XLPE Insulated DC High-Voltage Submarine Cable | Offshore HVDC Power Transmission Cable

Submarine Cables6
Description

Product Overview

XLPE Insulated DC High-Voltage Submarine Cables are engineered for efficient HVDC power transmission to offshore islands, oil platforms, and river/lake crossings. Featuring XLPE insulation, lead sheath moisture barrier, and galvanized steel wire armour, these cables deliver superior performance in demanding subsea DC transmission applications while complying with international standards including VDE, IEC, and ICEA.

Applications

  • HVDC power transmission to offshore islands

  • Oil and gas platform DC power supply

  • River and lake HVDC crossings

  • Submarine HVDC transmission networks

  • Offshore renewable energy HVDC connections

  • Long-distance underwater DC power transmission

Construction

XLPE Insulated DC High-Voltage Submarine Cable | Offshore HVDC Power Transmission Cable

  • Conductor: Copper conductor, water blocked

  • Conductor Screening: Extruded semi-conductive compound

  • Insulation: XLPE (Cross-linked Polyethylene)

  • Insulation Screening: Extruded semi-conductive compound

  • Separator: Swelling tape

  • Core Sheath 1: Lead Sheath

  • Core Sheath 2: PE sheath

  • Bedding: Bedding layer

  • Armour: Galvanized steel wires filled with bitumen compound

  • Serving: Polypropylene yarn

Electrical Data

127/220(245) kV

Cross Section (mm²) Capacitance (μF/km) Inductance (mH/km) Charging Current @50Hz (A/km)
500 0.14 1.42 5.8
630 0.16 1.40 6.4
800 0.17 1.37 6.9
1000 0.19 1.35 7.4
1200 0.20 1.33 7.8
1400 0.21 1.32 8.2
1600 0.22 1.31 8.6

160/275(300) kV

Cross Section (mm²) Capacitance (μF/km) Inductance (mH/km) Charging Current @50Hz (A/km)
500 0.14 1.42 6.8
630 0.16 1.40 7.7
800 0.17 1.37 8.3
1000 0.18 1.35 9.0
1200 0.19 1.33 9.5
1400 0.20 1.32 10.0
1600 0.21 1.31 10.4

200/345(362) kV

Cross Section (mm²) Capacitance (μF/km) Inductance (mH/km) Charging Current @50Hz (A/km)
630 0.14 1.40 8.8
800 0.15 1.37 9.7
1000 0.17 1.35 10.7
1200 0.18 1.33 11.1
1400 0.19 1.32 11.6
1600 0.20 1.31 12.1

230/400(420) kV

Cross Section (mm²) Capacitance (μF/km) Inductance (mH/km) Charging Current @50Hz (A/km)
630 0.13 1.40 9.6
800 0.15 1.37 10.7
1000 0.16 1.35 11.7
1200 0.18 1.33 12.9
1400 0.19 1.32 13.5
1600 0.19 1.31 14.1

Dimensions and Weight

127/220(245) kV

Cross Section (mm²) Conductor Diameter (mm) Insulation Thickness (mm) Diameter Over Insulation (mm) Lead Sheath Thickness (mm) Overall Diameter (mm) Weight (kg/m)
500 26.2 24.0 77.6 2.9 111.0 29.3
630 29.8 23.0 79.2 3.0 112.8 31.2
800 33.7 23.0 83.1 3.1 117.5 34.5
1000 37.9 23.0 87.3 3.1 121.9 37.7
1200 41.2 23.0 90.6 3.1 125.2 40.4
1400 44.4 23.0 93.8 3.1 128.6 43.2
1600 47.4 23.0 96.8 3.1 131.8 46.0

160/275(300) kV

Cross Section (mm²) Conductor Diameter (mm) Insulation Thickness (mm) Diameter Over Insulation (mm) Lead Sheath Thickness (mm) Overall Diameter (mm) Weight (kg/m)
500 26.2 26.0 81.6 3.0 115.2 31.1
630 29.8 24.0 81.2 3.0 114.8 31.8
800 33.7 24.0 85.1 3.1 119.5 35.2
1000 37.9 24.0 89.3 3.1 123.9 38.4
1200 41.2 24.0 92.6 3.1 127.4 41.6
1400 44.4 24.0 95.8 3.1 130.6 44.4
1600 47.4 24.0 98.8 3.1 133.8 47.2

200/345(362) kV

Cross Section (mm²) Conductor Diameter (mm) Insulation Thickness (mm) Diameter Over Insulation (mm) Lead Sheath Thickness (mm) Overall Diameter (mm) Weight (kg/m)
630 29.8 28.0 89.2 3.1 123.4 35.2
800 33.7 27.0 91.1 3.1 125.9 37.5
1000 37.9 26.0 93.3 3.1 128.1 39.9
1200 41.2 25.0 94.6 3.1 129.4 42.0
1400 44.4 25.0 97.8 3.1 132.8 44.9
1600 47.4 25.0 100.8 3.1 135.8 47.7

230/400(420) kV

Cross Section (mm²) Conductor Diameter (mm) Insulation Thickness (mm) Diameter Over Insulation (mm) Lead Sheath Thickness (mm) Overall Diameter (mm) Weight (kg/m)
630 29.8 32.0 98.2 3.1 132.8 38.8
800 33.7 30.0 98.1 3.1 133.1 40.2
1000 37.9 29.0 100.3 3.1 135.3 42.6
1200 41.2 27.0 99.6 3.1 134.6 44.0
1400 44.4 27.0 102.8 3.1 138.0 46.9
1600 47.4 27.0 105.8 3.1 141.0 49.7