The dual electrical and optical nature of OPGW (Optical Ground Wire) necessitates specialized tools and equipment for its safe and efficient stringing. This ensures the mechanical integrity of the metallic components and the delicate optical fibers are preserved. Our comprehensive one-stop supply includes all essential equipment for OPGW installation:

I. Core Stringing Equipment (Adapted for OPGW):

• 1. Hydraulic Tensioners:

  • Key Features: Must be capable of providing precise, continuous, and adjustable tension to prevent the OPGW from touching the ground or encountering obstacles during stringing. They often feature multiple bullwheels with appropriate groove linings (e.g., neoprene or specialized plastic) to protect the OPGW's outer metallic strands and prevent damage to the optical core.

  • Our Offering: Our range of hydraulic tensioners is designed with advanced control systems and non-abrasive bullwheel materials, optimized for the unique characteristics of OPGW, ensuring minimal stress on the cable.

• 2. Hydraulic Pullers:

  • Key Features: Equipped with accurate tension readouts (dynamometers) and often automatic shut-off mechanisms. They need sufficient pulling capacity for the weight and length of the OPGW span.

  • Our Offering: Our pullers feature robust designs and precision controls to maintain the Maximum Allowable Pulling Tension (MAPT) for OPGW, safeguarding the optical fibers within.

• 3. Puller-Tensioner Machines:

  • Key Features: Combined units offering both pulling and tensioning capabilities, providing greater operational flexibility and efficiency, especially for complex or multi-circuit installations.

II. Specialized OPGW-Specific Accessories:

• 1. OPGW Stringing Blocks (Pulleys):

  • Key Features: Critical for guiding the OPGW along the span and around tower structures. They must have large diameter sheaves (typically much larger than for conventional conductors, often 20-30 times the OPGW diameter) to maintain the minimum bending radius of the optical fibers. The grooves must be wide, smooth, and often lined with highly protective, non-abrasive materials (e.g., polyurethane, neoprene) to prevent crushing or abrasion of the OPGW's outer strands.

  • Our Offering: We provide a variety of OPGW-specific stringing blocks and rollers, meticulously designed to protect the cable's delicate optical core during installation.

• 2. Non-Rotating Pulling Ropes:

  • Key Features: Essential to prevent torque and twisting from being transferred to the OPGW cable, which could damage the optical fibers. Typically braided ropes are preferred.

• 3. Anti-Twisting Devices (Swivels):

  • Key Features: Heavy-duty swivels must be inserted between the pulling grip and the pulling rope to absorb any torsional forces, preventing the OPGW from twisting during the pull.

• 4. OPGW Pulling Grips (Stockings/Socks):

  • Key Features: Specifically designed to apply uniform gripping pressure over a larger surface area of the OPGW, minimizing stress concentration on the delicate optical core. They often have internal liners or special weaves.

• 5. Running Boards (for Multiple Wires): If installing multiple wires simultaneously, specialized running boards ensure even tension distribution and prevent wire contact.

III. Safety and Support Equipment:

• 1. Cable Reel Stands/Trailers: Robust, high-capacity stands capable of safely unwinding large and heavy OPGW reels while maintaining controlled back tension.

• 2. Hydraulic Crimping Tools: For securing OPGW dead-end and suspension clamps. These require specific dies matched to the OPGW type.

• 3. Fall Protection Equipment: For personnel working at height on towers.

• 4. Communication Systems: Reliable two-way communication (radios, headsets) between puller/tensioner operators and tower crews.

• 5. Grounding Equipment: Essential for electrical safety, as OPGW is installed on energized or potentially energized structures.

By providing a full spectrum of specialized OPGW installation tools and equipment, from high-precision tensioners and pullers to protective stringing blocks and anti-twisting devices, we ensure that our clients can achieve safe, efficient, and damage-free OPGW deployments worldwide.