『Calculation formula for copper 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. The calculation method for current carrying capacity of copper busbar and aluminum busbar is an important part of electrical engineering, which directly affects the operation safety and efficiency of electrical equipment. The specific calculation methods for the current carrying capacity of copper busbars and aluminum busbars are as follows:
1. Estimation method for the current carrying capacity of copper busbars: The current carrying capacity of a single copper busbar is equal to the width (mm) multiplied by the thickness coefficient. The current carrying capacity of a double busbar is equal to the width (mm) multiplied by the thickness coefficient multiplied by 1.5 (empirical coefficient). Common thickness coefficients (at 40 ℃) are: 20 for a 12mm thickness, 18 for a 10mm thickness, 16 for an 8mm thickness, 14 for a 6mm thickness, 13 for a 5mm thickness, and 12 for a 4mm thickness bridge.
. Accurate calculation method: Single layer copper busbar current carrying capacity (at 40 ℃)=busbar width × thickness coefficient (selected according to the busbar thickness) Double layer copper busbar current carrying capacity (at 40 ℃)=1.56-1.58 × single layer copper busbar current carrying capacity (at 40 ℃) Three layer copper busbar current carrying capacity (at 40 ℃)=2 × single layer copper busbar current carrying capacity (at 40 ℃) Four layer copper busbar current carrying capacity (at 40 ℃)=single layer copper busbar current carrying capacity (at 40 ℃) × 2.45 (not recommended, it is best to use irregular busbar as a substitute) Copper busbar current carrying capacity (at 25 ℃) can be obtained by multiplying the current carryi
2. Formula for calculating current carrying capacity of aluminum busbar: To calculate current carrying capacity of aluminum busbar quickly, multiply the busbar width coefficient; Thick three rows, width by ten, rear four rows, width by twelve; Add one in sequence (for every 1mm increase in thickness, the coefficient increases by 1), and then multiply the copper bar by 1.3. Specific coefficients: 3mm thickness is row width x 10, 4mm thickness is row width x 12, 5mm thickness is row width x 13, 6mm thickness is row width x 14, 8mm thickness is row width x 16, and 10mm thickness is row width x 18. Accurate calculation method (based on copper busbar conversion): First, consider the aluminum busbar as a copper busbar of the same specification, and calculate the current carrying capacity according to the above copper busbar calculation method; Then multiply the obtained copper busbar current carrying capacity by 0.77 (i.e. 1/1.3) to obtain the current carrying capacity of the aluminum busbar.
III. Precautions: The current carrying capacity of the busbar is related to its cross-sectional size. The larger the cross-sectional area, the greater the current carrying capacity.
. The ambient temperature has an impact on the current carrying capacity of the busbar. Generally, when the ambient temperature is often higher than 25 ℃, the current carrying capacity needs to be treate
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