住宅楼施工现场临时用电方案江苏剪力墙结构筏板基础计算式.doc

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1、惠天然.锦绣福邸1#.4#.5#.S-1#.W-1#楼及地下室施工现场临时用电施工方案江苏 新源惠天然.锦绣福邸一期二标项目部二O一二年六月目录一、施工条件31、工程概况32、施工现场用电量统计表3二、设计内容和步骤41、现场勘探及初步设计42、确定用电负荷43、选择变压器144、选择总箱的进线截面及进线开关145、1#、W-1#楼线路上导线截面及分配箱、开关箱内电气设备选择146、4#楼线路上导线截面及分配箱、开关箱内电气设备选择297、5#楼线路上导线截面及分配箱、开关箱内电气设备选择418、干4线路上导线截面及分配箱、开关箱内电气设备选择51三、绘制临时供电施工图561、临时供电系统图：

2、562、施工现场临时用电平面图：63四、安全用电技术措施63（一）安全用电技术措施63（二）安全用电组织措施72（三）自备电源的安全技术要求73(四) 外电防护的安全技术要求75五、安全用电防火措施75（一）施工现场发生火灾的主要原因75（二）预防电气火灾的措施76六、现场安全技术档案77七、安全距离与外电防护78八、现场临时用电管理制度79九、触电事故的应急处理80施工现场临时用电设计一、施工条件1、工程概况本工程项目为惠天然。锦绣福邸住宅楼工程，该项目位于如东县掘港口镇钟山路西侧，富春江路北侧。本工程由1#、4#、5#、S-1#、W-1#楼组成，本工程总建筑建筑面积为57030.75平方米

3、。其中1#楼建筑面积11940.39平方米，地下一层，地上十六层；4#楼建筑面积14125.34平方米，地下一层，地上十八层；5#楼建筑面积12311.90平方米，地下一层，地上十八层；建筑高度为52.85米（1#楼）、58.65米（4#、5#楼）。本工程为剪力墙结构，基础为筏板基础。抗震设防烈度7度；建筑耐火等级一级；屋面防水等级二级；抗震等级为三级，结构安全等级二级，使用年限50年。2、施工现场用电量统计表序号设备名称铭牌功率(kW)安装功率(kW)数量合计功率(kW)1塔式起重机_QT40(TQ2-6)484831442自落式混凝土搅拌机_JD35015154603建筑施工外用电梯_SC

4、D100/100A11112224插入式振动器_ZX501.11.11112.15平板振动器ZB111.11.122.26钢筋对焊机75kVA204807钢筋调直机2.82.812.88钢筋切断机_QJ4077179交流电焊机_BX3-300-223.4kVA10.53442.1210木工圆锯_MJ104333911钢筋弯曲机_ZC25-B35.55.542212电刨子4493613钢筋切断机5.55.5316.514平板振动器2.52.537.515圆盘锯551516蛙式夯土机_HW-321.51.511.517镝灯3.53.5310.518空调1.51.52537.519蒸饭机991920

5、日灯0.040.04502二、设计内容和步骤1、现场勘探及初步设计(1)本工程所在施工现场范围内无各种埋地管线。(2)现场采用380V低压供电，设一配电总箱，内有计量设备，采用TN-S系统供电。(3)根据施工现场用电设备布置情况，总线采用电缆线空气明敷，1#、W-1#楼采用电缆线埋地敷设，4#楼采用电缆线埋地敷设，5#楼采用电缆线埋地敷设，1#、W-1#二级箱采用电缆线埋地敷设，1#、W-1#楼二级箱采用电缆线埋地敷设，1#、W-1#楼二级箱采用电缆线埋地敷设，4#楼二级箱采用电缆线埋地敷设，4#二级箱采用电缆线埋地敷设，5#楼二级箱采用电缆线埋地敷设，5#楼二级箱采用电缆线埋地敷设，照明采用

6、导线架空敷设，布置位置及线路走向参见临时配电系统图及现场平面图，采用三级配电，两极防护采用三级配电，两极防护。(4)按照JGJ46-2005规定制定施工组织设计，接地电阻R4。2、确定用电负荷(1)塔式起重机_QT40(TQ2-6)组Kx = 0.30，Cos = 0.70，tg = 1.02将Jc = 40%统一换算到Jc = 25%的额定容量Pe = n(Jc/Jc1)1/2Pn = 1(0.40/0.25)1/248.00 = 60.72kWPjs = KxPe = 0.30 60.72 = 18.21kWQjs = Pjstg = 18.21 1.02 = 18.58kVar(2)自落

