Busbar Material And Usage Analysis

Busduct is a type of transmission equipment that uses copper or aluminum bars as conductors, and is protected by insulation materials and casing to achieve current transmission and control. Compared with traditional cables and steel pipes, compact busduct has higher current carrying capacity and smaller volume, making them widely used in various occasions such as shopping malls, factories, and residential buildings. As a component of power transmission and distribution systems, it is used to provide efficient and reliable power supply in industrial and commercial buildings.

1.Comparison inconductivity performance

The resistivity of copper is 0.0185mm2/m, and the resistivity of aluminum is 0.0283mm2/m. If the conductivity of copper is 100%, it is accurate; The conductivity of industrial pure aluminum is about 60% of that of copper. Overall, for conductors with a unit cross-sectional area, the conductivity of copper conductors is 35% to 40% higher than that of aluminum alloy conductors, and their conductivity is even better.

2.Compared in terms of portability

From the perspective of conductor density, aluminum is 2.7g/cm ³， Copper is 8.9g/cm ³ ， The density of copper is about 3.3 times that of aluminum, which results in the weight of aluminum being lower than the mass of copper under the same current carrying capacity. Therefore, when using copper busduct, it is necessary to consider the load-bearing issues in the busbar structure and engineering installation.

3.Comparison of mechanical properties

Copper has good chemical stability, as well as high strength and hardness. Compared to aluminum busduct, it has better mechanical properties and resistance to high-temperature deformation. However, aluminum is more active, but after adding trace elements for heat treatment, it can be made into aluminum alloys to improve chemical stability. Some aluminum alloys also have much stronger strength than copper. From the perspective of mechanical strength and hardness, aluminum alloy conductors can achieve the mechanical performance advantages of copper conductors.

4.Comparison of conductor cross-sections

Due to considerations of resistance and strength, under the same current carrying capacity, the cross-sectional area of aluminum alloy conductors is larger than that of copper conductors, and copper busduct has more advantages when used in places with space limitations.

5.Comparison of economic performance

Copper resources in nature are relatively limited, and prices are relatively high; And aluminum resources are relatively more abundant, with lower prices. Taking copper busduct and aluminum alloy busduct with equivalent conductivity as examples, combined with the special process in the manufacturing of aluminum conductor busduct, the cost of aluminum conductor busduct is about 3/5 of that of copper with the same current carrying capacity.

6.Comparison of electrical energy losses

In today's world where energy efficiency is a concern, electrical energy loss is increasingly becoming a technical indicator of public concern in the daily use of various low-voltage devices. Electric energy loss is an important factor affecting the efficiency of busduct operation, which is usually proportional to the resistance of the busduct. Due to the lower resistance of copper conductors compared to aluminum alloy conductors, the electrical energy loss of copper busduct is lower than that of aluminum alloy busduct under the same rated current.