I HAVE A 1 MVA TRANSFORMER, I WANT TO KNOW THE FAULT LEVEL OF
THE SYSTEM ( WHAT IS FAULT LEVEL PLEASE EXPLAIN WITH EXAMPLE)
Answers were Sorted based on User's Feedback
FAULT LEVEL MEANS SHORT CIRCUIT CAPACITY OF TRANSFORMER.YOU
HAVE NOT MENTIONED THE VALUE OF TRANSFORMER RATIO & % OF
IMPEDENCE.ASSUMED VOLTAGE RATIO= 11KV/415 V & % OF
RATED FULL LOAD AMP OUTPUT =1MVA/(415 X 1.732)=1391.25A
SO SHORT CIRCUIT CAPACITY OF TRANSFORMER= 1391.25/6%
IF ANY FAULT OCCURED THEN THE ABOVE TRANSFORMER WITHSTAND
THE SHORT CIRCUIT CURRENT OF 23187 A.
|Is This Answer Correct ?||33 Yes||4 No|
Answer / raj l. lahare
For correct Fault level the DATA given is not sufficient. You need to give the Voltage Ratio and the % impedance of the Transformer.
|Is This Answer Correct ?||1 Yes||0 No|
Answer / deepak gupta
above ans. is right
|Is This Answer Correct ?||2 Yes||2 No|
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