Distribution transformer assign low voltage power to the customers who use electricity at the end of the supply grid. These are the transformers that provide the useful power for lighting the stores on Main street, and the factories in the Industrial Park. They may be installed in so many locations in large numbers because they are easy to install, safe, efficient, and trouble-free.

The generator transformer is the first essential component for energy transmission, allowing energy supplied by the generator to be transferred to the network at the required voltage.

An electric furnace transformer is used to supply power to an electric furnace, which lowers the high voltage to the furnace-required lower voltage. Its type varies with the electric furnace, so the transformer has many types.

Dual voltage transformer is defined as a transformer that consists of two separate windings which can be connected in series to handle a specified voltage and kVA, or in parallel to handle the same kVA at one half the series connected voltage. The voltage is changed by operating a dual voltage switch.

An auto transformer (sometimes called autoformer) is an electrical transformer with only one winding. The winding has at least three electrical connection points called taps.

An isolation transformer is designed to address the problems associated with referencing its internal shields to ground. It is constructed with two isolated Faraday shields between the primary and secondary windings.

Transformer rectifiers are used to convert three phase power supply to quality DC power supply. Some of the rectifying transformers units are also suitable for use in severe environments and comply to military standards.

Harmonic currents generated by nonlinear loads can cause problems in the power system. Transformer are particularly vulnerable to overheating and premature failure. To protect against transformer overheating caused by harmonic, designers can specify derated equipment, i.e. oversized transformer that will run at a fracton to their rated capacity, or K-Factor transformer specifically designed to accomodate harmonic currents.

A Scott-T transformer (also called a Scott connection) is a type of circuit used to derive two phase (2-φ) current from a three phase (3-φ) source or vice-versa. The Scott connection evenly distributes a balanced load between the phases of the source.

A buck–boost transformer is a type of auto transformer used to make small adjustments to the voltage applied to alternating current equipment. It was developed to supply voltages for two main categories; the first of which is when the local power is consistently not high or low enough to correctly and safely run the equipment at its rated power load.