Chemical Reactor that just happens to transform electricity
Transformers do fail.
In the event of failure, the force applied to the structure may approximate 360 PSI due to the steep wave front and high velocity, representing a loading sufficient to distort the container or shear the holding bolts and possibly cause a transformer oil fire.
The increased stress require more frequent and improved Condition Monitoring. The fault free operation of power transformers is of major economic/safety importance to power utilities and industrial consumers of electricity.
The application of Dissolved Gas Analysis(DGA)
The insulating oil is capable of dissolving gases in the event of developing faults in the transformer. These gases are extracted from the oil. Analysed by the sophisticated technique of Gas Chromatography. Diagnosismethods are utilised to diagnose the type and severity of the fault occurring in the transformer.
(DGA)Universal accepted method of choice to locate incipient thermal and electrical faults, DGA methodology and applicability have evolved significantly since its inception 30 years ago.There are various interpretation Codes for diagnosis. The interpretation should be left to a specialist and his advice and recommendations should be followed. The incorrect diagnosis can lead to costly transformer failure.