7.3.8 Technical dataTable 128:ROV2PTOV (59N) technical dataFunction Range or value AccuracyOperate voltage, step 1 (1-200)% ofVBase ± 0.5% of Vn at V < Vn± 0.5% of V at V > VnOperate voltage, step 2 (1–100)% ofVBase ± 0.5% of Vn at V < Vn± 0.5% of V at V > VnReset ratio > 98% -Inverse timecharacteristics for low andhigh step, see table 578- See table 578Definite time setting, step1(0.00–6000.00) s ± 0.5% ± 25 msDefinite time setting, step2(0.000–60.000) s ± 0.5% ± 25 msMinimum operate time forstep 1 inversecharacteristic(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 1.2 xVset -Impulse margin time 15 ms typically -7.4 Loss of voltage check LOVPTUV (27)7.4.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberLoss of voltage check LOVPTUV - 277.4.2 FunctionalityLoss of voltage check LOVPTUV (27) is suitable for use in networks with an automaticsystem restoration function. LOVPTUV (27) issues a three-pole trip command to thecircuit breaker, if all three phase voltages fall below the set value for a time longer than theset time and the circuit breaker remains closed.Section 7 1MRK 511 287-UUS AVoltage protection186Technical manual
