What is current transformer.

Question

Accepted Answer

A current transformer is a device used to measure or monitor electric current in high voltage systems.

It is a type of instrument transformer that steps down high current to a lower value suitable for measurement.
It consists of a primary winding and a secondary winding, with the primary winding connected in series with the current to be measured.
The secondary winding is connected to a measuring or monitoring device.
The current ratio between the primary and secondary winding determines the transformation ratio of the current transformer.
Current transformers are commonly used in power systems for protection, metering, and control purposes.
For example, in a power distribution network, current transformers are used to measure the current flowing through transmission lines or to provide inputs to protective relays.
They are designed to accurately reproduce the primary current waveform and provide electrical isolation between the primary and secondary circuits.
Current transformers are typically used in conjunction with voltage transformers to measure both current and voltage in power systems.

Accepted Answer

It is used to measure line current in amps.

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