Omicron Lab CT Analyzer User Manual page 225

Short Guide for Multi-Ratio CT Testing Using the CT SB2
The MR-Config. card displays the test configuration defined prior to the test.
Figure 4-4 MR-Config. card
The MR-Results card displays detailed data for the individual tap combinations
of the multi-ratio CT. You can switch this card to display the ratio results (e.g.
winding ratio, ratio and phase error, etc.) or the excitation results (e.g. V
etc.).
For a detailed description of this card, please refer to section 6.3 on page 44.
The CT Analyzer calculates the results for the operating burden (parameter
"Burden" in the CT-Object card) and for the nominal burden (parameter "VA" in
the CT-Object card). Depending on the burden selected, the MR-Results card
shows the results calculated with the nominal burden or calculated with the
operating burden.
Figure 4-5 MR-Results card showing ratio results (left) and excitation
results (right)
Hint: It is possible to simulate the performance of the CT for other burden values
than the nominal burden by changing the "Burden" value in the CT-Object card.
The CT Analyzer then automatically performs a recalculation of the results
displayed in the MR-Results card for the new operating burden.
In the CT-Object card, enter the "Location" and "Object" details and save the
test (use the cursor keys to scroll within the card and select the edit fields).
The assessment of the measurement results for the full tap combination can
be viewed on the Assessment card.
If desired, you can view the measurement results for the tap in use selected in
the MR-Config. card by viewing the Resistance card, the Excitation card and
the Ratio card.
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