Introduction to Aluminum Busbars
Release Time:
Jan 05,2022
An aluminum busbar refers to a shared path where multiple devices are connected in parallel branches. In a computer system, it refers to a shared high-speed path connecting multiple computers in parallel, used for data transmission between these computers, but only one device can send data at a time.
With the advent of modern engineering facilities and equipment, electricity consumption in various industries has rapidly increased, especially with the emergence of numerous high-rise buildings and large factories. Traditional cables as power transmission conductors can no longer meet the requirements of high-current transmission systems. The parallel use of multiple cables brings many inconveniences to on-site installation, construction, and connection. Pluggable aluminum busbar trunking, as a new type of power distribution line, has emerged. Compared with traditional cables, it fully demonstrates its superiority in high-current transmission. At the same time, due to the adoption of new technologies and processes, aluminum busbars are greatly reduced. The contact resistance and temperature rise at the junctions of the groove ends and branch points are reduced, and the aluminum busbar trunking uses insulating materials, thereby improving the safety and reliability of the aluminum busbar trunking and making the entire system more perfect.
An aluminum busbar trunking consists of a system composed of a metal plate (steel plate or aluminum plate) as a protective shell, conductive bars, insulating materials, and related accessories. It can be made into standard-length segments with plug-in junction boxes at intervals, or it can be made into a power-feeding enclosed aluminum busbar without junction boxes in the middle, which brings benefits to power supply, installation, and maintenance.
According to the development of insulation methods, aluminum busbar trunking has gone through three generations: air-plug aluminum busbar trunking, solid insulation plug aluminum busbar trunking, and high-strength composite insulation plug aluminum busbar trunking.
Aluminum busbars have high current density, low resistance, and low skin effect, and no capacity reduction is needed. Low pressure drop means low energy loss, saving users investment. For cables, because the cable core is made of multiple thin copper wires, its root area is larger than the root area of an aluminum busbar with the same current level. And its“Skin effect” is serious, reducing the rated current, increasing the pressure drop, and easily generating heat. The line energy loss is large, and it is easy to age.
The metal enclosed shell of the aluminum busbar trunking protects the aluminum busbar from mechanical damage or animal damage. Installing plugs in the power distribution system is safe. The shell can be grounded as a whole, and the grounding is very reliable. CablePVC shells are easily subject to mechanical damage, and the power should be cut off when installing cables. If there is a mistake, it will be very dangerous.
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