6～35kV交联聚乙烯电缆注意事项和技术参数

1、635kV交联聚乙烯绝缘电力电缆，在施工和使用时必须注意以下事项： (1) 工频额定电压U0/U为3.6/6kV26/35kV。 (2) 正常运行时，电缆导体的最高工作温度：90。 (3) 短路时（最长时间不超过5秒），电缆导体的最高温度不超过250。 (4) 电缆敷设时，环境温度应不低于0。 (5) 电缆弯曲半径：单芯无铠装电缆，其弯曲半径应不小于电缆外径的20倍；单芯有铠装电缆，其弯曲半径应不小于电缆外径的15倍；三芯无铠装电缆，其弯曲半径应不小于电缆外径的15倍；三芯有铠装电缆，其弯曲半径应不小于电缆外径的12倍。 (6) 为了便于选择电缆，将系统划分为下列三类： A类：该系列任一相导体

2、与地或接地导体接触时，能在1分钟内与系统分离。B类：按照JB/T8996-1999的规定，该系统可在单相接地故障时短时运行，时间应不超过1小时。对本部分的电缆，在任何情况下允许不超过8小时的，更长的带故障运行时间。任何一年接地故障的总持续时间，应不超过125小时。 C类：包括但不属于A类、B类的所有系统。 (7) 应该认识到，在系统接地故障不能立即自动解除时，故障期间加在电缆绝缘上过高的电场强度，会在一定程度上缩短电缆寿命。 (8) 三相系统用电缆的额定电压表系统最高电压Um/kV额定电压U0/kVA类、B类C类7.23.66.012.06.08.717.58.712.024.012.018.

3、036.018.0-40.521.026.0 (9) 电缆埋地敷设时，土壤热阻系数g=1.0m/W,但尚未考虑电缆长期运行时，由于水份迁移而导致封热阻系数升高的现象。 (10) 电缆埋地敷设时，电缆的轴心与地面距离为1000mm。 (11) 多根电缆敷设时，电缆的轴心距离 L=3D。635kV交联聚乙烯绝缘电力电缆，主要技术参数如下： (1) 20时，导体最大直流电阻(/km)标称横截面(mm2)铜芯铝芯标称横截面(mm2)铜芯铝芯1.512.1-950.1930.3202.57.4112.11200.1530.2534.04.617.411500.1240.2066.03.084.61185

4、0.09910.164101.833.082400.07540.125161.151.913000.06010.100250.7271.24000.04700.0778350.5240.9695000.03660.0605500.3870.6416300.02830.0469700.2680.4438000.02210.0367 (2) 主要技术性能额定电压U0/U (kV)0.6/13.6/66/66/108.7/108.7/1512/2018/3021/3526/35局部放电试验(1.73 U0下)5工频5分钟耐压试验(kV)3.512.5212130.5426373.5914小时工频电压

5、(kV)2.414.4242435487284104绝缘的热延伸试验20015分钟 20N/cm2载荷下最大伸长率(%)冷却后最大永久伸长率(%)17515弯曲试验后局部放电试验(1.73 U0下)5室温下tg在U0下测，不大于0.5 U0与2 U0之间tg不大于-40 x 10-420 x 10-42kV下，tg值tg2kV1) 环境温度下，不大于2) 最大额定温度下，不大于-40 x 10-480 x 10-4加热到使导体比长期工作温度高5，热冲击(10次)(kV)不击穿-60757595125170200250 (3) 不同环境因素时,电缆载流量的校正系数。土壤热阻系数(.m/W)影响系

6、数土壤温度()导体最高温度()空气温度()导体最高温度()90809080700.71.1401.161.17101.261.321.411.01.0051.131.14151.221.271.351.20.93101.101.11201.181.221.291.50.84151.061.07251.141.171.222.00.74201.031.04301.091.111.152.50.67251.001.00351.041.061.08-300.960.96401.001.001.00-450.940.930.91-500.890.860.81 (4)相关技术参数：YJV、YJLV额定电

