10/0.4kV变压器与额定电流(A)低压出口短路电流(kA)高压熔断总出线断变压器容阻抗电压互感器器额定电路器额定量Se(kVA)Uk%IpIk变比(A)高压侧低压侧流（A）电流(A)16049.2230.914.725.7716250300/5200411.5288.718.407.22203100/5250414.4360.823.009.02200500/53118.24.728.9811.3732500650/00423.1577.436.8114.4340630800/5500428.9721.746.0118.0450800800/5630436.4909.357.9722.736310001000/58006.211.749.0719.258012501500/51000657.71443.461.3424.0610016002000/51250672.21804.276.6830.0712520002500/51600692.42309.498.1538.4916025003000/520006115.52886.8122.6948.1120032004000/525006144.33608.4153.3660.1425040005000/5附注：1.Ip-短路电流峰值；Ik-对称稳态三相短路电流有效值；短路电流计算以上级系统容量无穷大为计①Ik=Se/1000(√3×Ue×Uk%)=100S/1000(计算公式e√3×0.4×Uk)=Se/√3/4Uk(kA)②Ip=2.55Ik③变压器高压侧额定电流=Sr/(√3×Ue)=Se/√3/10(A)低压侧额定电流=Sr/(√3×Ue)=Se/√3/0.4(A压器与低压断路器、互感器及母线等配合表变压器低压侧出线选择母线槽(A)--63063080010001250160020002500315040005000铜母线(TMY-)规格(mm2)4(40×4)4(40×4)4(40×4)4(50×5)4(63×6.3)3(80×6.3)+1(63×6.3)3(80×8)+1(63×6.3)3(100×8)+1(80×6.3)3(125×10)+1(80×8)3[2(100×10)]+1(100×3[2(125×10)]+1(125×3[2(125×10)]+1(125×3[3(125×10)]+1(125×VV电缆规格(mm2)3×240+1×1202(3×150+1×70)2(3×240+1×120)3×2(1×185)+(1×185)3×2(1×240)+1(1×240)3×2(1×400)+1(1×400)3×4(1×185)+2(1×185)3×4(1×240)+2(1×240)3×4(1×400)+2(1×400)---YJV电缆规格(mm2)3×150+1×703×185+1×953×300+1×1502(3×150+1×70）2(3×185+1×95）3×2(1×240)+1(1×3×2(1×300)+1(1×3×4(1×150)+2(1×3×4(1×240)+2(1×3×4(1×300)+2(1×---铜母线(mm2)15×315×315×320×320×325×325×330×430×430×440×440×440×5变压变压器低压侧中性点接地线选择镀锌扁钢BV电缆VV电缆裸铜绞线(mm2)(mm2)(mm2)(mm2)25×41×501×501×3525×41×501×501×30×41×701×701×5040×41×701×701×5040×41×951×951×7040×51×1201×1201×7050×51×1501×1501×9550×51×1501×1501×9550×51×1501×1501×9563×51×1851×1851×12080×5-1×2401×150100×5-1×2401×18580×8-1×3001×240
