Application and Development of Low-Voltage Busbars
Release Time:
May 16,2022
The selection of low-voltage busbars is usually considered comprehensively from the following aspects. According to fire safety requirements, the insulating material has flame retardancy and heat resistance, does not release toxic gases at high temperatures, and should avoid the chimney effect in the structure. Densely insulated low-voltage busbars should be preferred. If air-insulated type is selected, fire-resistant partitions should be installed in each unit inside the pipe shell; in particularly important places, in order to maintain the emergency power supply in case of fire, choose fire-resistant material troughs. So, let's learn about the application and development of low-voltage busbar systems! Regarding the installation location of low-voltage busbars, the protection level of the box should be considered first, and then the building complex.
The selection of low-voltage busbars is usually considered comprehensively from the following aspects. According to fire safety requirements, the insulating material has flame retardancy and heat resistance, does not release toxic gases at high temperatures, and should avoid the chimney effect in the structure. Densely insulated low-voltage busbars should be preferred. If air insulation is selected, fireproof partitions should be set up between the units inside the pipe shell; In particularly important places, in order to maintain emergency power during a fire, choose fire-resistant material troughs. So, let's learn about the application and development of low-voltage busbar systems!
Regarding the installation location of the low-voltage busbar, the protection level of the box should be considered first, and then the influence of the building structure on the pipe shape, equipment support method, and span should be considered. For example, in indoor dedicated workplaces such as large-capacity substations, it can be usedIP30 to improve heat dissipation. To ensure safety, for general indoor operations, such as electrical lifting shafts and distribution rooms, bus ducts with an IP40 rating or higher should be selected; in damp indoor locations, or where splash protection is required, ensure that normal operation is possible after splashing, and bus ducts with an IP54 rating or higher should be selected.
Outdoor or special locations, such as fountains, anti-wave and anti-corrosion locations, in large areas where the bus duct can be insulated separately, the rated current should be comprehensively considered from the technical performance, heat dissipation effect, and Price of the reinforced shell bus duct. Currently, magnesium-aluminum alloy shells with good heat dissipation performance and low energy consumption are mostly selected for low-impedance, dense insulation bus ducts.
Application of Aluminum Conductors in Low-Voltage Busbars
Currently, under the influence of some old design ideas and manufacturing standards, many low-voltage busbar manufacturers still use copper as the main conductor of the tank. However, in recent years, the Price of copper materials has risen sharply, and costs have continued to rise, which will inevitably have a huge impact on the expansion of the manufacturer's market. Reasonable allocation of separated market resources and their Price factors, the transfer of domestic busbar product conductors from copper busbar data to aluminum busbar data has become a development trend of the product.
Busbars made of aluminum low-voltage busbars have been widely used in some prosperous countries abroad, and their manufacturing technology and processes are mature. In recent years, some domestic Brand bus manufacturers have provided good aluminum conductor buses, in engineering practiceAPP applications have been affirmed and praised by users and design departments, demonstrating their common advantages. This article attempts to further explore the possibility of aluminum conductors replacing copper conductors from the perspective of the physical, chemical, and electrical properties of copper and aluminum conductors.
A general economic analysis of copper conductor busbar troughs and aluminum conductor busbar troughs with equivalent conductor cross-sectional areas for low-voltage busbars shows that only the cost of the busbar conductor data was analyzed. Compared with busbars with the same conductivity of copper conductors, the former is only the latter.About 1/5. Due to the special process in the manufacturing process of aluminum conductor low-voltage busbars, the manufacturing cost is very high. The analysis shows that the comparison between the two is approximately 2.5:1.
The above is an introduction to the application and development of low-voltage busbar systems. If you need to know more, please Contact Us.
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