Name Values (Range) Unit Step Default Description
DCrv2 0.000 - 60.000 - 0.001 0.000 Parameter D for customer programmable
curve for step 2
PCrv2 0.000 - 3.000 - 0.001 1.000 Parameter P for customer programmable
curve for step 2
CrvSat2 0 - 100 % 1 0 Tuning param for programmable over
voltage TOV curve, step 2
Table 344: OV2PTOV (59) Non group settings (basic)
Name Values (Range) Unit Step Default Description
ConnType PhN DFT
PhPh DFT
PhN RMS
PhPh RMS
- - PhN DFT Group selector for connection type
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Value
groups
9.2.6 Monitored data
PID-3535-MONITOREDDATA v5
Table 345: OV2PTOV (59) Monitored data
Name Type Values (Range) Unit Description
VA REAL - kV Voltage in phase A
VB REAL - kV Voltage in phase B
VC REAL - kV Voltage in phase C
9.2.7 Operation principle
M15330-3 v11
Two step overvoltage protection OV2PTOV (59) is used to detect high power system voltage.
OV2PTOV (59) has two steps with separate time delays. If one-, two- or three-phase voltages
increase above the set value, a corresponding PICKUP signal is issued. OV2PTOV (59) can be set to
PICKUP/TRIP, based on
1 out of 3
,
2 out of 3
or
3 out of 3
of the measured voltages, being above
the set point. If the voltage remains above the set value for a time period corresponding to the
chosen time delay, the corresponding trip signal is issued.
The time delay characteristic is individually chosen for the two steps, and can be either definite
time or inverse time delayed.
The voltage related settings are made in percent of the global set base voltage
VBase
, which is set
in kV, phase-to-phase.
OV2PTOV (59) can be set to measure phase-to-ground fundamental value, phase-to-phase
fundamental value, phase-to-ground RMS value or phase-to-phase RMS value. The choice of
measuring is done by the parameter
ConnType
.
The setting of the analog inputs are given as primary phase-to-ground or phase-to-phase voltage.
OV2PTOV (59) will trip if the voltage gets higher than the set percentage of the set base voltage
VBase
. This means operation for phase-to-ground voltage over:
Section 9 1MRK 502 066-UUS B
Voltage protection
616
Technical manual
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