Application of Disruptive Tests for the Determination of BIL through Spinterometric Spheres in the High Voltage Laboratory of the Salesian Polytechnic University

Abstract

BIL is the basic level of insulation for lightning impulse test or NBI that determines the dielectric strength of a device which is expressed as a function of the peak value of a standard pulse. The research carried out contributes with values in disruptive tests in medium voltage devices through spinterometric spheres constructed, in their electronic stage, by the authors. which allow lightning-type discharge. This document presents the tests carried out at different voltage levels and determines the percentage of failure probability of the device. In this proposed approach, each of the devices will have its atmospheric correction factor for the positive and negative impulse tests, obtaining the parameters and adequate voltage levels for the applied tests. In this way the functioning of the proposed electronic circuit for the spheres was validated, the respective analysis of the tests was carried out according to the IEEE Std 4 applied for this type of tests.