常用电力电缆载流量表

常用电力电缆载流量表VV29-铜芯聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆标称面积mm2线芯结构no/mm绝缘厚度mm护套厚度mm计算外径mm环境25℃时载流量(A)空气敷设环境25℃时载流量(A)埋土敷设成品近似重量kg/km备注铜芯铝芯铜芯铝芯铜芯铝芯1*107*1.351.01.613.480.661.5103.979.03462851*167*1.701.01.614.5106.081.5126.7104.94363361*257*16.3143.1110.2181.3138.75694141*357*2.521.21.617.7173.8133.6220.5169.66964801*5019*1.781.41.819.8217.3167.5270.3208.89186051*7019*19.8268.2206.7331.8255.512727831*9519*2.521.62.022.0329.7253.4394.3304.2162210361*12037*2.031.62.026.2377.4292.6454.7350.7190211621*15037*28.4434.6335.0518.3398.6227413551*18537*2.522.02.230.9494.0380.5580.9447.3272915821*24061*33.6584.0449.4676.3521.5333918531*30061*2.522.42.637.0669.9515.2760.0584.1404520732*42*1*15.438.228.647.737.13853352*62*1*2.761.01.617.247.737.159.445.64804032*102*7*1.351.01.820.563.848.877.459.46615382*162*7*1.71.01.823.585.765.7106.080.69987972*252*7*27.2112.485.7138.7106.0133010192*352*7*2.5135.7104.9166.4128.3163111922*502*18*27.3169.6130.4202.5155.61775.01166.02*702*18*30.3208.8161.1247.0190.82272.01419.02*952*24*33.7254.4196.1294.7226.82878.01718.02*1202*24*2.551.62.636.7294.7227.9339.2261.83477.02012.02*1502*45*2.071.82.639.7338.1260.7382.7293.64175.02346.03*43*1*16.032.924.441.331.8444.0370.03*63*1*2.761.01.618.041.331.851.940.3564.0454.03*103*7*1.351.01.870.054.1937.0753.03*163*7*1.71.02.025.075.357.292.271.01229.0128.03*253*7*28.6101.877.4121.993.31643.01176.03*353*7*2.5120.893.3147.3113.42251.01599.03*503*18*31.2152.6117.7182.3141.02432.01619.03*703*18*35.0189.7146.3236.4171.73153.01872.03*953*24*38.8230.0177.0261.8201.44027.02287.03*1203*24*2.551.62.641.5267.1205.6299.9231.14819.02622.03*1503*45*2.071.83.046.5309.5238.5343.4262.95932.03188.03*1803*45*2.302.03.050.5353.0272.0382.7295.77110.03725.03*2403*45*2.622.23.456.2415.5323.3446.3343.48965.04573.03*4+1*2.53*1*2.25+1*1*1.750.81.616.831.824.439.230.7492.0403.03*6+1*43*1*2.76+1*1*2.251.01.819.341.331.850.939.2644.0515.03*10+1*63*7*1.35+1*1*2.761.01.823.055.142.467.853.01027.0807.03*16+1*63*7*1.7+1*1*2.761.02.025.774.257.290.168.91315.0978.03*25+1*103*7*2.14+1*7*1.399.677.4121.990.11800.01272.03*35+1*103*7*2.52+1*7*1.3126.197.5151.6116.62174.01461.03*50+1*163*10*1.9+1*7*1.701.42.634.7157.9121.9185.5143.12763.01748.03*70+1*253*10*2.25+1*7*38.0195.0149.5233.7171.73498.02062.03*95+1*353*24*2.25+1*7*2.521.62.643.0239.6184.4269.2207.84564.02607.03*120+1*353*24*2.55+1*7*2.521.63.046.0275.6213.1374.0236.45412.02998.03*150+1*503*45*2.07+1*19*1.781.83.050.0319.1244.9346.7267.16606.03548.03*182+1*503*45*2.30+1*19*1.782.03.053.9365.7282.0391.1301.07781.04082.0三相功率的计算公式是：P=1.732IUcosφ。由三相功率公式可推出线电流公式：I=P/1.732Ucosφ

式中：

P为负载功率

U为线电压，一般是380V

cosφ是负载功率因数，一般取0.75，现在新型电机也有达到0.8或者0.9的。

计算线电流

：

I=P/1.732Ucosφ

按50kW计算：

I=50kW/(1.732*380*0.75)

=50kW/493.62

=101.3

A

选电缆要根据敷设电缆条件选，不同厂家的相同截面相同导体的载流量是差不多的。

参照某厂家的电力电缆载流量表可选铜芯25平方三芯或者四芯电缆即可。

最小弯曲半径：非铠装电缆：阻燃型为电缆外径的6倍，铠装型电缆：为电缆外径的20倍。M-煤矿使用YJ-交联聚乙烯绝缘V-PVC护套第一个“2”是镀锌钢带铠装第二个“2”是PVC外护套MYJV煤矿用交联聚乙烯绝缘聚氯乙烯护套电力电缆MYJV22煤矿用交联聚乙烯绝缘钢带铠装聚氯乙烯护套电力电缆MYJV32煤矿用交联聚乙烯绝缘细钢丝铠装聚氯乙烯护套电力电缆MYJV42煤矿用交联聚乙烯绝缘粗钢丝铠装聚氯乙烯护套电力电缆100kw的电动机用多粗的铜线默认分类2008-07-1320:53:00阅读207评论1字号：大中小订阅额定功率：Pe=100kW功率因数：COS&=0.75开关系数：Kx＝1额定功率：Pe=100kW功率因数：COS&=0.75开关系数：Kx＝1100kw的电动机用多粗的铜线据cosφ＝0.75得tgφ＝0.88有功功率计算：Pjs＝Pe×kx＝100kW×1＝100kW无功功率计算：Qjs＝Pjs×tgφ＝100kW×0.88＝88kVar计算负荷：Sjs＝√Pjs²+Qjs²=√100²+88²＝133.2kVA(此处为Pj²+Qj²的和开平方)计算电流：Ijs＝133.2kVA×1000/380V/1.73＝202.6A计算电流后，直接查有关电线电缆的安全载流量选择相应的电线电缆。如果用BV线明敷设，选用70平方；要是穿钢管则需选用95平方（环境温度35摄氏度时）。据cosφ＝0.75得tgφ＝0.88有功功率计算：Pjs＝Pe×kx＝100kW×1＝100kW无功功率计算：Qjs＝Pjs×tgφ＝100kW×0.88＝88kVar计算负荷：Sjs＝√Pjs²+Qjs²=√100²+88²＝133.2kVA(此处为Pj²+Qj²的和开平方)计算电流：Ijs＝133.2kVA×1000/380V/1.73＝202.6A计算电流后，直接查有关电线电缆的安全载流量选择相应的电线电缆。如果用BV线明敷设，选用70平方；要是穿钢管则需选用95平方（环境温度35摄氏度时）。6kV~35kV交联聚乙烯绝缘电力电缆XLPEInsulatedPowerCable交联聚乙烯绝缘电力电缆是采用化学