7.3.5 SettingsTable 125:ROV2PTOV (59N) Group settings (basic)Name Values (Range) Unit Step Default DescriptionOperation DisabledEnabled- - Disabled Disable/Enable OperationOperationStep1 DisabledEnabled- - Enabled Enable execution of step 1Characterist1 Definite timeInverse curve AInverse curve BInverse curve C- - Definite time Selection of time delay curve type for step 1Pickup1 1 - 200 %VB 1 30 Voltage start value (DT & IDMT) in % of VBasefor step 1t1 0.00 - 6000.00 s 0.01 5.00 Definite time delay of step 1t1Min 0.000 - 60.000 s 0.001 5.000 Minimum operate time for inverse curves forstep 1TD1 0.05 - 1.10 - 0.01 0.05 Time multiplier for the inverse time delay forstep 1OperationStep2 DisabledEnabled- - Enabled Enable execution of step 2Pickup2 1 - 100 %VB 1 45 Voltage start value (DT & IDMT) in % of VBasefor step 2t2 0.000 - 60.000 s 0.001 5.000 Definite time delay of step 2Table 126:ROV2PTOV (59N) Non group settings (basic)Name Values (Range) Unit Step Default DescriptionGlobalBaseSel 1 - 6 - 1 1 Selection of one of the Global Base Valuegroups7.3.6 Monitored dataTable 127:ROV2PTOV (59N) Monitored dataName Type Values (Range) Unit DescriptionVLevel REAL - kV Magnitude of measuredvoltage7.3.7 Operation principleTwo step residual overvoltage protection ROV2PTOV (59N) is used to detect ground(zero sequence) overvoltages. The ground overvoltage 3V0 is normally computed by1MRK 511 287-UUS A Section 7Voltage protection183Technical manual
