A thorough understanding of Delta and Wye service transformers, their primary and secondary windings, and their windings’ voltages, will help HVACR service technicians in their understanding of ...

Wye and delta are the two primary three-phase power configurations, each with specific wiring layouts, voltage relationships, and best-fit applications. Wye offers a neutral for dual-voltage ...

The article in the March 3 issue of The News dealt with the secondary windings of a Delta service transformer with one winding center-tapped to the ground. The article stated that the power-leg or ...

It seems that no matter how many times our experts address the topic of triplen, there's always another facet of this disruptive harmonic current to be discussed. This month, Editorial Director John ...

In the original version of this article, the second figure contained an error. The image has been updated. It’s important for engineers to have a good, working ...