ISA T2000 - Display; Test Control; Relay Selection; Transformers Selection

DOC. SIE10110 Rev. 6 Page 16 of33
For other parameters, the accuracy is the sum of voltage, current and angle accuracies, as
applicable.
PARAMETER , DC INPUTS
DERIVED
FROM
FORMULA
UNITS
POWER, W
Iext, Vext
P= I*V
W
RESISTANCE, R
Iext, Vext
R = V/I
Ohm
With CT or VT or PT selection, the measurement follows the selected test.
3.7 DISPLAY
The graphical display has the following main features:
- pixels: 240x128
- backlight color: white
- LCD type: FSTN
- View area: 135x80 mm.
3.8 TEST CONTROL
3.8.1 Relay selection
- Manual start control:
. OFF: main outputs are not generated; Vac aux is generated, and it can be either the pre-
fault value or the fault value, according to selections; VDC aux is generated.
. ON: main outputs are generated; Vac aux has the fault value. In this situation it is possible
to verify and memorize the relay threshold, both trip and reset.
. From OFF to ON + time: main outputs are generated and the timer starts according to
selections; as STOP is sensed, main outputs are removed and the elapsed time displayed and
test result can be memorized.
. From ON to OFF + time: main outputs are removed the timer starts according to selections;
as STOP is sensed, the elapsed time is displayed and test result can be memorized.
- Other test control selections:
. Momentary: in ON mode, main outputs are generated until the push-button is pressed;
. Timed: main outputs are generated for the programmed maximum time;
. External. This mode allows for the synchronization of more T3000;
. OFF delay: fault parameters can be maintained for the specified time after relay trips: this
allows simulating the circuit breaker delay.
- Save selections:
. Automatic saving.
. Test data can be saved after confirmation. After relay trip, pressing the multi-function knob
it is possible to save the test result.
3.8.2 Transformers selection
- The LED by the side of the selected output turns on: this helps the operator not to mistake test
connections.
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