施工现场临时用电专项预案培训文件

1、173/175XX项目(一期)二期工程施工用电方案AAAA建设集团有限公司XXXX FIRST CONSTRUCTION GROUP CO.,LTD.目 录TOC o 1-3 t h z u HYPERLINK l _Toc23189 第一章 编制依据 PAGEREF _Toc23189 3 HYPERLINK l _Toc3746 第二章 工程概况 PAGEREF _Toc3746 3 HYPERLINK l _Toc24098 一、 总体工程概况 PAGEREF _Toc24098 3 HYPERLINK l _Toc32344 二、 施工场地差不多概况 PAGEREF _Toc32344

2、 4 HYPERLINK l _Toc15491 三、 电源接驳点概况 PAGEREF _Toc15491 4 HYPERLINK l _Toc1224 第三章 施工部署 PAGEREF _Toc1224 4 HYPERLINK l _Toc17943 一、 总体目标 PAGEREF _Toc17943 4 HYPERLINK l _Toc3200 二、 现场临时用电部署：三级配电二级爱护 PAGEREF _Toc3200 4 HYPERLINK l _Toc20536 三、 组织机构 PAGEREF _Toc20536 5 HYPERLINK l _Toc24170 四、 技术预备 PAGE

3、REF _Toc24170 7 HYPERLINK l _Toc3379 五、 劳动力预备 PAGEREF _Toc3379 8 HYPERLINK l _Toc1129 六、 机具预备 PAGEREF _Toc1129 8 HYPERLINK l _Toc9479 七、 材料预备 PAGEREF _Toc9479 9 HYPERLINK l _Toc15770 第四章 临时用电布置讲明 PAGEREF _Toc15770 9 HYPERLINK l _Toc7439 一、 参数设置 PAGEREF _Toc7439 10 HYPERLINK l _Toc31188 二、 临电初步设计原则 P

4、AGEREF _Toc31188 18 HYPERLINK l _Toc19971 第五章 临时用电计算 PAGEREF _Toc19971 18 HYPERLINK l _Toc15920 一、 用电负荷计算 PAGEREF _Toc15920 18 HYPERLINK l _Toc25327 二、 导线及开关箱内电气设备选择 PAGEREF _Toc25327 50 HYPERLINK l _Toc8842 三、 一级配电柜的进线、开关箱内电气设备选择 PAGEREF _Toc8842 80 HYPERLINK l _Toc28958 第六章 绘制临时供电施工图 PAGEREF _Toc2

5、8958 81 HYPERLINK l _Toc30720 一、 一级配电柜系统图 PAGEREF _Toc30720 83 HYPERLINK l _Toc28051 二、 二级配电箱供电系统图 PAGEREF _Toc28051 83 HYPERLINK l _Toc20882 第七章 安全用电技术措施 PAGEREF _Toc20882 86 HYPERLINK l _Toc20892 一、 安全用电技术措施 PAGEREF _Toc20892 86 HYPERLINK l _Toc7902 二、 安全用电组织措施 PAGEREF _Toc7902 99 HYPERLINK l _Toc

6、6825 第八章 安全用电防火措施 PAGEREF _Toc6825 100 HYPERLINK l _Toc22912 一、 施工现场发生火灾的要紧缘故 PAGEREF _Toc22912 101 HYPERLINK l _Toc12162 二、 预防电气火灾的措施 PAGEREF _Toc12162 102 HYPERLINK l _Toc14937 三、 防雷装置设计 PAGEREF _Toc14937 104 HYPERLINK l _Toc26093 第九章 接地装置设计 PAGEREF _Toc26093 104 HYPERLINK l _Toc26327 第十章 施工用电总承包治

7、理 PAGEREF _Toc26327 105 HYPERLINK l _Toc24922 一、 治理流程 PAGEREF _Toc24922 106 HYPERLINK l _Toc8569 二、 治理要点 PAGEREF _Toc8569 106 HYPERLINK l _Toc7128 三、 施工现场临时用资料治理 PAGEREF _Toc7128 108 HYPERLINK l _Toc24440 四、 停电事故预防措施 PAGEREF _Toc24440 110 HYPERLINK l _Toc5011 第十一章 应急措施及救援预案 PAGEREF _Toc5011 111 HYPE