7、式混凝土搅拌机_JD350组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 15.00 = 10.50kWQjs = Pjstg = 10.50 1.08 = 11.32kVar(3)建筑施工外用电梯_SCD100/100A组Kx = 0.30，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.30 11.00 = 3.30kWQjs = Pjstg = 3.30 1.02 = 3.37kVar(4)自落式混凝土搅拌机_JD350组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70

8、15.00 = 10.50kWQjs = Pjstg = 10.50 1.08 = 11.32kVar(5)插入式振动器_ZX50组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 1.10 = 0.77kWQjs = Pjstg = 0.77 1.08 = 0.83kVar(6)平板振动器ZB11组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 1.10 = 0.77kWQjs = Pjstg = 0.77 1.08 = 0.83kVar(7)钢筋对焊机组Kx = 0.45，Cos = 0.40，t

9、g = 2.29Pjs = KxPe = 0.45 20.00 = 9.00kWQjs = Pjstg = 9.00 2.29 = 20.62kVar(8)钢筋调直机组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 2.80 = 1.96kWQjs = Pjstg = 1.96 2.29 = 4.49kVar(9)钢筋切断机_QJ40组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 7.00 = 4.90kWQjs = Pjstg = 4.90 2.29 = 11.23kVar(10)交流电焊机_B

10、X3-300-2组Kx = 0.45，Cos = 0.45，tg = 1.98将Jc = 40%统一换算到Jc = 100%的额定容量Pe = n(Jc/Jc1)1/2Pn = 1(0.40/1.00)1/210.53 = 6.66kWPjs = KxPe = 0.45 6.66 = 3.00kWQjs = Pjstg = 3.00 1.98 = 5.95kVar(11)木工圆锯_MJ104组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 6.00 = 4.20kWQjs = Pjstg = 4.20 1.02 = 4.28kVar(12)钢筋弯

11、曲机_ZC25-B3组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 5.50 = 3.85kWQjs = Pjstg = 3.85 2.29 = 8.82kVar(13)电刨子组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 12.00 = 8.40kWQjs = Pjstg = 8.40 1.02 = 8.57kVar(14)塔式起重机_QT40(TQ2-6)组Kx = 0.30，Cos = 0.70，tg = 1.02将Jc = 40%统一换算到Jc = 25%的额定容量Pe = n(Jc/J

12、c1)1/2Pn = 1(0.40/0.25)1/248.00 = 60.72kWPjs = KxPe = 0.30 60.72 = 18.21kWQjs = Pjstg = 18.21 1.02 = 18.58kVar(15)自落式混凝土搅拌机_JD350组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 15.00 = 10.50kWQjs = Pjstg = 10.50 1.08 = 11.32kVar(16)插入式振动器_ZX50组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 1.10 =

13、0.77kWQjs = Pjstg = 0.77 1.08 = 0.83kVar(17)平板振动器ZB11组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 1.10 = 0.77kWQjs = Pjstg = 0.77 1.08 = 0.83kVar(18)插入式振动器_ZX50组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 3.30 = 2.31kWQjs = Pjstg = 2.31 1.08 = 2.49kVar(19)钢筋对焊机组Kx = 0.45，Cos = 0.40，tg = 2.29

14、Pjs = KxPe = 0.45 20.00 = 9.00kWQjs = Pjstg = 9.00 2.29 = 20.62kVar(20)钢筋切断机组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 5.50 = 3.85kWQjs = Pjstg = 3.85 2.29 = 8.82kVar(21)钢筋弯曲机_ZC25-B3组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 5.50 = 3.85kWQjs = Pjstg = 3.85 2.29 = 8.82kVar(22)交流电焊机_BX3-3

15、00-2组Kx = 0.45，Cos = 0.45，tg = 1.98将Jc = 40%统一换算到Jc = 100%的额定容量Pe = n(Jc/Jc1)1/2Pn = 1(0.40/1.00)1/210.53 = 6.66kWPjs = KxPe = 0.45 6.66 = 3.00kWQjs = Pjstg = 3.00 1.98 = 5.95kVar(23)平板振动器组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 2.50 = 1.75kWQjs = Pjstg = 1.75 1.08 = 1.89kVar(24)圆盘锯组Kx = 0.7

