【正文】 關(guān)箱至分配箱計(jì)算，選擇導(dǎo)線及開(kāi)關(guān)設(shè)備。(13)3號(hào)動(dòng)力分箱進(jìn)線及進(jìn)線開(kāi)關(guān)的選擇i)計(jì)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XV4150 ，直接埋地時(shí)其安全載流量為326A。(11)、泥漿泵開(kāi)關(guān)箱至泥漿泵導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 130/() = ii)選擇導(dǎo)線選擇XV410 ，穿焊接鋼管時(shí)其安全載流量為0A。(9)、鋼筋彎曲機(jī)開(kāi)關(guān)箱至鋼筋彎曲機(jī)導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 13/() = ii)選擇導(dǎo)線選擇XV410 ，穿焊接鋼管時(shí)其安全載流量為0A。(7)、鋼筋調(diào)直機(jī)開(kāi)關(guān)箱至鋼筋調(diào)直機(jī)導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 1() = ii)選擇導(dǎo)線選擇XV410 ，穿焊接鋼管時(shí)其安全載流量為0A。(5)、插入式振動(dòng)器開(kāi)關(guān)箱至插入式振動(dòng)器導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 1() = ii)選擇導(dǎo)線選擇XV410 ，穿焊接鋼管時(shí)其安全載流量為0A。(3)、螺旋鉆孔機(jī)開(kāi)關(guān)箱至螺旋鉆孔機(jī)導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 190/() = ii)選擇導(dǎo)線選擇XV495 ，穿焊接鋼管時(shí)其安全載流量為0A。(1)、蛙式夯土機(jī)開(kāi)關(guān)箱至蛙式夯土機(jī)導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 1() = ii)選擇導(dǎo)線選擇XV410 ，穿焊接鋼管時(shí)其安全載流量為0A。(4)2號(hào)干線導(dǎo)線截面及出線開(kāi)關(guān)的選擇i) 計(jì)算電流：按導(dǎo)線安全載流量：Kx = ，Cosφ = Ijs = Kx∑Pe/(UeCosφ) = () = A該干線下最大的分配箱電流Ijs=選擇的電流Ijs=按允許電壓降：S = Kx∑(PL)/C△U = 59/(775) = mm2選擇XV470 ，直接埋地時(shí)其安全載流量為213A。(2)、2號(hào)動(dòng)力分箱至第1組電機(jī)(塔式起重機(jī))的開(kāi)關(guān)箱的導(dǎo)線截面及分配箱內(nèi)開(kāi)關(guān)的選擇i) 計(jì)算電流塔式起重機(jī)Kx = Cosφ= tgφ= Ijs = Kx Pe 臺(tái)數(shù)/(Ue Cosφ) = 1/() = Ijs(1組電機(jī) )= 該組中最大的開(kāi)關(guān)箱電流Ijs=兩者中取大值Ijs=ii)選擇導(dǎo)線選擇XV470 ，穿焊接鋼管時(shí)其安全載流量為0A。2號(hào)干線線路上導(dǎo)線截面及分配箱、開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇:在選擇前應(yīng)對(duì)照平面圖和系統(tǒng)圖先由用電設(shè)備至開(kāi)關(guān)箱計(jì)算，再由開(kāi)關(guān)箱至分配箱計(jì)算，選擇導(dǎo)線及開(kāi)關(guān)設(shè)備。(10)1號(hào)照明分箱進(jìn)線及進(jìn)線開(kāi)關(guān)的選擇i)計(jì)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XV410 ，直接埋地時(shí)其安全載流量為71A。(8)、高壓鈉燈開(kāi)關(guān)箱至高壓鈉燈導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 11/() = ii)選擇導(dǎo)線選擇XV410 ，穿焊接鋼管時(shí)其安全載流量為0A。(6)、碘鎢燈開(kāi)關(guān)箱至碘鎢燈導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 11/() = ii)選擇導(dǎo)線選擇XV410 ，穿焊接鋼管時(shí)其安全載流量為0A。(4)、熒光燈開(kāi)關(guān)箱至熒光燈導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 1() = ii)選擇導(dǎo)線選擇XV410 ，穿焊接鋼管時(shí)其安全載流量為0A。(2)、熒光燈開(kāi)關(guān)箱至熒光燈導(dǎo)線截面及開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇（開(kāi)關(guān)箱以下用電器啟動(dòng)后需要系數(shù)取1）:i)計(jì)算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 1() = ii)選擇導(dǎo)線選擇XV410 ，穿焊接鋼管時(shí)其安全載流量為0A。