Omicron Lab CT Analyzer, User Manual

Page: 103 / 254

101
The CT Analyzer Test Cards
6.3.2 Test Results
The lower part of the Burden card shows the results of the burden test after the
test is finished.
6.3.3 Connecting the Burden and Running the Burden Test
1. Press the Select Cards key soft in the CT-Object card to open the Select
Cards page. Enable the Burden test card in the Select Cards page. Press
the Back soft key to apply your test card selection and return to the
CT-Object card.
Figure 6-5 Select Cards page with Burden test card enabled
2. In the Burden card, use the default test current or enter the desired test
current to parameter "I-test".
3. Execute the burden test as described in section 4.3 on page 52.
Possible test steps following the burden test:
• Residual magnetism measurement, see section 6.4.2 on page 103.
• Primary resistance measurement, see section 4.3, steps 4. & 5. on page 53.
• CT test, see section 4.3, steps 6. to 11. on page 54, and sections 4.4 on page
55 and 4.5 on page 57.
Parameter Description
I-meas Current measured during the test.
V-meas Voltage measured at the load during the test.
Burden /
Cos
ϕ
Burden and cos ϕ calculated from the measured quantities.
If the rated secondary current is not known, the result field will
only show "n/a" as long as I
sn
is not defined.
Z Impedance of the burden calculated from the measured
quantities.