Omicron CPC 100 - Measuring a CT Ratio at Different Current Magnitudes

CPC 100 V1.41
8 - 14
Measuring a CT Ratio at Different Current
Magnitudes
Example of a sequence of five states to measure the ratio of a current
transformer. To do so, different current amplitudes (5%, 20%, 50%, 100% and
120% of nominal value) are injected into the CT, and the CT’s secondary current
is measured at CPC 100 current input IAC/DC.
Figure 9:
Setup to measure the
ratio of a current
transformer at different
current magnitudes
Parameters of the states 1 ... 5
Each of the five states injects a current with a different magnitude into the CT’s
primary winding. There is no trigger specified, so each state runs exactly 2s.
AHzTriggerThresh s
20 (= 5%) 50.00 No Trigger n/a 2.000
80 (= 20%) 50.00 No Trigger n/a 2.000
200 (= 50%) 50.00 No Trigger n/a 2.000
400 (= 100%) 50.00 No Trigger n/a 2.000
480 (= 120%) 50.00 No Trigger n/a 2.000