7、压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯3.6/6kV1 x 2518.00.261761372291781 x 3519.00.292141662752131 x 5020.50.332561993272561 x 7021.50.383202484003101 x 9524.00.423893024793721 x 12025.50.464483485444221 x 15027.00.515113966114731 x 18529.00.555834566875321 x 24032.50.616825297896091

8、x 30034.00.617736008766771 x 40038.00.658846859737561 x 50041.50.69100077510728311 x 63045.00.76111086111669043.6/6kV3 x 2535.00.291461131631273 x 3538.00.301751351941503 x 5041.00.332091622271763 x 7045.00.352612022752153 x 9548.00.393172463312563 x 12053.00.403652833742903 x 15056.30.4541632341932

9、53 x 18561.00.504753684713653 x 24066.00.545574325414203 x 30072.50.586354936074703 x 40079.50.58736570685531YJV22、YJLV22额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯3.6/6kV3 x 2540.50.241451121591233 x 3543.00.261741351891463 x 5046.00.292071602221723 x 7050.00.342561982702093 x 9554.00.

10、353102403222503 x 12058.50.403522743632813 x 15062.50.414013114063153 x 18565.50.444573544563543 x 24072.50.455334135254073 x 30078.00.476064705874553 x 40086.50.49700542662513YJV、YJLV额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯6/6kV6/10kV1 x 2520.50.211771372661751 x 3521.50.23214166271

11、2101 x 5022.50.262582003222501 x 7024.50.293212493953061 x 9525.00.333903034733671 x 12027.00.364493485374171 x 15029.50.395113966034671 x 18531.50.425814506765241 x 24033.50.476795267756011 x 30035.50.517715988666721 x 40039.00.598816839667491 x 50042.50.6599977410698291 x 63047.00.7211058581160899

12、YJV、YJLV额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯6/6kV6/10kV3 x 2541.00.261501161651283 x 3542.50.281811401951523 x 5045.50.302161682301783 x 7050.50.332672072782163 x 9554.50.363232513312563 x 12058.00.403702873732863 x 15062.00.414203254163233 x 18565.50.444773704663613 x 24071.00.4

13、95574325334163 x 30076.00.516284875914583 x 40083.00.56717555659511YJV22、YJLV22额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯6/6kV6/10kV3 x 2544.00.26123951541193 x 3546.10.281491151851433 x 5049.30.301781382181693 x 7053.10.332201702642053 x 9557.20.362682073182463 x 12060.60.403072383602

14、803 x 15064.30.413502724063153 x 18568.10.444003114593573 x 24073.50.494723685334153 x 30078.80.515394216034703 x 40087.40.56638502694546YJV、YJLV额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯8.7/10kV8.7/15kV1 x 2521.60.171651301601201 x 3522.90.192051551901451 x 5024.20.212451902251751 x 7

15、026.10.243052352752151 x 9527.70.263702903302551 x 12029.30.284303353752901 x 15030.90.314903804253301 x 18532.70.335604354803701 x 24035.10.376655155554351 x 30037.30.407655956304901 x 40041.90.468906957255651 x 50045.40.5210308108256501 x 63049.10.5611909509407458.7/10kV8.7/15kV3 x 2545.40.2312395

16、1531193 x 3548.00.251481141831423 x 5051.00.281781382181693 x 7054.80.302461722662063 x 9558.50.322672073182463 x 12061.70.343082393612803 x 15065.30.363352714063153 x 18569.00.413943104613593 x 24074.10.424653635294133 x 30079.10.455284135934643 x 40089.10.49622491682538YJV22、YJLV22额定电压标称横截面(mm2)参考

17、外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯8.7/10kV8.7/15kV3 x 2549.20.23126971541193 x 3551.40.251511171841433 x 5056.80.271811412181693 x 7058.50.312251752672073 x 9562.30.322732113182463 x 12066.00.343112423602803 x 15069.60.353532734043133 x 18573.50.394023124563553 x 24078.80.414733695314143 x 300

18、85.00.465404215984673 x 40094.60.49640503692544YJV62、YJLV62额定电压标称横截面(mm2)钢带厚度参考外径(mm)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯8.7/10kV8.7/15kV1 x 250.225.01441121741351 x 350.226.01741352081621 x 500.227.02091622481921 x 700.229.02562013042361 x 950.230.03142433632821 x 1200.232.03602794133201 x 1500.234.040931746

