In the world of overhead transmission line (OHTL) construction, the conductors are changing. To meet rising electricity demand and integrate smart grid technology, utilities are replacing old ACSR conductors with advanced HTLS (High-Temperature Low-Sag) and ACCC (Aluminum Conductor Composite Core) cables. Simultaneously, OPGW (Optical Ground Wire) is being strung to provide vital communication and data links.

This is great for the grid, but it presents a major new challenge for contractors: these new conductors are extremely easy to damage, and repairs are incredibly expensive.

Unlike tough, steel-core ACSR, the composite cores of ACCC conductors can be fractured by improper bending or compression. The delicate fiber optics in OPGW can be ruined by excessive tension or a single sharp edge. Using the wrong equipment isn't just a risk; it's a guarantee of failure.

The Solution: Precision Equipment for Sensitive Cables As a leading manufacturer of OHTL stringing equipment, we engineer our tools specifically for these modern challenges. Here is our expert advice for a damage-free pull:

1. Use the Right Stringing Blocks: This is the most critical step. Standard steel-sheave blocks will destroy an ACCC conductor. You must use blocks with a large diameter and a nylon or neoprene-lined sheave. Our specialized blocks provide a soft, wide groove that cradles the conductor, preventing any scratching, compression, or crushing of the sensitive core.

2. Demand Smooth, Controllable Tension: Abrupt jerks or "chatter" from a puller-Tensioner machine can send shock loads down the line, fracturing the composite core. Our hydraulic puller-Tensioners are designed for this. They offer infinitely variable, smooth tension control, allowing operators to maintain a precise, steady pull from start to finish.

3. Monitor Everything: For OPGW, staying within the exact tension specifications is non-negotiable. Our pullers can be equipped with advanced digital monitoring and data logging, ensuring you have a complete record that the cable was installed exactly to the engineer's specifications.

Don't risk your project's reputation and budget on outdated tools. As your one-stop supplier, Ningbo Changshi provides the complete, specialized OHTL stringing equipment package designed for the next generation of conductors.