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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