What is a bus duct? What is it for?

Bus duct is a common industrial electrical equipment, mainly used in industrial plants, high-rise buildings, commercial complexes, and public places such as rail transit. The bus duct was originally invented by Americans, but it was actually put into use in Japan and gradually became popular. China's infrastructure and industrial construction were later than those of European and American countries. However, in recent years, with the vigorous construction of infrastructure in China, coupled with favorable factors such as power system reform and urban-rural construction, bus ducts have also been widely used.

1、 What is a bus duct?

Bus duct is a closed metal device composed of copper and aluminum bus columns, used to distribute large power to various components of a distributed system. In indoor low-voltage power transmission mainline projects, wires and cables have been increasingly replaced. ——Taken from Baidu Baike

Simply put, bus duct is a part of the power supply system. Taking JCNC fire-resistant dense busbar trunking produced by Jichen Electric as an example, its busbar conductor uses 6mm thick TMY copper bars, with a layer of polyester film and a layer of ceramicized fire-resistant composite tape as insulation layer on the surface. It is placed in a layer shell made of A3 cold-rolled plate S2.0 material, fixed with rivets, wrapped with two layers of 15mm thick zirconium blankets around the layer shell, and then covered with 25mm fiberboard before being placed in the second layer shell. The JCNC series busbar trunking is a single row busbar with a specification of up to 3200A.

Bus ducts are divided into dense bus ducts, enclosed bus ducts, air insulated bus ducts, fire-resistant dense bus ducts, low-voltage enclosed dense bus ducts, poured bus ducts, high-voltage common box bus ducts and other series according to their performance and purpose.