10.3.6.3 DesignANSI08000009_en_1.vsdRESTOREPICKUP PICKUPTRIPPickup&TripOutputLogicBLOCKFrequency100 msComparatorIf[PUFreqGrad<0ANDdf/dt < PUFreqGrad]OR[PUFreqGrad>0ANDdf/dt > PUFreqGrad]ThenPICKUPComparatorf > RestoreFreqORDefinite Time DelaytTriptRestoreBLKDMAGNRate-of-Changeof FrequencyBLOCKfreqNotValidANSI08000009 V1 ENFigure 140: Schematic design of Rate-of-change frequency protection SAPFRC (81)10.3.7 Technical dataTable 180:SAPFRC (81) technical dataFunction Range or value AccuracyOperate value, pickup function (-10.00-10.00) Hz/s ± 10.0 mHz/sOperate value, restore enablefrequency(45.00 - 65.00) Hz ± 2.0 mHzTimers (0.000 - 60.000) s <130 msOperate time, pickup function At 50 Hz: 100 ms typicallyAt 60 Hz: 80 ms typically-Section 10 1MRK 502 043-UUS BFrequency protection302Technical Manual
