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3 ph motor connected in star delta starter. when we start
the motor it run in star but when in is going in delta it
trips the main incoming supply. why?

Answer Posted / rajesh kumar sharma

Two conterctor hold on star running time after some time a conteractor whose shrt three terminals has unhold and delta conteractor is hold it change only one sccond time.
if the timer switch is not working than creat a problam.

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