Frequency Rate Of Change; Flexelements - GE F60 Instruction Manual

6 ACTUAL VALUES
PATH: ACTUAL VALUES METERING
FREQUENCY RATE
OF CHANGE
MESSAGE
MESSAGE
MESSAGE
The metered frequency rate of change for the frequency rate of change elements is shown here.
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
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
dcmA
FREQUENCY

FREQUENCY RATE OF CHANGE

PHASE ANGLE
POWER FACTOR
RTDs
SENSITIVE DIR POWER
(Sns Dir Power)
SOURCE CURRENT
SOURCE ENERGY
(Positive and Negative Watthours,
Positive and Negative Varhours)
SOURCE POWER
SOURCE THD & HARMONICS
SOURCE VOLTAGE
SYNCHROCHECK
(Max Delta Volts)
GE Multilin
FREQUENCY RATE OF CHANGE
FREQUENCY RATE OF
CHANGE 1: 0.00 Hz/s
FREQUENCY RATE OF
CHANGE 2: 0.00 Hz/s
FREQUENCY RATE OF
CHANGE 3: 0.00 Hz/s
FREQUENCY RATE OF
CHANGE 4: 0.00 Hz/s

FLEXELEMENTS

FLEXELEMENT 1(8)
FLEXELEMENT 1
OpSig: 0.000 pu
2
× cycle
BASE = 2000 kA
BASE = maximum value of the DCMA INPUT MAX
under the +IN and –IN inputs.
f = 1 Hz
BASE
df/dt = 1 Hz/s
BASE
ϕ
= 360 degrees (see the UR angle referencing convention)
BASE
PF = 1.00
BASE
BASE = 100°C
= maximum value of 3 × V
P
BASE
configured for the sensitive power directional element(s).
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
BASE = 1%
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
F60 Feeder Protection System
6.3.6 FREQUENCY RATE OF CHANGE
setting for the two transducers configured
× I
for the +IN and –IN inputs of the sources
BASE BASE
× I
for the +IN and –IN inputs
BASE
6.3 METERING
6.3.7 FLEXELEMENTS™
6-21
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