Square fired grounding module
Title: Square Fired Grounding Module, Fired Grounding Module, High-Carbon Graphite Grounding Electrode
Keywords: Fired graphite grounding module, physical low-resistance grounding module, high-conductivity grounding module, computer room lightning protection grounding, power plant lightning protection grounding, substation lightning protection grounding, electrified railway lightning protection grounding, telecommunications base station grounding, mobile communication base station grounding, microwave relay station grounding, ground satellite receiving station grounding, radar station lightning protection grounding, valuable precision instrument lightning protection grounding, postal and telecommunications program-controlled equipment lightning protection grounding, radio and television equipment lightning protection grounding, electronic medical equipment lightning protection grounding, high-rise building lightning protection grounding, scenic spot and ancient building lightning protection grounding, tall memorial tower lightning protection grounding, oil pipeline lightning protection grounding, oil and gas tank lightning protection grounding, flammable and explosive material warehouse lightning protection grounding
Temperature: -40℃~80℃
Buried Depth: >0.8m
Module Spacing: <3m
Relatives at Room Temperature: ≤4.0Ω.M
Power Frequency Grounding Resistance: 1.5Ω
Product Certification: ISO9001:2000
Protection Level: IP64
Explosion-proof Function: None
Application: Lightning protection grounding
Usage Environment: Any environment
The sintered grounding electrode is a physical low-resistance grounding module. Its graphite material has excellent soil affinity, is non-corrosive, non-degradable, non-polluting, and non-toxic. It exhibits good resistance stability in humid, water-immersed, or deep frozen soil environments, has a long service life, and is suitable for grounding projects in multi-point construction, complex terrain, and water-scarce areas. In areas with high soil resistivity, it can effectively reduce the grounding resistance of the grounding grid. It is also convenient to transport, easy to install, and maintenance-free.
The module uses non-metallic conductive materials as the main body, with low conductivity and stable performance. It does not degrade when buried in soil, does not contain corrosive ions, has a long service life, and is safe and environmentally friendly. This product boasts a unique manufacturing process, high compressive strength, and patent certification, with leading comprehensive performance indicators in China.
The grounding module has a significantly larger diameter than ordinary steel grounding electrodes, allowing for faster conduction of fault current to the ground under the same fault current conditions. Furthermore, its multi-channel distributed arrangement on the grounding electrode effectively reduces high-current surges in lightning-prone areas. The larger size compared to traditional grounding electrodes also increases the grounding area with the soil, reducing contact resistance.
After being buried in the soil, the module maintains close contact with the soil, significantly expanding the current dissipation area and effectively reducing grounding resistance. The module’s unique moisture-retaining and hygroscopic properties keep the surrounding soil with low resistivity, further improving the conductivity of the grounding electrode.
Technical Parameters:
1. Bulk density not less than 1.68 g/cn³.
2. Resistivity not greater than 8.5 μΩ·m, equivalent to a good metallic conductor (stainless steel, pure copper, etc.), which is beneficial for constructing a high-quality grounding grid.
3. Ash content not exceeding 0.20%
4. Compressive strength not less than 30MPa, allowing for thorough compaction during grounding grid construction and improving the discharge of large surge currents!
5. Flexural strength not less than 13.5MPa, suitable for grounding grid construction.
6. Elastic modulus not exceeding 10.0CPa.
7. Thermal conductivity (100℃) not less than 90W/(m·K)
8. Coefficient of thermal expansion (room temperature to 600℃) not greater than 2.8 × 10⁻⁸/℃
9. Excellent water absorption and retention properties. Due to its firing process, the module is filled with numerous pores, resulting in excellent water affinity and water retention, making it particularly suitable for grounding in dry soils.
10. Pollution-free and does not alter the surrounding soil, adaptable to many special and demanding environments.
11. Packed in cardboard or wooden crates, saving on module transportation costs.
12. Long lifespan, not easily broken, with a service life of up to 50 years.
Usage Instructions:
1. Grounding modules can be installed vertically or horizontally, depending on site conditions. The burial depth is generally 0.8m-1m or less (the burial depth depends on site conditions);
2. It is recommended that the spacing between grounding modules be no less than 0.8m (the radius of ion diffusion is 1m-3m, depending on site geological conditions);
3. When the electrode cores of the grounding modules are connected in parallel or to the ground wire, electric welding or exothermic welding must be used. The welding length should be three times the width of the connecting wire;
4. When the internal electrode core of the grounding module is made of hot-dip galvanized steel, the weld joint should be cleaned of weld slag and evenly coated with anti-corrosion conductive paint or wrapped with grounding resistance reducing agent;
5. When backfilling the grounding module, an appropriate amount of water should be added and compacted in layers to ensure close contact with the earth. Measure the grounding resistance after it has fully absorbed moisture.
Product Features:
1. This module uses a stable non-metallic conductor material as its conductive medium, and its conductivity is unaffected by the season.
2. It can absorb moisture and maintain effective contact with the soil, resulting in low grounding resistance.
3. In areas with high soil resistivity, it can effectively reduce the grounding resistance of the grounding grid.
4. It can withstand high power frequency and impulse current surges, with stable resistance.
5. It is corrosion-resistant, non-toxic, has a service life of up to 30 years, and is easy to install.
Applications:
1. Working grounding, safety grounding, and lightning protection grounding for power plants, substations, switch stations, explosives depots, high-voltage transmission lines, electrified railways, telecommunications and mobile communication base stations, microwave relay stations, ground satellite receiving stations, radar stations, etc.
2. Working grounding and protective grounding for valuable precision instruments, computer room equipment, postal and telecommunications program-controlled equipment, broadcasting and television equipment, electronic medical equipment, etc.
3. Lightning protection grounding for various high-rise buildings and tall structures, scenic spots and ancient buildings, tall memorial towers, etc.
4. Lightning protection grounding for oil pipelines and oil and gas tanks, and warehouses for flammable and explosive materials.