Burden Card; Test Settings - Omicron Lab CT Analyzer User Manual

CT Analyzer User Manual
6.3

Burden Card

6.3.1

Test Settings

100
The Burden card 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
If a current other than I
current can be entered in the "I-test" parameter field.
No soft keys are available in the Burden card.
Figure 6-4 Burden card
If the CT Analyzer cannot reach the desired test current I
message is displayed in the right-hand corner of the status line.
The following settings can be done 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.
should be used to test the burden, the desired test
sn
Value for I-test
in Burden card
"?" none
e.g. "?" e.g. 5A
e.g. 5A none
e.g. 5A e.g. 1A
) at nominal frequency.
sn
, an overload
test
Test current used for
burden test
1A
5A (value of I-test)
5A (value of I-sn)
1A (value of I-test)