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.
11.6.5.1
Rate-of-change frequency protection SAPFRC
Main menu/Test/Function status/Frequency protection/
RateOfChangeOfFrequency(PFRC)/SAPFRC:x
Displays available instances of SAPFRC with measurement data for trip and start
signals. There is also a restore signal for load restoring purposes, a start duration
time and a blocking indication caused by a drop in voltage.
11.6.6
Multipurpose protection
The data generated by the multipurpose function comprises various trip and start
signals, block of second harmonic detection, various measured current values and
the angle between current and voltage.
11.6.6.1
General current and voltage protection CVGAPC
Main menu/Test/Function status/Multipurpose protection/
GeneralCurrentVoltage(GAPC)/CVGAPC:x
Displays available instances of CVGAPC with a number of output quantities per
instance. These include error signals from overcurrent functions, trip and start
signals from overcurrent, undercurrent, overvoltage and undervoltage. There is a
block signal caused by second harmonic detection. The directional mode of OC1
and OC2 is shown as is low voltage for directional polarization. The current and
voltage as well as measured current multiplied by cos Phi and the angle between
voltage and current are also shown here.
11.6.7
Control
There are large amounts of output data from the control functions. The main
categories of data are found under Autorecloser and Apparatus control. Apparatus
control has by far the largest amount of data since this includes all the interlocking
information for several different breaker arrangements.
11.6.7.1
Apparatus control
Interlocking SCILO
Main menu/Test/Function status/Control/Apparatus control/Interlocking/
SCILO:x
1MRK505209-UEN E
Section 11
Test the IED
75
Operator's manual
