What are the primary differences in components between overhead and underground power lines?

2025-08-12

Answer: While both systems serve the same purpose, their components differ significantly due to their environments. overhead lines are exposed to the elements and use bare conductors, insulators, and large support structures. underground cables, on the other hand, are buried and require robust, insulated conductors with multiple protective layers. Key components for underground systems include:

  • Insulated Conductors: Made of aluminum or copper, these are fully insulated to prevent contact with the surrounding soil or water.

  • Cable Sheaths and Jackets: Protective layers of metal and plastic that shield the conductor and insulation from moisture, chemicals, and physical damage.

  • Conduits and Ducts: Tubes or channels that house the cables and provide an extra layer of protection during installation and operation.

  • Manholes and Handholes: Access points for laying, splicing, and maintaining the underground cables.

Our company specializes in a wide array of underground cable laying equipment and tools, which are essential for the efficient and safe installation of these specialized components.

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