ZH-R 108*1500-50*5*(400+300)-tube body H/mm: 1500 d/mm: 108-lead wire S/mm50*5 L1/mm: 400 l2/MM: 300ZH-R 108*1650-50*5*(650+600)-tube body H/mm: 1650 d/mm: 108-lead wire S/mm50*5 L1/mm: 650 l2/MM: 600GC-101-Material: Brass-Application: Flat steel wall fixingGC-102-Material: Brass-Usage: Flat steel wall fixingThe grounding extraction device can realize the grounding extraction device of subway station power equipment grounding, signal equipment grounding and lightning protection grounding, which can effectively prevent groundwater leakage when connected to the integrated grounding grid, and can well meet the requirements of stray current protection. AThe grounding lead-out device is composed of a protective tube, a water stop ring, a grounding lead-out wire, and an insulating filler material. The protection tube is made of stainless steel, the grounding lead is made of T2 copper, and the hollow part of the protection tube is filled with insulating material. It has the advantages of scientific material selection, reasonable structure, advanced technology, stable and reliable quality, and convenient construction and installation. It can realize the groundwater seepage prevention when the subway station power equipment grounding, signal equipment grounding and lightning protection grounding are connected with the integrated grounding grid, and can well meet the fault current (stray current) protection requirements.