Continuous Current Ratings of XLPE Insulated Underground Power Cable

Continuous Current Ratings of  XLPE Insulated Underground Power Cable

Continuous current ratings or continuous current carrying capacity of XLPE (Crossed Poly Ethylene) insulated underground power cable is not same all the time. Current carrying capacity of cable depends on cable laying conditions and its ambient temperature. The major considerable conditions for current carrying capacity of underground power cables are as-

Ground Temperature of cable vicinity;

Depth of cable laying ;

Soil Thermal Resistivity;

Cable Ambient Temperature;

Maximum Conductor Temperature;

Cable Formation;

System Frequency;

Load Factor, etc.

Cable Construction:

Cable construction may be various types depending on voltage ratings, conductor size and type, sheath type etc. Here we tried to show continuous current carrying capacity varies due to cable laying in direct buried, in pipe duct and trefoil  & flat position in air  for aluminium sheath, Lead sheath or copper wire shield XLPE insulated PE or PVC outer sheath copper conductor high and extra high voltage power cable.

66 kV Aluminium Sheath Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  36/66 (72.5) kV Cable with Copper Conductor, XLPE Insulation, Aluminium Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct     Buried)	Pipe Duct	In Air
			Trefoil	Flat (S=2D)
240	524	491	598	671
300	592	556	682	770
400	671	631	781	888
500	762	714	894	1025
630	878	808	1023	1187
800	965	928	1150	1355
1000	1119	1075	1361	1615
1200	1198	1146	1460	1745
1600	1352	1357	1654	2030
2000	1468	1475	1800	2273

66 kV Lead Sheath Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  36/66 (72.5) kV Cable with Copper Conductor, XLPE Insulation, Lead Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
240	535	525	621	706
300	606	567	710	810
400	691	646	822	942
500	787	733	951	1098
630	898	833	1096	1274
800	1008	958	1243	1462
1000	1184	1121	1505	1759
1200	1282	1208	1648	1938
1600	1469	1434	1906	2282
2000	1626	1585	2130	2597

66 kV Copper Wire Shield Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  36/66 (72.5) kV Cable with Copper Conductor, XLPE Insulation, Copper Wire Shield,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
240	530	483	606	692
300	599	544	693	795`
400	683	616	802	925
500	780	729	929	1075
630	886	828	1066	1247
800	997	929	1210	1432
1000	1173	1087	1473	1728
1200	1270	1173	1611	1894
1600	1465	1375	1883	2245
2000	1627	1530	2111	2556

110 kV Aluminium Sheath Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  64/110 (123)  kV Cable with Copper Conductor, XLPE Insulation, Aluminium Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Burrid)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
240	520	491	592	657
300	587	550	677	755
400	667	639	775	873
500	758	725	889	1006
630	860	821	1020	1169
800	961	915	1147	1333
1000	1109	1057	1346	1581
1200	1187	1180	1451	1717
1600	1338	1332	1635	1995
2000	1458	1447	1787	2236
2500	1538	1526	1885	2358

110 kV Lead Sheath Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  64/110 (123)  kV Cable with Copper Conductor, XLPE Insulation, Lead Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
240	533	498	617	692
300	602	563	705	794
400	687	654	816	923
500	782	744	939	1068
630	891	846	1083	1243
800	1001	949	1229	1425
1000	1176	1108	1486	1718
1200	1269	1235	1612	1871
1600	1455	1415	1870	2206
2000	1609	1562	2087	2505
2500	1695	1647	2201	2642

110 kV Copper Wire Shield Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  64/110 (123)  kV Cable with Copper Conductor, XLPE Insulation, Copper Wire Shield,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Burrid)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
240	528	495	605	682
300	597	559	692	783
400	681	650	800	909
500	775	739	922	1053
630	884	841	1065	1226
800	994	945	1208	1406
1000	1169	1106	1465	1695
1200	1264	1231	1595	1849
1600	1456	1415	1860	2185
2000	1618	1570	2089	2487
2500	1706	1656	2203	2623

132 kV Aluminium Sheath  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  76/132 (145) kV Cable with Copper Conductor, XLPE Insulation, Aluminium Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
240	519	486	589	649
300	585	547	671	742
400	665	635	770	858
500	755	716	883	992
630	856	814	1011	1151
800	956	942	1137	1313
1000	1103	1093	1333	1555
1200	1185	1170	1439	1695
1600	1333	1324	1627	1972
2000	1452	1435	1777	2211
2500	1530	1512	1872	2330

132 kV Lead Sheath Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  76/132 (145) kV Cable with Copper Conductor, XLPE Insulation, Lead Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Burrid)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
240	530	495	612	679
300	600	559	702	781
400	684	636	808	904
500	780	727	934	1050
630	889	840	1077	1222
800	997	941	1222	1400
1000	1170	1100	1469	1681
1200	1264	1226	1599	1842
1600	1449	1404	1853	2168
2000	1600	1548	2064	2460
2500	1686	1631	2175	2592

132 kV Copper Wire Shield Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  76/132 (145) kV Cable with Copper Conductor, XLPE Insulation, Copper Wire Shield,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
240	525	492	601	673
300	593	555	688	774
400	675	632	792	896
500	767	716	908	1033
630	872	811	1045	1200
800	979	932	1182	1374
1000	1145	1087	1420	1649
1200	1233	1212	1539	1801
1600	1414	1388	1784	2125
2000	1569	1532	2003	2418
2500	1653	1614	2111	2548

