导线截面积选择计算公式
2020-12-25
来源：好走旅游网
母线及电缆经济电流密度jec值（A/mm2）年最大负荷利用小时数Tmax(h)导体材料3000以下铜裸导线及母线铝裸导线及母线铜芯电缆铝芯电缆3.01.652.51.923000--50002.251.152.251.735000以上1.750.91.751.54注：《变电所的设计与应用》表4-7导线截面计算公式变压器容量（kVA）电压等级（kV）经济电流密度（jec）3125050001800015000010351102201.151.151.151.151.7320508081.7320508081.7320508081.732050808坐标点距离计算公式ABX2719225.3682719158.96366.4054409.624025Y511613.283511548.24365.044230.2016导线应选截面（mm2）62.7554640471.7205303382.15260747342.3025311L92.95066232