Power transformer home » Transformer Articles » Current Transformer Know -How:

Current Transformer Know -How:

A current transformer is an electrical apparatus that is fashioned to provide a flow of current in the secondary circuit which is precisely perpendicular to the current flowing in its primary circuit. To gauge current and monitor the operation of the power network Current transformers are used extensively and are characteristically defined by its current ratio from primary winding to secondary winding.

Current transformers are the most regularly used in metering and shield relaying in the electrical power industry where they help the safest requirement of a huge currents, often in the existence of high voltages on the circuit. The current transformer safely isolates to measure and to control a circuitry from the high voltages principally present on the circuit is being calculated. Current transformers are regularly maintained by passing a single primary turn under a well-insulated toroidal core with numerous turns of wire wrapped.

Current transformers are used for measuring the flow of current and monitoring the operation of the power used. The Current transformer is basically defined by its current ratio flowing from primary circuit to secondary circuit. There are some factors that improve the current transformer accuracy. They are rating factor, load, external electromagnetic fields, temperature and physical configuration of Current Transformer.