Bus-bar bushing for switch cabinets

Abstract

The invention discloses a bus-bar bushing for switch cabinets. The bus-bar bushing for switch cabinets comprises a bushing body and a bus-bar supporting plate. Grading rings are embedded in the bushing body, and the inner walls of bushing body are equipped with lugs. The bus-bar supporting plate is equipped with a bus-bar hole used for installing a bus-bar, and the bus-bar supporting plate is fixed on the lugs by screws. The bus-bar supporting plate is equipped with screw holes through which the screws pass, and the screw holes are circular arc-shaped. The bus-bar bushing for switch cabinets of the invention facilitates bus-bar installation in the bushing and enables the safety to be improved simultaneously.

Description

technical field [0001] The invention relates to a busbar bushing for a switch cabinet, in particular to a busbar bushing for a 40.5kV high-voltage switch cabinet. Background technique [0002] The busbar bushing is an insulation device for protecting the busbar between the high-voltage switch complete equipment cabinets. With the continuous development of high-voltage complete sets of equipment, customers' requirements for busbar bushings continue to increase. The busbar bushing is installed on the cabinet body, and the busbar needs to pass through the busbar bushing. In the prior art, the busbar can only be installed according to the position of the busbar hole opened by the busbar bushing, and cannot be installed. In terms of installing and adjusting the busbar, it cannot cope with the randomness and flexibility of on-site transformation. [0003] On the other hand, the busbar bushing is installed on the cabinet body, and the busbar needs to pass through the busbar bushi...

AI Technical Summary

Problems solved by technology

The busbar bushing is installed on the cabinet body, and the busbar needs to pass through the busbar bushing. In the prior art, the busbar can only be installed according to the position of the busbar hole opened by the busbar bushing, and cannot be installed. When installing and adjusting the angle of the busbar, it cannot cope with the randomness and flexibility of on-site transformation

[0003] On the other hand, the busbar bushing is installed on the cabinet body, and the busbar needs to pass through the busbar bushing. There is a voltage equalizing ring inside the busbar bushing, and the busbar must be connected to the voltage equalizing ring through a high-voltage lead wire. In order to obtain a better uniform electric field, in the prior art, the busbar is often connected to the grading ring through a lead wire, which is cumbersome to install, and the lead wire must be made longer during installation. The inner wall of the bushing is in contact, so that during long-term operation, it is easy to age, damage or even break the lead wire, resulting in partial discharge, hidden dangers of insulation, and poor safety performance

Images