鋼芯鋁絞線長(zhǎng)期允許的載流量

1、鋼芯鋁絞線長(zhǎng)期允許的截流量標(biāo)稱(chēng)截面積（mm 2）計(jì)算載流量（A)標(biāo)稱(chēng)截面積計(jì)算載流量（A）+ 70C+ 80C+ 90C(mm )+ 70C+ 80C+ 90C10/266788750/816119121816/38510011350/3016619521825/411113114935/613415818070/1019423226695/1525230635170/4019623025795/2023327731995/55230270301120/7287350401150/8323395454120/20285348399150/20326400461120/2526531536515

2、0/25331407469120/70258301335150/35331407469185/10372458528210/10397490565185/25379468540210/25405501579185/30373460531210/35409507586185/45379469541210/50409507586240/30445552639240/40440546633240/55445554641300/15495615711400/20595746864300/20502624722400/25584730845300/25505628726400/3558372984430

3、0/40503628728400/50592741857300/50504629730400/65597752876300/70512641745400/95608767895500/35670842977630/457639641120500/45664834967630/557759791136500/65676850983630/807749771131800/55887112613101400/100127215631808800/7088411211301800/10087811131288注1:最高允許溫度分+70C、+80C、+90C三種。注2:環(huán)境溫度+40C,日照 1000W

4、/m,風(fēng)速0.5m/s輻射散熱系數(shù)與吸熱系數(shù)為0.9條件計(jì)算的裸導(dǎo)體載流量在不同海拔高度及環(huán)境溫度下的綜合校正系數(shù)導(dǎo)體最 高允許 溫度 (C)適夙范圍實(shí)際環(huán)境溫度(C)海拔局度(m)+ 20+ 25+ 30+ 35+ 40+ 45+ 50+ 70屋內(nèi)矩形、槽形、 管形導(dǎo)體和不計(jì)日 照的屋外軟導(dǎo)線1.051.000.940.880.810.740.67+ 80計(jì)及日照時(shí)屋外軟導(dǎo)線1000及以下1.051.000.950.890.830.760.6920001.010.960.910.850.7930000.970.920.870.810.7540000.930.890.840.770.71計(jì)及日

5、照時(shí)屋外管 形導(dǎo)體1000及以下1.051.000.940.870.800.720.6320001.000.940.880.810.7430000.950.900.840.760.6940000.910.860.800.720.65導(dǎo)線經(jīng)濟(jì)電流密度表單位:A/mm 2導(dǎo)線材料最大負(fù)荷年利用小時(shí)3000以下300050005000以上鋁線1.11.21.01.10.91.0銅線2.42.52.32.42.22.3用經(jīng)濟(jì)電流密度選擇導(dǎo)線截面的公式是:式中S 導(dǎo)線截面mmP 送電負(fù)荷kWU h線路額定電壓kV cos?功率因數(shù)j 經(jīng)濟(jì)電流密度 A/ mrm1 .型號(hào)及規(guī)格標(biāo)稱(chēng)截面mm2結(jié)構(gòu)根數(shù)值徑n

6、/mm計(jì)算截面（mm2 ）外徑mm直流電阻 不大于D.C.歐/ km）計(jì)算拉斷力KNkg/km交貨長(zhǎng)度不小于m鋁鋼鋁鋼總計(jì)10/26/1.501/1.5010.61.7712.374.502.7064.1242.9300016/36/1.851/1.8516.32.6918.825.551.7796.1365.2300025/46/2.321/2.3225.364.2329.596.961.1319.29102.6300035/66/2.721/2.7234.865.8140.678.160.823012.63141.0300050/86/3.201/3.2048.258.0456.299.6

7、00.594616.87195.1200050/3012/2.327/2.3250.7329.5980.3211.600.569242.62372.0300070/106/3.801/3.8068.0511.3479.3911.400.421723.39275.2200070/4012/2.727/2.7269.7340.67110.4013.600.414158.30511.3200095/1526/2.157/1.6794.3915.33109.7213.610.305835.00380.8200095/207/4.167/1.8595.1418.82113.9613.870.301937

8、.20408.9200095/5512/3.207/3.2096.5156.30152.8116.000.299278.11707.72000120/718/2.901/2.90118.896.61125.5014.500.242227.57379.02000120/2026/2.387/1.85115.6718.82134.4915.070.249641.00466.82000120/257/4.727/2.10122.4824.25146.7315.740.234547.88526.62000120/7012/3.607/3.60122.1571.25193.4018.000.236498

