变压器高低压电器及母线选择

6(10)/0.4kV变压器高低压侧电器及母线选择表编号名称变压器容量(kVA)电压(kV)1001251602002503154005006308001000125016002000高压侧额定电流(A)69.61215.419.224.130.338.548.160.67796.2120.3154192.5105.87.29.211.614.418.223.128.936.446.257.772.292.4115.51架空引入线(mm2)6LJ型不低于：居民区35；非居民区2510LJ型不低于：居民区35；非居民区252电缆引入线(mm2)6YJV-6/6，3×25(尚需经短路电流热稳定校验)3×353×503×703×9510YJV-8.7/10，3×25(尚需经短路电流热稳定校验)3×353×503隔离开关或负荷开关6GN6-6/200CS6-1GN19-10/400CS6-1FN3-6CS3FKN-12组合电器FKRN-12组合电器10GN6-10/200CS6-1GN19-10/400CS6-1FN3-10CS3FKN-12组合电器FKRN-12组合电器4RN3型熔断器熔管电流/熔体电流(A)650/2050/3050/4050/5075/75200/100200/150200/200-1050/1550/2050/3050/4050/5075/75200/100200/150-5XRNT1-10型熔断器熔管电流/熔体电流(A)640/2040/31.540/40100/50100/71100/1002根并100/712根并100/100-1040/1640/2040/31.540/40100/50100/71100/1002根并100/71-6RW11-10跌开式熔断器熔管电流/熔体电流(A)6100/20100/30100/40100/50100/75100/100200/150-10100/15100/20100/30100/40100/50100/75-711低压母线(mm2)铜TMY-3(30×4)低压侧额定电流(A)ZD174(一)-1144180231289361455577722909115514431804230928878低压断路器：CM1E系列(100～315kVA)电子式脱扣器，CW1系列(400～2000kVA)M型智能控制器整定电流表0.4见低压断路器选择表9低压侧隔离开关由低压配电屏(柜)生产厂配套10电流互感器变比(A)200/5300/5400/5500/5600/5800/51000/51500/52000/53000/5铝LMY4(40×4)4(50×5)4(60×6.3)4(80×6.3)4(80×8)4(100×8)4(120×10)8(100×10)8(120×10)12(100×10)铜TMY4(30×4)4(40×4)4(50×5)4(60×6.3)4(80×6.3)4(80×8)4(100×8)4(100×10)8(80×10)8(100×10)变压器型号脱扣器额定电流In(A)过载长延时整定电流Ir1短路短延时整定电流Ir2短路瞬时动作整定电流Ir3额定容量Se(kVA)二次侧额定电流I2e(A)对CM1E系列取Ir1=In对CW1系列Ir1=(0.4～1.0)In按每级20A递变调整计算公式：Ir2≥Kk·mgh·I2e(A)取Kk=1.2mgh=4确定Ir2值时注意事项：CM1E：Ir2=(2～12)In±10%CW1：Ir2=(0.4～15)In按每级50A递变调整确定原则：通常取Ir3=10In确定Ir3值时注意事项：1.Ir3值应在下列范围内：CM1E：Ir3=(4～16)In±15%CW1：对CW1-2000Ir3在2～50kA内对CW1-3200Ir3在4～80kA内按每级0.5kA递变调整2.Ir3≤3.1min1kI取值Ir2/In100144CM1E-2251601608005.0为保证供电系统动作选择性，应进行校验内容：在QF1的Ir2值确定后，低压母线馈出断路器QF2的短路瞬动整定电流Ir3必须满足：QF2的Ir3≤25.12.121～IQFr的1600125180CM1E-22520020010005.02000160231CM1E-40031531512604.03150200289CM1E-40035035015754.53500250361CM1E-63040040020005.04000315455CM1E-63063063025204.06300400577CW1-200080064032004.08000500722CW1-2000100080040004.010000应进行校验的内容：在QF1的Ir3确定后，QF2的Ir3≤0.266.131～IQFr的630909CW1-2000125099050004.0125008001155CW1-20001600128064004.01600010001443CW1-20002000160080004.02000012501804CW1-320025002000100004.02500016002309CW1-320029002500116004.02900020002887CW1-320032003200144004.532000说明：1.过载长延时整定时限1.50Ir1时，取480S。2.短路短延时时限整定值：当低压母线馈出断路器无短路短延时时，QF1的短路短延时整定0.2S；当低压母线馈出断路器QF2有短路短延时，且短延时为0.2S时，则QF1的短延时整定为0.4S。ZD174(一)-2