16、0，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 5.00 = 3.50kWQjs = Pjstg = 3.50 1.02 = 3.57kVar(25)电刨子组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 12.00 = 8.40kWQjs = Pjstg = 8.40 1.02 = 8.57kVar(26)插入式振动器_ZX50组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 3.30 = 2.31kWQjs = Pjstg = 2.31 1.08 = 2.49kV

17、ar(27)钢筋对焊机组Kx = 0.45，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.45 20.00 = 9.00kWQjs = Pjstg = 9.00 2.29 = 20.62kVar(28)钢筋切断机组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 5.50 = 3.85kWQjs = Pjstg = 3.85 2.29 = 8.82kVar(29)钢筋弯曲机_ZC25-B3组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 5.50 = 3.85kWQjs = P

18、jstg = 3.85 2.29 = 8.82kVar(30)交流电焊机_BX3-300-2组Kx = 0.45，Cos = 0.45，tg = 1.98将Jc = 40%统一换算到Jc = 100%的额定容量Pe = n(Jc/Jc1)1/2Pn = 1(0.40/1.00)1/210.53 = 6.66kWPjs = KxPe = 0.45 6.66 = 3.00kWQjs = Pjstg = 3.00 1.98 = 5.95kVar(31)平板振动器组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 2.50 = 1.75kWQjs = Pj

19、stg = 1.75 1.08 = 1.89kVar(32)蛙式夯土机_HW-32组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 1.50 = 1.05kWQjs = Pjstg = 1.05 1.02 = 1.07kVar(33)塔式起重机_QT40(TQ2-6)组Kx = 0.30，Cos = 0.70，tg = 1.02将Jc = 40%统一换算到Jc = 25%的额定容量Pe = n(Jc/Jc1)1/2Pn = 1(0.40/0.25)1/248.00 = 60.72kWPjs = KxPe = 0.30 60.72 = 18.21k

20、WQjs = Pjstg = 18.21 1.02 = 18.58kVar(34)建筑施工外用电梯_SCD100/100A组Kx = 0.30，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.30 11.00 = 3.30kWQjs = Pjstg = 3.30 1.02 = 3.37kVar(35)自落式混凝土搅拌机_JD350组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 15.00 = 10.50kWQjs = Pjstg = 10.50 1.08 = 11.32kVar(36)插入式振动器_ZX50组Kx = 0.

21、70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 3.30 = 2.31kWQjs = Pjstg = 2.31 1.08 = 2.49kVar(37)平板振动器组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 2.50 = 1.75kWQjs = Pjstg = 1.75 1.08 = 1.89kVar(38)钢筋对焊机组Kx = 0.45，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.45 20.00 = 9.00kWQjs = Pjstg = 9.00 2.29 = 20.62kVar

22、(39)钢筋切断机组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 5.50 = 3.85kWQjs = Pjstg = 3.85 2.29 = 8.82kVar(40)钢筋弯曲机_ZC25-B3组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 5.50 = 3.85kWQjs = Pjstg = 3.85 2.29 = 8.82kVar(41)交流电焊机_BX3-300-2组Kx = 0.45，Cos = 0.45，tg = 1.98将Jc = 40%统一换算到Jc = 100%的额定容量Pe =

23、 n(Jc/Jc1)1/2Pn = 1(0.40/1.00)1/210.53 = 6.66kWPjs = KxPe = 0.45 6.66 = 3.00kWQjs = Pjstg = 3.00 1.98 = 5.95kVar(42)木工圆锯_MJ104组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 3.00 = 2.10kWQjs = Pjstg = 2.10 1.02 = 2.14kVar(43)电刨子组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 12.00 = 8.40kWQjs = Pj

24、stg = 8.40 1.02 = 8.57kVar(44)镝灯组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 10.50 = 7.35kWQjs = Pjstg = 7.35 1.02 = 7.50kVar(45)空调组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 37.50 = 26.25kWQjs = Pjstg = 26.25 1.02 = 26.78kVar(46)蒸饭机组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 9.00 = 6.

