High Voltage Cables

    High Voltage Cables

127/220kV XLPE Insulated, PE Sheathed High Voltage Power Cables

Application

These single core cables are designed for distribution of electrical power with nominal voltage 127/220kV. They are suitable for installation mostly in power supply stations, indoors and in cable ducts, outdoors, underground and in water as well as for installation on cable trays for industries, switchboards and power stations.

Standard

IEC 62067

Construction

127/220kV XLPE Insulated,PE Sheathed High Voltage Power Cables
Conductor The cable conductors can be made of copper or aluminium, depending on customer’s preference or current carrying capacity. Large size solid conductors are made of aluminium. Available constructions including: round solid conductors up to 2000mm² (RE); circular stranded compacted conductors up to 1200mm² (RM); circular conductors with shaped wires up to 2000mm² (RM, Keystone conductors); segmental conductors up to 2500 mm² (RMS, Milliken conductors); oval shaped stranded compacted conductors up to 800mm² for external gas pressure cables (OM).
Conductor Screen Extruded layer of semi-conducting cross-linkable compound is applied over the conductor and shall cover the surface completely.
Insulation Insulation is of cross-linked polyethylene compound XLPE.
Insulaton Screen Extruded layer of semi-conducting cross-linkable compound is applied over the insulation.
Metallic Layer The metallic layer may be applied over the core assembly collectively. The metallic screen shall consist of either copper tapes or a concentric layer of copper wires or a combination of tapes and wires.
Separation Sheath Aluminum Tape sheath.
Outer Sheath PE

Dimensional Data

Nom. Cross-Section Area Nom. Insulation Thickness Copper Wire Screen Area Approx. Overall Diameter Approx. Weight
CU AL
mm² mm mm² mm kg/m
240 25.0 50 83.0 7.4 5.9
300 24.0 50 83.0 8.0 6.1
400 22.0 50 82.0 8.6 6.2
500 22.0 50 86.0 9.9 6.8
630 22.0 50 90.0 11.4 7.5
800 19.0 50 88.0 12.5 7.5
1000 19.0 110 98.0 16.0 10.0
1200 18.0 110 100.0 18.0 10.6
1400 18.0 110 103.0 20.0 11.4
1600 18.0 110 108.0 22.0 12.4
1800 19.0 110 113.0 25.0 13.6
2000 19.0 110 116.0 27.0 14.5
2500 19.0 110 123.0 32.0 16.6

Electrical Data

Nom. Cross-Section Area D C Resistance @20°C A C Resistance @90°C Capacitance per core Inductance Current Ratings/PowerRatings (continuous load)
Cu conductor Al conductor
Cu Al Cu Al 1 circuit 2 circuits 1 circuit 2 circuits
mm² Ω/km Ω/km Ω/km Ω/km μF/km mH/km A/MVA A/MVA
              trefoil installation
240 0.0754 0.125 0.0973 0.161 0.106 0.49 423/161 357/136 333/127 282/107
300 0.0601 0.100 0.0781 0.129 0.116 0.47 470/179 396/151 372/142 314/120
400 0.0470 0.0778 0.0618 0.101 0.133 0.44 524/200 440/168 420/160 352/134
500 0.0366 0.0605 0.0492 0.0791 0.143 0.42 584/223 489/186 473/180 396/151
630 0.0283 0.0469 0.0393 0.0622 0.155 0.41 648/247 540/206 531/202 443/169
800 0.0221 0.0367 0.0326 0.0500 0.187 0.38 702/267 582/222 587/224 487/186
              flatinstallation
1000 0.0176 0.0291 0.0232 0.0375 0.215 0.56 989/377 857/327 782/298 678/258
1200 0.0151 0.0247 0.0201 0.0319 0.236 0.55 1060/404 917/349 849/324 734/280
1400 0.0129 0.0212 0.0175 0.0275 0.248 0.53 1136/433 981/374 915/349 790/301
1600 0.0113 0.0186 0.0156 0.0240 0.260 0.52 1201/458 1035/394 979/373 844/322
1800 0.0101 0.0165 0.0142 0.0213 0.260 0.51 1253/477 1080/412 1035/394 892/340
2000 0.0090 0.0149 0.0129 0.0193 0.270 0.50 1308/498 1126/429 1086/414 935/356
2500 0.0072 0.0119 0.0109 0.0156 0.294 0.47 1406/536 1207/460 1201/458 1031/393