3-Phase Transformers

Three-phase transformers are used to change values of voltages in three-phase power distribution systems.While it is possible to bundle single-phase transformers together for using in three-phase power distributions, dedicated three-phase transformers are built specifically for those tasks.

Advantages of 3-Phase Transformers

There are several advantages to using three-phase transformers, including the following:

• Three-phase transformers use less material, weigh less, and are more compact than single-phase bundles.

• Three-phase transformers increase reliability.

• Three-phase electricity powers large industrial equipment more efficiently than single-phase electricity.

• Three-phase power can be transmitted over long distances with smaller conductor size.

Three-phase transformers are constructed by winding three single-phase transformers on a single core, which is then put into an enclosure filled with dielectric oil. Because the dielectric oil does not conduct electric current, it provides insulation between the winding and the enclosure. The dielectric oil also acts as a coolant, and helps prevent moisture that can deteriorate the winding insulation.

There are more than 150 manufacturers and distributors of 3-phase transformers, many of which will custom build according to your specifications.

Where to Buy...

If you’re looking to buy or need more information about three-phase transformers, be sure to visit the suppliers listed on this page.

• How a Three Phase Transformer Changes Values of Voltages
  
  A brief look at how three phase transformers change the values of voltages in three phase power distribution systems.