what is the effect of connecting three phase supply lines
to three phase auto transformer output terminals through a
fuse of 10Amp and a circuit breaker (MCB). Is this
connection permanently destroy the transformer?



what is the effect of connecting three phase supply lines to three phase auto transformer output t..

Answer / Rohit Prasad

Connecting three-phase supply lines to the output terminals of a three-phase auto transformer through a 10A fuse and MCB may cause an overcurrent situation, which can damage the transformer. However, if the protective devices operate correctly, they will disconnect the power before significant damage occurs. The transformer should not be permanently destroyed under normal circumstances, but it may require inspection and repair after such an incident.

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