There are many different types of transformers used in electrical power generation and industrial work today. One of the most common and efficient transformers available today is 3 phase transformers. Essentially, 3 phase transformers are iron cores with 3 legs, with each leg having both a primary and a secondary winding. The power company will generate power through the rotation of 3 coils through a magnetic field. For such a transformer to work properly and supply the needed voltage, the coils must be connected in the proper sequence.
How Is Such a Transformer Constructed?
3 phase transformers are constructed so that three single phase transformers can operate on a single core. There are advantages to using such a transformer versus a single-phase one. One major advantage with a 3 phase is that the weight, cost, and size will be smaller than using three individual single phase transformers. As a result, the electricity is much more efficiently produced.
Types of Transformer Combinations
There are four types of transformer combinations, though wye to wye combinations are extremely rare because this type of combination can cause harmonic issues. The other three types are more common, particularly the delta to wye combination, as this combination is used the most often in both commercial and industrial processes. The other two types of combinations are delta to delta, commonly used in industrial processes, while the wye to delta combination allows for high amounts of electricity.
Benefits
Due to the fact, all three wires can carry the same amount of current and the power transfer is delivered in a consistent load, 3 phase transformers are often used to deliver electric power to commercial and industrial buildings. Those transformers in a delta connection can also provide reliable power to neighborhoods and businesses close to the power substation.
