2520.5 MHSYV-5 Mining Communication Cable is a category 5 shielded communication cable specifically designed for harsh environments such as coal mines. Its technical specifications and application scenarios are as follows:


I. Model and Structure Analysis


Model Identification:


MH: Coal Mine Communication Cable Marking
SYV: Combination structure of polyethylene insulated (Y), poly sheath (V), and woven shield (S).
5: Five transmission standards supported, including Gigabit Ethernet.
2520.5: 25 pairs of twisted wires (each pair with 2 cores), single-core conductor diameter 0.5mm (cross-sectional area approximately 0.196mm²).


Material Composition:


Conductor: High-purity oxygen-free copper stranded wire (purity ≥), multi-strand design for enhanced flexibility.
Shielding Layer: Aluminum foil wrap (coverage ≥) + tin-plated copper wire braid (coverage ≥ 85%), shielding efficiency ≥ 60dB
Sheath: Flame-retardant PVC outer sheath (oxygen index ≥ 32%), passes MT 386 vertical burn test.
II. Key Performance Parameters
Parameter item Technical Specifications Standard Basis
Transmission Bandwidth 100MHz (supports 1000Mbps Ethernet) IEEE 802.3ab‌
Decay characteristics ≤0.2dB/m（100MHz，20℃） GB/T 13849‌
Flame Retardant Properties Self-extinguishing time ≤ 30 seconds (MT 386 standard) MT 386‌
Operating Temperature -40°C to 70°C GB/T 7594.2‌
Bend Radius ≥8 times outer diameter (dynamic laying) YD/T 1019-2013‌
Section 3: Application Scenarios
Underground Communication System: Connects explosion-proof telephones and dispatching exchanges, supporting voice communication (impedance 100Ω±15%).
Safety Monitoring Network: Transmits gas concentration, temperature and humidity sensor data (error rate ≤ 10⁻⁶).
Industrial Control Link: Signal interaction between PLCs and coal mining machines, conveyors (supports RS485/CAN protocols)
Video: Underground 1080P video transmission (attenuation ≤ 21.3dB per 100 meters).
IV. Certification and Laying Requirements
Mandatory Certification: Coal Safety Certification (MA Mark), MT 386 Flame Retardant Certification, GB/T 13849 Communication Standard.
Laying Specifications: Direct burial depth ≥1.2m, Traction tension ≤80% of short-term tensile strength (≤1500N).