Ningbo Changshi Electric Power Machinery Manufacturing Limited, a leading China-based manufacturer and exporter of overhead line stringing and cable laying equipment, is proud to announce the release of its flagship 120kN High-Capacity Hydraulic Conductor Tensioner.

Engineered specifically to address the rigorous requirements of 500kV, 750kV, and ±800kV Ultra-High Voltage (UHV) overhead transmission projects, this new machine delivers unprecedented precision in constant-tension stringing for large-diameter AAC, ACSR, and aluminum alloy bundled conductors.

Key Features & Technical Highlights

• Precision Closed-Loop Hydraulic System: Powered by a high-efficiency diesel engine and closed-circuit hydraulic system, the 120kN unit maintains preset back-tension automatically across variable stringing speeds, eliminating line sag spikes and conductor vibration.

• Wear-Resistant Nylon Sector Bullwheels: Large-diameter multi-groove bullwheels lined with heat-dispersing, high-density MC nylon segments protect delicate conductor surfaces against surface scratching or mechanical deformation.

• Integrated Safety & Emergency Braking: Equipped with spring-applied hydraulically released (SAHR) negative safety brakes, the unit engages instant braking during pressure loss or emergency shutdown, safeguarding field crews and tower structures.

• Digital Load & Speed Display: A real-time digital display monitors tension force, stringing speed, and distance, allowing operators full operational visibility during complex multi-bundle pulling sequences.

"With global power grids expanding long-distance UHV corridors to integrate mega-scale solar and wind generation, line contractors need machinery that combines massive force with surgical control," stated the engineering team at Ningbo Changshi. "Our 120kN Hydraulic Tensioner delivers exactly that."

For detailed technical datasheets, CAD drawings, or quotation inquiries, visit our official product catalogue at www.ohtlstringingequipment.com.