Method and device for diagnosing insulation deterioration of an electrical apparatus

摘要

In order to diagnose non-distructively the deterioration degree of such as insulation oil and insulation paper during operation of an oil filled electrical machine and apparatus without stopping the operation thereof, a deterioration degree disgnosis method for the oil filled electrical machine and apparatus makes use of optical fibers (6, 7) and oil immersed probe (5) and diagnoses the deterioration degree of an insulation paper non-distructively based on reflection absorbance difference between those for any two wavelengths of the insulation paper. <IMAGE>