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『Calculation formula for aluminum busbar current carrying capacity』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

1. Calculation method for current carrying capacity of copper busbar and aluminum busbar. Copper busbar, as a high current conductive product, is widely used in electrical engineering such as high and low voltage appliances, switch contacts, distribution equipment, bus ducts, as well as ultra high current electrolytic smelting projects such as metal smelting, electroplating, and chemical caustic soda. Its characteristics are low resistivity and high bendability. Aluminum bars are used in electric power supply circuits to transmit current and connect electrical equipment, and are made of aluminum material. The calculation methods for the current carrying capacity of copper aluminum bars mainly include estimation methods, commonly used calculation methods, and simplified calculation formulas. In the estimation method, the formula for calculating the current carrying capacity of a single copper busbar is the width (mm) multiplied by the thickness coefficient, while the current carrying capacity of a double busbar is multiplied by a coefficient of 1.5 based on this. The commonly used calculation method includes the calculation of copper busbar current carrying capacity at 40 ℃, which is calculated by multiplying the busbar width by the thickness coefficient. The thickness coefficient varies depending on the thickness of the copper bar, usually 20 for a thickness of 12; When the thickness is 10, it is 18; and so on. The current carrying capacity of a double-layer copper busbar is about 1.58 times that of a single-layer copper busbar, and the current carrying capacity of a three-layer copper busbar is twice that of a single-layer copper busbar. When calculating the current carrying capacity of a copper busbar, temperature will have an impact on it. For example, at 40 ℃, the current carrying capacity of a copper busbar is 0.85 times that of a single-layer copper busbar, while the current carrying capacity of an aluminum busbar is 1.3 times that of a copper busbar. The simplified calculation formula is that the current carrying capacity of a single rectangular copper bar is equal to the width multiplied by (thickness+8.5) A. For example, the current carrying capacity of a 15 * 3 copper bar is 15 * 11.5=172.5A, and the current carrying capacity of a 100 * 8 copper bar is 100 * 16.5=1650A. For double-layer and three-layer copper bars, their current carrying capacities are 1.5 times and 2 times that of a single-layer copper bar, respectively. The calculation method for the current carrying capacity of aluminum bars is different from that of copper bars, mainly based on the width and thickness of the 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. For every millimeter increase in thickness, the coefficient multiplied by the width increases sequentially. The current carrying capacity of copper bars is usually 30% higher than that of aluminum bars of the same specification. Therefore, when calculating the current carrying capacity of copper bars, it can be calculated based on the aluminum bars first, and then multiplied by 1.3. It is worth noting that the current carrying capacity of the busbar not only depends on its cross-sectional size, but also on factors such as ambient temperature, busbar arrangement, and placement direction. When the ambient temperature is above 25 ℃ or when DC bus i

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