低压三相和单相接地故障电流计算表序号电路元件短路点元件阻抗(兆欧)短路点阻抗(兆欧)三相短路电流单相接地故(kA)障电流(Ka)短路电流短路冲击电流冲击系数(Ka)短路冲击电流最大有效值(Ka)长度L2Rm'Xm'68 Z0.032 0.0257R'phpX'php.m5C长度L3Rm'0.140.06L3电缆段:ZR-VV-3X240+2X120B+5C 12.0015.159.6420.6052.5063.5722.5039.1325.5874.659.012.941.361.0813.769.06125 0.096 Xm'0.0771R'phpX'php.m60.420.18L4电缆段:VV-3X70+2X35D5.0211.921.563.56第2页,共3页
低压三相和单相接地故障电流计算表序号电路元件短路点元件阻抗(兆欧)短路点阻抗(兆欧)三相短路电流单相接地故(kA)障电流(Ka)短路电流短路冲击电流冲击系数(Ka)短路冲击电流最大有效值(Ka)D长度L3Rm'C+6 20.1732.5265.1342.6938.2777.886.022.821.611.129.536.1120 0.251Xm'R'phpX'php.m0.5960.0780.178第3页,共3页
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