Due to the fact that the soil at the construction site is mainly backfill soil, the construction plan is calculated based on a soil resistivity of 200 ohms (actual soil resistivity is subject to on-site measurements). The square grounding module adopts a 500mm * 400mm * 60mm and is constructed in a flat buried manner. As the resistance requirement is reduced to 1 ohm, approximately 18 grounding modules and 60 packs of resistance reducing agent are needed. Below, the editor of graphite based flexible grounding body will lead you to understand it together.

2. Excavate 18 pits at intervals of 3m on the construction site, with a depth of 600mm. Then dig trenches of no less than 30cm between the pits to facilitate connection with flat steel. The editor of the graphite based flexible grounding body reminds everyone that according to the actual site of this project, the specific location should be set in the open space on the west side of the computer room.

3. Place the square grounding module vertically into the pit, and then weld each module together with 40mm * 4mm galvanized flat steel, leaving connecting poles for easy connection with the connecting device. Connect the 40mm * 4mm galvanized flat steel to the grounding box outside the building, and connect it to the 25M2 copper wire from the machine room inside the grounding box. Connect the 25M2 copper wire indoors to the 40mm * 4mm copper bar, and apply anti rust paint or asphalt to each welding point.

4. The editor of graphite based flexible grounding body reminds everyone to pour the resistance reducing agent into the pit first, so as to wrap all the grounding electrodes under the grounding module. Then pour the resistance reducing agent evenly into the groove, wrap the flat steel connecting each grounding module in the groove, and form a wrapping body with a depth of not less than 200mm. To facilitate the formation of the wrapping body, it is recommended to use long wooden boards on both sides of the groove to block it, and then pour the resistance reducing agent into the groove, which is relatively easy to form the wrapping body.

5. fter the above construction is completed, fill the trenches and pits with fine soil, and the height of the backfill should be slightly higher than the ground.

6. After backfilling with fine soil, slowly sprinkle water on the fine soil multiple times to facilitate the full absorption of water by the resistance reducing agent and the formation of a package that fully contacts the connecting flat steel. It also facilitates the full contact between the resistance reducing agent, grounding module, and surrounding soil to form a larger flow surface.

The editor of the graphite based flexible grounding body reminds everyone that the connection method of the grounding module should be parallel, using galvanized flat steel (4 * 40) as the collection line and welded to the metal core of the grounding module. Welding must comply with the process requirements and undergo anti-corrosion treatment to remove welding slag. If welding is not allowed in the environment, bolt connection can be used, but good and firm contact should be ensured.