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Copper Bonded Earthing Rods Unthreaded

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Copper Bonded Earthing Rod Unthreaded

Copper Bonded Earthing Rods Unthreaded– Overview

A Copper Bonded Earthing Rods Unthreaded is a solid steel core electrode with a permanent molecularly bonded copper coating, designed to provide a low-resistance path to earth in grounding and lightning protection systems. Unlike threaded rods, the unthreaded type has a smooth surface, making it ideal for applications where couplers are not required, or a single-length rod is sufficient.

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Key Features

  • Material: High tensile strength low-carbon steel core.

  • Copper Bonding: Electrolytic copper molecularly bonded to steel (thickness typically 250–300 microns).

  • Design: Smooth, unthreaded surface with a pointed driving end.

  • Function: Dissipates fault current or lightning surge safely into the ground.

  • Corrosion Resistance: Copper coating resists rust and extends service life.

Common Applications

  • Electrical Earthing – Domestic, commercial, and industrial installations.

  • Lightning Protection Systems – As grounding electrodes for down conductors.

  • Telecommunication Towers – Prevents equipment damage from voltage surges.

  • Renewable Energy Systems – Solar and wind farm grounding.

Technical Specifications

Parameter Specification
Core Material Low-carbon high-tensile steel (minimum tensile strength 600 N/mm²)
Copper Coating 99.9% pure electrolytic copper molecularly bonded to steel
Copper Thickness 250–300 microns (as per IEC & UL requirements)
Diameter Options 12 mm, 14 mm, 16 mm, 20 mm
Length Options 1.2 m, 1.5 m, 2.0 m, 2.4 m, 3.0 m
Design Type Unthreaded, smooth surface with pointed driving end
Driving End Cone-shaped or chamfered tip for easy soil penetration
Electrical Conductivity ≥ 97% IACS (International Annealed Copper Standard)
Corrosion Resistance High – suitable for all soil conditions including high moisture and salinity
Mechanical Strength High bending and impact resistance
Standards Compliance IEC 62561-2, BS EN 50164-2, UL 467
Applications Electrical earthing, lightning protection, telecom grounding, renewable energy grounding

Variants of Clamp Cross Clamp

  • Solid Single-Length Rods – For standard installations.

  • Heavy-Duty Copper Bonding – Thicker copper layer for aggressive soil environments.

  • Special Tip Designs – Hardened steel tips for rocky terrain.

Copper Bonded Earthing Rod (Unthreaded) – Installation Guide

1. Tools & Materials Required

  • Copper Bonded Earthing Rod (Unthreaded)

  • Driving head / driving stud (to protect rod tip during installation)

  • Sledgehammer or mechanical rod driver (jackhammer with adaptor)

  • Earth conductor and approved earthing clamp

  • Measuring tape

  • Earth resistance tester

  • PPE (safety helmet, gloves, boots, eye protection)

2. Site Preparation

  1. Location Selection – Choose a location away from underground services, fuel lines, and building foundations.

  2. Soil Check – Prefer moist soil for better conductivity; avoid rocky, dry areas unless necessary.

  3. Mark Installation Point – Clearly mark the spot where the rod will be driven.

3. Installation Procedure

  1. Position the Rod – Place the rod vertically over the chosen spot.

  2. Attach Driving Head – Fit the driving head onto the top of the rod to prevent mushrooming or deformation during hammering.

  3. Drive the Rod –

    • Manual Method: Strike the driving head with a sledgehammer until the rod is fully driven.

    • Mechanical Method: Use a powered rod driver for faster penetration in hard soils.

  4. Achieve Target Depth – Drive the rod to the required depth (commonly 2–3 meters) or until desired resistance is achieved.

  5. Remove Driving Head – Once at depth, remove the driving head carefully.

4. Electrical Connection

  1. Clean Rod Surface – Remove any dirt or debris from the rod where the clamp will be fitted.

  2. Attach Earthing Clamp – Use a copper or bimetallic clamp to connect the earth conductor to the rod securely.

  3. Tighten Connection – Ensure firm mechanical grip and good electrical contact.

5. Testing

  • Measure earth resistance using a 3-point or 4-point earth tester.

  • Target resistance should be within local standards (often < 1–5 ohms).

  • Record test results for compliance documentation.

6. Safety Notes

  • Always confirm there are no buried utilities before driving.

  • Use PPE to avoid injuries from flying debris or vibration.

  • In rocky terrain, pre-drill a pilot hole if necessary.

Advantages

  • High corrosion resistance and long service life.

  • Superior conductivity due to copper surface.

  • Strong steel core allows deep driving without bending.

  • No threads — ideal for single-section installations and cost efficiency.

Other Information

✔️ Sample Time: Available in 5-10 days for different items.

✔️ Drawing Format: CAD / PDF / DWG / IGS / STEP.

✔️ Packaging: Standard package, Carton box or Pallet, As per customized specifications

✔️ Shipping: DHL, FEDEX, UPS and By Sea or as per client’s requirements.

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