變壓器高低壓電器及母線選擇

1、6(10)/0.4kV變壓器高低壓側(cè)電器及母線選擇表編號(hào)名 稱變壓器容量(kVA)電壓(kV)1001251602002503154005006308001000125016002000高壓側(cè)額定電流(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架空引入線(mm2)6LJ型 不低于：居民區(qū)35；非居民區(qū)2510LJ型 不低于：居民區(qū)35；非居民區(qū)252電纜引入線(mm2)6YJV-6/6，3×25(尚需經(jīng)短

2、路電流熱穩(wěn)定校驗(yàn))3×353×503×703×9510YJV-8.7/10，3×25(尚需經(jīng)短路電流熱穩(wěn)定校驗(yàn))3×353×503隔離開關(guān)或負(fù)荷開關(guān)6GN6-6/200 CS6-1GN19-10/400 CS6-1FN3-6 CS3FKN-12 組合電器FKRN-12 組合電器10GN6-10/200 CS6-1GN19-10/400 CS6-1FN3-10 CS3FKN-12 組合電器FKRN-12 組合電器4RN3型熔斷器熔管電流/熔體電流(A)650/2050/3050/4050/5075/75200/100200/1

3、50200/200-1050/1550/2050/3050/4050/5075/75200/100200/150-5XRNT1-10型熔斷器熔管電流/熔體電流(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跌開式熔斷器熔管電流/熔體電流(A)6100/20100/30100/40100/50100/75100/100200/150-10100/15100/20100/30100/40100/501

4、00/75-711低壓母線(mm2)銅TMY-3(30×4)低壓側(cè)額定電流(A)ZD174(一)-1144180231289361455577722909115514431804230928878低壓斷路器：CM1E系列(100315kVA)電子式脫扣器，CW1系列(4002000kVA)M型智能控制器整定電流表0.4見低壓斷路器選擇表9低壓側(cè)隔離開關(guān)由低壓配電屏(柜)生產(chǎn)廠配套10電流互感器變比(A)200/5300/5400/5500/5600/5800/51000/51500/52000/53000/5鋁LMY 4(40×4)4(50×5)4(60×

5、;6.3)4(80×6.3)4(80×8)4(100×8)4(120×10)8(100×10)8(120×10)12(100×10)銅TMY 4(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)變壓器型號(hào)脫扣器額定電流In(A)過載長(zhǎng)延時(shí)整定電流 Ir1短路短延時(shí)整定電流Ir2短路瞬時(shí)動(dòng)作整定電流Ir3額定容量Se(kV

6、A)二次側(cè)額定電流I2e(A)對(duì)CM1E系列取Ir1=In對(duì)CW1系列Ir1=(0.41.0)In按每級(jí)20A遞變調(diào)整計(jì)算公式：Ir2 Kk·mgh·I2e(A)取Kk=1.2mgh=4確定Ir2值時(shí)注意事項(xiàng)：CM1E：Ir2=(212)In±10%CW1：Ir2=(0.415) In按每級(jí)50A遞變調(diào)整確定原則：通常取Ir3=10In確定Ir3值時(shí)注意事項(xiàng)：1. Ir3值應(yīng)在下列范圍內(nèi)：CM1E：Ir3=(416)In±15%CW1：對(duì)CW1-2000Ir3在250kA內(nèi)對(duì)CW1-3200Ir3在480kA內(nèi)按每級(jí)0.5kA遞變調(diào)整2. Ir3 取值I

7、r2/In100144CM1E-2251601608005.0為保證供電系統(tǒng)動(dòng)作選擇性，應(yīng)進(jìn)行校驗(yàn)內(nèi)容：在QF1的Ir2值確定后，低壓母線饋出斷路器QF2的短路瞬動(dòng)整定電流Ir3必須滿足：QF2的Ir3 1600125180CM1E-22520020010005.02000160231CM1E-40031531512604.03150200289CM1E-40035035015754.53500250361CM1E-63040040020005.04000315455CM1E-63063063025204.06300400577CW1-200080064032004.08000500722CW1-2000100080040004.010000應(yīng)進(jìn)行校驗(yàn)的內(nèi)容：在QF1的Ir3確定后，QF2的Ir3 630909CW1-2000125099050004.0125008001155CW1-20001600128064004.01600010001443CW1-20002000160080004.02000012501804CW1-320025002000100004.02500016002309CW1-320029002500116004.02900020002887CW1-320032003200144004.532000說明：1.過載長(zhǎng)