6-20 D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
METERING CHAPTER 6: ACTUAL VALUES
6
If synchrocheck or a setting is "Disabled," the corresponding actual values menu item does not display.
6.4.4 Tracking frequency
ACTUAL VALUES METERING TRACKING FREQUENCY
The tracking frequency displays here. The frequency is tracked based on the selection of the reference source with the
FREQUENCY AND PHASE REFERENCE setting in the SETTINGS SYSTEM SETUP POWER SYSTEM menu. See the Power
System section of chapter 5 for details.
6.4.5 Frequency rate of change
ACTUAL VALUES METERING FREQUENCY RATE OF CHANGE 1(2)
The metered frequency rate of change for the frequency rate of change elements is shown here.
6.4.6 FlexElements
ACTUAL VALUES METERING FLEXELEMENTS FLEXELEMENT 1(8)
The operating signals for the FlexElements are displayed in pu values using the following definitions of the base units.
Table 6-2: FlexElement base units
SYNCHROCHECK 1 PROJ
V2 ANG: 0.0°
SYNCHROCHECK 1 PROJ
DELTA_PHASE: 0.0°
SYNCHROCHECK 1 PROJ
SYNSCP D_PH: 0.0°
TRACKING FREQUENCY
TRACKING FREQUENCY:
60.00 Hz
FREQUENCY RATE
OF CHANGE 1
FREQUENCY RATE OF
CHANGE1: 0.00 Hz/s
FLEXELEMENT 1
FLEXELEMENT 1
OpSig: 0.000
Base unit Description
BREAKER ACC ARCING AMPS
(Brk X Acc Arc Amp A, B, and C)
BASE = 2000 kA
2
× cycle
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
BASE = 1 kA
2
× cycle
DCmA BASE = maximum value of the DCMA INPUT MAX setting for the two transducers configured
under the +IN and –IN inputs.
FAULT LOCATION BASE = Line Length as specified in Fault Report
FREQUENCY f
BASE
= 1 Hz
FREQUENCY RATE OF CHANGE df/dt
BASE
= 1 Hz/s
PHASE ANGLE ϕ
BASE
= 360 degrees (see the UR angle referencing convention)
POWER FACTOR PF
BASE
= 1.00
RTDs BASE = 100°C
SOURCE CURRENT I
BASE
= maximum nominal primary RMS value of the +IN and –IN inputs
SOURCE POWER P
BASE
= maximum value of V
BASE
× I
BASE
for the +IN and –IN inputs
SOURCE VOLTAGE V
BASE
= maximum nominal primary RMS value of the +IN and –IN inputs
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