Hello

A distribution transformer or service transformer is a transformer that provides the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customer. ... If mounted on a utility pole, they are called pole-mount transformers.

I hope this information helps you.

Good Luck!!

A distribution transformer or service transformer is a transformer that provides the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customer.
The main function of this transformer is to alter the high voltage to the normal voltage like 240/120 V to use in electric power distribution

Hope this information helps you.