常用導(dǎo)線允許載流量

1、常用導(dǎo)線允許載流量1、單條圓形導(dǎo)線的載流量（按環(huán)竟溫度 +25C、最高允許溫度+70C）銅線鋁線鋼芯鋁交線導(dǎo)線型號(hào)mm2載流量A導(dǎo)線型號(hào)mm2載流量A導(dǎo)線型號(hào)mm2屋外載 流量A屋外屋內(nèi)屋外屋內(nèi)T 45025L107555LG-16150T 67035L1610585LG- 25135T109560L25135110LG- 35170T16130100L 35170135LG- 50220T 25180140L 50215170LG- 70275T 35220175L 70265215LG- 95335T 50270220L 95325260LG-120380T 60315250L120375

2、310LG-150445T 70340280L150440370LG-185515T 95415340L185500425LG- 240610T120485405L240610LG- 300700T150570480L 300680LG- 400800T185645550L400830LGQ- 330740T 240770650L 500980LGQ- 480925T 300890L6251140T 40010852、單條矩形母線載流量 A （按環(huán)竟溫度+25E、最高允許溫度+70C）導(dǎo)線截面mm2鋁母線銅母線導(dǎo)線截面mm2鋼母線平放豎放平放豎放平放豎放15X 315616520021020

3、X 3626520 X 320421526127525 X 3768025 X 325226532334030 X 3909530 X 434736545147540 X 311912540 X 445648059362550 X 314715540 X 551854066570060 X 317618550 X 563266581686070 X 320421550 X 670374090695580 X 323324560 X 68268701069112590 X 325327560 X 8975102512511320100X 328130560 X 10110011551395147

4、520 X 4677080 X 6105011501360148025 X 4818580 X 8121513201553169030 X 49510080 X 10136014801747190040 X 4124130100X 6131014251665181050 X 4157165100X 8149516251911208060 X 4185195100X 10167518202121231070 X 4207225120X 8175019002210240080 X 4240260120X 10190520702435265090 X 4267290100X 4295320注：當(dāng)環(huán)境

5、溫度不是+25C時(shí)、表中允許載流量需要乘以溫度校正系數(shù)KQ式中：0 實(shí)際環(huán)境溫度C。0 e額定環(huán)境溫度C3、多條矩形母線載流量 A (按環(huán)竟溫度+25C、最高允許溫度+70C)導(dǎo)線截面(mr)i 2鋁母線銅母線菱形母線平放豎放平放豎放單母線鋁母線銅母線2 (60X6)128213501650174080 X 8455057502 (60X8)159616802050216080 X 10510064002 (60 X 10)1910201024302560100X 8555070002 (80X6)1500163019402100100 X10620077002 (80X8)187620402

6、4102620120 X10730090502 (80 X 10)22372410285031002 (100X 6)17801935227024702 (100X 8)22002390281030602( 100X 10)26302860332036102 (120X 8)24402650313034002( 120X 10)29453200377041003 (60X6)15821720206022403 (60X8)20052180256527903 (60 X 10)25202650313533003 (80X6)19302100250027203 (80X8)241026203100

7、33703 (80 X 10)28703120367039903 (100X 6)23002500292031703 (100X 8)28003050361039303( 100X 10)33503640428046503 (120X 8)31103380399543403( 120X 10)37704100478052004( 100X 10)38204150487553004( 120X 10)4275465054305900附錄電纜長(zhǎng)期允許載流量表1鋁芯紙絕緣、聚氯乙烯絕緣、交聯(lián)聚乙烯絕緣電纜直埋地下時(shí)長(zhǎng)期允許載流量（25oC, 土壤熱阻系數(shù)為80oCm/VV導(dǎo)體截面積誠(chéng)A 量 流 軟

8、許 允 期 長(zhǎng)1KVV K6V K O1芯一芯 三芯丿四紙絕緣聚氯乙烯絕緣紙絕緣聚氯乙烯絕緣紙絕緣聚氯乙烯絕緣紙絕緣紙絕緣聚氯乙烯絕緣交聯(lián)聚乙烯絕緣紙絕緣交聯(lián)聚乙烯絕緣41372276423333O1665666156650665546706186768066806580706699659025200105188051850519981O190051335311213017 O1301O1301O10215310513015086174166133166153166153156130150170042O8190126190126190156154105250185994324223090123

9、0691I-052281-I855212017527245628256232256223009226052152450163772003824003252003260237592524752581O34792O34284O3459270253475252340240042300440053433593523753表2鋁芯紙絕緣、聚氯乙烯絕緣、交聯(lián)聚乙烯絕緣電纜在空氣中時(shí)長(zhǎng)期允許載流量 （25oC時(shí)）長(zhǎng)期允許載流量A導(dǎo)體截面積誠(chéng)1KVV K6V K O1芯丿一芯丿三芯丿四紙絕緣聚氯乙烯絕緣紙絕緣聚氯乙烯絕緣紙絕緣聚氯乙烯絕緣紙絕緣紙絕緣聚氯乙烯絕緣交聯(lián)聚乙烯絕緣紙絕緣交聯(lián)聚乙烯絕緣4137227

10、6423535O16646554055405548436666618862705570557066558566882205118997997399857300188993582199518851995100190521992055661321451145151451224551204517097125188831881141885514319014518899532581O22661220741O2290186122088052201702525529415521 O2552O22941552520532551073462003522003132003552322592532702581534

11、752534662534592652534702O23402O4530O4O4534301O23表3 環(huán)境溫度變化時(shí)載流量的校正系數(shù)導(dǎo)體工作溫度 oC環(huán)境溫度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環(huán)境溫度變化時(shí)，載流量的校正系數(shù)也可按下式計(jì)算：校正系數(shù)=(A 9 2/ A 9 1) 1/2 9 2導(dǎo)體工作溫度與載流量表中規(guī)定的環(huán)境溫度之間的溫差，o

12、C;A 9 1 導(dǎo)體工作溫度與實(shí)際環(huán)境溫度之間的溫差，oCo表4土壤熱阻系數(shù)不同時(shí)載流量的校正系數(shù)導(dǎo)體截面積mm土壤熱阻系數(shù)為 80 oCm/W60801201602002.5 161.061.00.90.830.7725 951.081.00.880.800.731202401.091.00.860.780.71土壤熱阻系數(shù)分為：潮濕地區(qū)，取 6080;普通土壤地區(qū)，取120;干燥土壤,取 160200o表5電纜直埋地下多根并列敷設(shè)時(shí)載流量的校正系數(shù)電纜間凈距mm并列根并列數(shù)123456789101001.00.900.850.800.780.750.730.720.710.702001.0

13、0.920.870.840.820.810.800.790.790.783001.00.930.900.870.860.850.850.840.830.83表6 電纜在空氣中多根并列敷設(shè)時(shí)載流量的校正系數(shù)電纜根數(shù)1234646排列方式ooooooOOOoooooOOOOOOGooooo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為電纜外徑，并列敷設(shè)的電纜外徑不同時(shí)，d建議取各電纜外徑的平均值。表7國(guó)產(chǎn)電纜部標(biāo)準(zhǔn)與IEC標(biāo)準(zhǔn)中規(guī)定的電纜芯最高允許工作溫度電纜類型電壓1KV6KV10KV部標(biāo)IEC部標(biāo)IEC部標(biāo)IEC粘性油浸紙絕緣電纜808065806065不滴流油紙絕緣電纜808080806565橡塑絕緣電纜6570657070交聯(lián)聚乙烯絕