MKVVP2-22-450/750V-10x1.0 Mine-Use Flame Retardant Control Cable Comprehensive Analysis
I. Model Definition and Structure


Model breakdown


Coal mine cables
Control Cable
VV: PVC Insulation and Sheath
P2: Copper tape shield layer
22: Double-layer steel strip armor
10×1.0: 10-core conductor, each strand with a cross-sectional area of 1.0mm².


Structure


Conductor: Class 5 soft copper stranded conductor (multiple fine copper wires), conductivity ≥ 99.9%, suitable for fixed installation.


Insulation Layer: Made of PVC material, with a temperature range of -20℃ to 70℃, and insulation resistance ≥ 60MΩ·km (at 20℃).


Shielding Layer: Copper tape wrapping shielding (coverage ≥85%), electromagnetic interference resistance.


Sheath layer: Double-layer galvanized steel strip wrapping, compressive strength ≥ 3000N/100mm.


Sheath: Flame-retardant PVC (Oxygen Index ≥ 28), thickness ≥ 1.5mm.


II. Key Performance Parameters


Electrical Performance: Rated Voltage 450/750V, withstand voltage ≥2000V/1 minute without breakdown under industrial frequency, conductor DC resistance ≤18.1Ω/km (20℃).


Flame Retardant Rating: Meets Coal Mine Safety Certification (MA mark), passes MT 818-2009 standard, bundle combustion self-extinguishing time ≤ 30 seconds.


Mechanical Properties: Static bending radius ≥ 12 times the outer diameter, dynamic bending radius ≥ 20 times, protection grade IP54.


Section 3: Application Scenarios and Advantages


Typical Applications


Underground Coal Mine Monitoring System: Transmits gas, ventilation, etc. sensor signals (e.g., 4-20mA, RS-485).
Control Loop: Connects the PLC to underground equipment (pumps, fans, etc.).


Safety Advantages


The sleeve is flame-retardant, halogen-free, and emits low smoke (burn-through light transmission rate ≥60%), reducing secondary fire hazards.
Suitable for high humidity and dust environments; armored structure for mechanical damage resistance.
IV. Installation and Maintenance Guidelines


Laying Requirements: Environmental temperature ≥ -10°C, avoid direct sunlight; when fixed laying, the bending radius should be ≥ 12 times the outer diameter.


Grounding Standard: Single-point grounding of shielding layer (ground resistance ≤ 4Ω)


Inspection and Maintenance: Test insulation resistance every six months (≥60MΩ·km at 20℃), inspect sheath wear and shielding integrity.


V. Comparative Analysis of Similar Products
MKVV22: Unshielded, with lower mechanical protection and cost.
MKVVP2-22: Copper tape shielded + steel tape armored, excellent anti-interference and mechanical properties, suitable for strong electromagnetic field interference areas.