engleski

Compatibility of solid materials used in transformers with mineral transformer oil

Insulation system failures are the most common transformer faults causing major and expensive problems in energetic systems. The insulation materials and components have to be carefully chosen during the manufacture to ensure fault prevention and correct and reliable operation of the transformer. In this paper, compatibility test results of solid materials used in transformers with mineral transformer oil are presented. The aim is to contribute to better understanding of the interactions between solid materials and mineral insulation oil and to emphasize the importance of qualification and compatibility tests during the selection of materials for the use in electrical equipment. The focus of the paper is on transformer oil characteristics and specific degradation products soluble in the oil, determined by different chemical techniques.

Compatibility; solid materials; mineral transformer oil; degradation products

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