【正文】 導(dǎo)線選擇BLV425+116 。iii)選擇電氣設(shè)備選擇開關(guān)箱內(nèi)開關(guān)為Hk115/4 ，熔斷器RC1A10其最大熔體電流為 IRD = ，可根，漏電保護器為 DZ10L100/4。iii)選擇電氣設(shè)備選擇開關(guān)箱內(nèi)開關(guān)為DZ10100/4 ，其脫扣器整定電流值為Ir = 。iii)選擇電氣設(shè)備選擇開關(guān)箱內(nèi)開關(guān)為DZ10250/4 ，其脫扣器整定電流值為Ir = 。2號干線線路上導(dǎo)線截面及分配箱、開關(guān)箱內(nèi)電氣設(shè)備選擇:在選擇前應(yīng)對照平面圖和系統(tǒng)圖先由用電設(shè)備至開關(guān)箱計算，再由開關(guān)箱至分配箱計算，選擇導(dǎo)線及開關(guān)設(shè)備。(6)2號分箱進線及進線開關(guān)的選擇i)計算電流Kx = ，Cosφ = Ijs = KxPe /(Ue Cosφ) = () = 該分箱下最大組線電流Ijs=兩者中取大值Ijs=ii)選擇導(dǎo)線選擇BLV470+135 。(4)、2號分箱至第2組電機(生活區(qū)用電)的開關(guān)箱的導(dǎo)線截面及分配箱內(nèi)開關(guān)的選擇i) 計算電流生活區(qū)用電Kx = Cosφ= tgφ= Ijs = KxPe 臺數(shù)/(Ue Cosφ) = 1/() = Ijs(2組電機 )= 該組中最大的開關(guān)箱電流Ijs=兩者中取大值Ijs=ii)選擇導(dǎo)線選擇BLV470+135 。iii)選擇電氣設(shè)備選擇開關(guān)箱內(nèi)開關(guān)為DZ10250/4 ，其脫扣器整定電流值為Ir = 。iii)選擇電氣設(shè)備選擇開關(guān)箱內(nèi)開關(guān)為DZ10250/4 ，其脫扣器整定電流值為Ir = 。確定用電負荷:(1)、辦公區(qū)用電Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(2)、生活區(qū)用電Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(3)、塔式起重機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(4)、混凝土輸送泵Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(5)、鋼筋調(diào)直機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(6)、鋼筋切斷機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(7)、鋼筋彎曲機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(8)、交流電焊機Kx = Cosφ = tgφ = 將Jc =50%統(tǒng)一換算到Jc1 =100%的額定容量Pn = Sn Cosφ = =Pe = n(Jc/Jc1)1/2Pn = 1()1/2 = kWPjs = KxPe = = Qjs = Pjs tgφ= = kvar(9)、插入式振動器Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(10)、平板式振動器Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(11)、木工圓鋸Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(12)、泥漿泵Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(13)、套絲切管機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(14)、電動液壓彎管機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(15)、塔式起重機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(16)、空壓機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(17)、木工圓鋸Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(18)、交流電焊機Kx = Cosφ = tgφ = 將Jc =50%統(tǒng)一換算到Jc1 =100%的額定容量Pn = Sn Cosφ = =Pe = n(Jc/Jc1)1/2Pn = 1()1/2 = kWPjs = KxPe = = Qjs = Pjs tgφ= = kvar(19)、塔式起重機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(20)、混凝土輸送泵Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(21)、鋼筋彎曲機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(22)、鋼筋切斷機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(23)、鋼筋調(diào)直機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(24)、交流電焊機Kx = Cosφ = tgφ = 將Jc =50%統(tǒng)一換算到Jc1 =100%的額定容量Pn = Sn Cosφ = =Pe = n(Jc/Jc1)1/2Pn = 1()1/2 = kWPjs = KxPe = = Qjs = Pjs tgφ= = kvar(25)、木工圓鋸Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(26)、插入式振動器Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(27)、平板式振動器Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(28)、塔式起重機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(29)、混凝土輸送泵Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(30)、鋼筋切斷機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(31)、鋼筋調(diào)直機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(32)、鋼筋彎曲機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(33)、交流電焊機Kx = Cosφ = tgφ = 將Jc =50%統(tǒng)一換算到Jc1 =100%的額定容量Pn = Sn Cosφ = =Pe = n(Jc/Jc1)1/2Pn = 1()1/2 = kWPjs = KxPe = = Qjs = Pjs tgφ= = kvar(34)、木工圓鋸Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(35)、泥漿泵Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(36)總的計算負荷計算，總箱同期系數(shù)取 Kx = 總的有功功率Pjs = KxΣPjs = (++++++++++++++++++++++++++++++++++) = kW總的無功功率Qjs = KxΣQjs =(++++++++++++++++++++++++++++++++++) = kvar總的視在功率Sjs = ( Pjs2+Qjs2 )1/2 = (+)1/2 = kVA總的計算電流計算Ijs = Sjs/(Ue) = () = A1號干線線路上導(dǎo)線截面及分配箱、開關(guān)箱內(nèi)電氣設(shè)備選擇:在選擇前應(yīng)對照平面圖和系統(tǒng)圖先由用電設(shè)備至開關(guān)箱計算，再由開關(guān)箱至分配箱計算，選擇導(dǎo)線及開關(guān)設(shè)備。一、編制依據(jù)《低壓配電設(shè)計規(guī)范》GB500542011中國建筑工業(yè)出版社《建筑工程施工現(xiàn)場供電安全規(guī)范》GB501942011中國建筑工業(yè)出版社《通用用電設(shè)備配電設(shè)計規(guī)范》GB500552011中國建筑工業(yè)出版社《供配電系統(tǒng)設(shè)計規(guī)范》GB500522009中國建筑工業(yè)出版社《施工現(xiàn)場臨時用電安全技術(shù)規(guī)范》JGJ462012中國建筑工業(yè)出版社二、施工條件施工現(xiàn)場用電量統(tǒng)計表:序號 機具名稱 型號 安裝功率(kW) 數(shù)量 合計功率(kW)1 辦公區(qū)用電 1 2 生活區(qū)用電 1 3 塔式起重機 QTZ63 1 4 混凝土輸送泵 HB15 1 5 鋼筋調(diào)直機 GT4/14 1 6 鋼筋切斷機 QJ40 1 7 鋼筋彎曲機 GW40 1 8 交流電焊機 BX35002 1 9 插入式振動器 ZX50 1 10 平板式振動器 ZB11 3 11 木工圓鋸 MJ104 3 12 泥漿泵 紅星30 1 13 套絲切管機 TQ3 1 14 WYQ 1 15 塔式起重機 QTZ63 1 16 空壓機 7 17 木工圓鋸 MJ104 3 18 交流電焊機 BX35002 1 19 塔式起重機 QTZ63 1 20 混凝土輸送泵 HB15 1 21 鋼筋彎曲機 GW40 1 22 鋼筋切斷機 QJ40 1 23 鋼筋調(diào)直機 GT4/14 1 24 交流電焊機 BX35002 1 25 木工圓鋸 MJ104 3 26 插入式振動器 ZX50 3 27 平板式振動器 ZB11 3 28