（超經(jīng)典）施工用電安全專(zhuān)項(xiàng)方案（含全套計(jì)算書(shū)）

1、 *名苑114#及管理用房 施工用電安全專(zhuān)項(xiàng)方案編制人: 職務(wù)(職稱(chēng)):項(xiàng)目電氣技術(shù)負(fù)責(zé)人 審核人: 職務(wù)(職稱(chēng)):質(zhì)安科長(zhǎng) 批準(zhǔn)人: 職務(wù)(職稱(chēng)):技術(shù)負(fù)責(zé)人 編制單位: *建設(shè)集團(tuán)有限公司 編制時(shí)間: 年 月 日 本施工方案為安全施工組織設(shè)計(jì)的補(bǔ)充部分，關(guān)于工程概況、人員安排、進(jìn)度計(jì)劃等此略。 本工程按照施工現(xiàn)場(chǎng)實(shí)際情況及用電安全考慮，施工用電采用三相五線(xiàn)制“tn-s”系統(tǒng)進(jìn)行配電，現(xiàn)場(chǎng)設(shè)三只總配電箱，八只動(dòng)力分配電箱及二只照明分配電箱，施工機(jī)具均單獨(dú)設(shè)置專(zhuān)用開(kāi)關(guān)箱，其中兩臺(tái)對(duì)焊機(jī)及兩臺(tái)塔吊單獨(dú)從1#及3#總箱內(nèi)引出，電纜線(xiàn)采用埋地設(shè)置（部分采用架空設(shè)置），各臨時(shí)用電安裝后須經(jīng)公司安全負(fù)責(zé)

2、人和編制方案的人員參加驗(yàn)收，驗(yàn)收合格后方可使用。設(shè)計(jì)步驟如下:一、現(xiàn)場(chǎng)情況 施工現(xiàn)場(chǎng)臨時(shí)用電平面布置圖，見(jiàn)(附圖)。二、負(fù)荷計(jì)算根據(jù)臨時(shí)電源的位置及用電設(shè)備分布和現(xiàn)場(chǎng)環(huán)境條件等確定總配電箱、分配電箱和開(kāi)關(guān)箱的位置。施工現(xiàn)場(chǎng)機(jī)械設(shè)備匯總表序號(hào)設(shè)備名稱(chēng)臺(tái)數(shù)單機(jī)功率kw小計(jì)功率kw規(guī)格型號(hào)備注1塔吊16060qtz63開(kāi)工進(jìn)場(chǎng)2塔吊16060qtz63開(kāi)工進(jìn)場(chǎng)3物料提升機(jī)117.575sse100開(kāi)工進(jìn)場(chǎng)4砼攪拌機(jī)65.533tz350開(kāi)工進(jìn)場(chǎng)5插入式振動(dòng)機(jī)401.560zn-50開(kāi)工進(jìn)場(chǎng)6平臺(tái)振動(dòng)機(jī)201.122zbp-50開(kāi)工進(jìn)場(chǎng)7木工圓鋸21.53.0hb-50開(kāi)工進(jìn)場(chǎng)8鋼筋切斷機(jī)23.57.

3、0gq-40開(kāi)工進(jìn)場(chǎng)9鋼筋彎曲機(jī)22.24.4g26-40開(kāi)工進(jìn)場(chǎng)10對(duì)焊機(jī)290180un1-100開(kāi)工進(jìn)場(chǎng)電焊機(jī)210.521bxtf-3開(kāi)工進(jìn)場(chǎng)生活照明6.0總負(fù)荷計(jì)算pe =(60+60+75+33+60+22+3+7+4.4+180+21+6) =531.4kw則： pj = 0.6 531.4= 318.8kw qj = pjtan = 318.8 1.17 kvar373kvar sj = pj2 + qj2 = 318.82 +3732 =490.6kva sj 490.6 ij = = a 745.6a ue3 0.383 三、1#配電系統(tǒng)計(jì)算1#總配電箱機(jī)械設(shè)備匯總表序號(hào)設(shè)

