ACADEMY SERIES · EPISODE 34Energy

Why Do Idle Generators and Turbines Rust?

In generators and turbines, the real risk often begins when the machine stops. We cover downtime corrosion, the risk to winding insulation, the danger of arcing in transformer rooms and protection with dry air during downtime.

Published: 9 November 2026Narration: Turkish and English2:30

In this video

  • In downtime metal cools; when humid air touches it, conditions become right for corrosion.
  • In turbines, shaft corrosion can cause imbalance, blade damage uneven heating, and vibration at start-up.
  • In humid places winding insulation takes up moisture and its resistance falls.
  • In transformer rooms a moisture film increases leakage current and the risk of arcing.
  • The answer is to keep the air inside dry throughout downtime and monitor humidity with sensors.

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