电力电缆桥架横截面积计算表

电力电缆桥架截面积计电线线芯组成模式序标称截面号（mm2）近似外径12345671011121314151617181920YJV-1.5YJV-2.5YJV-4YJV-6YJV-10YJV-16YJV-25YJV-35YJV-50YJV-70YJV-95YJV-120YJV-150YJV-185YJV-240YJV-300YJV-400YJV-500YJV-630YJV-800电缆截面积总和所需桥架截面积总和（填充率40％）5.666.478.39.311.212.414.116.118.2202224.227.129.733.136.841.145.71芯近似外径1010.811.712.715.317.420.823.126.230.634.838.2.747.553.359.22芯近似外径10.411.312.213.416.118.422.124.627.932.837.141.245.850.957.463.471.1343芯近似外径11.14芯（3+1）近似外径10.911.812.914.116.819.423.225.229.13238.743.444.352.85565.773.5根数SD(MM2)根数SD(MM2)根数SD(MM2)根数SD(MM2)00000000000000000000000000000000000000000000000000000000000000300.86212.1467.59513.20000000000000000014.517.620.124.327.13136.441.24650.956.870.879.6电缆单层排列需总宽度（相邻紧贴排列）注：①辐照交联聚烯烃绝缘低烟无卤护套电力电缆（WDZ-YJFE)、交联聚乙烯绝缘无卤低烟聚烯烃护套阻燃环保型电缆（WDZA-YJV,WDZB-YJV,WDZC-YJV)的近似外径数据均与低压交联乙烯绝缘电力电缆（YJV）一致，不再单独列出；②交联聚乙烯绝缘聚烯烃护套无卤低烟耐火电力电缆（WDZB-YJV）近似外径数据单独列出；③电缆线芯的结构型式以紧压扇形为主。

托盘，梯架横截面积的计算公式：S=KSD/η

SD=n1*3.14*(d1/2)2 +n2*3.14*(d2/2)2+…S:托盘，梯架横截面积（mm2)η:填充率，％，取40%,n1,n2…电缆根数

K:裕量系

数,1.10~1.25

SD:电缆总截面积，mm2

d1,d2…电缆直径，mm

面积计算表

（3+1）芯（3+2）芯近似外径13.414.415.516.919.522.626.528.43339.444.746.65056.163.169.878.1（4+1）芯近似根数外径11.812.81415.418.421.425.728.13338.343.5近似外径11.91314.215.619.12226.629.734.240.245.850.856.563.171.178.688.55芯根数SD(MM2)根数SD(MM2)SD(MM2)根数SD(MM2)单层电电缆截缆排列面积之宽度之和和（mm2）（mm2）0000000000000000000000000000000000000000000000000000022000000000000000000000 265.465566.327316.735784.33000000000000000000000000003411.0804943.630000009705.3623411.0848.8053.224943.6359.600000067.174.283.3K=1.25,η=0.430329.3 0