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how to calculate knee point voltage of current transformer?
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Answer Posted / saleh abdulsalam trabelsi
to calculate knee point voltage of current transformer by
formal
Vknee point = Isecandary(Rct+ Rcable+ Rburden)
where
Rct= resistenc of current transformer
Rcable =resistenc of cable =2Rcable
Rburden =burden of relay
IF Vknee point< manufacture voltage of current transformer
current transformer is good
IF Vknee point> manufacture voltage of current transformer
current transformer must be change
| Is This Answer Correct ? | 88 Yes | 47 No |
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