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6 ACTUAL VALUES
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
The metered values for current and power demand are displayed in this menu. The "SRC 1" text will be replaced by what-
ever name was programmed by the user for the associated source (see
).
SOURCES
The relay measures (absolute values only) the source demand on each phase and average three phase demand for real,
reactive, and apparent power. These parameters can be monitored to reduce supplier demand penalties or for statistical
metering purposes. Demand calculations are based on the measurement type selected in the
menu. For each quantity, the relay displays the demand over the most recent demand time interval, the maxi-
DEMAND
mum demand since the last maximum demand reset, and the time and date stamp of this maximum demand value. Maxi-
mum demand quantities can be reset to zero with the
i) FREQUENCY METERING
PATH: ACTUAL VALUES
METERING
FREQUENCY
SRC 1
The metered frequency values are displayed in this menu. The "SRC 1" text will be replaced by whatever name was pro-
grammed 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.
GE Multilin
SRC 1
DMD IB DATE:
2001/07/31 16:30:07
SRC 1
DMD IC:
0.000
A
SRC 1
DMD IC MAX:
0.000
A
SRC 1
DMD IC DATE:
2001/07/31 16:30:07
SRC 1
DMD W:
0.000
W
SRC 1
DMD W MAX:
0.000
W
SRC 1
DMD W DATE:
2001/07/31 16:30:07
SRC 1
DMD VAR:
0.000
var
SRC 1
DMD VAR MAX:
0.000
var
SRC 1
DMD VAR DATE:
2001/07/31 16:30:07
SRC 1
DMD VA:
0.000
VA
SRC 1
DMD VA MAX:
0.000
VA
SRC 1
DMD VA DATE:
2001/07/31 16:30:07
CLEAR RECORDS
SOURCE SRC 1
SRC 1
FREQUENCY:
0.00 Hz
SETTINGS
settings). The signal used for frequency estimation is low-pass filtered. The
POWER SYSTEM
F60 Feeder Protection System
SETTINGS
CLEAR DEMAND RECORDS
FREQUENCY
SYSTEM SETUP
SIGNAL SOURCES
6.3 METERING
SYSTEM SETUP
SIGNAL
SETTINGS
PRODUCT SETUP
command.
).
6-17
6
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