Electrical breakdown | Wikipedia audio article
Channel: wikipedia tts
Date: 13/01/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electrical_breakdown


00:00:40 1 Failure of electrical insulation
00:01:43 2 Mechanism
00:02:11 2.1 Solids
00:02:38 2.2 Liquids
00:03:32 2.3 Gases
00:05:03 2.4 Persistent arcs
00:06:13 2.5 Voltage-current relation
00:08:55 3 Corona breakdown
00:09:32 3.1 Appearance
00:10:07 3.2 Ozone generation
00:10:56 3.3 Other uses
00:11:47 4 Disruptive devices
00:13:09 5 See also



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SUMMARY
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Electrical breakdown or dielectric breakdown is when current flows through an electrical insulator when the voltage applied across it exceeds the breakdown voltage. This results in the insulator becoming electrically conductive. Electrical breakdown may be a momentary event (as in an electrostatic discharge), or may lead to a continuous arc if protective devices fail to interrupt the current in a power circuit.
Under sufficient electrical stress, electrical breakdown can occur within solids, liquids, gases or vacuum. However, the specific breakdown mechanisms are different for each kind of dielectric medium.