Investigations on critical parameters of nano solid dielectrics for the optimized function of power transformer

In recent years solid dielectrics are more commonly used as insulation for electrical equipment, as these solid dielectric elements have the properties to withstand high electric field. The properties of solid dielectric elements shall be further improved by reinforcing nano particles. This work investigates the enhancement of critical parameters of solid dielectrics using nano particles for the optimized function of power transformer. Nano solid dielectric materials are composed of epoxy resin and nano particles such as alumina (Al₂O₃). The nano particles are added at different volume fractions of 0.5% and 1% with epoxy resin. The electrical and mechanical characteristics of the solid nano dielectric materials impregnated in insulating mineral oil and without mineral oil are investigated. The critical parameters such as breakdown strength, resistivity and tensile strength are measured. The tests are conducted in accordance with IS and ASTM standards.