8、RLINK l _Toc29888 第十二章 施工用电总平面布置 PAGEREF _Toc29888 114 编制依据序号名称编号1建筑电气工程施工施质量验收规范GB50303-20152建筑施工现场供用电安全规范GB5019420143施工现场临时用电安全技术规范JGJ4620054建筑施工安全检查标准JGJ59-20115建筑施工现场临时建筑物技术规范JGJ/T188-20096建筑工程施工现场消防安全技术规范GB50720-20117低压配电设计规范GB50054-20118通用用电设备配电设计规范GB50055-20119供配电系统设计规范GB50052-200910环境与职业健康安全

9、体系11本工程施工图12本工程施工组织设计 工程概况总体工程概况工程名称地理位置建设单位设计单位勘察单位监理单位本项目为二期四栋双层仓库，其中，3号库房22306.02m2, 4号库房23455.28 m2 ，5号库房23382.10 m2，6号库房24066.46 m2，仓库为锤击桩、承台基础，一、二层为框架结构，屋面及墙面等维护结构为轻钢结构。局部区域设置有办公及设备夹层。一层仓库结构层高为11.00m，二层仓库结构层高为10.00m。施工场地差不多概况为满足施工进度及运输要求，每一个库预备投入2台QTZ6013塔吊，一共8台塔吊。以及其他加工设备（见设备及功率明细表）。现场布置8个钢筋加

10、工车间和2个木工加工车间，每2栋仓库统一设置一个一级配电柜。电源接驳点概况本工程电源接驳点分不位于场地南侧七库外侧的800KVA的配电房，现场可提供本工程临时用电量容量为800KVA。本工程按项目总的进度打算结合本方案第五章第一条第7点和第14点和17点计算结果，到最高峰时的用电量为497.58KVA，满足施工需求。本工程采纳三级配电，从总配电室到各一级配电柜，一级配电柜到各二级配电箱，各库二及配电箱至各用电点三级开关箱。 施工部署总体目标质量目标：合格，一次验收合格率100%。安全目标：坚持“安全第一、预防为主”的工作方针，确保无重大工伤事故，轻伤频率操纵在4以内。现场临时用电部署：三级配电

11、二级爱护现场在变压器旁设置总配电室各一级配电柜各栋分不设置3个二级配电箱各设备专用插座箱、照明专用箱为三级箱；本工程分期建设：一期有1号、2号库区及配套用房；二期有3号、4号、5号、6号四栋库区及配套用房，本方案为二期施工用电方案。在3号库、4号库之间设置1#一级配电柜、5号库、6号库之间设置2#一级配电柜、办公区和生活区设置专用3#一级配电柜。依照总进度打算安排，每栋库房之间开始施工的时刻顺序相差十天；一套基础锤击桩所使用的设备需用70KW，按三套设备同时施工共有210KW,锤击桩设备施工的时候，其他如钢筋、模板加工设备还没有投入使用，塔吊也没有完全投入使用，同时三套锤击桩的负荷小于基础主体

12、施工时期用电设备的负荷，因此在施工临时用电负荷计算的时候，不考虑锤击设备的用电负荷。主体施工时期及装饰装修期间用电高峰是塔吊、钢筋加工、模板加工设备同时使用的时期，因此最大负荷要紧考虑各楼层施工机具、照明、模板加工，塔吊运转及钢筋加工的用电。拟从配电房设置一个主线路到总配电室；3号4号库共用1#一级配电柜，5号6号库共用2#一级配电柜、办公区和生活区共用3#一级配电柜；各一级配电柜分不设置4条线路至固定二级配电箱（钢筋加工场地配电箱和塔吊配电箱）和2条线路至各栋物流库楼层的移动二级配电箱（楼层用电配电箱）。从二级箱引出线至三级箱及专用设备操纵箱，实现一机一闸一漏。组织机构项目成立项目施工用电总

