The primary winding of a current transformer is connected in _________ with the line carrying the main current and the secondary winding is directly connected across ___________.

Current Transformer:

• The Current Transformer ( C.T. ), is a type of “instrument transformer” that is designed to produce an alternating current in its secondary winding which is proportional to the current being measured in its primary.
• The transformer's primary winding is physically connected in series with the conductor that carries the measured current flowing in the circuit.
• Generally, current transformers and ammeters are used together as a matched pair in which the design of the current transformer is such as to provide a maximum secondary current corresponding to a full-scale deflection on the ammeter.
• Current transformers “step-down” current levels from thousands of amperes down to standard output of a known ratio to either 5 Amps or 1 Amp for normal operation.