UV spectroscopy of GK transformer oil

Abstract

A simple and efficient method is proposed for obtaining a thin layer of transformer oil in a standard cell for the recording of UV spectra. UV and visible absorption spectra of fresh, used, and aged (under model conditions) transformer oil of the GK type have been recorded, interpreted, and compared. The method is shown to be promising for the monitoring and qualitative analysis of the composition and content of aromatic compounds in transformer oils during the operation of power transformers.