Application Scenarios
Urban power grid upgrades, power supply for large industrial parks, grid integration of renewable energy power stations, and other medium-to-short-distance, high-reliability power transmission scenarios.
Core Requirements
Excellent flame retardancy, compact structure for easy installation, strong corrosion resistance, and high mechanical stress resistance.
Solution
Material Upgrade:
Use flame-retardant cross-linked polyethylene (FL-XLPE) as insulation material. A composite flame-retardant system of magnesium hydroxide/aluminum hydroxide achieves a flame retardancy rating compliant with IEC 60332-3 Class A standards.
Structural Optimization:
Conductor made of high-conductivity copper alloy with a segmental design to increase the fill factor to 93%.
Three-layer co-extruded shielding structure (semiconductor shielding layer + insulation layer + semiconductor shielding layer) ensures uniform electric field distribution.
Metal shielding layer adopts a composite structure of copper wire braiding + galvanized steel tape armor.
Protection System:
Outer sheath made of polyamide-polyurethane composite material, with chemical corrosion resistance meeting ISO 6722 standards.
Addition of a carbon nanotube reinforcement layer to enhance crush resistance (able to withstand ≥20 kN/m pressure).
Implementation Results
After application in a coastal industrial park project:
Cable installation density increased by 35%.
Failure rate reduced to 0.12 instances/100 km·year.
Expected service life extended to 35 years.
Passed electromagnetic compatibility tests per CISPR 22 standards.
Smart Monitoring Expansion Function
Optional distributed temperature sensing (DTS) and partial discharge monitoring modules enable real-time operational status monitoring, achieving a warning accuracy rate of ≥90%.
Note: This solution complies with standards such as GB/T 12706-2020 and IEC 60502-2. Customized designs are available based on specific engineering requirements.
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