FIELD: physics.
SUBSTANCE: method is realised by irradiating an analysed section with monochromatic radiation and recording luminescence spectra. Degree of deterioration of solid insulation is determined from the ratio of intensity of the luminescence spectrum of the diagnosed solid insulation to the intensity of luminescence spectrum at the beginning of the period of operation.
EFFECT: possibility of nondestructive inspection of insulation without pre-selection directly on transformer windings.
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