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In production, the general softness of the selection is better, the carbon content of 0.10% -0.30% in high-quality low-carbon steel, using a special process to evenly cover the high conductivity of copper to the round surface, the thickness of 0.25-0.5mm, the Technology can effectively slow down the oxidation of grounding rods in the ground, the thread is the use of roller screw thread groove processing, maintaining a close connection between the steel and copper, ensuring high strength, with excellent electrical grounding performance.
Copper Clad Steel grounding electrode has been widely used in electric power, petrochemical, transportation, civil construction, large-scale machinery and equipment grounding system, with a long service life, economy, excellent electrical conductivity characteristics.
Product Features
1) Copper Clad Steel grounding unique manufacturing process: production of cold-rolled hot drawing process to achieve metallurgical fusion between copper and steel. Drawing can be used like a single metal as any pull, does not appear out of line, warping, cracking phenomenon.
2) Copper Clad Steel grounding electrode corrosion is superior: composite interface with high temperature welding, no residue, combined with surface corrosion does not occur; surface of the copper layer thick (average thickness greater than 0.4mm) corrosion resistance, life long (over 30 years), reduce maintenance labor intensity.
3) Copper Clad Steel grounding Better electrical performance: surface copper material excellent electrical properties, lends itself to the resistance value is far lower than conventional materials.
4) extensive safety and reliability: The product is suitable for different soil moisture, changes in construction under ground temperature, PH value and resistivity.
5) Copper Clad Steel grounding connection is secure: Using a dedicated connection pipe or the use of fusion welding, joint firm, good stability.
6) Copper Clad Steel grounding rods quick and easy installation: complete accessories, easy to install, can effectively improve the speed of construction.
7) Improve grounding Depth: Copper Clad Steel grounding rods special connection transmission mode, it can be 35 meters deep underground, in order to meet the low-resistance requirements for special occasions.
8) Low construction costs: the use of copper grounding rods traditionally copper-clad steel ground rods contrast, construction methods grounding straps, cost dropped significantly.
Standard parameters
General technical parameters of copper-clad steel grounding, the degree of binding copper layer: The adhesion test, in addition to the tiger's mouth occlusion clamp jaws are now peel off the outer layer of copper, and the rest copper steel with good peel phenomenon does not appear. You can connect to length of grounding, grounding 30 meters deep underground can not be affected by any soil resistivity and ground resistance of climatic conditions; copper layer thickness 0.25mm; copper layer plasticity: grounding pole bent 30 degrees, Angular no cracks phenomenon inside and outside edge; tensile strength ≥600N / ㎜²; flatness error ≤ 1mm / m. Copper Clad Steel grounding surface was 99.9% oxygen-free copper; copper layer thickness are: 0.127mm, 0.25mm, 0.33mm, 0.50mm, 1.0mm and other specifications; copper layer adhesion experiment lasted temperature of 300 ℃ more than one hour after quenching, the copper layer does not peel off; the corrosion resistance of the ground electrode placed in the experimental test concentration of 10% nitric acid solution to soak over 90 hours, corrosion weight loss of not more than 15%; the resistivity is below 0.059Ωmm, to meet the low-resistance requirements for special occasions.
Role filler
Copper clad steel pole grounding system consists of advanced ceramic alloy compounds, copper alloy electrode appearance is to ensure maximum conductivity and long service life, and with the two types of internal and external filler. Conductor sustained release filler is buried After grounding resistance will gradually decline, reaching a steady value within six months to a year, laying process can be sustained for up to 30 years.
Copper Clad Steel grounding electrode is made of electrolytic copper purity of 99.9% to the steel core made of molecules cover. Copper grounding pole, using high-quality low-carbon steel Q235, after a large necking cold drawing process, to overcome the casing coating method poor adhesion of the defect, and enhance the tensile strength, toughness and because keeping the outer plating of 99.9% pure copper, copper layer thickness 0.254mm, 0.33mm, 0.5mm, 1.0mm and other options available to customers
Design Basis
Using less material and lower installation costs to complete the most effective grounding device, the design should be based on the development of the following aspects.
The ground on the functions can be divided into:
① protective earthing - protect humans and animals against electric shock;
② grounding - ground rods and electronic devices are connected, in order to achieve equal potential, ensure the device is working properly;
③ lightning protection and grounding - the powerful impact of current gas reservoir is released into the ground.
Through in-depth grounding, grounding minimum available ground to obtain the desired resistance value. If you are using a short (6 meters or shorter than 6 meters) grounding get the same resistance value, the number of multi-ground electrode and a large construction area, it is obvious to spend several times.
Ground structure
Main bar: grounding high quality cold-drawn steel yuan, with special equipment outside casting copper (thickness of 0.3 ~ 0.5MM, copper content of 99.9%), in order to ensure that it has excellent electrical conductivity and mechanical strength, the product has excellent anti-corrosion.
Connecting pipe: You can use the connection between the rod and the rod copper pipe connection, with the best preservative effect. Close contact between the rod and the rod, the driving force of a direct role in the grounding drill into the ground or driven into the ground using a ground pole. Divided threaded connection and non-threaded connections.