13、承包治理机构，治理机构如下：图略组长：副组长：组员：组长XX负责整个项目施工用电的方案审核、施工及治理工作；副组长项目技术负责人XX负责施工用电方案的编制及方案流程报审，各分包单位用电方案的审核，并对方案进行交底和技术核定；各组员XX负责整个施工现场施工用电的施工、检查及施工用电总承包治理；XX要紧依照方案编制要求及现场实际情况对施工用电布置进行指导及检查，中期要紧对项目设备施工用电进行维护及治理，后期要紧进行施工用电总承包治理。XX负责施工用电材料的采购；XX负责施工用电的施工及治理；质检员负责对现场施工用电质量进行监督治理并进行相关报验工作安全总监、安全员要紧负责施工用电的安全治理；同时施

14、工用电总承包治理机构各成员均需对施工用电的安全进行治理。技术预备组织各岗位治理人员学习有关法律、法规、规范、图纸，经考核合格后持证上岗，杜绝无证上岗现象。召开现场技术交底会议，就现场临电工程施工技术要求对现场机管员、电工、操作工人进行交底，使其施工前作好充分预备。对劳务队伍全体人员进行进场前安全文明施工教育及治理宣传。对专门工作作业人员去专业的机构培训，考核合格取证后方可上岗。施工作业人员入场教育施工用电作业人员先必须通过项目安全员、主管工长、机管员、劳资员及保卫组织的项目安全常识系统教育，并建立相应的档案资料。施工用电作业人员分配到工作面后，应由项目机管员结合工程的具体情况及特点作专项技术交

15、底。并形成相应记录。针对施工过程中时期性出现的具有的特定性的安全问题及隐患，机管员必须现场作针对性交底，并形成相关记录。劳动力预备据施工时刻的划分，选定一支劳务分包单位进行施工用电施工，每支劳务队伍必须配置专业电工且必须持证上岗。序号工种人数备注1治理人员102电工63普工12机具预备序号设备名称单位数量备注1穿线器套1用于电缆管内穿线2电工工具套6用于电缆的搭接3压接钳套1用于电缆头压接材料预备名称单位数量型号备注总配电室个1变压器开关柜出至项目总配电室的配电箱一级配电柜个3二期施工总配电箱固定二级配电柜个14为每个库区和办公生活区移动三级配电箱及设备专用箱个4用于楼层配电，每栋配置一个每台

16、设备及生活区、办公区每栋楼配置一个开关箱铝芯绝缘电缆m1380mVLV3*150mm+2*70mm电缆铝芯绝缘电缆m420mVLV3*70mm+2*35mm电缆铝芯绝缘电缆m2220mVLV3*50mm+2*25mm电缆铝芯绝缘电缆m800mVLV3*25mm+2*16mm电缆 临时用电布置讲明 本施工现场临时用电施工组织设计通过计算选择合理导线截面积，电器设备及操纵方式，既能满足现场施工用电需要，又能保障现场安全用电的要求，做到节能、方便，规范、标准。 依照施工现场用电设施布置情况，从配电室至一级配电柜施工区域电缆采纳穿管暗埋方式。电缆线从项目总配电室引入一级配电柜，由一级配电柜再分不设置回

17、路至二级配电箱，由二级配电箱供至各机械设备开关箱等，应当配电合理，互不干扰防止因电气故障阻碍施工。一级配电柜与二级配电箱之间电缆场地情况选择穿管埋设方式。二级配电箱与用电设备之间电线选择架空敷设。埋设和架空敷设方式和注意事项详见本方案第七章相关要求。参数设置1.一级配电柜参数（1）1#一级配电柜参数用电接驳方式由总配电室接入一级配电柜编号1#一级配电柜一级配电柜距接驳点布线距离Lo(m)20一级配电柜的同期使用系数Kx0.8分配电箱数量6导线线芯材料铝线一级配电柜进线敷设方式埋地暗敷二级配电箱进线敷设方式埋地暗敷设备电线敷设方式埋地暗敷/架空线路干线同意电压降%5（2）2#一级配电柜参数用电接

