High Voltage Transformer Bushing Failure

Fluid 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 provide on-line problem location in large transformers by using special sensors.

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