9、.37895.62000150/818/3.201/3.20144.768.04152.8016.000.198932.86461.42000150/2024/2.787/1.85145.6818.82164.5016.670.198046.63549.42000150/2526/2.701/2.10148.8624.25173.1117.100.193954.11601.02000150/3530/2.507/2.50147.2634.36181.6217.500.196265.02676.22000185/1018/3.601/3.60183.2210.18193.4018.000.157

10、240.88584.02000185/2524/3.157/2.10187.0424.25211.2918.900.154259.42706.12000185/3026/2.987/2.32181.3429.59210.9318.880.159264.32732.62000185/4530/2.807/2.80184.7343.10227.8319.600.156480.19848.22000210/1018/3.801/3.80204.1411.34215.4819.000.141145.14650.72000210/2524/3.337/2.22209.0227.10236.1219.98

11、0.138065.99789.12000210/3526/3.227/2.50211.7334.36246.0920.380.136374.25853.92000210/5030/2.987/2.98209.2448.82258.0620.860.138190.83960.82000240/3024/3.607/2.40244.2931.67275.9621.600.118175.62922.22000240/4036/3.427/2.66238.8538.90277.7521.660.120983.37964.32000240/5530/3.207/3.20241.2756.30297.57

12、22.400.1198102.1011082000300/1542/3.007/1.67296.8815.33312.2123.010.0972468.06939.82000300/2045/2.937/1.95303.4220.91324.3323.430.0952075.6810022000300/2548/2.857/2.22306.2127.10333.3123.760.0943383.4110582000300/4024/3.997/2.66300.0938.90338.9923.940.0961492.2211332000300/5026/3.837/2.98299.5448.82

13、348.3624.260.09636103.4012012000300/7030/3.607/3.60305.3671.25376.6125.200.09463128.0014022000400/2042/3.517/1.95406.4020.91427.3126.910.0710488.8512861500400/2545/3.337/2.22391.9127.10419.0126.640.0737095.9412951500400/3548/3.227/2.50390.8834.36425.2426.820.07389103.9013491500400/5054/3.077/3.07399

14、.7351.82451.5527.630.07232123.4015111500400/6526/4.427/3.44398.9465.06464.0028.000.07236135.2016111500400/9530/4.1619/2.50407.7593.27501.0229.140.07087171.3018601500500/3545/3.757/2.50497.0134.36531.3730.000.05812119.5016421500500/4548/3.607/2.80488.5843.10531.6830.000.05912128.1016881500500/6554/3.

15、447/3.44501.8865.06566.9430.960.05760154.0018971500630/4545/4.207/2.80623.4543.10666.5533.600.04633148.7020601200630/5548/4.127/3.20639.9256.30696.2234.320.04514164.4022091200630/8054/3.8719/2.32635.1980.32715.5134.820.04551192.9023881200800/5545/4.807/3.20814.3056.30870.6038.400.03547191.5026901000

16、800/7048/4.637/3.60808.1571.25879.4038.580.03574207.0027911000800/10054/4.3319/2.60795.17100.88896.0538.980.03635241.10299110002 .鋼芯鋁絞線的物理參數(shù)及載流量標(biāo)稱(chēng)截面積/mm2（鋁/鋼）10/2彈性模量/GPa線脹系數(shù)/10-6C-1計(jì)算載流量/A70 c80 C90 C79.019.066788716/379.019479.019.111113114935/679.019.113415818050/879.019.116119121850

17、/30105.015.316619521870/1079.019.119423226670/40105.015.319623025795/1576.018.925230635195/2076.018.523327731995/55105.015.3230270301120/766.021.2287350401120/2076.018.9285348399120/2576.018.5265315365120/70105.015.3258301335150/866.021.2323395454150/2073.019.6326400461150/2576.018.9331407469150/358

18、0.017.8331407469185/1066.021.2372458528185/2573.019.6379468540185/3076.018.9373460531185/4580.017.8379469541210/1066.021.2397490565210/2573.019.6405501579210/3576.018.9409507586210/5080.017.8409507586240/3073.019.6445552639240/4076.018.9440546633240/5580.017.8445554641300/1561.021.4495615711300/2063.020.9502624722300/2565.020.5505628726300/4073.019.6503628728300/5076.018.9504629730300/7080.017.8512641745400/2061.021.4595746864400/2563.020.9584730845400/3565.020.558