High Voltage Cables (HV) – Reliable Transmission for Critical Power Networks
Rated Voltage: 35kV to 500kV | XLPE Insulated | Copper & Aluminum Options
TOT Wire & Cable supplies a comprehensive range of High Voltage Cables (HV Cables) designed for long-distance, high-load power transmission in utility, industrial, and infrastructure projects. With rated voltages from 35kV up to 500kV, our HV cables are engineered for superior electrical performance, insulation reliability, and long-term durability.
What is a High Voltage Cable?
A high voltage cable is a power transmission cable designed to carry voltages typically above 35kV. These cables are used in substations, national grids, power plants, and major infrastructure projects to transmit electricity over long distances with minimal power loss.
TOT offers HV XLPE insulated cables that comply with IEC, GB, and BS standards, ensuring safe operation, mechanical protection, and long service life.
Common searches: HV cable specification, high voltage underground cable, 110kV power cable, 500kV XLPE cable, high voltage cable manufacturers in China
Technical Specifications
| Feature | Description |
|---|---|
| Rated Voltage | 35kV / 66kV / 110kV / 132kV / 220kV / 275kV / 400kV / 500kV |
| Conductor Material | Copper or Aluminum (Stranded/Sector Shaped) |
| Insulation | XLPE (Cross-Linked Polyethylene) |
| Screening | Conductor & Insulation Screens (Semi-conductive) |
| Metal Shielding | Copper Tape or Wire Screen |
| Armor (Optional) | Corrugated Aluminum / Lead Sheath / Steel Wire |
| Outer Sheath | PE, PVC, or Flame Retardant Compounds |
| Standard | IEC 60840, IEC 62067, GB/T 11017, BS 7870 |
| Temperature Rating | 90°C continuous, 250°C short circuit (5s) |
Features of Our HV Power Cables
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High Electrical Strength – Minimal dielectric loss, excellent surge resistance -
XLPE Insulation – Long life, low aging, high temperature performance -
Multiple Shielding Layers – For superior electrical and mechanical protection -
Eco-Friendly Materials – RoHS compliant, low smoke, halogen-free options available -
Customizable Design – Tailored for overhead or underground installation -
Strong Outer Sheath – Moisture, corrosion, and flame resistant
Common HV Cable Products We Supply
| Product Name | Voltage Rating | Application |
|---|---|---|
| XLPE 66kV Cable | 66kV | Regional substation transmission |
| XLPE 110kV Cable | 110kV | Industrial power grids |
| XLPE 220kV HV Cable | 220kV | National transmission lines |
| XLPE 400kV HV Cable | 400kV | Long-distance high-load infrastructure |
| XLPE 500kV HV Cable | 500kV | Extra high-voltage transmission lines |
Applications
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National power grid transmission
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Electrical substations and switchyards
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Underground HV cable networks
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Industrial zones, power plants, and mines
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Renewable energy power evacuation (wind, hydro, solar farms)
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Railway and metro electrification systems
Why Choose TOT HV Cables?
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One-stop high voltage cable manufacturer -
Advanced XLPE insulation production technology
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Full type test, routine test, and third-party inspection available
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Custom lengths, drum packaging, and project support
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Fast delivery for domestic and export orders
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Competitive high voltage cable price with guaranteed quality
Request a Quote for HV XLPE Cable
Whether you’re planning a 66kV substation, 110kV grid upgrade, or sourcing 500kV underground power cable, TOT provides trusted solutions for global clients.
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