Transformer is very important and common electrical equipment in the transmission and distribution network. At the same time, it is also complex from the point of view of Insulation. Transformer has different Insulation materials. They have both Liquid and Solid Insulation. Solid insulation consists of paper and wood. Cellulose material love water and it attracts moisture. Condition Based Maintenance (CBM) is the only way to increase the reliability and availability of the Transformer in the network. There are various types of Diagnostic Testing proven in the field which can be utilized in a logical manner to assess the health of the Transformer. Cost benefit analysis of the tests should also be undertaken before selection of Diagnostic Testing.
AYT has the capability in terms of Tools and Expertise to carry out the following Diagnostic Testing in the field and to give recommendations for corrective action: