The following technical information are a guideline for the correct use of transformers in various voltage fields.
The differences in the construction of the transformers are determined by the installation and equipment requirements. We summarize here the main definitions set down in EN 61558.1 and part 2 standard. Other standards which we refer to are: CEI 14-5,
14-8, EN 60076-1 (power transformers), UL 5085-1-2-3.