Tracking Frequency; Flexelements - GE L30 Instruction Manual

6.3 METERING
PATH: ACTUAL VALUES
 TRACKING FREQUENCY

The tracking frequency is displayed here. The frequency is tracked based on configuration of the reference source. The

TRACKING FREQUENCY

adjusted at all terminals. If currents are below 0.125 pu, then the
PATH: ACTUAL VALUES
 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
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 ACC ARCING AMPS
(Brk X Acc Arc Amp A, B, and C)
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
6
DCmA
FAULT LOCATION
FREQUENCY
PHASE ANGLE
POWER FACTOR
RTDs
SOURCE CURRENT
SOURCE POWER
SOURCE VOLTAGE
SYNCHROCHECK
(Max Delta Volts)
6-20
 
METERING TRACKING FREQUENCY
TRACKING FREQUENCY:
60.00 Hz
is based upon positive sequence current phasors from all line terminals and is synchronously
 
METERING

FLEXELEMENTS

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
2
BASE = 2000 kA
2
× cycle
BASE = 1 kA
BASE = maximum value of the
under the +IN and –IN inputs.
BASE = Line Length as specified in Fault Report
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
P = maximum value of V
BASE
V = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
V = maximum primary RMS value of all the sources related to the +IN and –IN inputs
BASE
L30 Line Current Differential System
NOMINAL FREQUENCY

FLEXELEMENT 1(8)
× cycle
setting for the two transducers configured
DCMA INPUT MAX
× I
for the +IN and –IN inputs
BASE BASE
6 ACTUAL VALUES
6.3.5 TRACKING FREQUENCY
is used.
6.3.6 FLEXELEMENTS
GE Multilin