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Partial discharge: Understanding how it occurs, detecting its presence and corrective action
Publication date:
November 2011 Concerns about partial discharge (PD) used to be limited to repairers and users of machines rated over 7 kV. PD is a common consideration for machines rated 11 kV and higher. This article will describe PD, explain how to detect it, and offer repair solutions.
Discussion includes:
- What is partial discharge?
- Air as an insulator
- Can we fix it?
- Detecting partial discharge
- Monitoring partial discharge activity
- Partial discharge in random windings
