Medium Voltage Cable - China

21/35kV Medium Voltage Cable

Copper core/aluminum core XLPE insulated PVC/PE sheathed power cables, suitable for fixed installations in 21/35kV, 18/30kV (36/35kV) and below distribution networks or industrial equipment.

The 21/35kV XLPE Power Cable (also covering 18/30kV systems) is engineered for medium-to-high voltage power transmission.

It is widely utilized in urban grid expansions, industrial substations, renewable energy integration, and large-scale infrastructure networks.

Utilizing a triple-extruded dry curing process for its XLPE (cross-linked polyethylene) insulation, this Low Voltage Power Cable provides exceptional dielectric strength and thermal stability.

It is available in both copper and aluminum conductor configurations, offering flexible cost-to-performance optimization for global engineering projects.

Conductor: Number of conductors 1 or 3 - The conductors shall comply with the requirement given in IEC.

Insulation: XLPE (Cross-linked Polyethylene) according to IEC.

Sheath: PVC (Polyaluminium Chloride) according to IEC.

Metal Screen: Copper Tape Screen.

Characteristics:

Conductor Temperature: Maximum conductor temperature in normal use: 90°C.

Max.

Short-circuit Temperature: Maximum shall not exceed 250°C (5s Max.

Duration).

Installation Temperature: Ambient temperature under installation shall not be below 0°C.

Minimum Bending Radius: For Three Core Cable: ≥15D.

For Single Core Cable: ≥20D.

(D = Diameter of cable)

Key Electrical & Engineering Advantages:

- High Dielectric Strength: The XLPE insulation is specifically designed to resist electrical breakdown under continuous high-voltage stress.

- Superior Thermal Stability: Supports continuous operating temperatures up to 90°C and short-circuit temperatures up to 250°C, making it ideal for heavy-load transmission.

- Low Transmission Loss: Optimized conductor stranding reduces electrical resistance, ensuring efficient energy delivery over long distances.

- Strong Mechanical Protection: Available with specialized armoring to withstand soil pressure, external impacts, and the stresses of underground installation.

Application Scenarios:

- Utility Power Grids: Urban power transmission and substation interconnection.

- Industrial Power: High-load supply for factories, refineries, and mining operations.

- Renewable Energy: Main export cables for wind farms and solar power plants.

- Infrastructure: Power systems for railways, airports, and tunnels.

- Underground Systems: Direct burial or duct installations for high-voltage urban circuits.

Built for Reliable Bulk Supply & Power Project Execution:

- Stable High-Voltage Performance: Specifically tested to maintain consistent dielectric integrity under long-term high-voltage load.

- Compliance with Global Standards: Manufactured in strict accordance with IEC 60502-2 and IEC 60840, ensuring suitability for international EPC tenders.

- Conductor Flexibility: Copper - Ideal for high conductivity and minimum energy loss.

Aluminum - A cost-efficient solution for long-distance, high-volume project requirements.

- Engineering-Grade Customization: Options for armored/unarmored structures, specific metallic screen thicknesses, and specialized LSZH or fire-resistant outer sheaths.

- Designed for Longevity: Optimized for a service life of 20-30 years within utility and industrial networks.

Why Choose Us as Your High Voltage Cable Supplier:

- Industrial-Scale Manufacturing: Equipped to handle the high-capacity output required by national grids and major infrastructure projects.

- Comprehensive Project Support: We provide technical datasheets, cable sizing calculations, and detailed installation guidance.

- Rigorous Quality Control: Every cable undergoes high-voltage withstand testing, partial discharge testing, and insulation aging verification before shipment.

- Expert Logistics: Using heavy-duty reinforced drums and project-specific labeling to ensure safe delivery and easy on-site management.

Company Contact:

• Posted By: Hebei Ningao Cable Co., Ltd

• Phone: 13932198627

• Address: Dongwang Town Industrial Park, Ningjin County, Xingtai City, Hebei Province, China, Xingtai , hebei , China

• Email:

• Business Description: Ninggao Electric Cables Manufacturer specializes in producing high-quality electrical cables designed for industrial, commercial, and residential applications.
  
  With advanced manufacturing technology, Ninggao ensures that each cable meets global safety and performance standards, offering exceptional durability and reliability.