Name Values (Range) Unit Step Default DescriptionCCrv2 0.0 - 1.0 - 0.1 0.0 Parameter C for customer programmablecurve for step 2DCrv2 0.000 - 60.000 - 0.001 0.000 Parameter D for customer programmablecurve for step 2PCrv2 0.000 - 3.000 - 0.001 1.000 Parameter P for customer programmablecurve for step 2CrvSat2 0 - 100 % 1 0 Tuning param for prog. over voltage IDMTcurve, step 2Table 274:OV2PTOV Non group settings (basic)Name Values (Range) Unit Step Default DescriptionConnType PhN DFTPhPh DFTPhN RMSPhPh RMS- - PhN DFT Group selector for connection typeGlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Valuegroups9.2.6 Monitored dataTable 275:OV2PTOV Monitored dataName Type Values (Range) Unit DescriptionUL1 REAL - kV Voltage in phase L1UL2 REAL - kV Voltage in phase L2UL3 REAL - kV Voltage in phase L39.2.7 Operation principleTwo step overvoltage protection OV2PTOV is used to detect high power systemvoltage. OV2PTOV has two steps with separate time delays. If one-, two- or three-phase voltages increase above the set value, a corresponding START signal is issued.OV2PTOV can be set to START/TRIP, based on 1 out of 3, 2 out of 3 or 3 out of 3 ofthe measured voltages, being above the set point. If the voltage remains above the setvalue for a time period corresponding to the chosen time delay, the corresponding tripsignal is issued.The time delay characteristic is individually chosen for the two steps and can be either,definite time delay or inverse time delay.The voltage related settings are made in percent of the global set base voltage UBase,which is set in kV, phase-to-phase.OV2PTOV can be set to measure phase-to-earth fundamental value, phase-to-phasefundamental value, phase-to-earth RMS value or phase-to-phase RMS value. Thechoice of measuring is done by the parameter ConnType.1MRK502052-UEN B Section 9Voltage protection495Technical manual
