Type 63 Mining Cable | 1.9/3.3kV Reeling | TEBAOFLEX

Type 63 Mining Cable: Unyielding Reliability for Heavy Machinery

Operating stackers, shearers, and conveyor systems in underground or open-pit mines places extreme mechanical and electrical demands on power supply lines. Standard industrial cables quickly succumb to abrasion, severe twisting, and chemical exposure in these hazardous areas. The Type 63 mining cable, manufactured to rigorous SANS specifications, is specifically engineered to handle continuous motorized reeling and trailing operations while ensuring maximum safety for personnel and equipment.

Key Engineering Advantages

• Reinforced Torsion Stability: Continuous reeling and unwinding subject cables to intense pulling forces. This cable incorporates an open nylon braid reinforcement (minimum 16 strings) embedded between the inner and outer sheaths. This design acts as a robust strain relief, preventing the internal cores from elongating or twisting during dynamic operations.
• Maximum Electrical Safety in Hazardous Areas: To mitigate the risks of electrical faults in explosive mining environments, each of the three power cores is individually screened with a braid of tinned copper wires. Coupled with unscreened pilot cores laid around a semi-conductive rubber cradle center, this configuration provides superior earth-fault protection.
• Exceptional Environmental Resistance: The inner and outer sheaths are formulated from heavy-duty Polychloroprene Rubber (CR). This thermosetting compound provides excellent flexibility while acting as an impenetrable barrier against mining hazards, including UV radiation, sunlight, ozone, tearing, and industrial oils.
• High-Flexibility Copper Conductors: Manufactured with Class 5 flexible stranded tinned annealed copper, the cable maintains a tight minimum bending radius (6 x Overall Diameter), allowing it to spool smoothly onto cable drums without stressing the internal components.

Technical Specifications

Designed strictly in accordance with SANS 1520-2, SANS 1411-1, and SANS 1411-3 standards, below are the core technical parameters of our 1.9/3.3kV mining cables.

(Engineering Note: Comprehensive dimensional data, including maximum wire diameters, screen cross-sections, and short-circuit ratings [kA for 1s], are available in our technical datasheet. Please contact our engineering team for detailed electrical properties based on your specific cross-section requirements.)

Primary Application Scenarios

With its reinforced sheath and individually screened cores, this cable is purpose-built for movable electric apparatus in demanding sectors:

• Mining & Excavation: Electrically driven machines such as coal shearers, shuttle cars, and continuous miners in hazardous areas.
• Bulk Material Handling: Power supply for heavy stackers, reclaimers, and long-distance conveyor systems.
• Reeling Operations: Suitable for both motorized and spring-driven cable reels, as well as non-reeling trailing applications.
  

  Frequently Asked Questions (Technical & Procurement)

  Q1: Why are the power cores individually screened with tinned copper braids in the Type 63 mining cable?

• A: In hazardous mining environments, mechanical damage to a cable can lead to lethal electrical arcs. By individually screening each power core with a tinned copper braid, any physical penetration or crushing force will cause the phase conductor to short to the grounded screen first. This instantly trips the earth-fault protection relays, cutting the power before a dangerous spark can ignite explosive gases or dust.

  Q2: How does the nylon reinforcing braid improve the cable’s lifespan on motorized reels?

• A: Standard cables often suffer from “corkscrewing” or core snapping when repeatedly wound under high tension. The Type 63 mining cable features an open nylon braid (minimum 16 strings) embedded between the inner and outer CR sheaths. This acts as a structural backbone, absorbing longitudinal tension and preventing torsional stress from reaching the delicate copper conductors inside.

  Q3: Can this cable operate in open-pit mines exposed to severe weather?

• A: Absolutely. The outer sheath is made of Polychloroprene Rubber (CR), which is inherently resistant to harsh environmental factors. It offers excellent resistance to prolonged UV and sunlight exposure, ozone degradation, and wide temperature fluctuations (-25°C to +90°C), making it highly reliable for both underground and open-pit installations.

  Q4: As a manufacturer, can TEBAOFLEX supply Type 63 cables with custom pilot core configurations?

• A: Yes. Because we operate our own advanced manufacturing facilities, we can supply standard configurations (three power cores and one/three pilot cores laid around a rubber center) as well as engineered-to-order variations to match the specific control and monitoring requirements of your mining machinery. Please submit your technical requirements for a direct factory quote.