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AdSS Fiber Optic Cable Reel Distribution Principles

ADSS fiber optic cable reels should be distributed using the stationary reel method, with careful attention to alignment, tension, and minimum bending radius to prevent damage during aerial installation.

Key Principles for Reel Distribution

1. Stationary Reel Method The recommended method for distributing ADSS cables is the stationary reel method, where the cable reel (pay-off) is positioned at one end of the pull and the take-up reel at the other end. A pull line is threaded through travelers along the route, and the ADSS cable is attached using a woven wire pulling eye. The cable is then pulled under controlled tension to avoid exceeding the maximum pulling tension and to maintain the minimum bending radius specified for the cable . 2. Reel Placement and Alignment

  • The pay-off reel must be directly in line with the first traveler and positioned at a distance of four times the height of the traveler from the structure (4:1 distance-to-height ratio).
  • It is recommended to have at least three structures before the first large angle change to ensure smooth cable deployment .
  • Proper alignment prevents uneven tension, which can damage the cable or hardware. 3. Tension Management
  • Maximum pulling tension during installation should not exceed the cable's rated limit (typically up to 600 lbF or 2700 N for aerial installations).
  • Span tension is calculated to achieve a 1% installation sag and to accommodate wind and ice loads.
  • Uneven tension, especially in the moving reel method, can cause kinking, crushing, or exceeding the minimum bend radius . 4. Cable Handling and Protection
  • Use a figure-eight configuration when removing cable from the reel to prevent twisting and kinking. Loops should be 1.5–2.4 meters in diameter and about 4.5 meters in length.
  • Avoid placing the cable directly on pavement or surfaces without protection; use barricades or cones to prevent damage from vehicles or pedestrians .
  • Maintain the minimum bend radius during installation (typically 20 times the cable diameter) and after installation (10 times the diameter) to prevent optical performance degradation . 5. Hardware Considerations
  • Tangent clamps are used for spans less than 350 feet with angle changes under 15°.
  • Armor Grip Suspension (AGS) is used for longer spans or angle changes up to 30°.
  • Dead-ends are installed at each end of the cable and at angle changes of 30° or more to secure the cable to structures . 6. Safety Precautions
  • Follow all power utility and OSHA safety practices, especially when working near high-voltage lines.
  • Use protective gloves, safety harnesses, and inspect poles for hazards before climbing .
  • Ensure grounding of travelers and maintain safe distances from live conductors when installing near transmission lines . By adhering to these principles, ADSS fiber optic cables can be deployed efficiently and safely, maintaining their structural integrity and optical performance throughout the installation process.
AdSS Fiber Optic Cable Reel Distribution Principles - E-Motional Optics & Connectivity

AdSS Fiber Optic Cable Reel Distribution Principles - E-Motional Optics & Connectivity [PDF]

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