Manufacturer's flexible graphite grounding body non-metallic grounding wire BJN-D40 superconducting corrosion-resistant graphite grounding strip

Description :

　　Introduction to Superconducting Corrosion Resistant Graphite Grounding Strip Products:

　　1. Material: Made of high-purity graphite flakes (99.99%) that have been expanded at high temperatures and combined with a certain ratio of glass fiber and binder, rolled, thermoplastic, twisted, and woven into a flexible graphite woven fabric.

　　2. Performance:

　　1) Appearance with semi metallic luster

　　2) Weight 0.29 kg/m;

　　3) No impact on the environment;

　　4) Anti bending slope<70 ° C?;

　　5) Acid and alkali corrosion rate<0.1%;

　　3. Technical requirements:

　　1) Appearance: The twisted body of the grounding electrode graphite wire is uniform, the surface is smooth, and there is no damage;

　　2) Solid state resistivity: ρ≤ 0.25m Ω· m;

　　3) Under soil resistivity ρ≤ 300 Ω. m, the power frequency grounding resistance of the grounding electrode is R ≤ 5 Ω;

　　4) Surge current tolerance: 8/20 μ s, 100kA, 18 times without counterattack △ R ≤ 1.0 Ω;

　　5) Power frequency current tolerance: 10A 1min △ R ≤ 1.0 Ω;

　　5) Tensile strength: ≥ 120kgf 10s △ R ≤ 1.0 Ω;

　　6) High temperature performance: 100 ℃, 1h △ R ≤ 1.0 Ω;

　　7) Low temperature performance: -40 ℃, 1h △ R ≤ 1.0 Ω;

　　8) Acid alkali corrosion rate (weight ratio): ≤ 0.1%

　　Advantages of graphite grounding products:

　　1. Improving the corrosion problem of metal grounding materials: All components of the product have good corrosion resistance and can withstand corrosion from various soils such as saline soils in Inner Mongolia, Xinjiang, Gansu, and Ningxia, with a lifespan of not less than 30 years. Being able to withstand the corrosion of resistance reducing agents, antifreeze agents, green fertilizers, and insecticides has expanded the application scope of resistance reducing technology.

　　2. The flexible graphite grounding series products have a large cross-section and rough surface, forming fine pores that can tightly adhere to the soil. They can creep together with the soil without detachment, creating an air interface. In the case of seasonal soil cracking, meltwater settlement, freezing, and frozen soil melting, the contact resistance between the grounding electrode and the soil remains stable at a low value.

　　3. Good dynamic and thermal stability under high current impact, low temperature rise to avoid soil sintering;

　　4. The product is made of non-magnetic material, and its effective current dissipation length is much longer than that of steel grounding bodies under high-frequency impact of power frequency and lightning strikes. It can reduce the power frequency grounding resistance of large power plants and substations by multiple times, making it the choice for reducing the grounding resistance of large power plants and substations.

　　5. Has good engineering properties:

　　1) Weight is 1/10 of the metal grounding electrode, lightweight and easy to transport;

　　2) Can avoid rocks and trees, with a small excavation area and no damage to greenery;

　　3) Can be backfilled with mud and compacted;

　　4) The grounding electrode is crimped and interconnected, without the need for welding or on-site requirements such as power welding machines.

　　6. Has good technical and economic feasibility:

　　1) Exemption from regular testing of grounding resistance required by safety regulations, avoiding repetitive investment in grounding modification, saving manpower and material resources, and reducing life cycle cost (LCC);

　　2) The grounding system remains in a dormant state for a long time and only functions when lightning strikes or short circuits occur. Lightning strikes or short circuits are extremely rare events and do not waste precious steel and copper materials;

　　3) No recycling value, can avoid theft;

　　4) Replace metal grounding materials, reduce emissions and haze, and achieve good social benefits.

AfterSalesService :

• Flexible graphite grounding body