常用导线允许载流量

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1、常用导线允许载流量1、单条圆形导线的载流量（按环竟温度+25C、最高允许温度+70C）铜线铝线钢芯铝交线导线型号mm2载流量A导线型号mm2载流量A导线型号mm2屋外载流量A屋外屋内屋外屋内T45025L107555LG-16150T67035L1610585LG-25135T109560L25135110LG-35170T16130100L35170135LG-50220T25180140L50215170LG-70275T35220175L70265215LG-95335T50270220L95325260LG-120380T60315250L120375310LG-150445T7034

2、0280L150440370LG-185515T95415340L185500425LG-240610T120485405L240610LG-300700T150570480L300680LG-400800T185645550L400830LGQ-330740T240770650L500980LGQ-480925T300890L6251140T40010852、单条矩形母线载流量A（按环竟温度+25E、最高允许温度+70C）导线截面mm2铝母线铜母线导线截面mm2钢母线平放竖放平放竖放平放竖放15X315616520021020X3626520X320421526127525X3768025X

3、325226532334030X3909530X434736545147540X311912540X445648059362550X314715540X551854066570060X317618550X563266581686070X320421550X670374090695580X323324560X68268701069112590X325327560X8975102512511320100X328130560X10110011551395147520X4677080X6105011501360148025X4818580X8121513201553169030X49510080X10

4、136014801747190040X4124130100X6131014251665181050X4157165100X8149516251911208060X4185195100X10167518202121231070X4207225120X8175019002210240080X4240260120X10190520702435265090X4267290100X42953200e70-25式中：0实际环境温度C0e额定环境温度C注：当环境温度不是+25C时、表中允许载流量需要乘以温度校正系数KQ3、多条矩形母线载流量A(按环竟温度+25C、最高允许温度+70C)导线截面(mr)i2铝

5、母线铜母线菱形母线平放竖放平放竖放单母线铝母线铜母线2(60X6)128213501650174080X8455057502(60X8)159616802050216080X10510064002(60X10)1910201024302560100X8555070002(80X6)1500163019402100100X62007700102(80X8)1876204024102620120X73009050102(80X10)22372410285031002(100X6)17801935227024702(100X8)22002390281030602(100X10)26302860332

6、036102(120X8)24402650313034002(120X10)29453200377041003(60X6)15821720206022403(60X8)20052180256527903(60X10)25202650313533003(80X6)19302100250027203(80X8)24102620310033703(80X10)28703120367039903(100X6)23002500292031703(100X8)28003050361039303(100X10)33503640428046503(120X8)31103380399543403(120X10)

7、37704100478052004(100X10)38204150487553004(120X10)4275465054305900附录电缆长期允许载流量表1铝芯纸绝缘、聚氯乙烯绝缘、交联聚乙烯绝缘电缆直埋地下时长期允许载流量（25oC,土壤热阻系数为80oCm/VV1一导体截面积诚A量KVnKV6oKV匚一芯芯一三芯四纸绝缘聚氯乙烯绝缘纸绝缘聚氯乙烯绝缘纸绝缘聚氯乙烯绝缘纸绝缘纸绝缘聚氯乙烯绝缘交联聚乙烯绝缘纸绝缘交联聚乙烯绝缘4372276423333O6615656666O5665546o768676O866O856o8o7669956o952205OX880X580998oXo9053

8、3325O31OO36o3o02X53T0o36O548766366553X53Xo3o52O780OO92O925o9X53254X5oo55829924O4X32OO932q2cc5o2585T22O2257674256852o5;232P9o625X25423O57637038400250(0762325925425532O4379O4-842o4/J*53.o7225435752O42OO44400oo4543335952758表2铝芯纸绝缘、聚氯乙烯绝缘、交联聚乙烯绝缘电缆在空气中时长期允许载流量（25oC时）长期允许载流量A导体截面积诚KV6KVOKV芯-芯三芯四纸绝缘聚氯乙烯绝缘

9、纸绝缘聚氯乙烯绝缘纸绝缘聚氯乙烯绝缘纸绝缘纸绝缘聚氯乙烯绝缘一父联聚乙烯绝缘纸绝缘一父联聚乙烯绝缘4372726425353O664655O455O4554666668862O755O755o7665558668822058999979958700889953295X885X9950044o95299O25500635444T544455XO244XO75288888T1I%88T55431XO944883998525OX022274oo98a222885O2O22O755555562562555O2533550723462050TI%oo5535353O72535475465456543O7

10、2O2O44O45OO4o543O21182表3环境温度变化时载流量的校正系数导体工作温度oC环境温度oC5101520253035404590801.171.131.0910.41.00.9540.9050.8350.798651.221.171.121.061.00.9350.8650.7910.707601.251.201.131.071.00.9260.8450.7560.655环境温度变化时，载流量的校正系数也可按下式计算：校正系数=(A92/A91)1/292导体工作温度与载流量表中规定的环境温度之间的温差，0C;A91导体工作温度与实际环境温度之间的温差，oCo表4土壤热阻系数不

11、同时载流量的校正系数土壤热阻系数分为：潮湿地区，取6080;普通土壤地区，取120;干燥土壤导体截面积mm土壤热阻系数为80oCm/W60801201602002.5161.061.00.90.830.7725951.081.00.880.800.731202401.091.00.860.780.71取1602000表5电缆直埋地下多根并列敷设时载流量的校正系数电缆间净距mm并列根并列数123456789101001.00.900.850.800.780.750.730.720.710.702001.00.920.870.840.820.810.800.790.790.783001.00.93

12、0.900.870.860.850.850.840.830.83表6电缆在空气中多根并列敷设时载流量的校正系数电缆根数1234646排列方式0oooooOOOoooooOOOO00Gooooo中S=d1.00.90.850.820.800.800.75心S=2d1.01.00.980.950.900.900.90距S=3d1.01.01.00.980.961.00.96d为电缆外径，并列敷设的电缆外径不同时，d建议取各电缆外径的平均值表7国产电缆部标准与IEC标准中规定的电缆芯最高允许工作温度电缆类型电压1KV6KV10KV部标IEC部标IEC部标IEC粘性生油浸纸绝缘电缆808065806065不滴流油纸绝缘电缆808080806565橡塑绝缘电缆6570657070父联厌聚乙烯绝缘电缆90909090表8电缆芯短路时的最高允许温度及热稳定系数C值电缆类型铜芯铝芯最高允许温度oCC值最高允许度。CC值油纸绝缘电缆3KV220200876KV2202009310KV22020095交联聚乙烯绝缘缆10KV及以下22020082聚氯乙烯绝缘6KV130130聚乙烯绝缘6KV140140有中间接头的电缆，在短路时的最高允许温度：锡焊接头120oC,压接头150oC,电焊或气焊接头与无接头相同。