Pulling heavy or large-diameter bundled conductors in complex overhead transmission line projects presents amplified challenges that require highly specialized equipment and meticulous execution:

• Immense Weight & Tension: Bundled conductors (e.g., 4, 6, or even 8 sub-conductors per phase) can be extremely heavy. This translates to enormous pulling forces and back-tensions, demanding:

  • High-Capacity Pullers & Tensioners: Our equipment is designed with the robust power, durable components, and high pulling/tensioning capacities (e.g., 20 tons or more) required to handle these loads safely.

  • Reinforced Structures: Towers and temporary supports must withstand the increased dynamic loads during the pull.

• Maintaining Bundle Geometry: The sub-conductors within a bundle must maintain their precise spacing and orientation to control corona effects, impedance, and wind loading. This requires:

  • Specialized Running Boards: Designed to connect all sub-conductors simultaneously, preventing twisting and ensuring even tension distribution. Integrated, high-capacity swivels are crucial to prevent rotational forces from transmitting to the bundle.

  • Bundle Spacers/Dampers: Installed after pulling, but the stringing process must accommodate their future placement.

• Increased Friction: The greater surface area and weight of bundled conductors increase friction within stringing blocks and at angle structures. This necessitates:

  • Large-Diameter, Multi-Groove Stringing Blocks: With exceptionally smooth, durable, and often non-metallic liners (for sensitive conductors) to minimize friction and protect each sub-conductor individually.

  • Strategic Block Placement: More careful placement to reduce severe bending angles.

• Longer Pull Sections: To maximize efficiency, bundled conductor pulls often span many kilometers, requiring pullers and tensioners with high rope storage capacity and extended operational endurance.

• Communication & Coordination: With greater distances and multiple crews involved, flawless, real-time communication between the puller operator, tensioner operator, and all intermediate ground crews is absolutely critical for safety and precision.

• Navigating Obstacles: Pulling multiple, heavy conductors over obstacles like rivers or highways adds layers of complexity, requiring enhanced overhead protection and highly coordinated traffic management.

Our company specializes in providing the heavy-duty, high-precision tension stringing equipment and bespoke accessories specifically engineered to meet the rigorous demands of complex bundled conductor pulling operations, ensuring safety, efficiency, and the long-term integrity of vital transmission lines.