Many people are not really familiar with graphite grounding. It is obvious that it can be widely used in various fields such as power, communication, railway, construction, mining, chemical industry, national defense, various factories, warehouses, etc. It can reduce grounding resistance and ensure long-term stability of grounding effect in work grounding, protective grounding, anti-interference grounding, lightning protection grounding, and anti-static grounding facilities. So below, the editor of graphite grounding will introduce in detail the various types of graphite grounding modules:

1、 Construction method of graphite grounding module?

a、 The low resistance grounding module can be vertically or horizontally buried, with a burial depth of not less than 0.6 meters, generally 0.8-1.0 meters;

b、 When several modules are embedded in parallel, the distance between modules should not be less than 4 meters. If conditions do not allow, it can be appropriately reduced, and at the same time, the value of the module utilization coefficient when calculating module usage should be reduced.

c、 When the poles of the low resistance grounding module are connected in parallel or to the ground wire, welding must be performed. Require welding with the same metal material to ensure the reliability of the connection. The welding length should not be less than 00 meters. No virtual soldering or solder leakage is allowed.

d、 The welding slag should be removed from the twisted joint, and a layer of asphalt or anti-corrosion paint should be applied to prevent core corrosion.

e、 Fine grained soil should be used as filling material for pit backfilling, and construction waste such as broken bricks should not be used as backfill material. Backfilling should be carried out in layers. After filling 30cm of material, add an appropriate amount of water and compact it. Fill again, add water and compact until it is level with the surface. When compacting, attention should be paid to ensuring that the module is in close contact with the backfill soil and the formation, without damaging the module itself. After backfilling, water it again to keep it moist.

f、 After sufficient moisture absorption, measure the power frequency grounding resistance with a ground resistance meter. If the expected target is not achieved, analyze the cause and take remedial measures.

g、 In cold regions, modules should be buried below the permafrost layer.

2、 What are the characteristics of graphite grounding modules?

a、 Super strong water absorption and moisturizing ability, adaptable to extremely harsh dry environments, stable grounding effect, not affected by seasons.

b、 The surface adopts a special texture, which makes the grounding area larger than ordinary grounding materials, and the resistance reduction effect is more obvious.

c、 All material components are non-toxic and pollution-free, and will not cause pollution to the surrounding environment.

d、 Anti corrosion characteristics: The metal electrode wrapped in graphite grounding module isolates the contact between oxygen and moisture in the soil and the grounding electrode, greatly reducing the corrosion rate of the metal electrode. Especially when used in saline alkali soil, its effect is more obvious. After excavation tests, a steel gray passivation film is formed on the surface of the graphite grounding body, and there is no sign of corrosion on the grounding body. The passivation film further protects the grounding body from corrosion. According to customer requirements, the metal electrodes in the middle of the module can be replaced with corrosion-resistant and highly conductive metals such as copper to ensure their service life.

e、 Using a 100T hydraulic system for processing, it has strong pressure resistance and is suitable for long-distance transportation.

f、 The product has been certified by a national authoritative department.

3、 What is the function of graphite grounding module?

The grounding module is a grounding body mainly composed of non-metallic materials, which is composed of non-metallic minerals and electrolytic substances with good conductivity and stability. Its special shape increases the scattering area of the grounding body itself, and the grounding resistance value is low. At the same time, it also has excellent moisture absorption and retention capabilities, as well as the ability to improve the conductivity of the surrounding soil, resulting in a continuous decrease in grounding resistance and a tendency towards long-term stability. The main roles it plays in daily lightning protection grounding are as follows:

a、 Reduce ground potential counterattack: The special material of graphite grounding module creates a relatively gentle low resistance area between the metal and soil with a huge difference in resistivity. When a large current surges, it can reduce the transient potential gradient of the grounding body and grounding wire, lower the step voltage and contact voltage, and reduce the probability of ground potential counterattack. That is to say, graphite material is between the metal grounding body and the soil, playing a bridging role.

b、 Stable grounding resistance: The graphite grounding module will not experience fluctuating electrical resistivity due to dry or humid land. The grounding module itself has a strong ability to absorb moisture and keep the surrounding soil moist, ensuring that the grounding module effectively conducts electricity; At the same time, the conductivity of the conductive material in the grounding body is not affected by seasonal changes such as dry humidity, high and low temperatures, thus providing stable grounding resistance. The use of grounding modules almost ensures that the surrounding soil resistivity values remain constant.

c、 Reducing contact resistance: The graphite material of the graphite grounding module has a similar physical structure to the soil. The grounding module can be buried underground and integrated with the soil, making the effective contact area between the graphite grounding body and the soil much larger than that of the metal grounding body, increasing the effective dissipation area of the grounding body and greatly reducing the contact resistance between the grounding body and the soil. Therefore, it can significantly improve grounding efficiency and reduce the land area occupied by the grounding grid.

The above are various information about graphite grounding modules provided by the editor for graphite grounding. We hope it will be helpful to those in need! If you want to learn more about related information, please continue to follow this website. New news will be pushed to everyone every day.