7.3.5 Settings
Table 125: ROV2PTOV (59N) Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Disable/Enable Operation
OperationStep1 Disabled
Enabled
- - Enabled Enable execution of step 1
Characterist1 Definite time
Inverse curve A
Inverse curve B
Inverse curve C
-
- Definite time Selection of time delay curve type for step 1
Pickup1 1 - 200 %VB 1 30 Voltage start value (DT & IDMT) in % of VBase
for step 1
t1 0.00 - 6000.00 s 0.01 5.00 Definite time delay of step 1
t1Min 0.000 - 60.000 s 0.001 5.000 Minimum operate time for inverse curves for
step 1
TD1 0.05 - 1.10 - 0.01 0.05 Time multiplier for the inverse time delay for
step 1
OperationStep2 Disabled
Enabled
- - Enabled Enable execution of step 2
Pickup2 1 - 100 %VB 1 45 Voltage start value (DT & IDMT) in % of VBase
for step 2
t2 0.000 - 60.000 s 0.001 5.000 Definite time delay of step 2
Table 126: ROV2PTOV (59N) Non group settings (basic)
Name
Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 6 - 1 1 Selection of one of the Global Base Value
groups
7.3.6 Monitored data
Table 127: ROV2PTOV (59N) Monitored data
Name
Type Values (Range) Unit Description
VLevel REAL - kV Magnitude of measured
voltage
7.3.7 Operation principle
Two step residual overvoltage protection ROV2PTOV (59N) is used to detect ground
(zero sequence) overvoltages. The ground overvoltage 3V
0
is normally computed by
1MRK 511 287-UUS A Section 7
Voltage protection
183
Technical manual
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