2. The actual land area, the grounding is evenly distributed, and the ground marking lines are ready; each is separated from the ground, try not to be less than 4m. If in actual use, the resin sand production line cannot meet the spacing requirements, the calculation is: Calculation The coefficient value to be used;
3. The grounding wire of the grounding module installed underground shall not be made of aluminum, such as aluminum wire, aluminum busbar, etc.;
4. Based on dose calculation and estimation, obtain the total amount of grounding modules based on a processing deviation of 5% or 10%;
5. Draw the location of the excavation trench size. The slot may employ an aspect of this embodiment and may be made by digging a hole to add the connecting slot. The required depth of the groove is not less than 0.5m, preferably 0.8 to 1.5m. Regarding the principle of its actual depth crossing, please refer to the following: For soil, a larger burial depth crossing is necessary for higher resistivity; when the groundwater level decreases, the burial depth crossing will be larger;
6. After digging the trench, lay the resistance reducer layer at the bottom of the trench, then place the grounding module on top of the resistance reducer and press it firmly;
7. The connection point of each electrical equipment must be connected to the ground trunk through a separate ground wire, and the ground wire of the ground module must not be connected in series with multiple devices, nor connected to one ground trunk;
8. Use conductors such as galvanized flat steel or copper (recommended size not less than 3×30mm) to connect the modules. It is recommended to connect the magnetic pole cores between the modules by welding. If the magnetic field is not allowed, please ground it. Modules can be riveted. Either way, twice as much surface coating (green or waxy) is required to prevent corrosion. Likewise, the bus is connected to a ground observation hole;
9. The connection between the grounding main line of the grounding module and the grounding module should be welded, and lap welding should be used during welding;
10. If the soil excavated on site is sand, stone, yellow mud, etc., it is recommended to replace the backfill with other soil with higher conductivity to improve the resistance effect. During the backfilling process, appropriate amounts of water should be injected into layers and compacted.
