High Voltage Cables

High Voltage Cables

 

230/400kV XLPE Insulated, PE Sheathed High Voltage Power Cables

Application

These single core cables are designed for distribution of electrical power with nominal voltage 230/400kV. 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

230/400kV 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 Copper wire screen.
Moisture Barrier For radial moisture barrier a coated aluminium foil is longitudinally applied. The combination with the polyethlene oversheath is called aluminium polyethlene laminated (APL) sheath. This solution provides high short circuit capability and watertightness combined with lowest weight and smallest dimensions. For all XLPE insulated high voltage cables, the space between cable core and water barrier is made longitudinally watertight.
Outer Sheath Extruded polyethylene.

 

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
630 33.0 170 118 17 13
800 31.0 170 118 18 13
1000(RM) 29.0 170 118 20 14
1000(RMS) 29.0 170 121 20 14
1200 27.0 170 120 22 14
1400 27.0 170 123 24 15
1600 27.0 170 127 26 16
1800 26.0 170 128 28 17
2000 26.0 170 131 30 18
2500 26.0 170 138 36 20

 

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
630 0.0283 0.0469 0.0393 0.0622 0.119 0.46 594/412 481/333 499/346 406/281
800 0.0221 0.0367 0.0317 0.0500 0.134 0.44 636/441 512/355 545/378 440/305
1000(RM) 0.0176 0.0291 0.0276 0.0409 0.150 0.41 671/465 538/373 587/407 471/326
flat installation
1000(RM) 0.0176 0.0291 0.0232 0.0375 0.156 0.56 938/650 804/557 748/518 641/444
1200 0.0151 0.0247 0.0201 0.0319 0.171 0.55 1001/694 855/592 808/560 690/478
1400 0.0129 0.0212 0.0175 0.0275 0.180 0.53 1070/741 912/632 868/601 740/513
1600 0.0113 0.0186 0.0156 0.0240 0.188 0.52 1125/779 957/663 924/640 787/545
1800 0.0101 0.0165 0.0142 0.0213 0.201 0.51 1168/809 990/686 973/674 826/572
2000 0.0090 0.0149 0.0129 0.0193 0.209 0.50 1212/840 1026/711 1016/704 861/597
2500 0.0072 0.0119 0.0109 0.0156 0.226 0.47 1289/893 1086/752 1112/770 938/650