The railway station and the high-speed railway station can be regarded as an enlarged version of the subway station. The difference is the voltage and the standard and size of the contact network. Generally speaking, the contact network of the railway station and the high-speed railway station is a voltage of 25kV, and the subway contact network is 750V Or 1500V DC.
The layout of the grounding grid of the railway station and the high-speed railway station is almost the same as that of the subway station and layout. However, because of the large area and high voltage level of the contact network, the area of the grounding grid is also large, and the material section also has a larger section.
For example, the Suzhou No. 3 line supplied and constructed by our company, Balic Electric, the TMY-100×10 used for the copper bus, and the copper bar used for the supporting subway station is TMY-50×5, which is 4 times different.
In addition to the different specifications, the material is also selected as the grounding material and connected by Balic exothermic welding technology. The grounding lead-in line is laid using an integrated grounding lead-out device. The difference here is that the grounding-out device is often larger and longer than the size used in the subway system.