Displays available instances of OEXPVPH (24) with a number of measurements perinstance. These measurements indicate whether values are out of the measuring range(ERROR) and if the overexcitation function has caused a trip (TRIP). The thermalstatus as a percentage of the trip level and the calculated time to trip are among theother outputs available here.11.6.5.3 Two step overvoltage protection OV2PTOV (59)Main menu/Test/Function status/Voltage protection/OverVoltage2Step(PTOV,59)/TOVDisplays available instances of OV2PTOV (59) with several measurements perinstance. The measurements include operate/trip and pickup signal data.11.6.5.4 Two step residual overvoltage protection ROV2PTOV (59N)Main menu/Test/Function status/Voltage protection/ResidualOverVoltage2Step(PTOV,59N)/TRVDisplays available instances of ROV2PTOV (59N) with some measurements perinstance. The measurements include operate/trip and signal data.11.6.5.5 Two step undervoltage protection UV2PTUV (27)Main menu/Test/Function status/Voltage protection/UnderVoltage2Step(PTUV,27)/TUVDisplays available instances of UV2PTUV (27) with several measurements perinstance. The measurement data includes operate/trip signals and pickup signals.11.6.5.6 Voltage differential protection VDCPTOV (60)Main menu/Test/Function status/Voltage protection/VoltageDiff(PTOV,60)/VDCDisplays the output data of VDCPTOV (60).11.6.6 Frequency protectionThe measurements generated by the Underfrequency, Overfrequency and Rate-of-change of frequency functions are available under the paths outlined below.11.6.6.1 Overfrequency protection SAPTOF (81)Main menu/Test/Function status/Frequency protection/OverFrequency(PTOF)/TOFSection 11 1MRK506276-UUS BTest the IED80Operator's manual