Dielectric parameter measurement technique for resin impregnated paper insulation

Abstract

Abstract This paper proposes an efficient low cost mechanism to accurately measure the dielectric dissipation factor and its allied effect over resin impregnated paper. The measuring circuit is a modified De Sauty bridge network where the accurate parameter measurement can been performed. The effect of stray capacitance over dielectric loss and dissipation factor has been nullified by the application of operational amplifier in the circuit. Different samples of resin impregnated paper have been tested based on their aging and moisture content to check the reliability of the proposed measuring technique. Experimental result shows the efficacy of the proposed method when compared to existing IEC and ASTM standard procedures and commercial measuring devices. Measurement error analysis with repeatability and uncertainty calculation shows promising result and is within the acceptable limits.