Improved intelligent ring main unit

Abstract

The invention discloses an improved intelligent ring main unit. The ring main unit comprises a switchgear body, the switchgear body is internally provided with a shared gas tank, the shared gas tank is internally provided with three shaft rods, the shaft rods are arranged vertically and sleeved by vacuum arc-extinguishing chambers respectively, an insulated separator plate is arranged outside the vacuum arc-extinguishing chambers, the lower ends of the shaft rods are provided with contact rods respectively, a fixed shaft is arranged in the switchgear body and sleeved by a sliding sleeve movably, the outer wall of the sliding sleeve is provided with disconnecting switches, the contact rods cooperate with the disconnecting switches respectively, and a three-phase wire outlet bushing is arranged in the switchgear body and positioned under the fixed shaft. The improved intelligent ring main unit is compact in structure, small in the whole size, flexible in operation, reliable in performance, long in service life, safe and environment-protective and can be mounted outdoor.

Description

technical field [0001] The invention relates to an improved intelligent ring network cabinet. Background technique [0002] With the economic development of the society and the continuous acceleration of the urbanization process, more requirements are put forward for the construction of the distribution network. A large number of newly built or expanded urban distribution network substations are limited by the building area, requiring the area occupied by the power equipment of the distribution network. The area is further reduced, the use of land resources is economical, and the intensity of land use is improved. In order to meet the compact and miniaturized requirements of distribution network substations for power devices, various compact electrical switchgears continue to emerge. And its major technological breakthrough mainly comes from the adoption of SF 20 years ago. 6 Application of gas insulation technology in compact and small equipment of medium voltage distribu...

AI Technical Summary

Problems solved by technology

Third, the sealed box works under pressure, which requires high sealing, difficult processing, and complicated inspection and maintenance. Once leakage occurs, the insulation will be damaged, which will easily cause personal injury or death.

However, due to the extremely high vacuum processing technology requirements for epoxy resin solid insulation, it is usually solidified by stirring and pouring two-component or multi-component liquid materials, which is easy to generate tiny bubbles during processing, and partial discharge when there is high voltage. Risk of insulation failure due to breakdown

At the same time, since the epoxy resin solid material is a brittle material, it is easy to be damaged during installation and transportation.

Moreover, solid waste is generated during its production process

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