4、備名稱(chēng)臺(tái)數(shù)單機(jī)功率kw小計(jì)功率kw規(guī)格型號(hào)備注1塔吊16060qtz63開(kāi)工進(jìn)場(chǎng)2物料提升機(jī)67.545sse100開(kāi)工進(jìn)場(chǎng)3砼攪拌機(jī)35.516.5tz350開(kāi)工進(jìn)場(chǎng)4插入式振動(dòng)機(jī)201.530zn-50開(kāi)工進(jìn)場(chǎng)5平臺(tái)振動(dòng)機(jī)101.111zbp-50開(kāi)工進(jìn)場(chǎng)6木工圓鋸11.51.5hb-50開(kāi)工進(jìn)場(chǎng)7鋼筋切斷機(jī)13.53.5gq-40開(kāi)工進(jìn)場(chǎng)8鋼筋彎曲機(jī)12.22.2g26-40開(kāi)工進(jìn)場(chǎng)9對(duì)焊機(jī)19090un1-100開(kāi)工進(jìn)場(chǎng)10電焊機(jī)110.510.5bxtf-3開(kāi)工進(jìn)場(chǎng)生活照明6.0總負(fù)荷計(jì)算pe =(60+45+16.5+30+11+1.5+3.5+2.2+90+10.5+6)=276

5、.2kw則： pj = 0.6 276.2= 171kw qj = pjtan = 171 1.17 kvar200kvar sj = pj2 + qj2 = 1712 +2002 =263kva sj 263 ij = = a 399.8a ue3 0.383 1#總配電箱1-1分配電箱的計(jì)算負(fù)荷 pj1 = (3.5+2.2+1.5) =7.2kw(取cos=0.85,則tan = 0.62) qj1 = pj1tan = 7.2 0.62 kvar 4.5kvar sj1 = pj12 + qj12 = 7.22 +4.52 =8.5kva sj 8.5 ij1 = = a 12.9a

6、ue3 0.383 1#總配電箱1-2#分配電箱的計(jì)算負(fù)荷 pj2 = (7.5+7.5+5.5+7*1.5+4*1.1) = 35.4kw qj2 = pj2tan =35.4 0.62 kvar 22kvar sj2 = pj22 + qj22 = 35.42 +222 =41.7kva sj2 41.7 ij2 = = 63a ue3 0.383 1#總配電箱1-3#分配電箱的計(jì)算負(fù)荷 pj2 = (7.5+7.5+5.5+7*1.5+4*1.1) = 35.4kw qj2 = pj2tan =35.4 0.62 kvar 22kvar sj2 = pj22 + qj22 = 35.42

7、 +222 =41.7kva sj2 41.7 ij2 = = 63a ue3 0.3831#總配電箱1-4#分配電箱的計(jì)算負(fù)荷 pj2 = (7.5+7.5+5.5+6*1.5+3*1.1) = 32.8kw qj2 = pj2tan =32.8 0.62 kvar 20.36kvar sj2 = pj22 + qj22 = 32.82 +20.362 =38.6kva sj2 38.6 ij2 = = 58.6a ue3 0.3831#總配電箱對(duì)焊機(jī)的計(jì)算負(fù)荷 pj3 = 90kw qj3 = 900.62 kvar55.8kvar (取cos=0.85,tan=0.62) sj3 = 9

8、02 +55.82 105.9kva 105.9 ij3 = 160a ue3 1#總配電箱塔吊的計(jì)算負(fù)荷 pj3 = 60kw qj3 = 600.62 kvar37.2kvar (取cos=0.85,tan=0.62) sj3 = 602 +37.22 70.5kva 70.5 ij3 = 107a ue3 1#總配電箱照明分箱的計(jì)算負(fù)荷 pj(1) = 6.0kw qj(1) = 2.3 1.52 kvar 3.5kvar (取cos=0.5，tan=1.52) sj(1) = 6.02 +3.52 = 6.9kva 6.9 ij(1) = a 31.4a 0.22 2、導(dǎo)線(xiàn)及導(dǎo)線(xiàn)截面的

