5×2.5WD-MKYJYR-450/750V Mining Control Cable (Made in Tianjin) Technical Analysis
I. Product Features


Model Definition


WD: Halogen-Free, Low-Smoke
MKYJYR: Mining Use Cross-linked Polyethylene Insulated Flexible Cable
5x2.5: 5-core conductor, with each strand having a cross-sectional area of 2.5mm².
450/750V: Rated voltage class.


Materials and Structure


Conductor: Oxygen-free copper braided soft conductor (Class 5), conductivity ≥99.9%, excellent flexibility.


Insulation: Cross-linked Polyethylene (XLPE), temperature resistance -40℃ to 90℃, short-circuit temperature 250℃.


Sheath: Low-smoke halogen-free flame-retardant polyolefin, oxygen index ≥28, smoke opacity during combustion ≥60%.


II. Key Performance Parameters
Electrical Performance: Frequency withstand voltage ≥ 2000V for 5 minutes without breakdown, insulation resistance ≥ 500MΩ·km (at 20℃).
Flame Retardant Grade: Meets the MT 818.14 mining standard, with a self-extinguishing time for bundle combustion test ≤ 30 seconds.
Mechanical properties: Dynamic bending radius ≥ 20 times the outer diameter, tensile strength ≥ 1500N.
Section 3: Application Scenarios
Mine Automation: Connects PLCs, sensors (such as gas monitoring, ventilation systems), supports 4-20mA signal transmission.
Mobile Devices: Suitable for frequent bending applications, such as coal mining machines, conveyor control circuits.
Section 4: Tianjin Manufacturer Information
Key Manufacturers: Tianjin Cable General Factory Branch, Rubber and Plastic Cable Factory, etc., offering MA products.
Price Reference: Approximately 1.8~3.6 yuan/meter (specifics to be confirmed in the contract).
5. Installation and Maintenance
Installation Requirements: Environmental temperature ≥ -10°C; avoid parallel spacing with power cables less than 300mm.
Maintenance Suggestion: Regularly test insulation resistance (typically ≥10MΩ/km), ensure sealing at junctions.


This cable boasts high flexibility, halogen-free environmental protection, and strong anti-interference capabilities, making it the preferred solution for mining control systems in the Tianjin region.