Laying 220 kV EHV cables presents significant challenges due to their large size, weight, and the high electrical stresses they endure. The main challenges are:

• Cable Damage: The cable's insulation is sensitive to mechanical stress. A single kink or over-bending can lead to a catastrophic failure.

• Pulling Tension: The immense weight of a 220 kV cable can cause pulling tension to exceed safe limits, leading to conductor stretching and damage.

• Thermal Management: The high current carrying capacity generates significant heat, which must be effectively dissipated by the surrounding soil.

To address these, we use hydraulic pulling equipment with real-time tension monitoring, precision-engineered underground-Cable-Laying-Equipment-and-Tools.html target='_blank'>cable rollers to maintain the correct bending radius, and a carefully designed trench with specialized thermal backfill material.