Instruction Manual
EZCT-2000A USER’S MANUAL REV 1
96
Figure 24 show a CT with 5 taps. The turns-ratio of the CT can be measured by treating the CT
secondary winding as an auto-transformer. When using this method, the effect of the shunt
reactor winding is totally eliminated.
The turns-ratio measured by the EZCT or any electronic TTR is calculated as follows:
Ratio =
Figure 24
From the name plate of the CT show in table below, the turns-ration can be calculated as
follows:
Ratio Terminal
1200-5A X1-X5
1000-5A X2-X5
Calculated Ratio =
()
(
=
= 1.20