Running The Automatic Test And Connecting Ct Analyzer - Omicron CT SB2 User Manual

Table 5-2: Further information to be specified data in the CT-Object card
Parameter Description
LV CT Test Can be used to change the measuring mode for testing very small CTs with very
Mode low knee point voltages.
"Toggle Mode": Normal measuring mode of CT Analyzer.
"Sinus Mode": Applies sinusoidal test signals with rated frequency to the CT. This
is only applicable for CTs with low knee-point voltages.
Refer to table 8-4 on page 92 for detailed information on the parameters.
4. If you enabled the Burden test card in step 2., display the Burden card and specify the test current
for the burden measurement. Use the default test current derived from the I
the CT-Object card or enter a test current of your choice to the "I-test" parameter.
Figure 5-5: Defining the test current in the Burden card
5.2.3

Running the automatic test and connecting CT Analyzer

1. Start the test by pressing the
2. If you enabled the Burden test card in section 5.2.2, step 2. on page 55 a message is displayed,
asking you to change the wiring for the burden test. Connect the burden as described in chapter 3.
► Make sure that the red LED on CT Analyzer is off.
► Refer to section 3.4.2 on page 29 for detailed information on how to connect CT Analyzer for the
burden test.
► You can display the connection diagram by pressing the
message is displayed.
Figure 5-6: Burden test: Wiring check message (left) and wiring diagram (right)
3. Press the Start Test soft key to execute the automatic burden test.
Note: If you do not want to perform the burden test, press Skip Test to skip the burden test and
continue with the next test step or Cancel Test to abort the complete test.
Note: If the "Continuous burden measurement" option is enabled in the Settings (see section
6.8.3 on page 71), the burden test has to be stopped manually by pressing the
OMICRON
CT testing in Advanced CT Test mode ("New Advanced CT Test")
key. The red LED flashes to indicate that the CT test is running.
Press
previously entered in
sn
? key while the wiring check
key.
57