18、驳方式由总配电室接入一级配电柜编号2#一级配电柜一级配电柜距接驳点布线距离Lo(m)20一级配电柜的同期使用系数Kx0.8分配电箱数量6导线线芯材料铝线一级配电柜进线敷设方式埋地暗敷二级配电箱进线敷设方式埋地暗敷设备电线敷设方式埋地暗敷/架空线路干线同意电压降%5（3）3#一级配电柜参数用电接驳方式由总配电室接入一级配电柜编号3#一级配电柜一级配电柜距接驳点布线距离Lo(m)20一级配电柜的同期使用系数Kx0.8分配电箱数量2导线线芯材料铝线一级配电柜进线敷设方式埋地暗敷二级配电箱进线敷设方式埋地暗敷设备电线敷设方式埋地暗敷/架空线路干线同意电压降%102.供电系统设置总箱编号干线名称分配电箱

19、编号安装部位同期使用系数Kx（m）功率因素Cos分箱到一级配电箱布线距离1#一级配电柜1号干线3-1号二级配电箱3#物流库塔吊0.70.7570m2号干线3-2号二级配电箱3#物流库钢筋、木工加工区0.70.75150m3号干线3-3号二级配电箱3#物流库楼层0.70.75120m4号干线4-1号二级配电箱4#物流库塔吊0.70.7570m5号干线4-2号二级配电箱4#物流库钢筋、木工加工区0.70.75150m6号干线4-3号二级配电箱4#物流库楼层0.70.75120m2#一级配电柜7号干线5-1号二级配电箱5#物流库塔吊0.70.7570m8号干线5-2号二级配电箱5#物流库钢筋、木工加

20、工区0.70.75150m9号干线5-3号二级配电箱5#物流库楼层0.70.75120m10号干线6-1号二级配电箱6#物流库塔吊0.70.7570m11号干线6-2号二级配电箱6#物流库钢筋、木工加工区0.70.75150m12号干线6-3号二级配电箱6#物流库楼层0.70.75120m3#一级配电柜13号干线7号二级配电箱办公区14号干线8号二级配电箱生活区3.用电设备参数（1）1#一级配电柜用电设备参数（2）2#一级配电柜用电设备参数（3）3#一级配电柜用电设备参数4.临电设备配置参数（1）1#一级配电柜各分箱用电设备配置参数（2）2#一级配电柜各分箱用电设备配置参数（3）3#一级配电柜

21、各分箱用电设备配置参数临电初步设计原则施工现场临时用电安全技术规范（JGJ46-2005）总则中以强制性条文规定，施工现场必须采纳三级配电系统、必须采纳TN-S接零爱护系统。现场采纳380V低压供电，设一配电1#一级配电柜，采纳TN-S系统供电。布置位置及线路走向参见临时配电系统图，采纳三级配电，三级防护。按照JGJ46-2005规定制定施工组织设计，接地电阻R4。按照JGJ46-2005规定若为架空线路则“依照机械强度要求，绝缘铜线截面不小于10mm2，绝缘铝线截面不小于16mm2”。 临时用电计算用电负荷计算1、3-1号二级配电箱设备用电负荷(1)1#塔式起重机Kx = 0.7，Cos =

22、 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 32.80 (0.40 / 0.25)0.5 = 41.49kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 41.49 1000 / (1.732 380 0.65) = 67.89APjs = Kx Pe = 0.70 41.49 = 29.04kWQjs = Pjs tg = 29.04 1.17 = 33.95kvA(2)2#塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 -

