Overhead conductor greases are specialized protective compounds applied to bare overhead power lines (such as ACSR, OPGW, HTLS and ground wires) to prevent corrosion, reduce wear, and extend service life. Their applications cover the entire lifecycle of conductors, from manufacturing to long-term operation.
- Corrosion Protection in Harsh Environments
Coastal & marine areas
Resist salt spray, salt fog, and moisture to protect steel cores and aluminum strands from rust and oxidation.
Industrial & chemical zones
Guard against acid rain, sulfur dioxide, hydrogen chloride, and industrial dust that cause pitting and corrosion.
High-altitude & cold regions
Maintain protection under strong UV radiation, extreme cold, and large temperature swings.
Rural & humid areas
Prevent long-term atmospheric corrosion and water penetration into conductor strands. - Reduction of Aeolian Vibration & Wear Damage
Lubricate between individual aluminum and steel strands.
Reduce friction and fretting wear caused by wind-induced vibration and conductor galloping.
Lower the risk of fatigue cracking and strand breakage, especially in long-span lines. - Waterproofing & Sealing
Form a continuous, hydrophobic film to block rain, dew, and condensation.
Prevent water from entering the interior of stranded conductors, which is a major cause of steel-core rusting. - Use During Conductor Manufacturing
Applied as a stranding lubricant during production to reduce friction and improve surface quality.
Used for factory pre-coating (hot-applied or cold-applied) to ensure uniform coverage before delivery. - Storage & Transportation Protection
Provide temporary anti-corrosion protection for finished conductors during storage and long-distance transport.
Prevent surface oxidation and rust before stringing. - Construction & Installation Support
Reduce friction between conductors and pulleys, tensioners, and clamps during stringing.
Protect conductor surfaces from mechanical scratches and abrasion during installation. - Extension of Service Life & Reduction of Maintenance
Extend conductor service life from 20–25 years to 30–40 years or more.
Reduce the frequency of inspections, maintenance, and early replacement.
Lower overall operation and maintenance costs for power grids. - Compatibility with Line Components
Safe for use with aluminum, steel, hardware fittings, and composite insulators.
Does not cause corrosion or degradation of connected parts.
In summary, overhead conductor greases are widely applied for long-term anti-corrosion, anti-wear, waterproofing, and life extension of overhead transmission and distribution lines in all kinds of outdoor environments.
