why the autotransformer burnt while stating the pumpmotor?,
In starter and motor there was no abnormality.

Answer Posted / pillay

a)Loose terminations at the auto transformer itself .
b)intermittent failure of the change over timer or starter.
c)excessive load at time of starting .
d)insulation failure of the auto transformer.

Is This Answer Correct ?    9 Yes 1 No



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