S-DH High-Speed Railway Continuous Grounding Wire

The S-DH Rail Through Grounding Wire (hereinafter referred to as the Through Grounding Wire) is suitable for the comprehensive grounding system of railways. This product is a grounding conductor that connects the traction power return, power supply, signaling, communication, and other electronic information systems along the railway, as well as various equipment, forming an equipotential connection. It achieves functions such as preventing electromagnetic induction interference, static interference, and lightning intrusion along the railway equipment.

The alloy sheath of this product boasts excellent corrosion resistance and environmental performance, making it suitable for installation in the complex soil conditions of our country. A through-ground wire is a type of comprehensive grounding in railway systems, buried in the cable trays on both sides of the railway tracks (one through-ground wire is buried on each side), connecting the signal, communication, electrification, and power equipment on both sides of the railway tracks, as well as other metallic objects. This ensures that all systems and equipment in the railway are interconnected at the same potential.

 Utilizing a unified grounding method across the entire circuit, it not only reduces potential differences between different equipment and systems, as well as the potential hazards to personnel and equipment, but also minimizes the damage caused to the subgrade stability by individually installed grounding wires for various specialized equipment. The comprehensive and integrated grounding is a complex, comprehensive engineering system project for railway grounding.

The primary purpose of grounding: to ensure equipment. Its comprehensive nature is reflected in the system providing lightning protection grounding for buildings and structures along the railway, working grounding for both low and high voltage equipment, protective grounding, overvoltage protection grounding, static electricity grounding, and shielding grounding, etc., covering almost the entire range along the railway. 1. Characteristics of the S-DHDH railway continuous grounding wire: 1. The operating temperature range for the continuous grounding wire is -40℃ to +70℃, with the laying temperature not below -10℃. 2. The allowable bending radius of the continuous grounding wire is not less than 15 times its outer diameter.

Product Name & Applicable Voltage

Name: S-DH Railway Through Ground Wire

Rated Voltage:

Model and specification range

Model Descriptions and Product Examples

Technical Specifications

1. The conductors in the through-ground wire are made of TR-type soft round copper wire as specified by GB/T3953. The volume resistivity of the soft round copper wire does not exceed 0.017241 Ω.mm²/m (20℃), and the testing method complies with the provisions of GB/T3048.2-2007. The elongation at break of the soft round copper wire is not less than 25%, and the testing method is in accordance with GB/T4909.3-2009.

2. The structure and appearance of the conductor comply with the provisions of the second type of conductor in GB/T3956. The conductor surface should be smooth, free of oil stains, burrs, and single wires with protrusions or breaks. The testing method should conform to the requirements of GB/T4909.2-2009.

3. The outer sheath of the grounded conduit should be made of environmentally friendly metal or alloy material and should be tightly and seamlessly wrapped around the conductor as a whole. The surface of the sheath should be smooth and free from oxidation.

4. Ground wire structural dimensions

5. Basic Performance of Conduction Ground Wire

Product Name and Applicable Voltage

Conduit ground structure diagram and physical photos