At start of video, u mentioned star side of star delta for can be used as return path for fault current. Normaly the star winding offer a high inductance so the impedance Z will be higher , so fault current will be lower which will not activate primary system protection. Earthing xmer will provide almost zero Z ,which will alow high enough current to activate protection.
Very nice sir..❤❤
At start of video, u mentioned star side of star delta for can be used as return path for fault current. Normaly the star winding offer a high inductance so the impedance Z will be higher , so fault current will be lower which will not activate primary system protection. Earthing xmer will provide almost zero Z ,which will alow high enough current to activate protection.
Superb sir