【正文】 序號 機具名稱 型號 安裝功率(kW) 數(shù)量 合計功率(kW)1 蛙式夯土機 HW32 1 2 插入式振動器 ZX50 1 3 插入式振動器 ZX50 1 4 平板式振動器 ZB11 1 5 木工圓鋸 MJ104 3 1 3 6 木工圓鋸 MJ104 3 1 3 7 交流電焊機 BX31201 9 1 9 8 真空吸水泵 HZX40 4 1 4 9 塔式起重機 QT50 40 1 40 10 攪拌機 JD350 15 1 15 11 鋼筋調(diào)直機 GT4/14 4 1 4 12 鋼筋切斷機 QJ40 7 1 7 13 鋼筋彎曲機 GW40 3 1 3 14 交流電焊機 BX32002 1 15 辦公區(qū)用電 20 1 20 16 生活區(qū)用電 20 1 20 合計用電 四、施工用電計算確定用電負荷:(1)、蛙式夯土機Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(2)、插入式振動器Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(3)、插入式振動器Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(4)、平板式振動器Kx = Cosφ = tgφ = Pjs = = kWQjs = Pjs tgφ= = kvar(5)、木工圓鋸Kx = Cosφ = tgφ = Pjs = 3 = kWQjs = Pjs tgφ= = kvar(6)、木工圓鋸Kx = Cosφ = tgφ = Pjs = 3 = kWQjs = Pjs tgφ= = kvar(7)、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 = 9=Pe = n(Jc/Jc1)1/2Pn = 1()1/2 = kWPjs = KxPe = = Qjs = Pjs tgφ= = kvar(8)、真空吸水泵Kx = Cosφ = tgφ = Pjs = 4 = 3 kWQjs = Pjs tgφ=3 = kvar(9)、塔式起重機Kx = Cosφ = tgφ = 將Jc =40%統(tǒng)一換算到Jc1 =25%的額定容量Pn = 40kWPe = n(Jc/Jc1)1/2Pn = 1()1/240 = kWPjs = KxPe = = Qjs = Pjs tgφ= = kvar (10)、自落式混凝土攪拌機Kx = Cosφ = tgφ = Pjs = 15 = kWQjs = Pjs tgφ= = kvar (11)、鋼筋調(diào)直機Kx = Cosφ = tgφ = Pjs = 4 = kWQjs = Pjs tgφ= = kvar(12)、鋼筋切斷機Kx = Cosφ = tgφ = Pjs = 7 = kWQjs = Pjs tgφ= = kvar(13)、鋼筋彎曲機Kx = Cosφ = tgφ = Pjs = 3 = kWQjs = Pjs tgφ= = kvar(14)、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 = 9=Pe = n(Jc/Jc1)1/2Pn = 1()1/2 = kWPjs = KxPe = = Qjs = Pjs tgφ= = kvar(15)、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 (16)、辦公區(qū)用電Kx = Cosφ = tgφ = Pjs = 20 = 18 kWQjs = Pjs tgφ=18 = kvar(17)、生活區(qū)用電Kx = Cosφ = tgφ = Pjs = 20 = 18 kWQjs = Pjs tgφ=18 = kvar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=(+++++++3++++++++18+18) = 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) = () = A 1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。（3）本施工現(xiàn)場電源在北面，臨時用電從此處引出，總配電箱設(shè)置在靠近工地辦公室電源的配電房內(nèi)。電工對本工程用電負直接責(zé)任，參加每次的安全用電驗收和例查，做好日常電工巡查工作并做好記錄，嚴格按照操作規(guī)程及有關(guān)交底內(nèi)容操作，有權(quán)制止安全用電違章作業(yè)，發(fā)現(xiàn)用電隱患及違章操作及時處理并上報。該樓共6層，其中地下一層為雜物間，總高（檐高），半地下室結(jié)構(gòu)標(biāo)高3m，二～。一、工程概況該工程為 公寓樓2樓項目，由 建筑設(shè)計有限公司設(shè)計。該樓平面基本呈矩形，基礎(chǔ)為沖孔灌注樁基礎(chǔ)和柱下獨立基礎(chǔ)，主體為底部框架剪力墻結(jié)構(gòu)，上部為磚混結(jié)構(gòu)。安全員對本工程的臨時用電安全負直接領(lǐng)導(dǎo)責(zé)任，參加每次的安全用電驗收，組織每周的安全用電檢查工作并做好記錄，督促檢查電工巡檢工作，發(fā)現(xiàn)問題及時處理或上報，對存在用電安全隱患及違章作業(yè)不宜施工是有權(quán)暫停施工。（2）本工程臨時施工用電按照規(guī)范要求采用TN—S系統(tǒng)，三相四線，三級配電二級保護供電方式。（4）按照《JGJ462005》規(guī)定制定施工組織設(shè)計，接地電阻R≤4Ω。iii)選擇電氣設(shè)備選擇開關(guān)箱內(nèi)隔離開關(guān)為HR615/310，漏電保護器為 DZ15L100/30。(3)、插入式振動器開關(guān)箱至插入式振動器導(dǎo)線截面及開關(guān)箱內(nèi)電氣設(shè)備選擇（開關(guān)箱以下用電器啟動后需要系數(shù)取1）i)計算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 1() = ii)選擇導(dǎo)線選擇XV410 ，空氣明敷/架空線路時其安全載流量為57A。室外架空銅芯導(dǎo)線按機械強度的最小截面為10mm2，滿足要求。iii)選擇電氣設(shè)備選擇開關(guān)箱內(nèi)隔離開關(guān)為HR615/310，漏電保護器為 DZ15L100/30。(7)、交流電焊機開關(guān)箱至交流電焊機導(dǎo)線截面及開關(guān)箱內(nèi)電氣設(shè)備選擇（開關(guān)箱以下用電器啟動后需要系數(shù)取1）i)計算電流Kx = 1 Cosφ = tgφ = Ijs = Kx Pe /(Ue Cosφ) = 1() = ii)選擇導(dǎo)線選擇XV410 ，空氣明敷/架空線路時其安全載流量為57A