Current Transformer

Current transformers (CTs) are devices used in electrical systems to measure and monitor the current flowing through a conductor. They are part of the supply class "Coils And Transformers" in the supply group "Electrical And Electronic Equipment Components."

CTs are typically used in power distribution systems to step down high currents to a level that can be safely measured by instruments or protective relays. They consist of a primary winding, which is connected in series with the conductor carrying the current to be measured, and a secondary winding, which is connected to the measuring or monitoring device.

The primary winding of a CT is designed to have a low resistance and is capable of carrying the full load current. The secondary winding, on the other hand, has a large number of turns and is connected to a burden resistor or a measuring device. The turns ratio between the primary and secondary windings determines the current transformation ratio of the CT.

When current flows through the primary winding, it induces a proportional current in the secondary winding. This secondary current is then used for measurement or monitoring purposes. CTs are designed to accurately reproduce the primary current waveform and magnitude in the secondary winding, while providing electrical isolation between the primary and secondary circuits.

CTs are commonly used in applications such as power monitoring, energy management, fault detection, and protection. They are essential components in electrical systems, ensuring accurate measurement and safe operation.

In summary, current transformers are devices used to measure and monitor electrical currents in power distribution systems. They are part of the "Coils And Transformers" supply class in the "Electrical And Electronic Equipment Components" supply group.