S-DH High-Speed Railway Ground Wire

The S-DH Railway Through Ground Wire (hereinafter referred to as the Through Ground Wire) is suitable for the railway comprehensive grounding system. This product is a grounding conductor that connects the traction power return, power supply, signal, 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 protection properties, making it suitable for installation in the complex soil environments of our country. The through grounding wire is a type of comprehensive grounding in railway systems, buried in the power cable trenches on both sides of the railway tracks (one through grounding wire is buried on each side), connecting all signal, communication, electrification, power, and other professional equipment on both sides of the railway tracks, as well as other metallic objects. This ensures that all systems and equipment within the railway achieve an equipotential connection.

 The use of a unified grounding method across the entire line reduces potential differences between different equipment and systems, as well as potential hazards to personnel and equipment. It also minimizes the damage to the roadbed stability caused by individually installed grounding wires for various specialized equipment. A comprehensive description of integrated grounding engineering for railways is a complex, comprehensive, and systematic project.

The primary purpose of grounding is 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 AC and DC equipment, protective grounding, overvoltage protection grounding, static electricity grounding, and shielding grounding, which almost covers the entire range along the railway. 1. Characteristics of S-DHDH Railway Continuity Ground Wire 1. The usage environment temperature for the continuity ground wire is -40℃ to +70℃, and the laying temperature should not be lower than -10℃. 2. The allowable bending radius of the continuity ground wire is not less than 15 times the outer diameter of the continuity ground wire.

Product Name and Applicable Voltage

Name: S-DH Railway Through Ground Wire

Rated Voltage:

Model and Specification Range

Model Descriptions and Product Examples

Technical Specifications

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

2. The structure and appearance of the conductor comply with the specifications of the second type of conductor in GB/T3956. The conductor surface should be smooth, free of oil stains, burrs, and single wires that are raised or broken. The testing method should conform to the provisions 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 seamless wrapped around the conductor. The surface of the sheath should be smooth and free of oxidation.

4. Ground wire conduit structure dimensions

5. Basic performance of the through earthing wire

Name and Applicable Voltage

Electrical Grounding Structure Diagram and Physical Photo