What is the function of a current transformer in an electrical system?

The function of a current transformer in an electrical system is to transfer large currents to manageable levels. This is achieved by stepping down the current flowing through a conductor to a lower, proportional value that is easier to measure and analyze. Current transformers enable monitoring and protection of electrical systems without exposing measurement devices to high currents directly. By producing a reduced current that is proportional to the primary current, technicians can safely observe and evaluate the electrical characteristics of the system.

While converting AC to DC is related to different types of devices like rectifiers, voltage regulation pertains to devices designed to maintain voltage levels, and providing backup power supply is the role of devices like uninterruptible power supplies or generators, none of these functions align with the specific purpose of a current transformer.