A bus duct with high comprehensive protection level

Abstract

The invention discloses a bus duct with high comprehensive protection level, which comprises a bus duct body and a connector. The bus duct body includes a bus bar and a metal shell arranged outside the bus bar. The connector includes a rectangular metal pipe body with openings at both ends. The metal pipe body includes a middle pipe body and end pipe bodies arranged at both ends of the middle pipe body. The first connecting flange, the outer wall of the end pipe body is provided with a second connecting flange matching the first connecting flange, the inner side of the other end of the end pipe body is slidingly connected with the outer side of one end of the metal shell, and the metal shell There is a third connecting flange on the outer wall of the connecting end between the body and the end pipe body, and a fourth connecting flange matching the third connecting flange is arranged on the inner wall of the connecting end between the end pipe body and the metal shell. The third connecting flange is located on the inner side of the fourth connecting flange, and the inner side of the middle part of the middle pipe body is provided with conductive copper plates for connecting the busbars on both sides.

Description

technical field [0001] The invention relates to the technical field of electric power transmission equipment, in particular to a bus duct with high comprehensive protection level. Background technique [0002] The fire-resistant busway is composed of a shell coated with fire-resistant paint, a busbar wrapped with fire-resistant mica tape and a bracket made of fire-resistant insulating material. There are multiple grooves on the bracket, and the grooves are built into the busbar and fixed. There is a bus duct connection box at one end of the bus duct, and a bus junction box inside the bus duct. Modern high-rise buildings and large workshops require huge electric energy, and in the face of the huge loads that require hundreds of thousands of amperes of strong current, safe and reliable conduction equipment must be selected. The busway was developed by the United States and is really practical in Japan. After application, the busway has been developed rapidly. The busway is a ...

AI Technical Summary

Problems solved by technology

The internal structure of the existing fire-resistant busway is only to install a layer of mica tape on the surface of the copper bar, then assemble it with steel plates, and finally spray a layer of fire-resistant paint on the surface of the steel plate. The fire-resistant effect of the refractory material is poor. When the current increases, the fire-resistant busway will deform and fail, which cannot guarantee its normal and stable power transmission in the event of a fire. Therefore, the existing fire-resistant busway can only maintain normal power transmission for a short time in the event of a fire.

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