19、43601 x 1850.537.04703645234051 x 2400.539.05494256024671 x 3000.541.06234836755231 x 4000.545.07125527595881 x 5000.548.08076268446541 x 6300.552.0903700930721YJV、YJLV额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯12/20kV1 x 2523.90.151651301601201 x 3524.90.162051551901451 x 5026.40.18245

20、1902251751 x 7028.10.203052352752151 x 9529.90.223702903302551 x 12031.30.244303353752901 x 15033.10.264903804253301 x 18534.70.285604334803701 x 24037.10.316655155554351 x 30039.50.347655956304901 x 40044.10.398906957255651 x 50047.60.4410308108256501 x 63051.30.47119095094074512/20kV3 x 2550.10.22

21、128991551203 x 3552.50.251551201851433 x 5055.50.261801392181693 x 7059.30.282231732672073 x 9563.00.302712103182473 x 12066.20.323122433632823 x 15069.80.333632814173233 x 18573.70.354043154603583 x 24078.60.384713675314143 x 30083.80.405364195964663 x 40093.60.44630496684539YJV22、YJLV22额定电压标称横截面(m

22、m2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯12/20kV3 x 2555.50.221291001551203 x 3556.30.251561201851443 x 5059.50.261841432171693 x 7063.40.282291772672073 x 9567.30.302752133192473 x 12070.70.323162463632823 x 15074.30.333632814123193 x 18578.40.354083174603573 x 24084.60.384783725314133 x 30089.

23、70.405464255984663 x 400101.80.44638501686539YJV、YJLV额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯18/30kV1 x 2530.00.101841422171681 x 3531.00.122211722602021 x 5032.60.142451902251751 x 7034.30.163052352752151 x 9536.10.183702853302551 x 12037.50.194253303752901 x 15039.30.20485375420325

24、1 x 18540.90.225554304753701 x 24043.30.246505055554301 x 30045.70.267455806304901 x 40049.10.288706807205651 x 50054.60.3210007908256451 x 63058.40.351160920940740YJV、YJLV额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯18/30kV3 x 2563.00.101711331721333 x 3566.00.122051592031583 x 5069.50.1

25、42461882381853 x 7073.00.162972312882233 x 9576.00.183562763412643 x 12080.00.194073163842983 x 15083.00.204573554273113 x 18587.00.225154004773703 x 24092.00.245974625444223 x 30097.00.266705206034683 x 400104.00.28757586670520YJV22、YJLV22额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯18/3

26、0kV3 x 2568.00.101681301971303 x 3571.00.122011561991543 x 5074.00.142381842331803 x 7078.00.162902252822183 x 9582.00.183482703352593 x 12086.00.193973073782933 x 15090.00.204473474223273 x 18594.00.225053944743673 x 24099.00.245844535344203 x 300104.00.266595116074713 x 400112.00.28746579682528YJV

27、、YJLV额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯21/35kV1 x 5035.80.132451902251751 x 7037.50.153052352752151 x 9539.50.163702853302551 x 12040.70.174253303752901 x 15042.50.184853754203251 x 18544.10.195554304753701 x 24046.50.216505055554301 x 30048.90.237455806304901 x 40052.30.258706

28、807205651 x 50057.70.2810007908256451 x 63061.60.31116092094074021/35kV3 x 50770.132491932401863 x 70810.153052372912253 x 95840.163642823432663 x 120870.174143213862993 x 150910.184663614303333 x 185950.195244064793713 x 2401000.216084715474243 x 3001050.236805276064703 x 4001120.25769596676522YJV22、YJLV22额定电压标称横截面(mm2)参考外径(mm)电容(F/km)电缆允许载流量(A)空中敷设埋地敷设铜芯铝芯铜芯铝芯21/35kV3 x 50820.132441892351823 x 70870.152992322852113 x 95910.163572773382623 x 120940.174063143812963 x 150980.184553534253303 x 1851020.195133984773693 x 2401070.215984615474243 x 30