23、Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 32.80 (0.40 / 0.25)0.5 = 41.49kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 41.49 1000 / (1.732 380 0.65) = 67.89APjs = Kx Pe = 0.70 41.49 = 29.04kWQjs = Pjs tg = 29.04 1.17 = 33.95kvA(3)LED泛光灯照明Kx = 0.6，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos =

24、(1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 2.00 0.40 (0.40 / 0.40)0.5 = 0.80kWIj1 = Kx Pe / (1.732 Ue cos) = 0.60 0.80 1000 / (1.732 380 0.60) = 1.22APjs = Kx Pe = 0.60 0.80 = 0.48kWQjs = Pjs tg = 0.48 1.33 = 0.64kvA(4)塔吊臂灯Kx = 0.6，Cos = 0.9，tg = (1 - Cos2)0.5/ Cos = (1 - 0.92)0.5 / 0.9 = 0.48Pe =

25、 n P (e/)0.5 = 8.00 1.00 (0.40 / 0.40)0.5 = 8.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.60 8.00 1000 / (1.732 380 0.90) = 8.10APjs = Kx Pe = 0.60 8.00 = 4.80kWQjs = Pjs tg = 4.80 0.48 = 2.32kvA(5)3-1号二级配电箱计算负荷用电设备同期使用系数Kx=0.70；Ijs = Kx Pe / (1.732 Ue Cos) = 0.70 91.78 1000 / (1.732 380 0.75) = 130.15A；同时

26、要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max130.15,1.1max(67.89,67.89,1.22,8.10,) = 130.15A2、3-2号二级配电箱设备用电负荷(1)钢筋切断机Kx = 0.2，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 2.20 (0.40 / 0.40)0.5 = 2.20kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 2.20 1000 / (1.732 380

27、 0.65) = 1.03APjs = Kx Pe = 0.20 2.20 = 0.44kWQjs = Pjs tg = 0.44 1.17 = 0.51kvA(2)钢筋弯曲机Kx = 0.65，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 2.00 3.00 (0.40 / 0.40)0.5 = 6.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 6.00 1000 / (1.732 380 0.70) = 8.47APjs = Kx Pe =

28、0.65 6.00 = 3.90kWQjs = Pjs tg = 3.90 1.02 = 3.98kvA(3)钢筋套丝机Kx = 0.2，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 4.00 (0.40 / 0.40)0.5 = 4.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 4.00 1000 / (1.732 380 0.65) = 1.87APjs = Kx Pe = 0.20 4.00 = 0.80kWQjs = Pj

29、s tg = 0.80 1.17 = 0.94kvA(4)钢筋箍筋弯曲机Kx = 0.2，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 3.00 (0.40 / 0.40)0.5 = 3.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 3.00 1000 / (1.732 380 0.65) = 1.40APjs = Kx Pe = 0.20 3.00 = 0.60kWQjs = Pjs tg = 0.60 1.17 = 0.70k

30、vA(5)数控钢筋调直切断机Kx = 0.2，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 3.00 (0.40 / 0.40)0.5 = 3.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 3.00 1000 / (1.732 380 0.65) = 1.40APjs = Kx Pe = 0.20 3.00 = 0.60kWQjs = Pjs tg = 0.60 1.17 = 0.70kvA(6)电动切割机Kx = 0.3，Cos

31、 = 0.45，tg = (1 - Cos2)0.5/ Cos = (1 - 0.452)0.5 / 0.45 = 1.98Pe = n P (e/)0.5 = 1.00 1.80 (0.40 / 0.40)0.5 = 1.80kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.80 1000 / (1.732 380 0.45) = 1.82APjs = Kx Pe = 0.30 1.80 = 0.54kWQjs = Pjs tg = 0.54 1.98 = 1.07kvA(7)木工圆锯Kx = 0.65，Cos = 0.6，tg = (1 - Cos2)0.5/

32、 Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 1.00 1.50 (0.40 / 0.40)0.5 = 1.50kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 1.50 1000 / (1.732 380 0.60) = 2.47APjs = Kx Pe = 0.65 1.50 = 0.98kWQjs = Pjs tg = 0.98 1.33 = 1.30kvA(8)木工平刨床Kx = 0.65，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 =

33、 1.33Pe = n P (e/)0.5 = 1.00 3.00 (0.40 / 0.40)0.5 = 3.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 3.00 1000 / (1.732 380 0.60) = 4.94APjs = Kx Pe = 0.65 3.00 = 1.95kWQjs = Pjs tg = 1.95 1.33 = 2.60kvA(9)LED泛光灯照明Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.

