Power busbar

Abstract

The invention belongs to the technical field of electric power engineering, and specifically relates to a power busbar. The power busbar comprises a busbar body; a power porcelain insulator is arranged in the middle of the busbar body, and a fixing screw is arranged at one end, close to the busbar body, of the power porcelain insulator; a fixing hole is arranged at the position, corresponding to the fixing screw, of the busbar body, and the fixing screw is matched with the fixing hole to position the busbar body; the fixing screw is in threaded connection with a nut used for fixing the busbarbody; both sides of the busbar body close to the fixing screw are provided with copper plates, and the copper plates are used to reduce the resistance of the busbar body at the corresponding positionof the power porcelain insulator; and the fixing screw penetrates through through holes on the copper plates and then is matched with the nut. According to the power busbar provided by the invention,due to the fact that the copper plates are additionally arranged on the two sides of the busbar body, the resistance of the busbar body is reduced, the heating temperature is reduced when currents flow through the busbar body, the temperature of water vapors near the busbar body cannot rise and then the power porcelain insulator is pre-cooled and liquefied, so that the insulation performance of the power porcelain insulator is reduced.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering, in particular to a power busbar. Background technique [0002] The busbar refers to the copper or aluminum bar that connects the master switch in the electrical cabinet and the switches in each branch circuit in the power supply system. The surface is insulated. The main function is to be used as a wire. [0003] The busbar is sometimes called the busbar, which is the name of the conductive material on the power distribution equipment. The cabinet is then connected to the main power switch and then connected to each branch switch. [0004] High and low voltage switch cabinets are generally used for power generation, transmission, distribution, power conversion and consumption in power systems, mainly for on-off, control and protection. , while the voltage level of the low-voltage switchgear is 380V-660V. Copper / aluminum bars are often used in power switch cabinets. [0005]...

AI Technical Summary

Problems solved by technology

[0006] In order to make up for the deficiencies of the existing technology, the busbar will emit heat when it is used for power transmission in the power distribution cabinet. After the heat is transferred to the air near the busbar, the temperature of the water vapor in the air will increase. When the water with a higher temperature When the steam encounters the low-temperature power porcelain bottle, it is easy to liquefy into water droplets on the power porcelain bottle. After the water droplets mix with the dust on the power porcelain bottle, the insulation performance of the power porcelain bottle will be reduced, and the current on the busbar will easily break down the insulation of the power porcelain bottle. protection, causing potential safety hazards, a power busbar proposed by the present invention

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