66/110kV High Voltage Power Distribution Series

This series is engineered for state-level electrical grids, bulk power transmission lines, and primary regional substations operating at high voltage ratings from 66kV up to 110kV.

Conductor, Insulation, and Shielding Combinations

♦ Conductors: Premium large-cross-section copper (CU) or aluminum (AL) conductors designed for maximum ampacity.

♦ Insulation & Sheath: Utilizes ultra-clean XLPE insulation as the standard premium dielectric layer. The external jacket can be selected independently between weather-resistant PVC and PE depending on project environmental criteria.

♦ Waterproof Barriers: Built with heavy-duty radial and longitudinal waterproof systems featuring specialized Corrugated Aluminum Sheaths, combined with semi-conductive screens and water-blocking swelling tapes to prevent electro-treeing breakdown.

♦ Specific Selection: Specific selection depends on project grid load, installation depth, and ambient environment. For example: maximum continuous transmission capacity, uniform electric field distribution, or permanent lightweight moisture sealing — all achievable through material combinations.

Mechanical Protection and Optional Upgrades

Standard configurations include non-armoured or robust corrugated aluminum protective profiles. Optional add-ons:

♦ Tailored semi-conductive outer layers to simplify routine post-installation sheath voltage testing

♦ Anti-termite / anti-rodent chemical sheaths for direct burial or rugged underground layouts

Compliance

All cables comply with IEC 60840. Third-party test reports available upon request.

38/66kV Cable

This High Voltage Cable and 38/66kV Cable series is engineered for high-capacity sub-transmission networks, industrial plant main feeds, and heavy wind/solar power farm connections. As a cornerstone of regional high-voltage transmission, this optimized range strikes the perfect balance between high-power delivery and structural flexibility for expanding urban utility grids.

·Standards: IEC 60840

·Cores: 1 Core Only (Note: Single-core execution isolates alternating electromagnetic fields and accommodates large conductor sections)

·Conductors & Waterproofing: High-conductivity Copper or Aluminum conductors backed by lightweight Corrugated Aluminum Sheaths for 100% radial moisture defense and rugged impact protection.

·Material Matrix: Designed with high-purity XLPE insulation, the external jackets can be selected independently between premium PE and PVC to fit localized underground burial or tunnel environments.

·Optional Upgrade: Outer protective jackets can be reinforced with tailored semi-conductive layers to simplify routine field sheath voltage testing after installation.

Key Advantages

·Anti-Water-Treeing Insulation: By implementing ultra-clean XLPE and dual-layer (radial and longitudinal) water-blocking elements with a corrugated aluminum barrier, these cables permanently block water vapor ingress, completely eliminating water-tree degradation.

·Zero Inductive Loop Losses: The single-core layout wrapped with non-magnetic aluminum sheath choices completely avoids magnetic loop heat bottlenecks, protecting the system's total transmission ampacity under heavy continuous loads.

·Balanced Mechanical Defense: While maintaining excellent thermal dissipation, the tough corrugated aluminum outer layer serves as a reliable lifetime shield against heavy soil pressure, rodent attacks, and termite penetration.

Application Guideline

·Choose 66kV: Crucial for urban primary substation inputs, wind turbine main lines, and high-load industrial transformer connections where 110kV infrastructure is not required.