Calculation formula for aluminum busbar current carrying capacity

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1. Collection of copper aluminum busbar current carrying capacity calculation method

Estimation method is a simple method for calculating the current carrying capacity of copper aluminum busbar. The current carrying capacity of a single copper busbar can be obtained by multiplying the width and thickness coefficients. The double busbar current carrying capacity is increased by an empirical coefficient of 1.5 times on the basis of a single busbar. For copper and aluminum bars, their current carrying capacity can also be calculated in square meters, with copper bars typically ranging from 5-8 A/square meter and aluminum bars ranging from 3-5 A/square meter. At 40 ℃, the calculation method for the current carrying capacity of a copper busbar is to multiply the busbar width by a specific thickness coefficient, which varies depending on the busbar width. For example, a copper busbar with a thickness of 12 millimeters has a coefficient of 20, a copper busbar with a thickness of 10 millimeters has a coefficient of 18, and so on. For double-layer, three-layer, and four layer copper bars, the current carrying capacity is approximately 1.58 times, 2 times, and 2.45 times that of single-layer copper bars, respectively. It should be noted that the current carrying capacity of copper bars will decrease by about 15% at 40 ℃ compared to 25 ℃. The calculation method for the current carrying capacity of aluminum bars is similar to that of copper bars, but the current carrying capacity of aluminum bars is usually smaller than that of copper bars. The calculation formula for aluminum busbar current carrying capacity is the product of busbar width multiplied by busbar thickness plus 8.5. For example, a 15mm wide and 3mm thick alu

Calculation formula for aluminum busbar current carrying capacity

minum busbar has a current carrying capacity of 172.5 amperes at 40 ℃, which is 15 times 11.5, while a 100mm wide and 8mm thick aluminum busbar has a current carrying capacity of 1650 amperes, which is 100 times 16.5. The current carrying capacity of double-layer aluminum bars is about 1.5 times that of single-layer aluminum bars, and about 2 times that of three-layer aluminum bars. The calculation method of current carrying capacity for aluminum bars is related to thickness and width, and the mnemonic provides a fast calculation method. The calculation method for the current carrying capacity of aluminum bars is to multiply the width of the bars by a specific coefficient, which varies depending on the thickness of the aluminum bars. For example, the current carrying capacity of a 3mm thick aluminum busbar is the width multiplied by 10, and the current carrying capacity of a 4mm thick aluminum busbar is the width multiplied by 12. The coefficient increases by 1 for every 1 millimeter increase in thickness. For example, the thickness increases from 3 millimeters to 4 millimeters, and the current carrying capacity coefficient increases from 10 to 12. The mnemonic also points out that for copper bars, the current carrying capacity is 30% higher than that of aluminum bars of the same specification. When calculating, first calculate according to the method of aluminum bars, and then multiply the result by 1.3. The current carrying capacity of the busbar is also affected by environmental temperature, the parallel use of multiple busbars, and the placement of busbars. When the ambient temperature exceeds 25 ℃ or when DC busbars are connected in parallel, the current carrying capacity should be reduced accordingly. For example,

Calculation formula for aluminum busbar current carrying capacity

1. Collection of copper aluminum busbar current carrying capacity calculation method

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