Transcription of Functions Protection Sepam series 80 ... - Schneider Electric
1 0 3 ProtectionTripping curvesCustomized tripping curve Defined point by point using the SFT2841 setting and operating software tool, this curve may be used to solve all special cases involving Protection coordination or tripping curves Current IDM T tripping curvesMultiple IDMT tripping curves are offered, to cover most applications:b IEC curves (SIT, VIT/LTI, EIT)b IEEE curves (MI, VI, EI) b usual curves (UIT, RI, IAC). IEC curvesPE 0 Customized tripping curve set using SFT2841 typeCoefficient valueskabt d I( )kII s----- a1 ----------------------Tb--- =Standard inverse / inverse / time inverse / B 0 inverse / C 0 RI curveEquation: td I( )10 339,0,236II s----- 1 ---------------------------------------- ----------------T3 1706,------------------- =IEEE curvesEquationCurve typeCoefficient valuesABpbtd I( )AII s----- p1 ------------------------B+ Tb--- =Moderately curvesEquationCurve typeCoefficient valuesABCDEbtd I( )ABII s----- C --------------------DII s----- C 2-----------------------EII s----- C 3-----------------------+++ xT b-----= Sepam series 80 Livre 10218/04/2007 11:00:48
