How to determine the cross-sectional area of copper bars
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Simply remember the current carrying capacity of any rectangular busbar: Rectangular bus current carrying capacity: Copper bus current carrying capacity at 40°C = row width * thickness factor row width (mm); thickness factor is: when the busbar is 12 thick, it is 20.5; 18 when 10 is thick.5; followed by: [12-20.5, 10-18.5, 8-16.5, 6-14.5, 5-13.5, 4-12.5] [Note]: According to the suggestion of lyq13703983100 and further calculations, add 0 to the original thickness coefficients 20, 18, 16, 14, and 12 respectively.5. Get closer. Double-layer copper busbar [40℃]=1.56-1.58 single-layer copper busbar [40℃] (according to the size of the cross section) 3-layer copper busbar [40°C]=2 single-layer copper busbar [40°C] 4-layer copper busbar [40°C]=single-layer copper busbar [40°C] *2.45(This kind of choice is not recommended, it is better to use special-shaped busbar instead) Copper busbar [40℃]= Copper busbar [25℃]*0.85 Aluminum bar[40℃]= Copper bar[40℃]/1.3 For example, the current carrying capacity of TMY100*10 is: Single layer: 100*18.5 = 1850 (A) [check the manual for 1860A]; Double layer: 2 (TMY100*10), the current carrying capacity: 1850*1.58 = 2923 (A); [Check the manual for 2942A]; Three layers: 3 (TMY100*10) carrying capacity: 1850*2 = 3700 (A) [Check the manual for 3780A] All the above calculations are accurate to the manual The data is quite close. Yueqing Renhe Electronics Co., Ltd. is a professional copper bar manufacturer in Zhejiang, focusing on the production, research and development of new energy electric vehicle battery copper bar connection, electrical connection copper bar, braided copper bar, flexible copper bar connection, cable connection and insulating protective cover And sales.Products comply with EU environmental protection, UL flame retardant, ISO9001 management system certification requirements.