METERING
If synchrocheck or a setting is "Disabled," the corresponding actual values menu item does not display.
6.4.5 Tracking frequency
ACTUAL VALUES METERING TRACKING FREQUENCY
TRACKING FREQUENCY
The tracking frequency displays here. The frequency is tracked based on configuration of the reference source. The
TRACKING FREQUENCY
at all terminals. If currents are below 0.125 pu, then the
6
6.4.6 Frequency rate of change
ACTUAL VALUES METERING FREQUENCY RATE OF CHANGE 1(2)
FREQUENCY RATE
OF CHANGE 1
The metered frequency rate of change for the frequency rate of change elements is shown here.
6.4.7 FlexElements
ACTUAL VALUES METERING FLEXELEMENTS FLEXELEMENT 1(8)
FLEXELEMENT 1
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
Base unit
87L SIGNALS
(Local IA Mag, IB, and IC)
(Diff Curr IA Mag, IB, and IC)
(Terminal 1 IA Mag, IB, and IC)
(Terminal 2 IA Mag, IB and IC)
6-22
SYNCHROCHECK 1
V1 MAG: 0.000 kv
SYNCHROCHECK 1
V1 ANG: 0.0°
SYNCHROCHECK 1
V2 MAG: 0.000 kV
SYNCHROCHECK 1
V2 ANG: 0.0°
SYNCHROCHECK 1 PROJ
V2 MAG: 0.000 kV
SYNCHROCHECK 1 PROJ
V2 ANG: 0.0°
SYNCHROCHECK 1 PROJ
DELTA_PHASE: 0.0°
SYNCHROCHECK 1 PROJ
SYNSCP D_PH: 0.0°
TRACKING FREQUENCY:
60.00 Hz
is based on positive sequence current phasors from all line terminals and is synchronously adjusted
FREQUENCY RATE OF
CHANGE1: 0.00 Hz/s
FLEXELEMENT 1
OpSig:
Description
I
= maximum primary RMS value of the +IN and –IN inputs
BASE
(CT primary for source currents, and 87L source primary current for line differential currents)
is used.
NOMINAL FREQUENCY
0.000
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES