For 330kV overhead power transmission lines, specialized stringing equipment and tools are essential to manage the stringing of large conductors, often in twin bundles, and maintain the integrity of the line. The primary equipment set for these projects includes high-capacity hydraulic pullers and tensioners.

Summary Table

Equipment/Tool	Specifications & Function
Hydraulic Puller	Max pull 100 kN, bull-wheel 540 mm, Cummins diesel engine, speed up to 5 km/h, tension stringing twin-bundle conductors up to 630 mm²
Hydraulic Tensioner	Max continuous tension 2×50 kN, bull-wheel 1300–1500 mm, suitable for twin/single conductors up to 40 mm diameter
Stringing Blocks	Multi-sheave pulleys guiding conductors, reducing friction and damage
Anti-Twisting Steel Ropes	Up to 21 mm diameter, high tensile strength, resist twisting
Reel Stands	Hold and dispense conductor reels
Conductor Grips & Swivel Joints	Secure conductors, prevent twisting
Pilot Ropes	Lightweight ropes for initial pulling (e.g., Dyneema)

This equipment set is optimized for the tension method of stringing, which is standard for 330kV lines to maintain conductor integrity and safety during installation. The use of high-quality hydraulic systems and robust mechanical components ensures reliable performance even in mountainous or challenging terrains.