ABB Relion 650 Series Applications Manual

Also see for RELION 650 SERIES: Technical manual Technical manual Commissioning manual Engineering manual Operation manual

Contents

7. Set parameterROADir to value 90 degree8. Set parameterLowVolt_VM to value 5%9. Enable one overcurrent step (for example, OC1)10. Select parameterCurveType_OC1 to valueIEC Def. Time11. Set parameterStartCurr_OC1 to value 38%12. Set parametertDef_OC1 to value 2.0s (typical setting)13. Set parameterDirMode_OC1 toForward14. Set parameterDirPrinc_OC1 toIcosPhi&U15. Set parameterActLowVolt1_VM toBlockProper operation of the CVGAPC function made in this way can easily be verified by secondaryinjection. All other settings can be left at the default values. However it shall be noted that setvalues for RCA & ROA angles will be applicable for OC2 step if directional feature is enabled forthis step as well. Figure 57 shows overall protection characteristicFurthermore the other build-in protection elements can be used for other protection andalarming purposes.0.2 0.4 0.6-0.20.60.80.8 1D ILowSetBAC0.40.201.2 1.4-0.4-0.6-0.8-rcaOperating RegionQ [pu]P[pu]rcaUPSIPSILowSetOperating regionen05000535.vsdIEC05000535 V2 EN-USFigure 57: Loss of excitation1MRK 505 355-UEN A Section 8Multipurpose protection141Application manual