9、選擇（1#配電系統(tǒng)） 本施工現(xiàn)場(chǎng)場(chǎng)地不大，進(jìn)戶(hù)線(xiàn)和總電源箱至各分配電箱的導(dǎo)線(xiàn)采用橡皮絕緣電纜(yc)按規(guī)范要求進(jìn)行敷設(shè)。 選擇橡皮絕緣電纜的程序是，先按允許溫度初選截面，使jj小于電纜允許截流量，然后再效驗(yàn)電壓損失，使其小于電壓損失規(guī)定值為滿(mǎn)足要求。 芯線(xiàn)最高溫度為65，環(huán)境溫度為25。進(jìn)戶(hù)線(xiàn)由上可知，ij=399.8a查表可選yc 3 185m2 + 2 75m2 (i=388a)電纜1#總1-1段，l1= 59m =0.059km ij1 = 12.9a pj1 =7.2kw qj1 =4.5kvar 查表選 yc 3 25mm2 + 1 16mm2 (i=101a)電纜 電壓損失查表，電

10、纜的電阻r0=1.2/km，x0=0.295/km r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 =ua%+ ur%1.2 0.295 = 42.4 0.004 + 26.3 0.004 100.382 100.382 =0.83142.40.004+0.20426.30.004 = 0.140 + 0.021 = 0.16(%) (5%)滿(mǎn)足規(guī)定,1#總到第1-1分配電箱可選用yc 325m2+116m2的四蕊電纜。1#總-1-2段，l2 =63m =0.063km ij2 =63a pj2 =35.4kw qj2 =22kvar 查表選yc 325

11、m2+116m2 (i=101a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258 = 107.7 0.085 + 66.80.085 100.382 100.382 = 0.193+ 1.014 = 1.20(%) (5%)滿(mǎn)足規(guī)定,1#總到第1-2分配電箱可選用yc 325m2 + 116m2的四蕊電纜。1#總-1-3段，l2 =63m =0.063km ij2 =63a pj2 =35.4kw qj2 =22kvar 查表選yc

12、325m2+116m2 (i=101a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258 = 107.7 0.085 + 66.80.085 100.382 100.382 = 0.193+ 1.014 = 1.20(%) (5%)滿(mǎn)足規(guī)定,1#總到第1-3分配電箱可選用yc 325m2 + 116m2的四蕊電纜。1#總- 1-4段，l2 =120m =0.120km ij2 =58.6a pj2 =32.8kw qj2 =20.36k

13、var 查表選yc 325m2+216m2 (i=101a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258 = 107.7 0.085 + 66.80.085 100.382 100.382 = 0.193+ 1.014 = 1.20(%) (5%)滿(mǎn)足規(guī)定,1#總到第1-4分配電箱可選用yc 325m2 + 116m2的四蕊電纜。1#總對(duì)焊機(jī)配電箱l2 =56m =0.056km ij2 = 160a pj2 = 90kw qj2

14、=55.8kvar 查表選yc 395m2+125m2 (i=191a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258 = 107.7 0.085 + 66.80.085 100.382 100.382 = 0.193+ 1.014 = 1.20(%) (5%)滿(mǎn)足規(guī)定,總到對(duì)焊機(jī)開(kāi)關(guān)箱可選用yc 395m2 + 125m2的四蕊電纜。1#總塔吊配電箱l2 =5m =0.005km ij2 = 107a pj2 = 60kw qj2

15、=37.2kvar 查表選yc 350m2+125m2 (i=158a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258 = 107.7 0.085 + 66.80.085 100.382 100.382 = 0.193+ 1.014 = 1.20(%) 1.3ij1=1.312.9=16.8a 查表選用hr5-100a刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij1=1.312.9=16.8a 查表選用dz15l-40/390型

16、漏電保護(hù)器，額定電壓380v，額定漏電動(dòng)作電流75ma，額定漏電分?jǐn)鄷r(shí)間0.1s。(3) 隔離開(kāi)關(guān)的選擇 控制切斷機(jī)開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。控制彎曲機(jī)開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a?？刂颇竟ら_(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。第1-2分配電箱開(kāi)關(guān)電器的選擇(1) 開(kāi)關(guān)選擇： ih 1.3ij1=1.363=81.9a 查表選用rt-10/4刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij1=1.363=81.9a 查表選用dz25l-40/390型漏電保護(hù)器，額定電壓380v，額

17、定動(dòng)作電流75ma，額定漏電分?jǐn)鄷r(shí)間0.1s。(3) 隔離開(kāi)關(guān)的選擇 控制井架開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制攪拌機(jī)的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制其他開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。第1-3分配電箱開(kāi)關(guān)電器的選擇(1) 開(kāi)關(guān)選擇： ih 1.3ij1=1.363=81.9a 查表選用rt-10/4刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij1=1.363=81.9a 查表選用dz25l-40/390型漏電保護(hù)器，額定電壓380v，額定動(dòng)作電流75ma，額定漏電分?jǐn)鄷r(shí)間0.

