Mobile optical cable laying and hanging

Aerial optical cables can be installed using fixed-pulley traction or cable tray methods, with careful planning, proper equipment, and safety measures to ensure fiber integrity. Methods of Aerial Cable LayingFixed-Pulley Traction Method This method involves setting up a cable tray and fixing a large pulley on the pole at the start and end points. Small guide pulleys are installed every 10–20 meters along the suspension line.

A traction rope is threaded through these pulleys, and the optical cable is connected to the rope for pulling. Manual traction: Workers gradually release the cable from the tray while manually tightening the traction rope. Auxiliary personnel may assist at every two poles, and communication via telephones is maintained between the cable laying, receiving, and traction points to ensure safety.

Long cable trays may be laid in two halves, forming an "8" shape on the ground for the first half before continuing with the second half ( ). Mechanical traction: A mechanical traction machine is placed at the cable retrieval end, with an auxiliary machine at the laying end. The cable is gradually released from the tray using machinery, reducing manual effort and improving efficiency ( ).

Cable Tray Moving and Releasing Method In this method, the cable is gradually released from a moving tray along the aerial route. This approach is often used for long-haul installations and helps maintain proper tension and alignment ( ).

Types of Aerial Fiber Cables

Catenary wire style: Loose tube cables lashed to a messenger wire.

All-

Dielectric Self-

Supporting (ADSS) cables: Designed to support their own weight without additional support, often in a figure-8 configuration for long-haul networks ( ).

Safety and Planning Considerations

Route planning: Survey the route, check pole strength, and ensure sufficient clearance from power lines. Obtain necessary permits and coordinate with local authorities ( ). Cable handling: Avoid exceeding the cable's maximum pulling tension, minimum bend radius, or crush load to prevent fiber damage ( ).

Personal safety: Workers must use harnesses, safety belts, and maintain 3-point contact when climbing poles or ladders. Protective clothing, gloves, and hard hats are essential ( ). Environmental protection: Use UV-resistant polyethylene jackets for outdoor cables to prevent degradation from sunlight ( ).

Advantages of Aerial Installation

Faster and less costly than underground deployment, especially in rocky or uneven terrain. Easier to maintain and upgrade, with minimal disruption to the landscape.

ADS

S cables can be installed near power lines, allowing pole sharing and reducing costs ( ).

Key Tips

Always follow the manufacturer's installation guidelines for tension, bend radius, and handling. Plan splice points and slack storage locations in advance. Use communication between all team members during cable pulling to prevent accidents and fiber damage ( ).

By combining proper planning, the right cable type, and adherence to safety and handling protocols, mobile optical cable laying and hanging can be performed efficiently and safely.