How to purchase busbar trunking systems
Release Time:
Oct 25,2021
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. Dense busbars, as a new type of power distribution line, have emerged, fully demonstrating their superiority in high-current transmission. At the same time, due to the adoption of new technologies and processes, the contact resistance and temperature rise of the nodes connecting the branch ports at both ends of the dense busbar have been greatly reduced. Dense busbars use insulating materials, improving safety and reliability, and making the entire system more perfect. Let's take a look at purchasing dense busbars
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. High-density busbars, as a new type of power distribution line, have emerged, fully demonstrating their superiority in high-current transmission. At the same time, due to the adoption of new technologies and processes, the contact resistance and temperature rise of the nodes connecting the branch ports at both ends of the high-density busbar have been greatly reduced. High-density busbars use insulating materials, improving safety and reliability, and making the entire system more perfect. Below, we will look at the key points of purchasing high-density busbars.
1. Choose qualified products from reputable companies:
The quality of high-density busbar manufacturers varies greatly, and many use handmade production methods. When purchasing, it is necessary to thoroughly investigate the manufacturer's production scale, technical strength, worker quality, and production environment, especially the production environment. Because if insulation is carried out in an unclean space, there will be some conductive particles in the insulation layer. It doesn't matter at the beginning of operation, but over time it will cause insulation damage.
2. Pay attention to the conductor material of the busbar:
Currently, there are mainly three types: copper bars, aluminum bars, and copper-aluminum composites, with significant differences in Price. In addition to purity, the mechanical properties of the material after bending should also be considered. High-density busbars can be used in electrical equipment and meet the requirements of interface bonding strength. Different manufacturing processes result in different interface bonding strengths. Using mechanical pressure to bond copper and aluminum can only activate interface atoms to form atomic bonds. After heat treatment diffusion, the point bonding becomes surface bonding, but the diffusion depth is small. The interface bonding strength is not high. Processing high-density busbars under specific process conditions to allow copper and aluminum to fuse can form a uniform interface bonding with a certain thickness of the composite layer, thereby achieving higher interface bonding strength.
3. Choose an economical high-density busbar section:
Generally, the busbar cross-section should be selected according to the long-term working current. And check the short-term thermal stability and dynamic stability of the high-density busbar when passing through the short-circuit cable. Due to the influence of factors such as the resistance of the conductor and the metering effect of alternating current when multiple wires are close together, the dense busbar will generate heat when passing current. The allowable heating temperature for copper-aluminum bare busbars during long-term operation is70℃, but when the contact surface is reliably tin-plated, the allowable temperature can be increased to 85℃, allowing continuous heating. Due to temperature limitations, different materials and cross-sections of busbars give corresponding long-term allowable current values. When selecting a busbar section, the actual long-term working current of the high-density busbar should be less than the long-term allowable current value of the selected section busbar.
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