Answer / ajaydoss

1) Fault between Phase to Neutral is phase fault
2) Fault between Phase to Phase is line fault.

Answer / hari

1) Fault between Phase to Neutral is phase fault.(R-N)
2) Fault between LINE TO LINE is line fault.(R-Y)

Answer / ashwin

There are basically 4 types of fault
Symmetrical fault is
1. 3phase fault and
Unsymmetrical faults are
2.Line to ground fault,
3.line to line fault and
4.line to line to ground fault.

Phase fault occurs when one of the line falls on any ground structure.
line to line fault occurs when any two lines of the 3 come in contact with each other without any physical contact with the ground...
Phase to phase fault occurs when any two lines of the 3 come in contact with the ground structure, in other words phase to phase fault is line to line to ground fault.

Correct me if I am wrong..
My email id is : tarus_cool@yahoo.co.in

Answer / ram niveth

both are same

Answer / dharmesh ramani

Phase to Phase fault.

when you have 3 ph supply, at that time if any one phase came in contact with another phase without any Ground Contac and draw effectively high current and trip the circuit. that is called Phase to Phase fault. in this condition your connected load may be affected or damage due to failure of 2 phases.

Answer / day walker798

a line to line fault is when two things operate when say a
switch or relay is engergised. one of which is what you
expect, the other is unexpected.

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