Distribution Transformer

Introduction

Previously, you have learnt in which the transformer is an electrical device used for stepping down or stepping up the supply voltage. You know that the distribution transformer (DTR) steps down the basic distribution voltage of 11 kV or 33 kV to secondary distribution of 415V among phases and 240V between phase and neutral.

Here, you will study about distribution transformers in detail covering their selection criteria, causes of failure, tests on DTRs and ways of improving their life and efficiency.