Name Type DescriptionOPENCTAL BOOLEAN Open CT Alarm output signal. Issued after adelay ...IDL1MAG REAL Fund. freq. differential current, phase L1; in primaryAIDL2MAG REAL Fund. freq. differential current, phase L2; in primaryAIDL3MAG REAL Fund. freq. differential current, phase L3; in primaryAIDNSMAG REAL Negative Sequence Differential current; in primaryAmperesIBIAS REAL Magnitude of the common Bias current; in primaryAmperes6.4.5 SettingsTable 46:GENPDIF Group settings (basic)Name Values (Range) Unit Step Default DescriptionOperation OffOn- - Off Operation Off / OnIdMin 0.10 - 1.00 IB 0.01 0.25 Section 1 sensitivity, multiple of generatorrated currentIdUnre 1.00 - 50.00 IB 0.01 10.00 Unrestr. prot. limit, multiple of generatorrated currentOpNegSeqDiff NoYes- - Yes Negative Sequence Differential EnableOff/OnIMinNegSeq 0.02 - 0.40 IB 0.01 0.10 Neg. sequence curr. limit, as multiple ofgen. rated curr.Table 47:GENPDIF Group settings (advanced)Name Values (Range) Unit Step Default DescriptionEndSection1 0.20 - 1.50 IB 0.01 1.25 End of section 1, multiple of generatorrated currentEndSection2 1.00 - 10.00 IB 0.01 3.00 End of section 2, multiple of generatorrated currentSlopeSection2 10.0 - 50.0 % 0.1 40.0 Slope in section 2 of operate-restraincharacteristic, in %SlopeSection3 30.0 - 100.0 % 0.1 80.0 Slope in section 3 of operate-restraincharacteristic, in %NegSeqROA 30.0 - 120.0 Deg 0.1 60.0 Operate Angle of int/ext neg. seq. faultdiscriminator, degHarmDistLimit 5.0 - 100.0 % 0.1 10.0 (Total) relative harmonic distorsion limit,percentOpCrossBlock NoYes- - Yes Operation On / Off for cross-block logicbetween phasesAddTripDelay 0.000 - 60.000 s 0.001 0.100 Additional trip delay, when inputraisePickUp=1Table continues on next pageSection 6 1MRK 502 048-UEN ADifferential protection124Technical manual
