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8.3
Burden card
The Burden card of the Advanced CT Test mode is only available if it is enabled on the Select Cards
page (Default Test Card Selection or Select Cards soft key in the CT-Object card).
Using the Burden card, a current transformer's secondary burden impedance can be measured with the
selected secondary current (I
the burden, the desired test current can be entered in the "I-test" parameter field.
No soft keys are available in the Burden card.
Figure 8-4: Burden card
If CT Analyzer cannot reach the desired test current I
hand corner of the status line.
8.3.1
Test settings
The following settings can be done in the Burden card.
Table 8-12: Test settings in the Burden card
Parameter
Description
I-test
Test current used to measure the external burden.
After clearing the test results or when starting a new CT test, the test current is automatically
chosen as follows:
Value for I-sn
in CT-Object card
It is possible to overwrite the default test current using the keyboard (0.1 to 5A). Always
verify the test current settings prior to starting the test in order to avoid damaging of
the CT or other equipment.
OMICRON
) at nominal frequency. If a current other than I
sn
Press to open the main menu
Value for I-test
in Burden card
"?"
e.g. "?"
e.g. 5A
e.g. 5A
e.g. 5A
e.g. 1A
Test cards for Advanced CT Test mode
, an overload message is displayed in the right-
test
Test current used for
burden test
none
5A (value of I-test)
none
5A (value of I-sn)
1A (value of I-test)
should be used to test
sn
1A
107
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