临时用电施工方案.doc

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文本预览:PAGE / NUMPAGESEvaluation Only. Created with Aspose.Words. Copyright 2003-2016 Aspose Pty Ltd.临时用电施工方案一、工程概况工程名称:×××大厦建设单位:×××淄博有限公司施工单位:×××有限公司层数:地下二层、地上十八层结构形式:框架建筑面积:43000m2开竣工日期:2003年10月31日~2005年5月1日项目经理:×××二、负荷计算本工程接受TN-S系统,设二个总箱,六个分箱,18个开关箱。临时设备用电一览表1#总箱分箱号设备名称设备功率分箱功率F1塔吊34.757.7潜水泵4卷扬机5电锯4F2切断机2.247.9弯曲机3对焊机38套丝机2.2切断机2.2F3切割机228.5电焊机11照明152#总箱随层箱振动棒(4条)66F1镝灯(4个)1414F2地下室潜水泵1118弯曲机3电刨41、1#总箱(1)总电缆进线选择∑P总=134.1查表kx取0.6 cosp=0.65 tgp=1.17Pj2=kx. ∑Pel=0.6×134.1=80.46KWQj2=Pj2.tgp=80.46×1.17=94.1KWARSj2=√Pj22+Qj22 =123.8KVA允许持续通过电流kx.s0.6×kx.s0.6×123.8√3.u.cosp1.732×0.38×0.7√3.u.cosp1.732×0.38×0.7查表知:选择50mm2即可满足需要。(2)分箱电缆选择1#分箱∑Pel=57.7KW查表kx取0.7 cosp=0.7 tgp=1.02Pj2=kx. ∑Pel=0.7×57.7=40.4KWQj2=Pj2.tgp=40.4×1.02=41.2KVARSj2=√Pj22+Qj22 =57.7KVA允许持续通过电流kx.s0.7×57.7√3.u.cosp1.732×0.38kx.s0.7×57.7√3.u.cosp1.732×0.38×0.7查表知:选择25mm2即可满足需要。2#分箱:∑Pe2=47.9KW查表kx取0.7 cosp=0.7 tgp=1.02Pj2=kx.∑Pe2=0.7×47.9=33.53KWQj2=Pj2.tgp=33.53×1.02=34.2KVARSj2=√Pj22+Qj22 =47.9KVA允许持续通过电流kx.s0.7×47.9√3.u.cosp1.732×kx.s0.7×47.9√3.u.cosp1.732×0.38×0.7查表知:选择25mm2即可满足需要。3#分箱:∑Pe3=28.5KW查表kx取0.7 cosp=0.7 tgp=1.02Pj2=kx.∑Pe3=0.7×28.5=19.95KWQj2=Pj2.tgp=19.95×1.02=20.4KVASj2=√Pj22+Qj22 =28.5KVA允许持续通过电流kx.s0.7×28.5√3.u.cosp1.732×kx.s0.7×28.5√3.u.cosp1.732×0.38×0.7查表知:选择16mm2电缆即可满足需要。(3)各支路途径选择塔 吊:34.7÷=91A 查表选线16 mm2潜水泵:4÷0.38=10.5A 查表选线4mm2卷扬机:5÷0.38=13 查表选线4mm2电 锯:4÷0.38=10.5A 查表选线4mm2切断机:2.2÷0.38=5.8A 查表选线4mm2弯曲机:3÷0.38=7.8A 查表选线4mm2对焊机:3.8÷0.38=100A 查表选线16mm2套丝机:2.2÷0.38=5.8A 查表选线4mm2切断机:2.2÷0.38=5.8A 查表选线4mm2切割机:2÷0.38=5.3A 查表选线4mm2电焊机:11÷0.38 =28.9A 查表选线6mm22、2#总箱(1)总电缆进线选择∑P总=38查表kx取0.7 cosp=0.7 tgp=1.02Pj2=kx. ∑Pel=0.7×38=26.6KWQj2=Pj2.tgp=26.6×1.02=27KWARSj2=√ Pj22+Qj22 =38KVA允许持续通过电流kx.s0.7×kx.s0.7×38√3.u.cosp1.732×0.38×0.7 √3.u.cosp1.732×0.38×0.7查表知:选择16mm2即可满足需要。(2)随层箱电缆选择∑Pel=6KW查表kx取0.7 cosp=0.7 tgp=1.02Pj2=kx. ∑Pel=0.7×6=4.2KWQj2=Pj2.tgp=4.2×1.02=4.28KVARSj2=√Pj22+Qj22 =6KVA允许持续通过电流kx.s0.7×6√3.u.cosp1.732×kx.s0.7×6√3.u.cosp1.732×0.38×0.7查表知:选择6mm2即可满足需要。1#分箱:∑Pe2=14KW查表kx取0.7 cosp=0.7 tgp=1.02This document was truncated here because it was created in the Evaluation Mode.
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