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A kind of Life Evaluation Method for Composite Insulator

 Effectively understanding the aging properties of composite insulator in service and exploring the life evaluation method are crucial to ensure the safe operation of composite insulator. 

Composite insulators of different serving times were tested by visual examination, hydrophobicity test, infrared thermal imaging test and scanning electron microscope (SEM) tests. 
According to the results, both the results of visual examination and hydrophobicity tests have a decaling trend along with the increasing of running time. And the infrared thermal imaging tests can on-line monitor the composite insulator; the SEM test can explain and measure the composite aging degree from the microscopic. 
composite insulator composite insulator
On the basis of these experiments, a life evaluation method for composite insulators is used and improved to guide the operation, maintenance and returned of composite insulators.\
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