Partial discharge facts for kids
A partial discharge (PD) is an electric discharge that breaks through a small portion of the insulation between two conductors. A discharge is when electrical charge that has accumulated is suddenly released (like a spark). A partial discharge does not completely cross the insulation between the two conductors, only a small portion of it in one area. It may happen under the stress of high voltage. It is caused by a small opening (void) inside the insulating material. The insulating material can be either solid or fluid. The charge passing through this insulation is called electrical breakdown.
Images for kids
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Partial discharge test set with partial discharge meter, manual test adapter for semiconductors (for example optocoupler) and computer with control software from MPS Mess-& Prüfsysteme.
See also
In Spanish: Descarga parcial para niños
