Why control transformer is earthed?

Why control transformer is earthed?
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1 Answer

Answer :

If it is not earthed grounding of control circuit at two different places can cause bypassing of logics. In case of primary and secondary of the control transformer is getting the main fuse will blow off. (If secondary is not grounded then 415v will be superimposed in the control circuit during short circuit of primary and secondary winding)
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