DIAGNOSTIC METHOD OF OIL-FILLED ELECTRIC EQUIPMENT, DIAGNOSTIC DEVICE OF OIL-FILLED ELECTRIC EQUIPMENT AND OIL-FILLED ELECTRIC EQUIPMENT INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a diagnostic method of an oil-filled electric equipment, a diagnostic device of oil-filled electric equipment and an oil-filled electric equipment including the same capable of diagnosing for internal abnormality of the oil-filled electric equipment by analyzing dissolved gas in insulation oil without sampling the insulation oil from the oil-filled electric equipment.SOLUTION: The diagnostic method of an airtight oil-filled electric equipment including a conservator 9 having an elastic bag body 15. The diagnostic method diagnoses for internal abnormality in the oil-filled electric equipment by analyzing gas in the elastic bag body.