fault current characterestics of solidly earthed transformer

[appunni]

Sir,
In solidly earthed transformer, the fault current varies with the fault position in the winding in a complex manner. The voltage is proportional to turns and impedance is proportional to square of turns. Then, how does the fault current reduces at about the middle portion of the winding and how does the fault current reduces immediately at points very near to neutral? Can anybody give a detailed explanation?

 

[DanDel]

Are you talking about a fault inside the winding of a transformer?

 

[gordonl]

The literature I've see on the issue suggests that fault current reaches it's maximum close to the neutral. They suggest that impedance doesn't follow a simple square relationship because it is dependant on leakage reactance. They suggest lowest FAULT current occurs at around 60% of winding, but is still 70% of full winding fault. Current seen on the primary varies from 0-100% as the turns ratio varies.

 

[appunni]

To Mr.Dandel: Yes. I was asking about the fault in the winding of the transformer. I request for your explanation.
To Mr. Gordonl: Thanks for your valuable information.