As the name implies, the graphite ground wire is a kind of wire made of graphite and used for grounding. Then, what's the function of the graphite ground wire? Actually, it is used for lightning protection. One end of it is connected with the lightning rod in the lightning protection tower, and the other end is buried underground. When there are lightning strokes, the lightning rod can channel the huge power it has collected into the ground via the graphite ground wire so as to prevent buildings from thunder's attack. Therefore, the graphite ground wire plays an important role. Thanks to the great conductivity of the graphite, it is used to make the graphite ground wire.

1. Its main performance and characteristics of the graphite ground wire

The graphite ground wire, with a cable shape, is made from the high carbon graphite wire. The material adopted to make the end that is connected with the tower is the unoxidizable alloy. The graphite ground wire belonging to non-metallic electric conductor, has advantages of corrosion resistance, no rust, stable grounding resistance, large current impact without counterattack and damage, unchanged resistance, high and low temperature resistance, long service life of 30 years, maintenance free, being safe and reliable. Free from environmental and climatic restrictions, the graphite ground wire is also great because of its convenient installation, no need for electrogas welding, work and time saving, material and money saving, energy saving and environmental protection. It is especially suitable for the use in acidic soil, alkaline soil, marsh, hot and humid zone and beach.

2. The key technical indexes of the graphite ground wire

  • Solid resistivity: 0.06Ω.m

  • The impact current tolerance: (200KA)ΔR%≤0

  • The power frequency current tolerance: ΔR%≤0

  • High temperature performance: 300℃

  • Low temperature performance: -60℃

  • Compressive strength: ≥1200Mpa

  • Tensile strength: ≥1200Mpa

  • Mohs'scale of hardness on the surface of the graphite ground wire: 1-2

  • The annual corrosion rate of the buried surface: 0