What are the common causes of connector failure in overhead power lines?

2025-08-12

Connector failure is a major cause of power outages and can be attributed to several factors:

  • Improper Installation: This is the most frequent cause, often resulting from using the wrong size tool, die, or applying incorrect compression force. This leads to a weak electrical and mechanical connection.

  • Environmental Stress: Extreme weather, such as wind and ice loads, can cause mechanical stress, while atmospheric pollution and salt spray can lead to corrosion over time.

  • Conductor Overheating: A poor connection can have high electrical resistance, causing localized heat buildup, which can weaken the connector and the conductor itself, leading to a thermal runaway and eventual failure.

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