What are the best practices for pulling single-conductor TECK cable?

2025-08-16

Proper installation requires careful planning and specialized equipment to manage the cable's unique properties.

  1. Check Minimum Bending Radius: Always consult the cable manufacturer's data sheet for the recommended minimum bending radius. This is typically 7 times the cable's overall diameter for a static bend and 12 times the diameter when pulled under tension. Using wide-radius sheaves and rollers is crucial to avoid sharp bends.

  2. Pull in a Trefoil Formation: To manage magnetic induction, the three phase conductors should be pulled together in a tight trefoil (or cloverleaf) formation. This configuration minimizes the magnetic field and is essential for preventing dangerous heating.

  3. Use Anti-Twist Swivels: The interlocking armor can be susceptible to twisting during a pull. It is essential to use a pulling grip with an anti-twist Swivel between the pulling rope and the cable. This ensures any rotation in the rope is not transferred to the cable, preventing damage to the armor.

  4. Control Pulling Tension: The maximum pulling tension for TECK cable must be carefully managed to avoid stretching or damaging the conductors or armor. Our hydraulic cable pullers come equipped with real-time tension monitoring to ensure the tension never exceeds the manufacturer's specified limit.

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