GE t60 Instruction Manual page 406
Ur series transformer protection system
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Also See for t60:
- Instruction manual (796 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (698 pages)
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6.3 METERING
6
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
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.
6-18
SRC 1
DMD IB DATE:
MESSAGE
2001/07/31 16:30:07
SRC 1
DMD IC:
MESSAGE
0.000
A
SRC 1
DMD IC MAX:
MESSAGE
0.000
A
SRC 1
DMD IC DATE:
MESSAGE
2001/07/31 16:30:07
SRC 1
DMD W:
MESSAGE
0.000
W
SRC 1
DMD W MAX:
MESSAGE
0.000
W
SRC 1
DMD W DATE:
MESSAGE
2001/07/31 16:30:07
SRC 1
DMD VAR:
MESSAGE
0.000
var
SRC 1
DMD VAR MAX:
MESSAGE
0.000
var
SRC 1
DMD VAR DATE:
MESSAGE
2001/07/31 16:30:07
SRC 1
DMD VA:
MESSAGE
0.000
VA
SRC 1
DMD VA MAX:
MESSAGE
0.000
VA
SRC 1
DMD VA DATE:
MESSAGE
2001/07/31 16:30:07
METERING
SOURCE SRC 1
SRC 1
FREQUENCY:
0.00 Hz
settings). The signal used for frequency estimation is low-pass filtered. The
POWER SYSTEM
T60 Transformer Protection System
SETTINGS
CLEAR RECORDS
CLEAR DEMAND RECORDS
FREQUENCY
SETTINGS
SYSTEM SETUP
6 ACTUAL VALUES
SYSTEM SETUP
SIGNAL
SETTINGS
PRODUCT SETUP
command.
).
SIGNAL SOURCES
GE Multilin
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