Abstract
that changes the voltage without changing the frequency of the production system. The transformer has insulation to cover the transformer windings. Insulation commonly used in transformers is oil insulation and paper insulation. Insulation using paper is flexible or flexible to follow the desired shape. There are several important factors to consider when considering insulation materials including strength and durability. In this study, isolation testing was carried out using isolation paper and analysis using linear regression. The test was carried out by varying the thickness of the paper and the state of the paper being dry and soaked in insulating oil. The results of testing insulation paper with a thickness of 1.04 mm in the dry state shows an average breakdown voltage value of 6.7 kV and with the same thickness of 1.04 mm in an oil-immersed state shows an average breakdown voltage value of 23.82 kV, this indicates that the insulating paper with the immersion method has a better breakdown voltage than insulating paper in a dry state. While the effect of the thickness of the insulation paper on the breakdown voltage is that the thicker the insulation paper, the greater the resulting breakdown voltage, this was obtained using a simple linear regression analysis where the X variable affects the Y variable with a correlation value of 0.998.
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