lllg,llg,ll,lg,lll which fault is severe and why?
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Answer Posted / akhilesh
actually l-g fault is severe at generator and l-l-l-g is severe at line.. becoz when derz l-g fault at gen .. 1.5i flows through other two phases instead of i, which is dangerous.
At lines suppose l-l-l-g occurs.. then becoz of zero voltage at tht place.. the high potential difference will make very high current to flow through lines.. which is again severe. from the formulas.. this value is more than any other current flowing through lines
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