25、30kWQjs = Pjstg = 6.30 1.02 = 6.43kVar(47)日光灯组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 2.00 = 1.40kWQjs = Pjstg = 1.40 1.02 = 1.43kVar(48)总的计算负荷计算，干线同期系数取 Kx = 0.90总的有功功率Pjs = 1.1KxPjs = 1.10.90(18.21+10.50+3.30+10.50+0.77+0.77+9.00+1.96+4.90+3.00+4.20+3.85+8.40+18.21+10.50+0.77+0.77+2.31+9.0

26、0+3.85+3.85+3.00+1.75+3.50+8.40+2.31+9.00+3.85+3.85+3.00+1.75+1.05+18.21+3.30+10.50+2.31+1.75+9.00+3.85+3.85+3.00+2.10+8.40+7.35+26.25+6.30+1.40) = 274.88kW总的无功功率Qjs =1.1KxQjs = 1.10.90(18.58+11.32+3.37+11.32+0.83+0.83+20.62+4.49+11.23+5.95+4.28+8.82+8.57+18.58+11.32+0.83+0.83+2.49+20.62+8.82+8.82+5

27、.95+1.89+3.57+8.57+2.49+20.62+8.82+8.82+5.95+1.89+1.07+18.58+3.37+11.32+2.49+1.89+20.62+8.82+8.82+5.95+2.14+8.57+7.50+26.78+6.43+1.43) = 383.01kVar总的视在功率Sjs = (Pjs2+Qjs2)1/2 = (274.882+383.012)1/2 = 471.44kVA总的计算电流计算Ijs = Sjs/(1.732Ue) = 471.44/(1.7320.38) = 716.30A3、选择变压器根据计算的总的视在功率选择SL7-630/10 型三相

28、电力变压器，它的容量为630.00kVA471.44kVA1.20(增容系数)能够满足使用要求，其高压侧电压为10.00kV同施工现场外的高压架空线路的电压级别一致。4、选择总箱的进线截面及进线开关(1)选择导线截面：i) 按安全载流量：上面已经计算出总计算电流Ijs = 716.30Aii) 按允许电压降：S = 1.1Kx(PL)/CU = 1.1 0.9026436.00/(77.005.00) = 67.98mm2iii) 根据前面两条：变压器到总箱采用铜排空气明敷，铜排为10083其安全载流量为780A，截面面积大于500mm2，能够满足使用要求。(2)选择总进线开关：DEL11刀型

29、隔离器，其脱扣器整定电流值为Ir = 780A。(3)选择总箱中漏电保护器：CDJDZ-630。（监相监幅漏电继电器）。5、1#、W-1#楼线路上导线截面及分配箱、开关箱内电气设备选择在选择前应对照平面图和系统图先由用电设备至开关箱计算，再由开关箱至分配箱计算，选择导线及开关设备。1#、W-1#二级箱至开关箱，开关箱至用电设备采用铜芯聚氯乙烯绝缘电缆线埋地敷设。1#、W-1#楼二级箱至开关箱，开关箱至用电设备采用铜芯聚氯乙烯绝缘电缆线埋地敷设。1#、W-1#楼二级箱至开关箱，开关箱至用电设备采用铜芯聚氯乙烯绝缘电缆线埋地敷设。(1)塔式起重机_QT40(TQ2-6)开关箱至塔式起重机_QT40

30、(TQ2-6)导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.060.72/(1.7320.380.70) = 131.80Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.02400.00/(77.005.00) = 6.23mm2选择BX-325+216，空气明敷时其安全载流量为145A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A。漏电保护器为ZBM1-225/140 。

31、(2)自落式混凝土搅拌机_JD350开关箱至自落式混凝土搅拌机_JD350导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.68Ijs = KxPe/(1.732UeCos) = 1.015.00/(1.7320.380.68) = 33.52Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0750.00/(77.005.00) = 1.95mm2选择BX-310+26，空气明敷时其安全载流量为85A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ5-50/3 ，其脱扣器整定电流值为Ir = 4

32、0A。漏电保护器为DZ15L-40/3 。(3)建筑施工外用电梯_SCD100/100A开关箱至建筑施工外用电梯_SCD100/100A导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.011.00/(1.7320.380.70) = 23.88Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0550.00/(77.005.00) = 1.43mm2选择BX-310+26，空气明敷时其安全载流量为85A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关

33、箱内开关为DZ15-40/3 ，其脱扣器整定电流值为Ir = 32A。漏电保护器为ZBM1-100/25 。(4)自落式混凝土搅拌机_JD350开关箱至自落式混凝土搅拌机_JD350导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.68Ijs = KxPe/(1.732UeCos) = 1.015.00/(1.7320.380.68) = 33.52Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0750.00/(77.005.00) = 1.95mm2选择BX-310+26，空气明敷时其安全载流量为85A。室外架空铜芯导线按机械强度的最小截面为10

