Tracking Frequency - GE B30 Instruction Manual

CHAPTER 6: ACTUAL VALUES
menu. For each quantity, the relay displays the demand over the most recent demand time interval, the
 DEMAND
maximum demand since the last maximum demand reset, and the time and date stamp of this maximum demand value.
Maximum demand quantities can be reset to zero with the
6.4.3.9 Frequency metering
ACTUAL VALUES  METERING  SOURCE SRC 1  FREQUENCY
 FREQUENCY
 SRC 1
The metered frequency values are displayed in this menu. The "SRC 1" text is replaced by the name programmed by the
user for the associated source (see
is measured via software-implemented zero-crossing detection of an AC signal. The signal is either a
SOURCE FREQUENCY
Clarke transformation of three-phase voltages or currents, auxiliary voltage, or ground current as per source configuration
(see the
SYSTEM SETUP  POWER SYSTEM
frequency measurement is passed through a validation filter that eliminates false readings due to signal distortions and
transients.

6.4.4 Tracking frequency

ACTUAL VALUES  METERING  TRACKING FREQUENCY
 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
System section of chapter 5 for details.
6.4.5 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
BREAKER ACC ARCING AMPS
(Brk X Acc Arc Amp A, B, and C)
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
BUS DIFFERENTIAL RESTRAINING
CURRENT
(Bus Diff Mag)
BUS DIFFERENTIAL RESTRAINING
CURRENT
(Bus Rest Mag)
DCmA
FREQUENCY
PHASE ANGLE
POWER FACTOR
RTDs
B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CLEAR RECORDS  CLEAR DEMAND RECORDS
SRC 1 FREQUENCY:

0.00 Hz
SETTINGS  SYSTEM SETUP  SIGNAL SOURCES
settings). The signal used for frequency estimation is low-pass filtered. The final
TRACKING FREQUENCY:

60.00 Hz
setting in the
SETTINGS  SYSTEM SETUP  POWER SYSTEM
FLEXELEMENT 1

OpSig: 0.000
Description
2
× cycle
BASE = 2000 kA
2
× cycle
BASE = 1 kA
I = maximum primary RMS value of the +IN and –IN inputs
BASE
(CT primary for source currents, and bus reference primary current for bus differential currents)
I = maximum primary RMS value of the +IN and – IN inputs
BASE
(CT primary for source currents, and bus reference primary current for bus differential currents)
BASE = maximum value of the DCMA INPUT MAX setting for the two transducers configured
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
METERING
command.
).
menu. See the Power
6
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