Lightning protection equipment: The lightning protection grounding module is composed of non-metallic materials with good conductivity and chemical stability, metal grounding body, electrolyte and moisture absorbent. It is suitable for all types of soil environments and has significant advantages in high soil resistivity applications. Compared with the traditional grounding body, this product has the advantages of high resistance reduction efficiency, stable grounding resistance, reduced ground potential counterattack, long service life, corrosion resistance, and convenient construction and installation. Lightning protection equipment

The grounding resistance of the grounding module is calculated as follows:

Grounding resistance of a single grounding module: R=0.158x300=47.4ρ

After grounding, summarize the ground resistance: Rm=R/N.η

ρ: soil resistivity is 300Ωm n: the number of grounding modules is 20

η: module adjustment coefficient is taken as 0.65. Calculation result: Rm=3.65Ω