WDZN-YJY 8.7/15kV MV Power Cable for Industrial Electrical Transmission

WDZN-YJY 8.7/15kV is a high-end, low-smoke, halogen-free, fire-resistant medium-voltage power cable designed for mission-critical, high-density, and fire-safety-critical projects worldwide. This cable features a high-purity oxygen-free copper conductor, a three-layer co-extruded semi-conductive shielding structure, high-performance cross-linked polyethylene (XLPE) insulation, and a low-smoke, halogen-free (LSZH) flame-retardant outer sheath, integrating fire resistance, flame retardancy, non-toxicity, low smoke, and halogen-free properties.

Specifically designed for 15kV medium-voltage distribution networks, it maintains stable dielectric strength, ultra-low partial discharge levels, and excellent resistance to water tree aging under rated continuous operation conditions. Its N-class fire-resistant structure allows for sustained power transmission under flame irradiation, ensuring emergency power supply to critical loads. Utilizing a completely environmentally friendly halogen-free formula, it releases no corrosive gases or dense smoke during combustion, fully complying with international fire safety codes and green building standards. As an unarmored medium-voltage solution, it is widely recognized by EPC contractors, electrical engineers and institutional buyers worldwide, and is suitable for enclosed spaces, public infrastructure and high-standard industrial power systems, taking into account operational safety, environmental compliance and long-term grid reliability.

• Rated Voltage: 8.7/15kV (Uo/U), suitable for standard 15kV grounded medium-voltage systems
• Conductor: Class 2 tightly stranded bare copper conductor, high conductivity, low resistance, stable connection performance
• Insulation: Cross-linked polyethylene (XLPE), high dielectric strength, low dielectric loss, resistant to water dendrite degradation
• Shielding Structure: Inner semi-conductive shielding layer + XLPE insulation layer + outer semi-conductive shielding layer, uniform electric field distribution
• Outer Sheath: Low smoke halogen-free (LSZH) flame-retardant compound, non-toxic, corrosion-resistant, and highly weather-resistant
• Thermal Rating: Continuous operating temperature 90℃, short-circuit withstand temperature 250℃ (5 seconds)
• Fire Resistance: WDZN N-class fire resistant + flame retardant, conforming to IEC 60331 and IEC 60332 standards
• Minimum Bending Radius: 10 times the cable outer diameter, facilitating flexible layout and installation
• Standards: IEC 60502-2, GB/T 12706.3
• Global Certifications: CE, RoHS, ISO 9001, International Fire Safety Certification

• Prioritizing high-security and emergency power supply projects:
  • Rail transit, subways, tunnels, underground utility corridors, and fully enclosed municipal facilities
  • Large hospitals, schools, high-rise building complexes, airports, and densely populated public buildings
  • Data centers, intelligent buildings, fire emergency circuits, and critical life support power systems
  • Petrochemical, new energy, pharmaceutical, and industrial parks with high environmental and fire risks
  • Key urban power distribution, government facilities, and disaster relief infrastructure projects
  • Indoor cable trenches, enclosed conduits, and protective indoor installations without mechanical damage risk

• Dual Fire Safety Performance: Combining N-class fire resistance and low-smoke halogen-free flame retardant properties, it maintains uninterrupted power supply in the event of a fire, prevents flame spread, and avoids secondary hazards caused by toxic fumes and corrosive gases damaging electrical equipment.
• Reliable Medium-Voltage Electrical Stability: Precision triple-extrusion shielding technology suppresses partial discharge and electric field concentration. XLPE insulation effectively delays long-term thermal aging, adapts to fluctuating loads and continuous full-load operation, and reduces the probability of medium-voltage line failures.
• Environmentally Friendly and Meets Global Green Standards: The halogen-free and heavy metal-free material formula complies with EU environmental regulations and global sustainable building requirements. Low smoke emissions improve on-site visibility, facilitate emergency evacuation, and make it ideal for green and low-carbon projects.
• Optimized Laying Adaptability: The lightweight, unarmored structure offers flexible bending performance, a smaller outer diameter, and higher space utilization. It simplifies conduit and indoor wiring, reducing labor costs and overall construction costs for large projects.
• Excellent environmental durability: The special LSZH sheath has excellent moisture resistance, anti-aging properties and temperature cycling adaptability, and is stable in high humidity, enclosed and complex indoor operating environments, thus extending service life.

• Laying Conditions Limitations
  • The unarmored design is only suitable for protected installation environments; it is not suitable for direct burial, areas subject to heavy pressure, impact, or frequent rodent activity. For harsh mechanical environments, please select a custom armored version.
• Fire Rating Differentiation
  • WDZN cables offer both fire resistance and flame retardancy, unlike standard WDZ flame-retardant cables. Engineers must select the appropriate fire rating according to emergency power supply design specifications.
• Matching Accessories
  • LSZH fire-resistant cables require compatible halogen-free fire-resistant terminals, connectors, and accessories to maintain their overall fire resistance and prevent system performance degradation.
• Regional Code Compatibility
  • Compliant with international IEC fire standards and local building codes. We offer customized fire ratings to meet project acceptance, bidding, and third-party acceptance requirements.

• Complete Global Certifications:We provide a full set of CE, RoHS, fire resistance test reports, and factory certification documents. All data is traceable, supporting international customs clearance, EPC bidding, and cross-border project delivery.
• High-Standard Raw Materials and Quality Control: We use high-purity copper and imported low-smoke halogen-free (LSZH) flame-retardant compounds. Fully automated production, 100% partial discharge testing, high-voltage withstand voltage testing, and fire resistance performance sampling inspection ensure consistent batch quality.
• Professional B2B Customization: We can customize conductor cross-sections, core counts, special fire resistance ratings, and sheath performance according to bidding technical terms and specific regional project requirements.
• Factory Direct Sales, Stable Delivery: No middlemen markups, making our prices more competitive for bulk orders and medium-to-large-scale infrastructure projects. Export-grade wooden barrel packaging ensures safe long-distance transportation.
• Professional Technical Support: Our professional electrical team provides medium-voltage cable selection, current carrying capacity calculation, fire protection system matching, and on-site installation guidance, solving core technical challenges for engineers and procurement teams worldwide.