In the context of transformers, what does CT stand for?

The term CT in the context of transformers refers to Current Transformer. Current Transformers are specialized devices used in electrical systems to measure alternating current (AC). They work by providing a scaled down representation of the current flowing through a conductor, allowing for safe monitoring and measurement without having to directly measure high currents that could be dangerous.

Current Transformers operate on the principle of electromagnetic induction, where the primary winding experiences the current to be measured, and the secondary winding generates a lower, proportional current that is safe to read through typical instrumentation. This capability is essential in various applications, including protective relays and metering in electrical installations.

Understanding the importance of Current Transformers helps linemen and electrical professionals effectively monitor power systems, assess load conditions, and diagnose potential issues, all while adhering to safety protocols.