34、mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ5-50/3 ，其脱扣器整定电流值为Ir = 40A。漏电保护器为DZ15L-40/3 。(5)插入式振动器_ZX50开关箱至插入式振动器_ZX50导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.68Ijs = KxPe/(1.732UeCos) = 1.01.10/(1.7320.380.68) = 2.46Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0165.00/(77.005.00) = 0.43mm2选择BX-310+26，空气明敷时其安全载流量为85A。室外架空铜芯导线按机

35、械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ5-20/3 ，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZBM1-63/10 。(6)平板振动器ZB11开关箱至平板振动器ZB11导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.68Ijs = KxPe/(1.732UeCos) = 1.01.10/(1.7320.380.68) = 2.46Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0165.00/(77.005.00) = 0.43mm2选择BX-310+26，空气明敷时其安全载流量为85A。室外架

36、空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ5-20/3 ，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZBM1-63/10 。(7)钢筋对焊机开关箱至钢筋对焊机导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.40Ijs = KxPe/(1.732UeCos) = 1.020.00/(1.7320.380.40) = 75.97Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.01600.00/(77.005.00) = 4.16mm2选择BX-310+26，空气明敷时其安全载流量为85A。室

37、外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A。漏电保护器为ZBM1-100/80 。(8)钢筋调直机开关箱至钢筋调直机导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.40Ijs = KxPe/(1.732UeCos) = 1.02.80/(1.7320.380.40) = 10.64Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0224.00/(77.005.00) = 0.58mm2选择BX-310+26，空气明敷时其安全载流量为8

38、5A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ5-20/3 ，其脱扣器整定电流值为Ir = 16A。漏电保护器为RMM1-63/12 。(9)钢筋切断机_QJ40开关箱至钢筋切断机_QJ40导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.40Ijs = KxPe/(1.732UeCos) = 1.07.00/(1.7320.380.40) = 26.59Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0560.00/(77.005.00) = 1.45mm2选择BX-310+26，空气明

39、敷时其安全载流量为85A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ15-40/3 ，其脱扣器整定电流值为Ir = 32A。漏电保护器为DZ15L-30/3 。(10)交流电焊机_BX3-300-2开关箱至交流电焊机_BX3-300-2导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.45Ijs = KxPe/(1.732UeCos) = 1.06.66/(1.7320.380.45) = 22.49Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0842.40/(77.005.00) =

40、2.19mm2选择BX-310+26，空气明敷时其安全载流量为85A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ15-40/3 ，其脱扣器整定电流值为Ir = 32A。漏电保护器为ZBM1-100/25 。(11)木工圆锯_MJ104开关箱至木工圆锯_MJ104导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.03.00/(1.7320.380.70) = 6.51Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0450.00/(7

41、7.005.00) = 1.17mm2选择BX-310+26，空气明敷时其安全载流量为85A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ5-20/3 ，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZBM1-63/10 。(12)钢筋弯曲机_ZC25-B3开关箱至钢筋弯曲机_ZC25-B3导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.40Ijs = KxPe/(1.732UeCos) = 1.05.50/(1.7320.380.40) = 20.89Aii)选择导线按允许电压降：S = Kx(PL)/

42、CU = 1.0440.00/(77.005.00) = 1.14mm2选择BX-310+26，空气明敷时其安全载流量为85A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ15-40/3 ，其脱扣器整定电流值为Ir = 32A。漏电保护器为ZBM1-100/25 。(13)电刨子开关箱至电刨子导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.04.00/(1.7320.380.70) = 8.68Aii)选择导线按允许电压降：S = Kx(PL)/CU

43、 = 1.0600.00/(77.005.00) = 1.56mm2选择BX-310+26，空气明敷时其安全载流量为85A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ5-20/3 ，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZBM1-63/10 。(14)塔式起重机_QT40(TQ2-6)开关箱至塔式起重机_QT40(TQ2-6)导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.060.72/(1.7320.380.70) = 131.80Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.04800.00/(77.005.00) = 12.47mm2选择BX-325+216，空气明敷时其安全载流量为145A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内开关为DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A。漏电保护器为ZBM1-225/140 。(15)自落式混凝土搅拌机_JD350开关箱至