All transformer maintenance strategies can be divided into three types: the first type is: predictive dimension, the second type: preventive maintenance, and the third type: state maintenance.
First of all, predictive maintenance is the use of automatic alarm diagnostic devices for transformer monitoring. Predictive maintenance requires the means and methods of state analysis.
The second kind: preventive maintenance is a periodical and phased maintenance strategy. It includes planned maintenance, for example, a variety of regular testing of the transformer, according to the plan of the transformer live test and on-line monitoring, etc..
Then the third kind: state maintenance is for the problem transformer maintenance. It requires detailed analysis, inspection, repair or replacement of Satons transformer components that need to be repaired and replaced.
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