34、00 0.30 (0.50 / 0.50)0.5 = 0.30kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 0.30 1000 / (1.732 380 0.70) = 0.20APjs = Kx Pe = 0.30 0.30 = 0.09kWQjs = Pjs tg = 0.09 1.02 = 0.09kvA(10)3-2号二级配电箱计算负荷用电设备同期使用系数Kx=0.70；Ijs = Kx Pe / (1.732 Ue Cos) = 0.70 24.80 1000 / (1.732 380 0.75) = 35.17A；同时要求分箱用电负荷不得小于分箱下用电

35、设备最大计算负荷的1.1倍，故：Ijs = max35.17,1.1max(1.03,8.47,1.87,1.40,1.40,1.82,2.47,4.94,0.20,) = 35.17A3、3-3号二级配电箱设备用电负荷(1)插入式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 4.00 1.10 (0.40 / 0.40)0.5 = 4.40kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 4.40 1000 / (1.732 3

36、80 0.70) = 2.87APjs = Kx Pe = 0.30 4.40 = 1.32kWQjs = Pjs tg = 1.32 1.02 = 1.35kvA(2)直流电焊机Kx = 0.3，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 4.00 10.00 (0.50 / 1.00)0.5 = 28.28kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 28.28 1000 / (1.732 380 0.60) = 21.49APjs = Kx

37、Pe = 0.30 28.28 = 8.49kWQjs = Pjs tg = 8.49 1.33 = 11.31kvA(3)冲击锤钻Kx = 0.2，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 6.00 1.00 (0.40 / 0.40)0.5 = 6.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 6.00 1000 / (1.732 380 0.70) = 2.60APjs = Kx Pe = 0.20 6.00 = 1.20kWQjs =

38、 Pjs tg = 1.20 1.02 = 1.22kvA(4)楼层各种照明Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 10.00 (0.40 / 0.50)0.5 = 8.94kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 8.94 1000 / (1.732 380 0.70) = 5.82APjs = Kx Pe = 0.30 8.94 = 2.68kWQjs = Pjs tg = 2.68 1.02 = 2.74k

39、vA(5)3-3号二级配电箱计算负荷用电设备同期使用系数Kx=0.70；Ijs = Kx Pe / (1.732 Ue Cos) = 0.70 47.63 1000 / (1.732 380 0.75) = 67.54A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max67.54,1.1max(2.87,21.49,2.60,5.82,) = 67.54A4、4-1号二级配电箱设备用电负荷(1)3#塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17

40、Pe = n P (e/)0.5 = 1.00 32.80 (0.40 / 0.25)0.5 = 41.49kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 41.49 1000 / (1.732 380 0.65) = 67.89APjs = Kx Pe = 0.70 41.49 = 29.04kWQjs = Pjs tg = 29.04 1.17 = 33.95kvA(2)4#塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5

41、 = 1.00 32.80 (0.40 / 0.25)0.5 = 41.49kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 41.49 1000 / (1.732 380 0.65) = 67.89APjs = Kx Pe = 0.70 41.49 = 29.04kWQjs = Pjs tg = 29.04 1.17 = 33.95kvA(3)LED泛光灯照明Kx = 0.6，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 2.00 0.40 (0.40

