A transformer is an electrical device which is basically used to convert the voltage of one magnitude to another without bringing any changes to the frequency. It also brings changes to voltage without bringing any change to the frequency. It reduces high voltage currents to lower value and provides convenient electrical current flow with the help of standard ammeter.
CT consists of either one or few primary winding turns due to which it has also been called as series transformer. One can find variety of current transformers which is an instrument used for measuring and protecting devices. Here is highlighted few important types of transformer.
Types of Current Transformer!
Wound transformer- In this kind of transformer, the primary winding is physically connected in series with the conductor that carries the measured current flowing in the circuit. However, the magnitude of the secondary current has been determined by the turns of the current transformer.
Toroidal transformer- Instead of containing primary winding, the toroidal CT carries the flowing current. Few have split core which permits it to get opened, installed and closed. All these actions have been performed without disconnecting from the circuit.
Bar type Station Transformer - The cable or bus bar of main circuit has been used in bar type transformer as the primary winding. It is high operating voltage which has been bolted to current carrying device. Find more at amorphousbus.
Related Reading: Miniature Current Transformers,Amorphous Inductance,Magnetic Materials,Electric Current Transformers