Lightning protection grounding
resistance reducing material
Address: Wuluohou Industrial Zone, Weicun Town, Qingyuan District, Baoding City, Hebei Province
The ground lead-out device usually refers to the ‘earth pole’ lead-out device. If it is a common ground system, it refers to the total equipotential row (device).
The grounding lead-out device is composed of a protective cylinder, a water stop ring, a grounding lead wire (usually a 50*5 pure copper bar), and an insulating filling material (epoxy resin).
In the subway grounding system, due to fault current (stray current) protection requirements, the grounding grid is located under its structural floor. Therefore, when the electrical equipment of the subway platform is grounded, it must be connected to the grounding grid through the grounding down conductor to achieve reliable grounding. In the past, the grounding down conductor was usually drawn directly from the structural floor or through a PVC pipe. With this measure, it is easy to fail to meet the protection requirements of fault current (stray current), groundwater is easy to seep out from the grounding lead, and it does not meet the design requirements of subway grounding.
The grounding lead-out device is composed of a protective cylinder, a water stop ring, a grounding lead wire, and insulating filling materials. The protective tube is made of stainless steel, the grounding lead wire is made of T2 copper bar, and the hollow part of the protective tube is filled with insulating material, which can effectively prevent groundwater from seeping when the subway platform power equipment grounding, signal equipment grounding and lightning protection grounding are connected to the integrated grounding grid , And can well meet the fault current (stray current) protection requirements.
Model and specification of grounding lead-out device
900 type Ø 108mm×1000mm 1000 type Ø 108mm×1100mm
Model 1300 Ø 108mm×1400mm Model 1500 Ø 108mm×1600mm