Automatic Test Execution; After The Test Is Finished - Omicron CT SB2 User Manual

CT SB2 User Manual
Table 6-3: Data to be specified in the MR-Config card (continued)
Parameter
Test
4. Start the test by pressing the
indicate that the CT test is running.
6.3

Automatic test execution

After starting the test, CT Analyzer first checks the communication with the CT SB2 switch box via the
serial interface. CT Analyzer then checks the input/output wiring between CT Analyzer and CT SB2 and,
prior to each measurement, the corresponding wiring from CT SB2 to the test object required for this
particular measurement. If CT Analyzer detects any missing or faulty connections, a corresponding error
message is displayed.
The currently active input/output of the CT SB2 switch box is indicated by a green LED on the CT SB2
front panel.
1. CT Analyzer measures the secondary winding resistance of the CT for each tap combination.
2. CT Analyzer measures the excitation curve and determines the knee point and other important CT
data for each tap combination.
3. CT Analyzer measures the actual current ratio, the winding ratio, the ratio error and the phase error
for each tap combination.
4. When the test is over, the red LED stops flashing and the green LED is on.
CT Analyzer displays a "Test finished" message showing the status of the test execution and the
overall test assessment. Press any key on the keyboard to close this message.
6.4

After the test is finished

After the test is finished, the CT-Object card is displayed, showing the CT data (see Figure 6-3).
Figure 6-3: CT-Object card after the test is finished
30
Description
Use this column to select the tap combinations you actually want to measure
during the CT test. You can enable or disable each single tap combination
individually (disabling the full tap combination is not possible). Disabling unused
tap combinations reduces the test duration.
key on CT Analyzer. The red LED on CT Analyzer flashes to
OMICRON