9.2.8 Technical dataTable 165:OV2PTOV (59) technical dataFunction Range or value AccuracyOperate voltage, step 1and 2(1-200)% ofVBase ± 0.5% of Vn at V < Vn± 0.5% of V at V > VnReset ratio >98% -Inverse timecharacteristics for steps 1and 2, see table 577- See table 577Definite time delay, step 1 (0.00 - 6000.00) s ± 0.5% ± 25 msDefinite time delays, step2(0.000-60.000) s ± 0.5% ± 25 msMinimum operate time,Inverse characteristics(0.000-60.000) s ± 0.5% ± 25 msOperate time, pickupfunction30 ms typically at 0 to 2 x Vset -Reset time, pickupfunction40 ms typically at 2 to 0 x Vset -Critical impulse time 10 ms typically at 0 to 2 x Vset -Impulse margin time 15 ms typically -9.3 Two step residual overvoltage protection ROV2PTOV(59N)9.3.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberTwo step residual overvoltageprotectionROV2PTOV3U0>IEC10000168 V1 EN59N9.3.2 FunctionalityResidual voltages may occur in the power system during ground faults.Two step residual overvoltage protection ROV2PTOV (59N) function calculates theresidual voltage from the three-phase voltage input transformers or measures it from aSection 9 1MRK 502 048-UUS AVoltage protection294Technical manual
