A power transformer is the most costly and essential piece of equipment within an electrical substation. So there’s a need to perform various preventative maintenance activities to ensure the transformer maintains a high level of performance and a long functional life.
Transformers require various routine maintenance tasks including measurement and testing of different parameters of the transformer. There are two main types of maintenance of transformer. We perform one group on a routine basis (known as preventative maintenance), and the second group on an ad-hoc basis (i.e. as required) meaning for getting smooth performance from a transformer, we have to perform some maintenance actions on a regular basis.