
What are the best practices for pulling single-conductor TECK cable?
2025-08-16Proper installation requires careful planning and specialized equipment to manage the cable's unique properties.
-
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.
-
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.
-
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.
-
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.