What are R10, R20, R50, and R80 in the busbar drawing?

In the mysterious world of electrical engineering, busbar drawings are like precise navigation maps, guiding the path of power transmission. The R10, R20, R50, and R80 symbols hide key design secrets. Today, we will embark on a wonderful exploration journey to unveil these mysterious symbols and reveal their important role in electrical engineering.

First of all, we need to make it clear that in mechanical drawings and electrical drawings, “R” usually represents radius. Therefore, R10, R20, R50, and R80 represent the sizes with radii of 10mm, 20mm, 50mm, and 80mm, respectively. These symbols are widely used in busbar drawings, mainly to describe geometric features such as arcs, chamfers, and fillets. For example, marking R50 at a 90-degree angle means that the angle is processed as a fillet with a radius of 50mm. This design helps to reduce stress concentration and improve the mechanical strength and safety performance of the busbar.

Generally, R3, R5, R10 and R20 refer to the arc radius of the vertical bend of the busbar, while R50 and R80 refer to the arc radius of the horizontal bend of the busbar. If you want to know more about vertical bend and horizontal bend, please refer to:The difference between horizontal bending and vertical bending in busbar bending machine.

As a key component in the power transmission system, the busbar’s geometry and size directly affect the efficiency and safety of current transmission. A larger arc radius can reduce the concentration of electric fields and the risk of corona discharge, thereby improving the electrical performance of the busbar. Therefore, it is crucial to choose the right arc radius when designing and manufacturing busbars.

In addition, the R value in the busbar drawing must also be considered in coordination with other design elements. For example, the radius of the busbar should match the size and shape of the connecting parts to ensure the accuracy and stability of the installation. In practical applications, designers need to consider and select the appropriate R value based on specific electrical requirements, mechanical strength, and environmental conditions.

Generally, busbar processing machine manufacturers will configure standard bending dies for each busbar bending machine, such as CNC busbar bending machine with R5, R10, R30 and R100 bending dies, 3 in 1 busbar machine and CNC busbar machine with R3, R5, R10, R80 bending dies. If your project has a special bending process, many busbar machine factories can also customize bending dies for you.

In industrial production, busbar systems are widely used in various types of electrical equipment. For example, in the design of a large transformer, the busbar connects the high-voltage side and the low-voltage side of the transformer. In order to ensure the stability of current transmission, the designer will select the appropriate busbar radius according to the capacity and voltage level of the transformer. Generally speaking, due to the high voltage of the high-voltage busbar, its arc radius will be relatively large, such as R50 or R80, to reduce the risk of electric field concentration and corona discharge.

According to statistics, in an equipment transformation project of a large power company, the busbar system designed with the R80 standard successfully reduced the incidence of corona discharge and improved the safety and stability of equipment operation. In the data monitoring after one year of equipment operation, it was found that the current transmission efficiency was improved by 5% and the maintenance cost of the equipment was reduced by 8%.

In another application scenario, such as the uninterruptible power supply system (UPS) of the data center, the busbar needs to have high conductivity and low impedance characteristics. The designer may choose a smaller arc radius, such as R10 or R20, to optimize the current transmission path and improve the overall efficiency of the system. At the same time, the design of these radii also needs to be coordinated with the compact space layout of the UPS to ensure that the connections between the components are tight and safe.

When a well-known data center upgraded its UPS system, it adopted a busbar designed according to the R10 standard. After actual operation tests, the overall efficiency of the system increased by 7% and energy consumption decreased by 6%. In addition, due to the tighter busbar connection, the failure rate of the system decreased by 12%.

In addition, in the field of rail transit, the busbar system is used for power transmission of power trains. Due to the particularity of the train operation environment, the busbar must not only have good electrical performance, but also have high mechanical strength and vibration resistance. Therefore, when selecting the busbar radius, the designer will comprehensively consider factors such as material strength, processing technology, and actual operating conditions to ensure the stability and reliability of the busbar in complex environments.

In the construction of an urban rail transit line, a busbar system designed according to the R50 standard was adopted. After long-term operation tests, it was found that the system can maintain good performance in various complex environments, the train power supply is stable, and the failure rate is extremely low. According to statistics, the train operation punctuality rate of this line has increased by 10%, and passenger satisfaction has been greatly improved.

In summary, the R10, R20, R50, R80 and other symbols in the busbar drawings are not only simple dimensioning, but also indispensable elements in electrical design and manufacturing. Their application involves multiple aspects such as electrical performance, mechanical strength, and installation convenience, and designers need to make reasonable choices based on comprehensive consideration of various factors. By deeply understanding and accurately applying these symbols, the design quality and operational reliability of the busbar system can be effectively improved, providing a solid guarantee for the safe and stable operation of the power transmission system.