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1、1. 表8-24 BVVB型、BLVVB型、RVVB型电线载流量型号截面/mm2 参考外径/mm20时最大单位长度直流电阻/(欧/km)70时最小单位长度绝缘电阻/M欧km)25C空气敷设载流量/A成品参考质量/(kg/km)BVVB型铜芯2x0.754.6x7.024.50.01213422x1.04.8x7.418.10.01116492x1.55.4x8.412.10.01120652x2.56.2x9.87.410.01027972x4.06.8x11.04.610.0085381302x4.07.2x11.54.610.0080381402x6.07.4x12.03.080.0070
2、501792x6.08.0x13.03.080.0065501922x109.6x16.01.830.0065693063x0.754.6x9.424.50.0129.5603x1.04.8x9.818.10.01111703x1.55.4x11.512.10.01113953x2.56.2x13.57.410.0010211423x4.07.0x15.04.610.0085271983x4.07.4x16.24.610.0080272133x6.07.4x17.03.080.0070342653x6.08.0x183.080.0065342843x109.6x22.51.830.006555
3、457BLVVB型铝芯2x2.56.2x9.811.80.01021662x4.06.8x11.07.390.008527822x6.07.4x12.04.910.0070351052x109.6x16.03.080.0065541793x2.56.2x13.511.80.001017952x4.07.0x157.390.0085231243x6.07.4x174.910.0070271543x107.6x22.53.080.006542265RVVB型铜芯2x0.53.8x6.039.00.01210282x0.753.9x6.426.00.01013352x0.755.0x7.626.00
4、.01113442. 0.6、1KV聚氯乙烯绝缘电力电缆的载流量铠装VV22、VLV22型电力电缆载流量载流量计算条件1. 线芯长期工作温度:70。；2. 环境温度： 25 ；3. 埋地深度： 1000mm；4. 土壤热阻系数:1.0m.C/W；5. 线芯轴间距离:S=2D型号及芯数标称截面积/mm2参考外径/ mm载流量推荐值/ A成品参考质量/(KG/Km)空气中敷设埋地敷设铜芯铝芯铜芯铝芯铜芯铝芯VV22、VLV22单芯101376599775314250161410178127993892872515.71321031661295273663516.916112520215664842
5、65018.71911482401868135117020.524218730223210506129522.7298231361280137176512024.4347270415323163887315026.43953065083621959101918528.74593565304122395121524031.95544296234833333178330036.26374937085484091214540039.7750582814632497225735008436558626706309787651001776VV22、VLV22双芯2x4.016.3342741333883
6、382x6.017.3433453424543792x1020.0584570545894592x1622.0776092717485432x2525.5104811229510297042x3527.812910014911612768252x5026.514611317113314878712x7030.3188144214165217813152x9534.2237184267207280016262x12036.5274213306238336518692x15040.0316245346268405922092x18543.836828639430649842610VV22、VLV2
7、2 3芯3x4.017.0292336284503753x6.018.1372945365384253x1020.8503860467455513x1623.1665179619836753x2526.990701058213448573x3529.31118612799170210253x5031.2129100148115234414243x7034.4165127185142301717253x9538.6206160221176391321583x12041.7242188261203474125073x15045.4281218296229579030233x18551.032825
8、4337261701336143x24057.3386299389302893044983x30061.54453444413421135054473x40081.051940350439115825VV22、VLV22 4芯4x4.018.2302437295294294x6.019.3383046376414914x1022.5534164499056444x1625.07155836512188044x2529.2947310884169010344x3533.511791132102247915684x5034.3140109157122296317334x7037.817813719
9、6151383121074x9543.1219170234187503226894x12046.3255198268208610531194x15051.0294227301233747537814x18556.2333258338262909745344x24061.3397308393305116644x30069.3464359448347150184x40090.154842551540020202VV22、VLV22 3+1芯3x4+1x2.517.6302437294954053x6+1x419.1383046376084713x10+1x621.8524064498346033x
10、16+1x1025.57055846511437703x25+1x1628.2937210884160710173x35+1x1630.511388130101206011973x50+1x2537.0142110158123279517113x70+1x3540.7181139198152358120613x95+1x5045.0222172236183467626113x120+1x7049.7258201269209575130663x150+1x7052.0297230303235678835713x185+1x9559.5338262340264837143503x240+1x12069.54043133963071052353053x300+1x15070.04723654503491357267673x400+1x18584.254442251439918398型号及芯数标称截面积/mm2参考外径/ mm载流量推荐值/ A (环境温度25C)成品参考质量/(KG/Km)空气中敷设埋地敷设VV22 5芯5x419.431386065x620.739477395x1024.2556510725x1627.0728514505x2531.99610821435x3536.411913130985x5041.614515639925x70
