| Breakdown in Liquid Dielectrics
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| A very large number of external factors affect the breakdown strength of liquid dielectrics. For example, electrode configuration, their material, size and surface finish; the type of voltage, its period of application and magnitude, the temperature, pressure, purification of the liquid and its ageing condition. Dissolved water, gas or the presence of any other form of contamination and sludge also affect the breakdown strength considerably. It is, therefore, not possible to describe the breakdown mechanism by a single theoretical analysis which may take into account all known observed factors affecting the breakdown. |
| The breakdown strength of any dielectric is distinguished into two broad categories known as the 'intrinsic' and the 'practical' breakdown strengths. |
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