What is C.T, why it is used and what care should be taken
for that while connecting?
Answer Posted / ramesh
It is called as current transformer which is used to
transform higher range of current to lower range. It's
output is used as an input to protection circuit and
mearsuring instruments as the protection circuit and
measuring instruments are designed for lower range of
currents. The secondary of current transformer shall be
connected in such a way that it should be get open under
any circumstances. In case the secondary circuit opens,
then the CT gets blasted due to break down of insulation as
very high voltage gets induced in the secondary.
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