Tracking Frequency - GE T35 Instruction Manual

Transformer management relay
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6.3 METERING
# FREQUENCY
# SRC 1
Six identical Source menus are available. The "SRC 1" text will be replaced by whatever name was 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
final frequency measurement is passed through a validation filter that eliminates false readings due to signal distortions and
transients.
6
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
6-14
SRC 1
APPARENT PWR
MESSAGE
φa:
0.000
SRC 1
APPARENT PWR
MESSAGE
φb:
0.000
SRC 1
APPARENT PWR
MESSAGE
φc:
0.000
SRC 1
POWER FACTOR
MESSAGE
3φ:
SRC 1
POWER FACTOR
MESSAGE
φa:
SRC 1
POWER FACTOR
MESSAGE
φb:
SRC 1
POWER FACTOR
MESSAGE
φc:
SRC 1
FREQUENCY:
0.00 Hz
!"
SETTINGS
SYSTEM SETUP
!"
settings). The signal used for frequency estimation is low-pass filtered. The
POWER SYSTEM
!"
!"
METERING
TRACKING FREQUENCY
TRACKING FREQUENCY:
60.00 Hz
is based upon positive sequence current phasors from all line terminals and is synchronously
T35 Transformer Management Relay
VA
VA
VA
1.000
1.000
1.000
1.000
!"
SIGNAL SOURCES
NOMINAL FREQUENCY
6 ACTUAL VALUES
).
6.3.4 TRACKING FREQUENCY
is used.
GE Multilin

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