11.6.4
Voltage protection
The viewable data available under voltage protection are mainly trip related and
comprise data regarding undervoltage, overvoltage, residual overvoltage and
overexcitation.
11.6.4.1
Loss of voltage check LOVPTUV
Main menu/Test/Function status/Voltage protection/LossofVoltage(PTUV,27)/
LOV
Displays the output data of LOVPTUV.
11.6.4.2
Two step overvoltage protection OV2PTOV
Main menu/Test/Function status/Voltage protection/OverVoltage2Step(PTOV,
59)/TOV
Displays available instances of OV2PTOV with several measurements per
instance. The measurements include operate/trip and start signal data.
11.6.4.3
Two step residual overvoltage protection ROV2PTOV
Main menu/Test/Function status/Voltage protection/
ResidualOverVoltage2Step(PTOV,59N)/TRV
Displays available instances of ROV2PTOV with some measurements per instance.
The measurements include operate/trip and signal data.
11.6.4.4
Two step undervoltage protection UV2PTUV
Main menu/Test/Function status/Voltage protection/
UnderVoltage2Step(PTUV, 27)/TUV
Displays available instances of UV2PTUV with several measurements per
instance. The measurement data includes operate/trip signals and start signals.
11.6.4.5
Voltage differential protection VDCPTOV
Main menu/Test/Function status/Voltage protection/VoltageDiff(PTOV,60)/
VDC
Displays the output data of VDCPTOV.
11.6.5
Frequency protection
The measurements generated by the Underfrequency, Overfrequency and Rate-of-
change of frequency functions are available under the paths outlined below.
Section 11
1MRK 511 188-UEN C
Test the IED
74
Operator's manual
