Durable Dual Cam Earth Wire Gripper with 10-30KN Rated Load for 11-15mm Wires and Corrosion Resistance

Durable Dual Cam Earth Wire Gripper for Long Term Reliability on Overhead Ground Wire Installations

• Provides Exceptionally Secure and Permanent Termination:​ The core function is to create an unwavering anchor point. The dual-cam mechanism converts linear tension on the wire into radial compressive force. The more tension applied, the tighter the cams grip, creating a failsafe, self-locking connection. This ensures the earth wire remains fixed at its designed tension indefinitely, resisting creep, slippage, and the tremendous forces from wind and ice loading over decades of service.

• Protects Conductor Integrity with a Non-Damaging Grip:​ Traditional bolted clamps can crush or notch individual strands, creating weak points and stress risers. The dual-cam design grips the conductor with uniform pressure over a large surface area. This distributes the clamping force evenly, preventing localized damage to the aluminum strands or the optical fibers within an OPGW, thereby preserving the wire's full mechanical strength and electrical conductivity.

• Engineered to Dampen Aeolian Vibration:​ Overhead wires are susceptible to wind-induced vibrations (aeolian vibration), which can cause fatigue failure at termination points. The design and mass of the dual-cam gripper help to dampen these vibrations. Its secure, distributed grip prevents the micro-movements that lead to fretting and fatigue, significantly extending the service life of the termination and the wire itself, especially in high-wind areas.

• Simplifies Installation and Tensioning Process:​ The gripper is designed for efficient field installation. The earth wire is simply placed between the cams, and as tension is applied using a winch or puller, the cams automatically engage and lock. This streamlines the dead-ending process, reduces installation time, and minimizes the potential for human error compared to complex bolting and torquing procedures of other clamp types.

• Ideal for Sensitive OPGW Cables:​ This gripper is particularly advantageous for terminating OPGW, which contains fragile glass fibers. The uniform, non-crushing grip safeguards the internal fiber optic units from pinching or microbending, which could degrade optical signal performance. It is the recommended termination method by many OPGW manufacturers to ensure their warranty and performance specifications are met.

• Corrosion Resistant for Decades of Service:​ Manufactured from high-strength aluminum alloy or hot-dip galvanized steel, the gripper is built to withstand harsh environmental exposure. It resists corrosion from rain, humidity, and atmospheric pollution, ensuring the clamping force and mechanical integrity are maintained for the lifetime of the transmission line, often exceeding 40 years.

• Maintenance-Free and Long-Lasting Performance:​ Once properly installed and tensioned, the dual-cam gripper requires no further maintenance, adjustment, or re-torquing. Its self-sustaining locking mechanism remains effective indefinitely, providing a true "install and forget" solution that reduces lifecycle costs and inspection burdens for utility operators.

• Ensures System Reliability and Safety:​ A failed earth wire termination can compromise the entire lightning protection system of a transmission line, leading to increased outage risks. The reliability of the dual-cam gripper directly contributes to grid resilience by ensuring the ground wire/OPGW remains securely anchored, providing a continuous, low-impedance path to earth for fault and lightning currents.

• A Standard for High-Voltage Transmission Line Construction:​ The dual-cam gripper is a globally recognized and specified component for dead-ending earth wires and OPGW on major transmission projects. Its use signifies adherence to industry best practices and engineering standards for building robust, long-life power infrastructure.

• A Smart Investment in Infrastructure Longevity:​ While representing a precision component, its cost is minimal compared to the value of the conductor it secures and the critical function it provides. By preventing premature failure and eliminating maintenance, it offers an outstanding return on investment by safeguarding the transmission asset for its full operational lifespan.