Copper Clad Aluminum Round Wire

Saint Ni Lightning Protection Copper Clad Aluminum Round Wire is designed for grounding connections, PE bonding and short-distance transition connections between grounding electrodes and electrical equipment. It combines a high-purity copper outer layer with an aluminum core through metallurgical bonding, providing good conductivity with lower weight and material cost. With conductivity of 62%–65% IACS, it is suitable for photovoltaic, energy storage, wind power, substations, communication base stations and lightning protection systems.

Product Structure

Copper and Aluminum Composite

The Copper Clad Aluminum Round Wire uses a high-purity copper outer layer and aluminum core. The copper surface provides the main conductive contact area, while the aluminum core reduces weight and copper consumption. The metallurgical bonding process helps prevent delamination during normal bending and installation.

Copper Layer Options

Saint Ni Lightning Protection provides 15% and 20% copper-layer options. The 15% version focuses on lightweight construction and cost control, suitable for small energy storage systems and confined equipment spaces. The 20% version provides higher conductivity and current-carrying performance for larger photovoltaic and energy storage projects.

Technical Parameters

*Actual service life depends on installation conditions and the overall grounding system.

Material Comparison

For projects requiring lower transportation weight and controlled material costs, the copper-clad structure offers an alternative to solid copper while maintaining a copper conductive surface.

Grounding Applications

Photovoltaic and Energy Storage

The conductor can be used for PE bonding, equipment grounding and short-distance connections between grounding electrodes and electrical cabinets. Its lightweight structure is particularly suitable for large renewable-energy projects where installation and transportation quantities are significant.

Wind Power and Substations

It can be applied to grounding connections around wind turbine equipment, transformer substations and auxiliary electrical systems where the selected conductor size meets the project design.

Communication and Lightning Protection

The flexible round form is suitable for equipment bonding in communication base stations and confined electrical spaces. It can also be incorporated into lightning protection grounding systems according to the required conductor size and engineering design.

Installation

Connection Procedure

Cut the conductor to the required length and prepare the terminal according to the connection method. After the grounding electrode is installed, connect the exposed section using suitable mechanical connectors. Clean oxidation from the contact surfaces when necessary, tighten the fasteners evenly, and test electrical continuity and grounding resistance after installation.

Installation Notes

Avoid sharp right-angle bends and repeated bending at the same position. When cutting exposes the aluminum core, the section should be properly sealed or protected according to the project specification. Installation depth, connection method and conductor size should follow the applicable grounding and lightning protection design.

Real Project Case

North American High-Frequency Communications Coaxial Cable Upgrade Project

With the rapid growth of residential broadband demand in North America, cable operators needed to upgrade networks from traditional analog systems to high-definition television and high-speed internet based on DOCSIS 3.0/3.1. Transmission frequencies increased to 1 GHz and above, making the skin effect increasingly important. At the same time, the high weight and cost of solid copper conductors created challenges for overhead cable installation and large-scale network upgrades.

Major North American cable manufacturers introduced Copper Clad Aluminum Round Wire conductors into mainstream coaxial cables such as RG-6. A highly concentric aluminum core was combined with a high-purity copper outer layer through metallurgical bonding. At high frequencies, current is concentrated near the conductor surface, allowing the copper layer to provide the main conductive path while the aluminum core reduces weight.

In the 5 MHz–1,000 MHz frequency range, relevant cable configurations achieved attenuation performance broadly comparable with equivalent solid-copper cable designs for the intended applications. Compared with solid copper conductors, the resulting cables reduced weight by approximately 40%–50%, helping lower overhead loading, transportation requirements and installation labor. Reduced copper consumption also helped operators control material costs during large-scale network deployment.

Quality Control

Factory Testing

Saint Ni Lightning Protection performs inspection of conductivity, dimensions, copper-layer bonding, surface condition and corrosion resistance during production. Products can be supplied with relevant test reports according to project requirements.

Certifications

Saint Ni Lightning Protection operates under the GB/T19001-2016 / ISO9001:2015 Quality Management System and GB/T24001-2016 / ISO14001:2015 Environmental Management System certifications, supporting consistent production and quality control for domestic and overseas projects.

Supply Capability

Saint Ni Lightning Protection operates its own production line and supports standard specifications, customized diameters, copper-layer ratios, lengths and coil configurations. Sample orders are available for product evaluation, while bulk projects can receive factory pricing and scheduled production. Grounding electrodes, clamps, resistance-reducing agents and exothermic welding materials can also be supplied as supporting products.

FAQ

Q1: How should it be stored?

Store it in a dry and ventilated area and avoid prolonged exposure to rain and direct sunlight. Protective wrapping can be used during long-term storage.

Q2: Will grounding resistance increase over time?

Grounding resistance depends on the complete grounding system, soil conditions, connection quality and corrosion environment. Proper installation and periodic testing are recommended.

Q3: How should the cut end be treated?

If cutting exposes the aluminum core, the section should be sealed or otherwise protected according to the installation requirements to prevent prolonged exposure to moisture and air.

Q4: Can it be bent?

Yes. It can be bent for installation, but sharp bends and repeated bending at the same location should be avoided. The specified minimum bending radius should be followed.

Q5: Can it be used for lightning current?

Copper Clad Aluminum Round Wire can be incorporated into a properly designed lightning protection and grounding system. The conductor size and copper-layer specification should be selected according to the expected current and applicable engineering requirements.

Q6: Do you accept sample orders?

Yes. Saint Ni Lightning Protection supports small-batch sample orders before bulk purchasing.

Q7: What is the normal lead time?

Standard products can normally be delivered in approximately one week, subject to order quantity and customization requirements.

Return and Exchange Policy

Products should be inspected for specifications, quantity and appearance upon receipt. For transportation damage, incorrect shipment or missing products, photographic evidence should be provided within 24 hours for replacement or exchange.

Returns caused by incorrect selection or engineering changes are accepted only for unused and intact products, with applicable logistics and packaging costs deducted. Products that have been cut, drilled, installed or damaged through improper handling are generally not eligible for return or exchange. Returned products should retain their original packaging, accessories and certificates.

Saint Ni Lightning Protection Supply Assurance

Saint Ni Lightning Protection supplies copper-clad grounding conductors for photovoltaic, energy storage, wind power, substations, communication and lightning protection projects. With different conductor sizes and copper-layer options, the product can be configured according to project requirements while reducing transportation weight and copper consumption.

Standard products are available in coils, with customized specifications and bulk supply supported. Saint Ni Lightning Protection also provides related grounding accessories and test documentation, helping EPC contractors, electrical contractors, lightning protection installers and distributors source grounding materials from one supplier.