18、1s。(3) 隔離開(kāi)關(guān)的選擇 控制井架開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制攪拌機(jī)的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制其他開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。第1-4分配電箱開(kāi)關(guān)電器的選擇(1) 開(kāi)關(guān)選擇： ih 1.3ij1=1.358.6=76a 查表選用rt-10/4刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij1=1.358.6=76a 查表選用dz25l-40/390型漏電保護(hù)器，額定電壓380v，額定動(dòng)作電流75ma，額定漏電分?jǐn)鄷r(shí)間0.1s。(3) 隔離開(kāi)關(guān)的選擇 控制井架開(kāi)

19、關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制攪拌機(jī)的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制其他開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。對(duì)焊機(jī)開(kāi)關(guān)箱開(kāi)關(guān)電器選擇 (1) 開(kāi)關(guān)選擇 ih 1.3ij2=1.3192.6=250.3a 查表選用hr5-200a刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij2=1.3192.6=250.3a 查表選用dz10l-63/490漏電保護(hù)器，過(guò)電流脫扣器額定電流100a，額定漏電動(dòng)作電流100ma，額定不動(dòng)作電流50ma，額定漏電分?jǐn)鄷r(shí)間0.1s。(3) 隔離開(kāi)關(guān)的選擇

20、 控制對(duì)焊機(jī)開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hr5-200a刀熔開(kāi)關(guān)，額定電流200a。塔吊開(kāi)關(guān)箱開(kāi)關(guān)電器選擇(1) 開(kāi)關(guān)選擇 ih 1.3ij2=1.3107=139a 查表選用hr5-200a刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij2=1.3107=139a 查表選用dz10l-63/490漏電保護(hù)器，過(guò)電流脫扣器額定電流100a，額定漏電動(dòng)作電流100ma，額定不動(dòng)作電流50ma，額定漏電分?jǐn)鄷r(shí)間0.1s。(3) 隔離開(kāi)關(guān)的選擇 控制對(duì)焊機(jī)開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hr5-200a刀熔開(kāi)關(guān)，額定電流照明分配電箱此略四、3#配電系統(tǒng)計(jì)算：3#總配電箱機(jī)械設(shè)備匯總表序號(hào)設(shè)備名稱(chēng)臺(tái)數(shù)單機(jī)功率kw小計(jì)

21、功率kw規(guī)格型號(hào)備注1塔吊16060qtz63開(kāi)工進(jìn)場(chǎng)2物料提升機(jī)57.537.5sse100開(kāi)工進(jìn)場(chǎng)3砼攪拌機(jī)35.516.5tz350開(kāi)工進(jìn)場(chǎng)4插入式振動(dòng)機(jī)201.530zn-50開(kāi)工進(jìn)場(chǎng)5平臺(tái)振動(dòng)機(jī)101.111zbp-50開(kāi)工進(jìn)場(chǎng)6木工圓鋸11.51.5hb-50開(kāi)工進(jìn)場(chǎng)7鋼筋切斷機(jī)13.53.5gq-40開(kāi)工進(jìn)場(chǎng)8鋼筋彎曲機(jī)12.22.2g26-40開(kāi)工進(jìn)場(chǎng)9對(duì)焊機(jī)19090un1-100開(kāi)工進(jìn)場(chǎng)10電焊機(jī)110.510.5bxtf-3開(kāi)工進(jìn)場(chǎng)總負(fù)荷計(jì)算pe =(60+37.5+16.5+30+11+1.5+3.5+2.2+90+10.5+6)=268.7kw則： pj = 0.6

