The WD-MKYJYRP series flame-retardant control cables with halogen-free and low-smoke characteristics are specially designed for high-risk environments in mines. The specifications of 4×1.5mm² and 6×2.5mm² offer the following features:


I. Structural Design
Conductor: Utilizing oxygen-free copper wire (4×1.5mm² conductor cross-sectional area of 1.5mm², 6×2.5mm² is 2.5mm²), conductivity ≥98%
Insulation: Cross-linked polyethylene (XLPE) material, long-term operating temperature 90°C, short-term耐受 105°C
Shielding Layer: Tin-plated copper wire braid shielding (coverage ≥85%), effectively suppressing electromagnetic interference in the 30MHz-1GHz frequency band.
Sheath: Low-smoke halogen-free flame-retardant polyolefin sheath, oxygen index ≥ 32%, passes GB/T18380.3 vertical flame retardancy test
Section II: Key Performance
Safety Features: Smoke Density ≤60% during combustion (IEC61034 standard), Toxicity Index ≤5 (EN50399 test)
Mechanical Strength: Tensile strength ≥ 10 N/mm² for 6×2.5mm² specification, suitable for wiring for underground mobile equipment.
Environmental Adaptability: Operating temperature -40℃ to 90℃, IP54 rating, resistant to mineral oil immersion (performance unchanged after 168 hours)
Section 3: Application Comparison
Specs Applicable scenarios Transmission Capacity
4×1.5mm² Gas sensors, personnel positioning system signal transmission 450/750V, 10A continuous current
6×2.5mm² Underground hoist, pump station control circuit 450/750V, 16A continuous current