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Home / Technical Articles / High Voltage Cables In a Nutshell (Technology, Bonding, Installation and Service)

Cable technology

Differences between the electrical characteristics of overhead transmission lines and high voltage AC cables are fundamental and must be considered. This article gives a brief introduction to cable technology, with focus on the topics which must be considered when designing a protection system for a mixed conductor circuit which consist of both cable and overhead line.

High Voltage Cables In a Nutshell (Technology, Bonding, Installation and Service)
High Voltage Cables In a Nutshell (Technology, Bonding, Installation and Service) - photo credit: New River Electrical Corporation

This article will also touch the fault statistics of underground cable circuits and overhead lines. This is an important input for the auto-reclose policy applied to mixed conductor circuits.

Let’s make the contents:

  1. Cable types
    1. Paper insulated cables
      1. High-pressure fluid-filled (HPFF) pipe cables
      2. Self-contained fluid-filled (SCFF) cables
    2. Polymeric cables
  2. Cable accessories
  3. Metallic sheath of the cable
  4. Bonding techniques
    1. Solid bonding
    2. Single point bonding
    3. Cross-bonding
    4. Accessories for bonding
  5. Cable arrangement and laying techniques
    1. Laying techniques (direct burial, lying in pipes and ducts, tunnels)
    2. Cable arrangement
  6. Service experience / Fault statistics
    1. Cigre report on service experience

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Edvard Csanyi

Electrical engineer, programmer and founder of EEP. Highly specialized for design of LV/MV switchgears and LV high power busbar trunking (<6300A) in power substations, commercial buildings and industry facilities. Professional in AutoCAD programming.

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