The Complete Guide to Head Boards: Types, Applications, and Selection Tips​

Head boards (also known as pulling heads or conductor pulling boards) are essential tools in overhead power line construction, used to safely guide and distribute conductors during installation. They connect to a steel pulling rope at the front and bundle conductors at the rear, ensuring smooth and controlled deployment of conductors along transmission lines.

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This guide will help you understand the different types of head boards, their applications, and how to choose the right one for your needs.

​​What Are Head Boards?​​

A head board is a specialized rigging device used in power line construction to:

• ​​Connect multiple conductors​​ (bundled) to a single pulling rope.
• ​​Distribute tension evenly​​ across all conductors.
• ​​Prevent twisting or tangling​​ during installation.

​​Common Applications of Head Boards​​

• ​​Transmission line construction​​ (HV & EHV power lines).
• ​​Railway electrification projects​​.
• ​​Renewable energy installations​​ (wind & solar farm grid connections).

​​Types of Head Boards​​

​​1. Head Boards for Two Bundle Conductors (1-to-2 Head Board)​​

• ​​Design:​​ Connects ​​two conductors​​ to one pulling rope.
• ​​Best For:​​ Medium-voltage power lines or smaller transmission projects.
• ​​Advantages:​​
  • Lightweight and easy to maneuver.
  • Cost-effective for standard installations.

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​​2. Head Boards for Three Bundle Conductors (1-to-3 Head Board)​​

• ​​Design:​​ Connects ​​three conductors​​ to one pulling rope.
• ​​Best For:​​ High-voltage (HV) transmission lines.
• ​​Advantages:​​
  • Balanced tension distribution.
  • Reduces installation time for bundled conductors.

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​​3. Head Boards for Four Bundle Conductors (1-to-4 Head Board)​​

• ​​Design:​​ Connects ​​four conductors​​ to one pulling rope.
• ​​Best For:​​ Extra-high-voltage (EHV) and ultra-high-voltage (UHV) lines.
• ​​Advantages:​​
  • Handles large conductor bundles with precision.
  • Minimizes conductor damage during high-tension pulls.

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​​How to Choose the Right Head Board?​​

​​1. Determine the Number of Conductors​​

• ​​2 conductors?​​ → 1-to-2 head board.
• ​​3 conductors?​​ → 1-to-3 head board.
• ​​4 conductors?​​ → 1-to-4 head board.

​​2. Consider Conductor Size & Weight​​

• ​​Larger/heavier conductors​​ require reinforced head boards with higher load capacity.

​​3. Check Compatibility with Pulling Ropes​​

• Ensure the head board’s swivel mechanism matches your rope diameter.

​​4. Evaluate Environmental Conditions​​

• ​​Corrosion-resistant materials​​ (stainless steel, galvanized steel) for coastal/humid regions.
• ​​High-strength alloys​​ for rugged terrain installations.

​​Proper Usage & Maintenance Tips​​

To ensure safe and efficient operation:

• ​​Inspect before use​​ – Check for cracks, worn swivels, or bent components.
• ​​Lubricate moving parts​​ – Prevents jamming during pulls.
• ​​Store in a dry place​​ – Avoid rust and degradation.