42、 / 0.40)0.5 = 0.80kWIj1 = Kx Pe / (1.732 Ue cos) = 0.60 0.80 1000 / (1.732 380 0.60) = 1.22APjs = Kx Pe = 0.60 0.80 = 0.48kWQjs = Pjs tg = 0.48 1.33 = 0.64kvA(4)塔吊臂灯Kx = 0.6，Cos = 0.9，tg = (1 - Cos2)0.5/ Cos = (1 - 0.92)0.5 / 0.9 = 0.48Pe = n P (e/)0.5 = 8.00 1.00 (0.40 / 0.40)0.5 = 8.00kWIj1 = Kx P

43、e / (1.732 Ue cos) = 0.60 8.00 1000 / (1.732 380 0.90) = 8.10APjs = Kx Pe = 0.60 8.00 = 4.80kWQjs = Pjs tg = 4.80 0.48 = 2.32kvA(5)4-1号二级配电箱计算负荷用电设备同期使用系数Kx=0.70；Ijs = Kx Pe / (1.732 Ue Cos) = 0.70 91.78 1000 / (1.732 380 0.75) = 130.15A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max130.15,1.1max(67.8

44、9,67.89,1.22,8.10,) = 130.15A5、4-2号二级配电箱设备用电负荷(1)钢筋切断机Kx = 0.2，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 2.20 (0.40 / 0.40)0.5 = 2.20kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 2.20 1000 / (1.732 380 0.65) = 1.03APjs = Kx Pe = 0.20 2.20 = 0.44kWQjs = Pjs tg =

45、 0.44 1.17 = 0.51kvA(2)钢筋弯曲机Kx = 0.65，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 2.00 3.00 (0.40 / 0.40)0.5 = 6.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 6.00 1000 / (1.732 380 0.70) = 8.47APjs = Kx Pe = 0.65 6.00 = 3.90kWQjs = Pjs tg = 3.90 1.02 = 3.98kvA(3)钢筋套丝机

46、Kx = 0.2，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 4.00 (0.40 / 0.40)0.5 = 4.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 4.00 1000 / (1.732 380 0.65) = 1.87APjs = Kx Pe = 0.20 4.00 = 0.80kWQjs = Pjs tg = 0.80 1.17 = 0.94kvA(4)钢筋箍筋弯曲机Kx = 0.2，Cos = 0.65，tg =

47、 (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 3.00 (0.40 / 0.40)0.5 = 3.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 3.00 1000 / (1.732 380 0.65) = 1.40APjs = Kx Pe = 0.20 3.00 = 0.60kWQjs = Pjs tg = 0.60 1.17 = 0.70kvA(5)数控钢筋调直切断机Kx = 0.2，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos =

48、(1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 3.00 (0.40 / 0.40)0.5 = 3.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 3.00 1000 / (1.732 380 0.65) = 1.40APjs = Kx Pe = 0.20 3.00 = 0.60kWQjs = Pjs tg = 0.60 1.17 = 0.70kvA(6)电动切割机Kx = 0.3，Cos = 0.45，tg = (1 - Cos2)0.5/ Cos = (1 - 0.452)0.5 / 0.45 = 1.

49、98Pe = n P (e/)0.5 = 1.00 1.80 (0.40 / 0.40)0.5 = 1.80kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.80 1000 / (1.732 380 0.45) = 1.82APjs = Kx Pe = 0.30 1.80 = 0.54kWQjs = Pjs tg = 0.54 1.98 = 1.07kvA(7)木工圆锯Kx = 0.65，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 1.00 1.5

50、0 (0.40 / 0.40)0.5 = 1.50kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 1.50 1000 / (1.732 380 0.60) = 2.47APjs = Kx Pe = 0.65 1.50 = 0.98kWQjs = Pjs tg = 0.98 1.33 = 1.30kvA(8)木工平刨床Kx = 0.65，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 1.00 3.00 (0.40 / 0.40)0.5 = 3.00kWI

51、j1 = Kx Pe / (1.732 Ue cos) = 0.65 3.00 1000 / (1.732 380 0.60) = 4.94APjs = Kx Pe = 0.65 3.00 = 1.95kWQjs = Pjs tg = 1.95 1.33 = 2.60kvA(9)LED泛光灯照明Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 0.30 (0.50 / 0.50)0.5 = 0.30kWIj1 = Kx Pe / (1.732 Ue cos

