Test Settings And Results; Running A Residual Magnetism Measurement - Omicron CT SB2 User Manual

CT Analyzer User Manual
8.4.1

Test settings and results

The following settings and test results are displayed in the Residual Magnetism card.
Table 8-14: Test settings and results in the Residual Magnetism card
Parameter
I-sn
Residual Flux
Residual Magnetism
8.4.2

Running a residual magnetism measurement

1. Press the Select Cards soft key in the CT-Object card to open the Select Cards page. Enable the
Residual Magnetism 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 8-7: Select Cards page with Residual Magnetism test card enabled
2. If not already specified, enter the I
110
Description
Nominal secondary current of the CT as entered in the CT-Object card.
The I of the CT has to be specified prior to the execution of the residual
sn
magnetism measurement. Otherwise, a corresponding message is displayed.
Absolute value [in Vs] of the residual magnetic flux in the CT determined by
CT Analyzer.
The residual flux is always displayed after measurement, even if CT Analyzer
could not determine the residual magnetism.
Residual magnetism [in %] of the CT, calculated from the residual flux and the
maximum flux of the CT.
No value is displayed if CT Analyzer was not able to reach the knee point of the
excitation curve.
of the CT on the CT-Object card.
sn
OMICRON