Method for determination of the Dielectric permittivity of materials electroaislantes

摘要

The Invention relates to the field of Electric Energy (High tension)Using the detention of partial discharges for the relative permittivity of the DIELu00c9CTRICA Electrical Insulating material and is placed between the electrodes to measure the material a previously imponiu00c9ndole inclusion gas or Air whose Dimensions are mu Cho greater than the thickness of the insulation.Through the application of an Alternating Voltage to the electrodes creates an electric field which is homogeneous in the center of the Insulator, and measured the electrical Voltage which produces to the emergence of partial discharges in gas inclusion.With the measured value, the relative permittivity of the material is determined DIELu00c9CTRICA electroaislante simply and accurately by the expression: where UI is the value of the measured Voltage and the UIB, Delta Delta Delta (B, D, J, and ej are known Data of the sample used for the testThe inclusion of soda and other Insulating Materials displayed between the electrodes with the sample in case they are used.