52、) = 0.30 0.30 1000 / (1.732 380 0.70) = 0.20APjs = Kx Pe = 0.30 0.30 = 0.09kWQjs = Pjs tg = 0.09 1.02 = 0.09kvA(10)4-2号二级配电箱计算负荷用电设备同期使用系数Kx=0.70；Ijs = Kx Pe / (1.732 Ue Cos) = 0.70 24.80 1000 / (1.732 380 0.75) = 35.17A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max35.17,1.1max(1.03,8.47,1.87,1.40,1.

53、40,1.82,2.47,4.94,0.20,) = 35.17A6、4-3号二级配电箱设备用电负荷(1)插入式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 4.00 1.10 (0.40 / 0.40)0.5 = 4.40kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 4.40 1000 / (1.732 380 0.70) = 2.87APjs = Kx Pe = 0.30 4.40 = 1.32kWQjs = Pjs tg

54、 = 1.32 1.02 = 1.35kvA(2)直流电焊机Kx = 0.3，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 4.00 10.00 (0.50 / 1.00)0.5 = 28.28kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 28.28 1000 / (1.732 380 0.60) = 21.49APjs = Kx Pe = 0.30 28.28 = 8.49kWQjs = Pjs tg = 8.49 1.33 = 11.31kvA(

55、3)冲击锤钻Kx = 0.2，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 6.00 1.00 (0.40 / 0.40)0.5 = 6.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.20 6.00 1000 / (1.732 380 0.70) = 2.60APjs = Kx Pe = 0.20 6.00 = 1.20kWQjs = Pjs tg = 1.20 1.02 = 1.22kvA(4)楼层各种照明Kx = 0.3，Cos = 0.7，tg

56、= (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 10.00 (0.40 / 0.50)0.5 = 8.94kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 8.94 1000 / (1.732 380 0.70) = 5.82APjs = Kx Pe = 0.30 8.94 = 2.68kWQjs = Pjs tg = 2.68 1.02 = 2.74kvA(5)4-3号二级配电箱计算负荷用电设备同期使用系数Kx=0.70；Ijs = Kx Pe / (1.732 Ue

57、Cos) = 0.70 47.63 1000 / (1.732 380 0.75) = 67.54A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max67.54,1.1max(2.87,21.49,2.60,5.82,) = 67.54A7、1#一级配电柜计算负荷总的计算负荷计算，一级配电柜用电设备同期使用系数取Kx = 0.80总的有功功率： Pjs = KxPjs = 0.80 173.90 = 139.12kW总的无功功率： Qjs = KxQjs = 0.80 198.78 = 159.02kvar总的视在功率： Sjs = (Pjs2 + Qj

58、s2)0.5 = (139.12 139.12 + 159.02 159.02)0.5 = 211.29kVA总的计算电流计算：Ijs = Sjs 1000 /(1.732 Ue) = 211.29 1000 / (1.732 380) = 321.03A同时要求1#一级配电柜下计算负荷不得小于分箱计算负荷的1.1倍，故：Ijs = max321.03,1.1max(130.15,35.17,67.54,130.15,35.17,67.54,) = 321.03A8、5-1号二级配电箱设备用电负荷(1)5#塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/

59、 Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 32.80 (0.40 / 0.25)0.5 = 41.49kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 41.49 1000 / (1.732 380 0.65) = 67.89APjs = Kx Pe = 0.70 41.49 = 29.04kWQjs = Pjs tg = 29.04 1.17 = 33.95kvA(2)6#塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.65

60、2)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 32.80 (0.40 / 0.25)0.5 = 41.49kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 41.49 1000 / (1.732 380 0.65) = 67.89APjs = Kx Pe = 0.70 41.49 = 29.04kWQjs = Pjs tg = 29.04 1.17 = 33.95kvA(3)LED泛光灯照明Kx = 0.6，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.3