CT Analyzer User Manual
116 OMICRON
8.6.1 Available soft keys
8.6.2 Test settings
The upper part of the Excitation card shows the test settings adjusted in the CT-Object card.
8.6.3 Test results
The test results are displayed in the lower part of the Excitation card. The display of test results depends
on the following:
• The standard defined in the CT-Object card, the class and the type of CT (metering or protection CT).
The following tables provide an overview of which test results (parameters) are displayed for which
standard.
• The burden selected with the soft key (Results with Nom. Burden or Results with Op. Burden).
Depending on the selected burden, the Excitation card shows the results either calculated with the
nominal burden (Results with Nom. Burden) or calculated with the operating burden (Results with
Op. Burden).
The displayed pages are identical to a large extend, except the labeling of the burden parameter field
("VA" in case of nominal burden and "Burden" in case of operating burden) and the result values.
Table 8-17: Soft keys available in the Excitation card
Soft key Description
or
Displays the results related to the nominal burden of the CT.
Displays the results related to the operating burden of the CT.
Opens the excitation graph page (refer to section 8.6.4 on page 121).
Opens the AL error graph page (refer to section 8.6.5 on page 124).
This graph is part of Chinese standards and shows the maximum possible primary current
(K * I
pn
) that can flow over a specific burden without exceeding the accuracy limit.
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