Hye Good day to you Im Final Year student currenlty doing my final year project protection coodination study regarding transformer protection. my statement is Partial discharge caused nuisance tripping to transformer. Looking some guidance VIDEO related it.
Why there is no Id, Ibias, Slope setting in ETAP?? As you know that 87 T has setting such as Id, Ibias, Slope 1, Slope 2, Id > 2 Harmonic Block, Id>5 Harmonic Block.
In ETAP, differential trip is considered in Arc Flash evaluation study and Star PD Sequence of Operation analysis. It detects only the difference between both sides positive sequence current flow and trips the breaker. There is no provision to assign bias current, slopes etc. It only needs the operation time, say 10-30 ms which is user defined and should come from relay manufacturers to check Arc Flash and PD Sequence of Operation in ETAP.
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I really appreciate the work from you, could you please post video on differential protection of cable
and restricted earth fault protection also
Hye Good day to you Im Final Year student currenlty doing my final year project protection coodination study regarding transformer protection. my statement is Partial discharge caused nuisance tripping to transformer. Looking some guidance VIDEO related it.
Will do that definitely.. keep watching
@@SmartEducare if any doubts means how did i contact you ya
Why there is no Id, Ibias, Slope setting in ETAP??
As you know that 87 T has setting such as Id, Ibias, Slope 1, Slope 2, Id > 2 Harmonic Block, Id>5 Harmonic Block.
In ETAP, differential trip is considered in Arc Flash evaluation study and Star PD Sequence of Operation analysis. It detects only the difference between both sides positive sequence current flow and trips the breaker. There is no provision to assign bias current, slopes etc. It only needs the operation time, say 10-30 ms which is user defined and should come from relay manufacturers to check Arc Flash and PD Sequence of Operation in ETAP.