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 prog. over voltage
IDMT curve, step 2
Table 126: OV2PTOV 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 v6
Table 127: OV2PTOV Monitored data
Name
Type Values (Range) Unit Description
UL1 REAL - kV Voltage in phase L1
UL2 REAL - kV Voltage in phase L2
UL3 REAL - kV Voltage in phase L3
9.2.7 Operation principle
M15330-3 v11
Two step overvoltage protection OV2PTOV is used to detect high power system
voltage. OV2PTOV has two steps with separate time delays. If one-, two- or three-
phase voltages increase above the set value, a corresponding START signal is
issued. OV2PTOV can be set to START/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
UBase, which is set in kV, phase-to-phase.
OV2PTOV can be set to measure phase-to-earth fundamental value, phase-to-phase
fundamental value, phase-to-earth RMS value or phase-to-phase RMS value. The
choice of measuring is done by the parameter ConnType.
1MRK 505 394-UEN A Section 9
Voltage protection
Line differential protection RED650 2.2 IEC 245
Technical manual
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