LSZH Mining Cable is specially designed for high-risk environments underground in mines due to its low smoke, halogen-free, flame-retardant, and corrosion-resistant characteristics, ensuring safe and reliable operation under conditions such as fire, humidity, and mechanical impact. The following are its typical application scenarios, applicable models, and usage requirements.
1. Underground power supply system
Application devices:
Large mobile equipment such as coal mining machines, tunneling machines, scraper conveyors, and belt conveyors.
The main power supply line from the underground substation to the distribution box.
Cable model:
MYJV (mining cross-linked polyethylene insulated cable, low smoke halogen-free model with WDZ prefix needs to be selected).
MYPJ (shielded cable with reinforced core, suitable for frequent mobile devices).
Requirements:
The voltage level is usually 0.6/1kV or 3.6/6kV, and the cross-sectional area needs to be selected according to the load current (such as 95mm ², 150mm ²).
It is necessary to obtain Class A flame retardant certification (GB/T 18380) to ensure fire safety during long-distance installation.
2. Mine lighting and emergency system
Application Scenario:
Underground roadway lighting, escape indication system, emergency light power supply.
Explosion proof lighting circuit for gas extraction station.
Cable model:
WDZ-DJYJP (low smoke halogen-free shielded control cable, used for signal transmission).
NH-MYJV (fire-resistant cable, used to maintain power supply in case of fire).
Key features:
Low smoke transmittance ≥ 60% (EN 50268), ensuring visible escape routes in case of fire.
Fire resistance performance (such as 950 ℃/180min, GB/T 19216).
3. Monitoring and Communication System
Application devices:
Underground video surveillance, gas monitoring sensors, communication base stations (such as mining telephones, Wi Fi).
Signal transmission of automation control systems (such as PLC control lines).
Cable model:
MHYV (Mining Communication Cable with Polyethylene Insulation and Flame Retardant Sheath).
WDZ-RYYP (low smoke halogen-free shielded flexible cable, resistant to electromagnetic interference).
Special requirements:
The shielding layer (copper wire weaving or aluminum foil) prevents signal interference.
Must comply with the bending and moisture resistance requirements of MT 818 standard.
4. Mobile devices and temporary power supply
Application Scenario:
Power supply for temporary mining equipment, mobile drainage pumps, and emergency rescue equipment.
Short term high load equipment such as underground welding machines and charging piles.
Cable model:
MYPTJ (Mining Mobile Metal Shielded Cable with Reinforced Steel Wire).
WDZ-KYJY (low smoke halogen-free control cable, high flexibility).
Design points:
High tensile strength (such as steel wire armor) to prevent damage from dragging.
The sheath is resistant to oil and acid alkali (such as polyurethane TPU sheath).
5. Upgrading and transportation system
Application devices:
Power supply and control circuits for mine hoists, winches, and electric locomotives.
Fixed cable laying in inclined or vertical shafts.
Cable model:
MYJV22 (steel tape armored cable with strong compressive performance).
WDZ-YJY23 (halogen-free armored cable, suitable for vertical laying).
Special requirements:
Impact testing (such as GB/T 2951) is required to prevent damage from falling objects.
High flexibility structures (such as optimizing the pitch of conductor twisting) should be selected for long-term bending scenarios.
6. Special high-risk areas
Scenario example:
High gas mines, flammable and explosive areas (such as goaf).
High temperature or corrosive environments (such as pyrite mines and salt spray mines).
Cable requirements:
Explosion proof certification (such as Ex d I Mb, in compliance with GB 3836).
High temperature resistance (such as 125 ℃ XLPE insulation).
7. Selection precautions
Environmental adaptability:
Choose radial waterproof structure (such as waterproof tape+aluminum-plastic composite sheath) for humid environments.
Dust proof sealed joints are required in areas with high levels of dust.
Security level:
Priority should be given to WDZ-MYJV (Class A flame retardant) for the main line.
Choose MYP (with shielding and flexible sheath) for mobile devices.
Compliance:
Must have Coal Safety Certification (MA) and Mining Product Safety Mark (KC).
The core value of low smoke halogen-free cables for mining lies in safety and reliability. When selecting, it is necessary to consider factors such as mechanical stress, fire rating, and signal interference in specific scenarios. For critical underground systems such as emergency lighting or gas monitoring, it is essential to select cables that meet the highest flame retardant standards (Class A) and have passed all performance tests.