161 kV Aluminium Sheath Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  87/161 (170) kV Cable with Copper Conductor, XLPE Insulation, Aluminium Sheath ,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
300	584	558	669	740
400	664	634	768	855
500	754	718	879	988
630	853	811	1009	1146
800	953	938	1134	1307
1000	1100	1087	1328	1548
1200	1179	1163	1429	1684
1600	1331	1311	1627	1967
2000	1447	1485	1774	2199
2500	1523	1563	1868	2315

161 kV Lead  Sheath Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  87/161 (170) kV Cable with Copper Conductor, XLPE Insulation, Lead Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
300	598	557	698	775
400	682	648	805	898
500	777	736	928	1042
630	886	836	1073	1214
800	996	939	1218	1391
1000	1168	1131	1464	1670
1200	1259	1221	1589	1825
1600	1445	1398	1845	2152
2000	1597	1541	2060	2445
2500	1681	1622	2169	2574

161 kV Copper Wire Shield Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  87/161 (170) kV Cable with Copper Conductor, XLPE Insulation, Copper Wire Shield ,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
300	591	553	684	765
400	673	629	789	887
500	766	713	907	1027
630	871	829	1043	1193
800	977	928	1181	1367
1000	1143	1081	1415	1639
1200	1232	1208	1535	1790
1600	1404	1382	1765	2100
2000	1554	1523	1973	2384
2500	1636	1603	2077	2510

230 kV Aluminium Sheath  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  127/230 (245) kV Cable with Copper Conductor, XLPE Insulation, Aluminium Sheath ,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
400	657	641	757	836
500	745	725	866	962
630	843	822	989	1111
800	943	916	1116	1268
1000	1090	1057	1310	1505
1200	1165	1131	1403	1631
1600	1316	1322	1596	1902
2000	1438	1440	1758	2143
2500	1512	1514	1849	2254

230 kV Lead Sheath  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  127/230 (245) kV Cable with Copper Conductor, XLPE Insulation, Lead Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
400	676	638	793	871
500	770	745	914	1010
630	876	847	1054	1173
800	986	950	1196	1343
1000	1153	1108	1429	1606
1200	1243	1194	1552	1757
1600	1424	1401	1797	2068
2000	1571	1545	2004	2342
2500	1652	1625	2108	2463

230 kV Copper Wire Shield  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  127/230 (245) kV Cable with Copper Conductor, XLPE Insulation, Copper Wire Shield,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
400	668	634	779	863
500	759	719	895	998
630	864	842	1031	1159
800	970	944	1167	1326
1000	1131	1100	1390	1583
1200	1221	1185	1512	1733
1600	1397	1354	1750	2040
2000	1543	1489	1950	2309
2500	1623	1566	2051	2429

345 kV Aluminium Sheath  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  190/345 (362) kV Cable with Copper Conductor, XLPE Insulation, Aluminium Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
630	832	822	976	1092
800	928	917	1095	1239
1000	1072	1060	1284	1467
1200	1149	1136	1383	1595
1600	1299	1325	1577	1859
2000	1419	1446	1726	2089
2500	1491	1519	1814	2195

345 kV Lead  Sheath  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  190/345 (362) kV Cable with Copper Conductor, XLPE Insulation, Lead Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
630	862	828	1032	1141
800	970	936	1173	1305
1000	1133	1107	1399	1561
1200	1222	1193	1520	1706
1600	1400	1364	1764	2009
2000	1541	1540	1961	2270
2500	1619	1618	2061	2385

400 kV Aluminium  Sheath  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  220/400 (420) kV Cable with Copper Conductor, XLPE Insulation, Aluminium Sheath ,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
630	825	812	967	1081
800	920	907	1090	1231
1000	1062	1046	1279	1458
1200	1139	1120	1372	1581
1600	1292	1304	1569	1842
2000	1410	1422	1711	2067
2500	1480	1493	1796	2170
3000	1570	1582	1904	2300

400 kV Lead  Sheath  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  220/400 (420) kV Cable with Copper Conductor, XLPE Insulation, Lead Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
630	856	819	1024	1131
800	960	925	1161	1291
1000	1122	1093	1385	1542
1200	1208	1178	1501	1683
1600	1380	1375	1734	1971
2000	1520	1513	1926	2231
2500	1596	1588	2022	2342
3000	1691	1683	2143	2483

500 kV Aluminium  Sheath  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  290/500 (525) kV Cable with Copper Conductor, XLPE Insulation, Aluminium Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
800	910	890	1080	1221
1000	1052	1036	1270	1447
1200	1128	1110	1361	1565
1600	1281	1284	1555	1825
2000	1400	1400	1700	2050
2500	1470	1470	1785	2150
3000	1560	1558	1895	2280

500 kV Lead  Sheath  Cable:

Continuous Current Ratings in ampear (A) for Single Circuit  of  290/500 (525) kV Cable with Copper Conductor, XLPE Insulation, Lead Sheath,  PE (or PVC) Outer Sheath power cable.

Cross-Sectional Area (sqmm)	Direct Buried)	Pipe Ducc	In Air
			Trefoil	Flat (S=2D)
800	950	915	1151	1280
1000	1110	1082	1375	1522
1200	1188	1167	1475	1658
1600	1360	1360	1710	1946
2000	1500	1495	1900	2206
2500	1575	1570	1995	2316
3000	1670	1665	2115	2455