What is an Electrical Transformer and How Does It Work?
- Electric transformers are passive, electrical machines that use magnetic flux to induce an electromotive force. Transformers are used to step-up or step-down voltages between electrical systems. Other types of transformers such as isolation transformers do not change the voltage but provide a means of isolating circuits.
- Three-phase transformers are a type of transformers that are used to change voltages of electrical systems with three phases. There are different types of configurations, namely: star-star, delta-delta, star-delta, and delta-star.
- Other types of configurations resulted from the modification of the basic star and delta windings. The most common are open delta, Scott, and high-leg types of connections.
- Core-type transformers act as a single-core, three-phase transformers where each phase is magnetically coupled to each other.
- Shell-type transformers act as three separate single-phase transformers since their magnetic fields are independent of one another.