22、268.7= 162kw qj = pjtan = 162 1.17 kvar188kvar sj = pj2 + qj2 = 1622 +1882 =248.6kva sj 248.6 ij = = a 377.8a ue3 0.383 3#總配電箱3-1分配電箱的計(jì)算負(fù)荷 pj1 = (3.5+2.2+1.5) =7.2kw(取cos=0.85,則tan = 0.62) qj1 = pj1tan = 7.2 0.62 kvar 4.5kvar sj1 = pj12 + qj12 = 7.22 +4.52 =8.5kva sj 8.5 ij1 = = a 12.9a ue3 0.383 3#

23、總配電箱3-2#分配電箱的計(jì)算負(fù)荷 pj2 = (7.5+7.5+5.5+7*1.5+4*1.1) = 35.4kw qj2 = pj2tan =35.4 0.62 kvar 22kvar sj2 = pj22 + qj22 = 35.42 +222 =41.7kva sj2 41.7 ij2 = = 63a ue3 0.383 3#總配電箱3-3#分配電箱的計(jì)算負(fù)荷 pj2 = (7.5+5.5+7*1.5+4*1.1) = 27.9kw qj2 = pj2tan =27.9 0.62 kvar 17.3kvar sj2 = pj22 + qj22 = 27.92 +17.32 =32.3k

24、va sj2 32.3 ij2 = = 49a ue3 0.3833#總配電箱3-4#分配電箱的計(jì)算負(fù)荷 pj2 = (7.5+7.5+5.5+6*1.5+3*1.1) = 32.8kw qj2 = pj2tan =32.8 0.62 kvar 20.36kvar sj2 = pj22 + qj22 = 32.82 +20.362 =38.6kva sj2 38.6 ij2 = = 58.6a ue3 0.3833#總配電箱對(duì)焊機(jī)的計(jì)算負(fù)荷 pj3 = 90kw qj3 = 900.62 kvar55.8kvar (取cos=0.85,tan=0.62) sj3 = 902 +55.82 10

25、5.9kva 105.9 ij3 = 160a ue3 3#總配電箱塔吊的計(jì)算負(fù)荷 pj3 = 60kw qj3 = 600.62 kvar37.2kvar (取cos=0.85,tan=0.62) sj3 = 602 +37.22 70.5kva 70.5 ij3 = 107a ue3 導(dǎo)線(xiàn)及導(dǎo)線(xiàn)截面的選擇（1#配電系統(tǒng)） 本施工現(xiàn)場(chǎng)場(chǎng)地不大，進(jìn)戶(hù)線(xiàn)和總電源箱至各分配電箱的導(dǎo)線(xiàn)采用橡皮絕緣電纜(yc)按規(guī)范要求進(jìn)行敷設(shè)。 選擇橡皮絕緣電纜的程序是，先按允許溫度初選截面，使jj小于電纜允許截流量，然后再效驗(yàn)電壓損失，使其小于電壓損失規(guī)定值為滿(mǎn)足要求。 芯線(xiàn)最高溫度為65，環(huán)境溫度為25。進(jìn)戶(hù)線(xiàn)

26、由上可知，ij=377.8a查表可選yc 3 185m2 + 2 75m2 (i=388a)電纜3#總3-1段，l1=70m =0.070km ij1 = 12.9a pj1 =7.2kw qj1 =4.5kvar 查表選 yc 3 25mm2 + 1 16mm2 (i=101a)電纜 電壓損失查表，電纜的電阻r0=1.2/km，x0=0.295/km r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 =ua%+ ur%1.2 0.295 = 42.4 0.004 + 26.3 0.004 100.382 100.382 =0.83142.40.004+0

27、.20426.30.004 = 0.140 + 0.021 = 0.16(%) (5%)滿(mǎn)足規(guī)定,3#總到第3-1分配電箱可選用yc 325m2+116m2的四蕊電纜。3#總- 3-2段，l2 =40m =0.040km ij2 =63a pj2 =35.4kw qj2 =22kvar 查表選yc 325m2+116m2 (i=101a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258 = 107.7 0.085 + 66.80.085

28、 100.382 100.382 = 0.193+ 1.014 = 1.20(%) (5%)滿(mǎn)足規(guī)定,3#總到第3-2分配電箱可選用yc 325m2 + 116m2的四蕊電纜。3#總- 3-3段，l2 =85m =0.085km ij2 =49a pj2 =27.9kw qj2 =17.3kvar 查表選yc 325m2+116m2 (i=101a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258 = 107.7 0.085 + 66.

