高压侧低压侧16049.2230.914.725.7716250300/5200411.5288.718.407.2220315400/5250414.4360.823.009.0225400500/5315418.2454.728.9811.3732500650/5400423.1577.436.8114.4340630800/5500428.9721.746.0118.0450800800/5630436.4909.357.9722.736310001000/5800646.21154.749.0719.258012501500/51000657.71443.461.3424.0610016002000/51250672.21804.276.6830.0712520002500/51600692.42309.498.1538.4916025003000/520006115.52886.8122.6948.1120032004000/525006144.33608.4153.3660.1425040005000/5计算公式③变压器10/0.4kV（变比为25）变压器与变压器容量Se(kVA)阻抗电压Uk%额定电流(A)低压出口短路电流(kA)高压熔断器额定电流（A）总出线断路器额定电流(A)互感器变比(A)IpIk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算条件。①Ik=Se/1000(√3×Ue×Uk%)=100Se/1000(√3×0.4×Uk)=Se/√3/4Uk(kA)②Ip=2.55Ik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)变压器低压侧出线选择变压器低压侧-4(40×4)3×150+1×7015×3-4(40×4)3×240+1×1203×185+1×9515×36304(40×4)2(3×150+1×70)3×300+1×15015×36304(50×5)2(3×240+1×120)20×38004(63×6.3)3×2(1×185)+(1×185)20×310003(80×6.3)+1(63×6.3)3×2(1×240)+1(1×240)3×2(1×240)+1(1×240)25×312503(80×8)+1(63×6.3)3×2(1×400)+1(1×400)3×2(1×300)+1(1×300)25×316003(100×8)+1(80×6.3)3×4(1×185)+2(1×185)3×4(1×150)+2(1×150)30×420003(125×10)+1(80×8)3×4(1×240)+2(1×240)3×4(1×240)+2(1×240)30×425003[2(100×10)]+1(100×10)3×4(1×400)+2(1×400)3×4(1×300)+2(1×300)30×431503[2(125×10)]+1(125×10)--40×440003[2(125×10)]+1(125×10)--40×450003[3(125×10)]+1(125×16)--40×5比为25）变压器与低压断路器、互感器及母线等配合表母线槽(A)铜母线(TMY-)规格(mm2)VV电缆规格(mm2)YJV电缆规格(mm2)铜母线(mm2)2(3×150+1×70）2(3×185+1×95）变压器低压侧中性点接地线选择25×41×501×501×3525×41×501×501×3540×41×701×701×5040×41×701×701×5040×41×951×951×7040×51×1201×1201×7050×51×1501×1501×9550×51×1501×1501×9550×51×1501×1501×9563×51×1851×1851×12080×5-1×2401×150100×5-1...
