There are a lot of people who always wonder which one is better between delta and wye. Delta connection is known to be more reliable when it comes to its connectivity and reliability. If in case there are some failures with the connections, you can be sure that full voltage can still be expected.
One advantage that the wye connection will have over the Delta connection is it will have the ability to provide multiple voltages. This can be done without the need to make use of any other additional transformers. There are some transformers that make use of both delta and wye.
This is called the Delta Wye Transformer. For this type of transformer, the Delta will be the primary, and the Wye will become the secondary.