Why Copperclad Steel Wire Is The Ideal Anti-Copper-Theft Grounding Cable For Power Systems

Copperclad Steel Wire is a strong, non-rusting, efficient grounding conductor. It is composed of Coppercladding that is permanently bonded to the central steel core of each wire. Copperclad provides the same conductivity and corrosion resistance as copper while maintaining the high strength of steel. Dead Soft Annealed (DSA) Copperclad Steel Wire is very flexible for easy preparation and installation.
 
When compared to solid copper, Copperclad Steel Wire has faster impedance to ground for better protection of lines and equipment plus a higher resistance to thermal expansion failures. It also reduces the fatigue damage caused by more than 10 times that of annealed solid copper.
 
Copperclad Steel Wire is an excellent solution for areas with high rates of copper theft as the amount of copper used in the bonding process is minimal—6% to 10% depending on the conductivity. When Copperclad Steel Wire is used in place of copper, the grounding conductor is far less likely to be stolen. This feature is important not only from an economic standpoint, but also from the standpoint of safety and reliability. Often, the fact that a copper downlead has been removed is not evident until a surge current causes a failure in the system.

Copperclad Steel Wire (CCS Wire) Application Cases

Case 1: Power Grid Substation & Transmission Tower Grounding (Global Utility Projects) Project Background

Large 35kV/110kV/220kV outdoor substations and mountain overhead transmission towers. Local areas suffer severe copper cable theft; pure copper down-leads were frequently stolen, causing lightning surge failures and unplanned power outages. Traditional solid copper wire also cracked easily under long-term soil extrusion and thermal expansion cycles.
Solution Adopted
Dead Soft Annealed Copperclad Steel Wire as main grounding down-leads and grid connecting conductors. Copper coating ratio 8%–10% to match copper conductivity.
Project Outcomes
Anti-theft effect: Minimal copper content makes scrap value negligible, zero theft incidents after 4 years operation.
Mechanical performance: 10x higher fatigue resistance than solid copper; no fracture under thermal expansion & ground settlement stress.
Electrical safety: Lower ground impedance, lightning surges dissipate faster, transformer & switchgear damage rate dropped by over 70%.
Cost benefit: Total project material cost cut by 40% vs full solid copper grounding system.

Case 2: Solar & Wind Renewable Energy Power Stations (Coastal & Inland PV Plants)
Project Background

Large-scale photovoltaic farms and onshore wind turbine bases. Harsh environments: coastal salt fog, rocky mountain soil, strong wind vibration. Pure copper wire is soft, easy to deform and snap during trenching; frequent copper theft at remote unattended solar sites brought huge maintenance losses.
Solution Adopted
DSA copperclad steel wire for PV array grounding, wind turbine tower earthing conductors. High tensile steel core adapts to rocky burial and long-distance overhead laying.
Project Outcomes
Corrosion resistance: Copper cladding prevents electrochemical corrosion under salt & acid soil, stable grounding resistance ≤4Ω all year round.
Construction advantage: DSA soft grade flexible for bending around brackets, installation speed improved by 15% compared with rigid solid copper.
Anti-theft security: Remote unmanned stations no longer face grounding wire theft; annual maintenance repair costs reduced significantly.

From power transmission to renewable energy, communication infrastructure to public transit, CCS wire balances electrical performance, mechanical durability, anti-theft safety and overall project cost. It has become a reliable, long-service-life grounding solution for all kinds of outdoor, remote and harsh-environment earthing projects.