Failure Identification and Analysis for Arc Suppression Coil with 66kV

Through a 66kV coil burning accident of a company for analysis, the use conditions of coil and the real cause of the coil failure, the working principle, the precautions are introduced. And then the causes for arc coil failure are listed. the whole process of the test and judgment of the 66kV arc suppression coil burn accident are expounded. The chromatographic test data and operation report before and after the failure for 66kV arc suppression coil, which proving that 66kV arc suppression coil fault is still due to manufacturing process, and provides scientific basis for analyzing and judging such arc suppression coil faults in the future.