Copper bonded steel earth tape conductor supplied by Sunlightweld has been applied in China’s leading metro & rail projects including ChongQing, ShenZhen, WuHan, ZhengZhou, JiNan, NanChang, HeFei, etc,..
Copper Coated Steel Supplied by Sunlightweld is Manufactured Through a Continuous Electro-plating Process of Copper Over Steel Core, Resulting in a Permanent Molecular Bond Between The Two Materials.
Copper bonded steel earth tape conductor (also known as copper coated steel flat conductor)is a bimetallic composite material composed of an internal steel core and an external copper layer. It not only has high mechanical properties of steel, but also has good electrical conductivity and corrosion resistance of copper. Sunlightweld supplies different types of copper bonded steel—earth rod/ round wire/ tape coil and stranded types, to meet the needs of different projects demands.
Copper Coated/Bonded Steel Tape Conductors Details(Feature/Advantages) Supplied by Sunlight Grounding
Technical parameter of Sunlightweld copper bonded/clad steel earth tapes conductor
1.Tensile strength:350-770Mpa(for vertical grounding)；60-510MPa（for horizontal grounding）
2.Copper thickness: 0.254mm-0.8mm(customized available)
3. Plasticity of copper layer: When the product is bent at 90° for three times continuously, there's no crack in the inner and outer edge copper layer.
4. Copper layer bondability
When the product is placed between the clamp or the vise jaws, the spacing is smaller than the diameter of the sample steel core(W=d-0.1), hammer the end of the sample, cut off enough copper layer, fully expose the steel core, the exfoliated copper layer is allowed at the jaws of vise, however, the remaining part of rod, exfoliated copper and steel is not allowed to be visible to the naked eye.
5. Electrical-corrosion performance
Simulated fault current releasing, after the electrical-corrosion cycle test, the final resistance value growth rate does not exceed 50% of the initial resistance value, Moreover, the resistance growth rate of each test step does not exceed 15% during the testing process, And the surface of the copper bonded steel sample is completed, without cracks, pits, bubbling defects after the test.
Through a large number of copper bonded/clad steel grounding rod applications in projects, such as power plants, substations, petrochemicals,etc., we found that copper clad steel earth rods cannot meet the large grounding area and the long distance grounding requirement. The length of general copper bonded/clad steel earth rod is less than 6 meters, when laying a large area horizontally, it needs to be connected every 6 meters, the huge number of welding joints will cost a lot of man-hour, which will increase the project time cost and material cost. According to the weakness, Sunlight Company have developed copper bonded steel round wire and copper bonded steel earth tapes conductor with a length of 100 meters in coil.
