclosed looped network cabinet

Abstract

The invention discloses a solid insulated totally-enclosed ring main unit, which comprises at least a line of leading-in unit and at least a line of leading-out unit, and each line of switch comprises a 3-phase high-voltage vacuum switch unit. The high-voltage vacuum switch consists of a housing fixed inside a box body, and a main switch and an isolator arranged in the housing, wherein, the housing is made of epoxy resin, and a copper joint pin of the main switch and the outside of a busbar connected with the copper joint pin are coated with silicon rubber layers. The ring main unit of the invention adopts a totally enclosed design, which causes the ring main unit to have smaller volume and compact structure, and to be safe and reliable; the probability of leakage and discharge is low, thus improving the insulation class, and the ring main unit has obvious effect on saving energy and materials; air, moisture, dust and hot and cool air sources are isolated, which effectively retards the corrosion of a power source body, stabilizes the output of supply voltage, decreases the times of the device maintenance, reduces expense cost and prolongs the service life of the ring main unit.

Description

technical field [0001] The invention relates to a circuit device of an AC main line or an AC power distribution network, in particular to a solid-insulation fully-enclosed ring network cabinet. Background technique [0002] In the prior art, there is a gas-insulated ring network cabinet, which uses gas to seal and insulate the high-voltage vacuum switch; because the gas SF6 used is toxic after arc extinguishing, and is easy to leak, the metal box is large in size, and requires tightness. High, complex processing technology, resulting in high cost of the box, complicated maintenance and testing, and insufficient protection level, and the charged body 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 injury accident. Contents of the invention [0003] The object of the present invention is to provide a non-toxic, harmless, solid-insulated fully-enclosed ring network cabinet w...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, there is a gas-insulated ring network cabinet, which uses gas to seal and insulate the high-voltage vacuum switch; because the gas SF6 used is toxic after arc extinguishing, and is easy to leak, the metal box is large in size, and requires tightness. High, complex processing technology, resulting in high cost of the box, complicated maintenance and testing, and insufficient protection level, and the charged body is exposed and corroded by air and dust, which may easily cause corrosion of the charged body, reduce the insulation level, and easily cause personal injury accident

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