What are the key factors that affect the magnitude of the proximity effect, and how can it be reduced?

2025-08-12

Answer: The magnitude of the proximity effect is influenced by several factors:

  • Frequency: The effect is more pronounced at higher AC frequencies.

  • Conductor Diameter: A larger conductor diameter leads to a more significant effect.

  • Conductor Spacing: The effect increases as the distance between adjacent conductors decreases.

  • Conductor Material: Materials with higher magnetic permeability are more susceptible.

To reduce the proximity effect, several strategies can be employed. The most common and effective method, especially in overhead transmission lines, is to increase the spacing between conductors. Using bundled conductors (two or more conductors per phase) is another popular method. This configuration not only increases the effective conductor spacing but also improves the efficiency of the line.

At Ningbo Changshi, we provide a comprehensive range of overhead line tools and accessories that support the installation and maintenance of bundled conductor systems, helping our clients minimize the proximity effect and maximize transmission efficiency.

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