At Ningbo Changshi, we recognize that the safe and efficient repair of transmission lines is critical for maintaining a reliable power grid. Repairing a line while it is still energized—known as "live line" or "hot line" work—is a specialized and hazardous task that requires specific equipment and highly trained personnel. The two primary methods for live line repair are the Hot Stick Method and the Bare Hand Method.

1. The Hot Stick Method: This method uses long, insulated tools (hot sticks) to keep the lineman at a safe distance from the energized conductor. It is a fundamental technique for performing maintenance and repairs, such as replacing insulators or repairing conductors. This method requires a wide array of specialized tools, and we are proud to offer a comprehensive range of overhead tools and accessories that meet the highest safety and performance standards for this work.

2. The Bare Hand Method: This is an advanced technique where a lineman, wearing a conductive suit, is brought into direct contact with the energized conductor. By being at the same electrical potential as the line, the lineman can perform intricate repairs with their hands. This method is often used for high-voltage and extra-high-voltage (EHV/UHV) lines and is typically performed from a helicopter or an insulated bucket truck. Our OHTL wire cable conductor tension stringing equipment plays a crucial role in the initial installation and subsequent repairs for lines where this method might be used, ensuring the conductor is handled and managed precisely to prevent damage.

Both methods are essential for minimizing power outages and are supported by our full suite of overhead transmission line equipment, designed to assist in every phase of power line construction and maintenance. Our equipment ensures that utility crews can perform these critical repairs safely and effectively, ultimately improving grid reliability.