Question

What happened wen a secondary of transformer is directly esrthed?

Answer 1

Explanation:

Earthing of distribution transformer neutral serves the following three purposes: (1) In case of line-to-ground faults, which is most common among all faults, fault current flows to the earth which is sensed by the relay or fuses.

Answer 2

Explanation:

in case of line to ground false false current flow to the Earth which is sensed by the relay and faults