In the subway grounding system, due to fault current protection requirements, the grounding grid is located under the structure of the floor, so the subway station electrical equipment grounding, must be grounded off the ground and the ground connection to ensure that the grounding system is stable and reliable. In the subway grounding design is usually taken directly from the structure of the bottom plate leads to the ground or through the PVC pipe leads to the ground lead off the assembly line. But this program is prone to fault current protection requirements are not up to standard, groundwater easily from the ground lead off the line and other defects. 

Earthing Deriving Device is based on the subway grounding system of the special requirements of the design and development. The product has a high efficiency conductive discharge capacity, strong corrosion resistance and stable sealing performance. Through the product and the subway station power equipment grounding, signal equipment grounding and lightning protection grounding and integrated grounding network connection, to achieve stray current protection requirements at the same time can effectively prevent groundwater seepage.