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About transformer Aging and degradation

October 17, 2019

About transformer Aging and degradation


During a transformer’s service life, numerous electrical phenomena and other stresses can occur that degrade the physical and dielectric properties of its oil and paper. Electric utilities should continually monitor and reduce the level of contaminants and oil degradation products in transformers in order to maintain the equipment’s performance, prevent failure, and prolong the equipment life.


The degradation processes are primarily chemical in nature and are accelerated by the presence of promoters, such as acids, oxygen, water, and other contaminants. If the degradation processes are left unchecked, it will eventually compromise the integrity of the equipment. Studies show that by removing these promoters from the oil, the life of a transformer can be significantly extended.




Reference:  Transformer Digital Magazine