High Voltage Cable for 66kV to 500kV Grid Projects
XLPE insulated high voltage cable for transmission lines, substations, underground corridors, renewable energy grid connection and grid power systems.
XWA High Voltage Cable
As a high voltage cable manufacturer, XWA supplies 66kV to 500kV XLPE high voltage cables for grid transmission, substation connections and underground power corridors, with copper or aluminum conductors and metallic sheath options matched to project specifications.
XWA’s engineering team develops each HV cable construction according to the voltage class, conductor size, insulation level, metallic sheath system, water-blocking requirements and route conditions for transmission, renewable energy and special installation projects.
HV Cable Product Selection
XWA organizes HV cable production by voltage class, conductor system, sheath design and route condition, so each product page reflects a practical manufacturing and specification range.
High voltage cable is produced for grid transmission, substation connection, renewable energy evacuation, industrial power intake and underground power corridors that require transmission-grade insulated cable systems. XWA supplies HV power cable designs for voltage classes from 66kV to 500kV, with XLPE insulation, copper or aluminum conductors, metallic shielding or sheath systems and water-blocking options for international transmission work.
For each HV cable design, XWA reviews the rated voltage, short-circuit requirement, bonding arrangement, route environment, drum length and project specification before confirming the cable construction and production arrangement.
Transmission Voltage
66kV, 110kV, 132kV, 220kV, 275kV and 500kV designs for grid and utility-level power systems.
Screened XLPE System
Manufactured with conductor screen, XLPE insulation, insulation screen and metallic sheath options for controlled electric stress.
Route-Based Design
Factory configuration covers underground, substation, renewable grid connection, industrial intake and special transmission applications.
HV XLPE Cable Construction
XWA produces XLPE HV cable with a fully screened insulation system to control electric stress. A typical single-core underground high voltage cable includes a compacted copper or aluminum conductor, conductor screen, XLPE insulation, insulation screen, metallic screen or metallic sheath, water-blocking layers and an outer sheath suitable for the route environment.
| Conductor | Copper or aluminum compacted stranded conductor |
| Insulation System | Conductor screen, XLPE insulation and bonded insulation screen |
| Metallic Layer | Copper wire screen, corrugated aluminum sheath or lead sheath options |
| Water Blocking | Longitudinal water-blocking and radial water-barrier options |
| Outer Sheath | HDPE, MDPE, PVC, LSZH or semiconductive PE where specified |
HV Cable Voltage Range and Technical Data
XWA manufactures high voltage cable for transmission and grid-level power systems from 66kV to 500kV. IEC 60840 is normally used for extruded-insulation power cables above 30kV and up to 150kV, while IEC 62067 is normally used for extruded-insulation power cables above 150kV and up to 500kV. Factory documentation can be prepared around conductor size, insulation level, metallic sheath design, water blocking, bonding arrangement and routine testing requirements.
| Voltage Class | Common Voltage Designation | Applicable Standard | Product Page |
|---|---|---|---|
| 66kV | 36/66(72.5)kV | IEC 60840 project specifications | 66kV Cable |
| 110kV | 64/110(123)kV | IEC 60840 project specifications | 110kV Cable |
| 132kV | 76/132(145)kV | IEC 60840 project specifications | 132kV Cable |
| 220kV | 127/220(245)kV | IEC 62067 project specifications | 220kV Cable |
| 275kV | 160/275(300)kV | IEC 62067 project specifications | 275kV Cable |
| 500kV | 290/500(550)kV | IEC 62067 project specifications | 500kV Cable |
Manufacturing Reference Ranges
The technical data below summarizes common XWA manufacturing ranges for single-core XLPE high voltage cable by voltage class. Final conductor size, insulation thickness, metallic sheath design, diameter and ampacity are confirmed according to the approved cable schedule, installation conditions and applicable project specification.
| Voltage Class | Conductor Size Range | Reference Insulation Thickness | Approx. Overall Diameter | Reference Ampacity Range |
|---|---|---|---|---|
| 66kV | 185-1600mm² | 10.5-13mm | 55-95mm | 360-1450A |
| 110kV | 240-2500mm² | 16-18mm | 68-115mm | 430-1900A |
| 132kV | 400-2500mm² | 17-20mm | 77-117mm | 485-2005A |
| 220kV | 630-2500mm² | 24-27mm | 103-134mm | 622-1886A |
| 275kV | 800-2500mm² | 27-30mm | 115-145mm | 760-2000A |
| 500kV | 1000-3000mm² | 34-40mm | 145-185mm | 950-2600A |
Underground, Submarine and Special Transmission Routes
As an international high voltage cable manufacturer, XWA configures underground cable for urban transmission corridors, substation connections, industrial intake lines, renewable energy grid connection and routes where overhead transmission is restricted. Underground cable design considers route length, soil thermal conditions, cable spacing, pulling tension, joint bay layout, sheath bonding and protection against water ingress.
For submarine HV cable, XWA configures route-specific mechanical protection, armoring, water-blocking and installation requirements. See Submarine Cable and HV Submarine Power/Optical Cable for this application group.
Related Cable Categories
Related cable categories include Submarine Cable, Overhead Cable, MV Power Cable, LV Power Cable, ABC Cable, Control Cable and Rubber Cable.
FAQ
What is a high voltage cable?
A high voltage cable is a fully insulated power cable system used for transmission-level voltage. It includes the conductor, semiconductive screens, main insulation, metallic screen or sheath and outer protection layers required to control electric stress and safely transmit power.
What voltage range does XWA high voltage cable cover?
XWA manufactures common high voltage project classes from 66kV to 500kV, including 66kV, 110kV, 132kV, 220kV, 275kV and 500kV cable designs.
Which standards apply to HV XLPE cable?
IEC 60840 is normally used for extruded-insulation power cables above 30kV and up to 150kV. IEC 62067 is normally used for extruded-insulation power cables above 150kV and up to 500kV. Project specifications may also include national grid or utility requirements.
Can HV cable be installed underground?
Yes. Underground high voltage cable is widely used for urban transmission routes, substations, industrial intake lines and renewable energy grid connections. Cable spacing, soil thermal resistivity, laying depth, bonding mode and route protection affect the final design.
How are higher HV cable classes different?
Higher high voltage cable classes such as 220kV, 275kV and 500kV require more demanding control of insulation thickness, metallic sheath design, accessories, testing and installation conditions. XWA treats 220kV as a high voltage transmission cable class.
How does XWA control HV cable production quality?
XWA arranges HV cable production through joint manufacturing with qualified partner factories. XWA confirms the project specification, coordinates conductor preparation, insulation extrusion, screen and sheath configuration, dimensional checks and routine test records, and controls the agreed documentation and delivery scope.
How does XWA prepare an HV cable quotation?
XWA reviews voltage designation, conductor material and size, route length, installation method, metallic sheath or screen requirement, bonding arrangement, short-circuit level, sheath material, drum length and required standard before preparing the cable offer.
Contact XWA for HV Cable Projects
XWA prepares HV cable offers around voltage class, conductor material, route length, installation method, sheath design and required standard, with cable construction matched to the confirmed project specification.