filled transformer condition can be assessed with liquid
sample tests including dissolved gas analysis (DGA). While
these tests provide a good indication of the transformer
oil and the condition of the transformer itself, they cannot
detect problems in bushings or problems occurring above
the fluid level.
Partial discharge testing can be used to supplement regular fluid analysis
to ensure reliable transformer condition. Additionally, the IQ Program can
on-line problem location in large transformers by using special sensors.