6.1.3.4 SettingsTable 31:T3WPDIF Group settings (basic)Name Values (Range) Unit Step Default DescriptionOperation OffOn- - Off Operation Off / OnIdMin 0.10 - 0.60 IB 0.01 0.30 Section 1 sensitivity current, usually W1currentEndSection1 0.20 - 1.50 IB 0.01 1.25 End of section 1, multiple of W1 ratedcurrentEndSection2 1.00 - 10.00 IB 0.01 3.00 End of section 2, multiple of W1 ratedcurrentSlopeSection2 10.0 - 50.0 % 0.1 40.0 Slope in section 2 of operate-restraincharacteristicsSlopeSection3 30.0 - 100.0 % 0.1 80.0 Slope in section 3 of operate-restraincharacteristicsIdUnre 1.00 - 50.00 IB 0.01 10.00 Unrestrained protection limit, multiple ofW1 rated currentI2/I1Ratio 5.0 - 100.0 % 0.1 15.0 Maximum ratio of 2nd harmonic tofundamental harmonic differential currentI5/I1Ratio 5.0 - 100.0 % 0.1 25.0 Maximum ratio of 5th harmonic tofundamental harmonic differential currentCrossBlockEn OffOn- - On Operation Off/On for cross-block logicbetween phasesNegSeqDiffEn OffOn- - On Operation Off/On for negative sequencedifferential functionIMinNegSeq 0.02 - 0.20 IB 0.01 0.04 Minimum negative sequence currentNegSeqROA 30.0 - 90.0 Deg 0.1 60.0 Operate angle for internal/externalnegative sequence fault discriminatorSOTFMode OffOn- - On Operation mode for switch onto faultfunctionIDiffAlarm 0.05 - 1.00 IB 0.01 0.20 Differential current alarm, multiple of basecurrent, usually W1 currenttAlarmDelay 0.000 - 60.000 s 0.001 10.000 Time delay for differential current alarmTable 32:T3WPDIF Non group settings (basic)Name Values (Range) Unit Step Default DescriptionGlobalBaseSelW1 1 - 6 - 1 1 Selection of one of the Global Base Valuegroups, winding 1GlobalBaseSelW2 1 - 6 - 1 1 Selection of one of the Global Base Valuegroups, winding 2GlobalBaseSelW3 1 - 6 - 1 1 Selection of one of the Global Base Valuegroups, winding 3ConnectTypeW1 WYE (Y)Delta (D)- - WYE (Y) Connection type of winding 1: Y-wye or D-deltaConnectTypeW2 WYE (Y)Delta (D)- - WYE (Y) Connection type of winding 2: Y-wye or D-deltaTable continues on next page1MRK 504 135-UEN A Section 6Differential protection85Technical manual
