METHOD FOR DIAGNOSING DIELECTRIC DETERIORATION OF ELECTRIC DEVICE AND ELECTRIC DEVICE OPERATING METHOD AFTER DIAGNOSIS

摘要

PROBLEM TO BE SOLVED: To solve the problem that it is difficult to diagnose a thermal deterioration of an actual machine in an electric device and impossible to operate the electric device after diagnosis.

SOLUTION: A part of an insulating layer is shaven by a file to collect a sample and the collected sample is analyzed to calculate an analyzed result due to TG-DTA. The intermediate temperature of the primary weight reduction curve of the analyzed result, a total weight reduction curve or a heating peak temperature is collated with a weight reduction rate master curve calculated based on IEC. pub. 216 of a material to be diagnosed to judge a thermal deterioration degree from a preliminarily prepared judge standard table. Further, the shaven region is coated with a room temperature curable resin to continue operation.

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