The Partial discharge reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Partial discharge

In electrical engineering, a partial discharge is a localized dielectric breakdown of a section of dielectricly stressed insulation path that occurs generally in voids, cracks or interfaces within that insulation system or from sharp edges of energized apparatus parts.

The classic form of corona discharge is usually denoted by a glow or brush discharge. Partial discharge in insulation systems may or may not exhibit this.

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