Synchrocheck; Tracking Frequency; Flexelements - GE L90 Instruction Manual

6 ACTUAL VALUES
PATH: ACTUAL VALUES METERING

SYNCHROCHECK 1

MESSAGE
MESSAGE
The actual values menu for synchrocheck 2 is identical to that of synchrocheck 1. If a synchrocheck function setting is "Dis-
abled", the corresponding actual values menu item will not be displayed.
PATH: ACTUAL VALUES METERING

TRACKING FREQUENCY

The tracking frequency is displayed here. The frequency is tracked based on configuration of the reference source. The
is based upon positive sequence current phasors from all line terminals and is synchronously
TRACKING FREQUENCY
adjusted at all terminals. If currents are below 0.125 pu, then the
PATH: ACTUAL VALUES METERING
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 (Sheet 1 of 2)
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)
87L SIGNALS
(Op Square Curr IA, IB, and IC)
(Rest Square Curr IA, IB, and IC)
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
dcmA
FREQUENCY
PHASE ANGLE
POWER FACTOR
RTDs
SOURCE CURRENT
SOURCE ENERGY
(SRC X Positive and Negative
Watthours); (SRC X Positive and
Negative Varhours)
SOURCE POWER
GE Multilin
SYNCHROCHECK SYNCHROCHECK 1(2)
SYNCHROCHECK 1 DELTA
VOLT: 0.000 V
SYNCHROCHECK 1 DELTA
PHASE: 0.0°
SYNCHROCHECK 1 DELTA
FREQ: 0.00 Hz
TRACKING FREQUENCY
TRACKING FREQUENCY:
60.00 Hz

FLEXELEMENTS

FLEXELEMENT 1(8)
FLEXELEMENT 1
OpSig: 0.000 pu
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)
BASE = Squared CT secondary of the 87L source
× cycle
2
BASE = 2000 kA
BASE = maximum value of the
DCMA INPUT MAX
under the +IN and –IN inputs.
f = 1 Hz
BASE
ϕ
= 360 degrees (see the UR angle referencing convention)
BASE
PF = 1.00
BASE
BASE = 100°C
I = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
E = 10000 MWh or MVAh, respectively
BASE
P = maximum value of V
BASE BASE
L90 Line Current Differential System
6.3.5 TRACKING FREQUENCY
is used.
NOMINAL FREQUENCY
setting for the two transducers configured
× I
for the +IN and –IN inputs
BASE
6.3 METERING
6.3.4 SYNCHROCHECK
6.3.6 FLEXELEMENTS™
6-19
6