確定用電負(fù)荷:(1)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(2)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(3)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(4)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(5)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(6)、碘鎢燈Kx = Cosφ = tgφ = Pjs = 11 = kWQjs = Pjs tgφ= = kvar(7)、碘鎢燈Kx = Cosφ = tgφ = Pjs = 11 = kWQjs = Pjs tgφ= = kvar(8)、高壓鈉燈Kx = Cosφ = tgφ = Pjs = 1 = kWQjs = Pjs tgφ= = kvar(9)、塔式起重機(jī)Kx = Cosφ = tgφ = 將Jc =40%統(tǒng)一換算到Jc1 =25%的額定容量Pn = Pe = n(Jc/Jc1)1/2Pn = 1()1/2 = kWPjs = KxPe = = Qjs = Pjs tgφ= = kvar(10)、蛙式夯土機(jī)Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(11)、螺旋鉆孔機(jī)Kx = Cosφ = tgφ = Pjs = 90 = 27 kWQjs = Pjs tgφ=27 = kvar(12)、螺旋鉆孔機(jī)Kx = Cosφ = tgφ = Pjs = 90 = 27 kWQjs = Pjs tgφ=27 = kvar(13)、自落式混凝土攪拌機(jī)Kx = Cosφ = tgφ = Pjs = 15 = kWQjs = Pjs tgφ= = kvar(14)、插入式振動(dòng)器Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(15)、平板式振動(dòng)器Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(16)、鋼筋調(diào)直機(jī)Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(17)、鋼筋切斷機(jī)Kx = Cosφ = tgφ = Pjs = 3 = kWQjs = Pjs tgφ= = kvar(18)、鋼筋彎曲機(jī)Kx = Cosφ = tgφ = Pjs = 3 = kWQjs = Pjs tgφ= = kvar(19)、木工圓鋸Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(20)、泥漿泵Kx = Cosφ = tgφ = Pjs = 30 = kWQjs = Pjs tgφ= = kvar(21)、卷?yè)P(yáng)機(jī)Kx = Cosφ = tgφ = Pjs = 3 = kWQjs = Pjs tgφ= = kvar(22)、卷?yè)P(yáng)機(jī)Kx = Cosφ = tgφ = Pjs = 3 = kWQjs = Pjs tgφ= = kvar(23)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(24)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(25)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(26)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(27)、熒光燈Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(28)總的計(jì)算負(fù)荷計(jì)算，總箱同期系數(shù)取 Kx = 總的有功功率Pjs = Kx∑Pjs = (++++++++++27+27+++++++++++++++) = kW總的無(wú)功功率Qjs = Kx∑Qjs =(++++++++++++++++++++++++++) = kvar總的視在功率Sjs = ( Pjs2+Qjs2 )1/2 = (+)1/2 = kVA總的計(jì)算電流計(jì)算Ijs = Sjs/(Ue) = () = A1號(hào)干線線路上導(dǎo)線截面及分配箱、開(kāi)關(guān)箱內(nèi)電氣設(shè)備選擇:在選擇前應(yīng)對(duì)照平面圖和系統(tǒng)圖先由用電設(shè)備至開(kāi)關(guān)箱計(jì)算，再由開(kāi)關(guān)箱至分配箱計(jì)算，選擇導(dǎo)線及開(kāi)關(guān)設(shè)備。(2)現(xiàn)場(chǎng)采用380V低壓供電，設(shè)一配電總箱，內(nèi)有計(jì)量設(shè)備，采用TNS系統(tǒng)供電。工程說(shuō)明：本工程建設(shè)用地位于建筑總平圖中所示，本次開(kāi)發(fā)建設(shè)的*****中心（一期）機(jī)房樓工程位于D區(qū)地塊。本工程由中國(guó)****保險(xiǎn)集團(tuán)公司投資建設(shè)，****技術(shù)集團(tuán)有限公司設(shè)計(jì)，上海***建設(shè)監(jiān)理有限公司監(jiān)理，****（集團(tuán)）有限公司組織施工；由***擔(dān)任項(xiàng)目經(jīng)理，***擔(dān)任執(zhí)行經(jīng)理，****擔(dān)任現(xiàn)場(chǎng)主管，****擔(dān)任技術(shù)負(fù)責(zé)人。一、編制依據(jù)《低壓配電設(shè)計(jì)規(guī)范》GB5005495中國(guó)建筑工業(yè)出版社《建筑工程施工現(xiàn)場(chǎng)供電安全規(guī)范》GB5019493中國(guó)建筑工業(yè)出版社《通用用電設(shè)備配電設(shè)計(jì)規(guī)范》GB5005593中國(guó)建筑工業(yè)出版社《供配電系統(tǒng)設(shè)計(jì)規(guī)范》GB5005295中國(guó)建筑工業(yè)出版社《施工現(xiàn)場(chǎng)臨時(shí)用電安全技術(shù)規(guī)范》JGJ462005中國(guó)建筑工業(yè)出版社《建筑施工安全檢查標(biāo)準(zhǔn)》JGJ5999二、施工條件施工現(xiàn)場(chǎng)用電量統(tǒng)計(jì)表:序號(hào) 機(jī)具名稱(chēng) 型號(hào) 安裝功率(kW) 數(shù)量 合計(jì)功率(kW)1 熒光燈 1 2 熒光燈