There are several types of current transducers, each suitable for different applications:

Current Transformers (CTs): CTs are commonly used for high-current applications in power systems and electrical equipment. They have a primary winding that encircles the current-carrying conductor, and a secondary winding that provides an output current proportional to the primary current. CTs are mainly used for current measurement and protection purposes in power distribution systems.

Hall Effect Sensors: Hall effect current transducers use the Hall effect to measure current. They consist of a Hall effect sensor and a magnetic core. When a current flows through the conductor, it generates a magnetic field that affects the Hall sensor's output voltage. Hall effect sensors are often used in low- to medium-current applications and offer non-intrusive current sensing.

Rogowski Coils: Rogowski coils are flexible, open-loop current transducers suitable for measuring AC currents in power systems. They are lighter and easier to install than traditional CTs and do not require core saturation. Rogowski coils are often used in applications where space and weight are crucial.

Closed-loop Hall Effect Current Transducers: These transducers have a built-in magnetic core and use the Hall effect to measure current. They offer better linearity and accuracy compared to open-loop Hall effect sensors.

Current transducers find applications in various industries, including power distribution, renewable energy, motor control, industrial automation, and electric vehicle systems. They are essential for monitoring, control, and protection purposes, ensuring the safe and efficient operation of electrical systems and equipment. Proper selection and calibration of current transducers are essential to achieve accurate and reliable current measurements.