29、80.085 100.382 100.382 = 0.193+ 1.014 = 1.20(%) (5%)滿(mǎn)足規(guī)定,3#總到第3-3分配電箱可選用yc 325m2 + 116m2的四蕊電纜。3#總- 3-4段，l2 =120m =0.120km ij2 =58.6a pj2 =32.8kw qj2 =20.36kvar 查表選yc 325m2+216m2 (i=101a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258 = 107.7 0

30、.085 + 66.80.085 100.382 100.382 = 0.193+ 1.014 = 1.20(%) (5%)滿(mǎn)足規(guī)定,3#總到第3-4分配電箱可選用yc 325m2 + 116m2的四蕊電纜。3#總對(duì)焊機(jī)配電箱l2 =10m =0.010km ij2 = 160a pj2 = 90kw qj2 =55.8kvar 查表選yc 395m2+125m2 (i=191a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258 = 1

31、07.7 0.085 + 66.80.085 100.382 100.382 = 0.193+ 1.014 = 1.20(%) (5%)滿(mǎn)足規(guī)定,3#總到對(duì)焊機(jī)開(kāi)關(guān)箱可選用yc 395m2 + 125m2的四蕊電纜。3#總塔吊配電箱l2 =20m =0.020km ij2 = 107a pj2 = 60kw qj2 =37.2kvar 查表選yc 350m2+125m2 (i=158a)電纜 電壓損失查表，電纜的電阻ro=0.28/kw，電抗xo=0.258/kw r0 n x 0 n u% = pala + qala 10ue2 1 10ue2 1 = ua%+ ur%0.28 0.258

32、= 107.7 0.085 + 66.80.085 100.382 100.382 = 0.193+ 1.014 = 1.20(%) 1.3ij1=1.312.9=16.8a 查表選用hr5-100a刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij1=1.312.9=16.8a 查表選用dz15l-40/390型漏電保護(hù)器，額定電壓380v，額定漏電動(dòng)作電流75ma，額定漏電分?jǐn)鄷r(shí)間0.1s。(3) 隔離開(kāi)關(guān)的選擇 控制切斷機(jī)開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a?？刂茝澢鷻C(jī)開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a?？刂颇竟ら_(kāi)關(guān)箱的隔離

33、開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。第3-2分配電箱開(kāi)關(guān)電器的選擇(1) 開(kāi)關(guān)選擇： ih 1.3ij1=1.363=81.9a 查表選用rt-10/4刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij1=1.363=81.9a 查表選用dz25l-40/390型漏電保護(hù)器，額定電壓380v，額定動(dòng)作電流75ma，額定漏電分?jǐn)鄷r(shí)間0.1s。(3) 隔離開(kāi)關(guān)的選擇 控制井架開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制攪拌機(jī)的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制其他開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，

34、額定電流63a。第3-3分配電箱開(kāi)關(guān)電器的選擇(1) 開(kāi)關(guān)選擇： ih 1.3ij1=1.349=63.7a 查表選用rt-10/4刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij1=1.349=63.7a 查表選用dz25l-40/390型漏電保護(hù)器，額定電壓380v，額定動(dòng)作電流75ma，額定漏電分?jǐn)鄷r(shí)間0.1s。(3) 隔離開(kāi)關(guān)的選擇 控制井架開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制攪拌機(jī)的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。 控制其他開(kāi)關(guān)箱的隔離開(kāi)關(guān)選用hg1-63/3熔斷式隔離開(kāi)關(guān)，額定電流63a。第3-4分配電箱開(kāi)關(guān)電器的選擇(1) 開(kāi)關(guān)選擇： ih 1.3ij1=1.358.6=76a 查表選用rt-10/4刀熔開(kāi)關(guān)。(2) 漏電保護(hù)器的選擇 ih 1.3ij1=1.358.6=76a 查表選用dz25l-40/390型漏電保