Time-based transformer maintenance is a preventive program set up by the end user, in which the transformer is serviced and tested at regular intervals (ie, yearly, every two years) based on transformer manuals and/or industry standards. In a condition-based program, the necessary maintenance is carried out after determining the real condition or health of the transformer. Transformer condition depends on many factors, such as operational history, age, applications and more. Many end users are adopting condition-based maintenance programs in order to minimize the risk of failures, and spend their Operations & Maintenance funds on the right transformers. ABB transformer services has been successfully offering a Mature Transformer Management Program (MTMP) for more than 10 years, and has assessed the condition, reliability and remaining lifetime of more than 3,000 transformers globally.
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