PROJECT TITLE :

Effect of electric field at 150 °C on the formation of corrosive sulfur in mineral transformer oil

ABSTRACT:

The impact of the application of 12 kV at 150 °C on the formation of corrosive mineral copper sulfide in mineral transformer oil was investigated. It's considered that the presence of sulfur corrosion causes failures in operating windings transformers on top of thirty five kV. Analysis trials on mineral transformer oils were performed at a hundred and fifty °C without an electric field, and conjointly at one hundred fifty °C in electric field primarily based on the norms for the detection of corrosive sulfur established by ASTM D-1275 and IEC 62535. The impact of the applied electric field on the process of corrosive sulfur formation determined. Varying amounts of copper sulfide were found, each on clean Cu electrodes and Cu electrodes covered with Kraft paper, pure Cu formation was conjointly found within the oil. Copper sulfide was quantified using the X-ray dispersion technique with a scanning electron microscope, with EDX.SEM E., and chemical strategies are used to work out the amount of Cu in the oil when the check.