Whenever a power or distribution transformer is isolated from the power system, it is probable that residual magnetism remains in the core due to the phase shift. However, residual magnetism also ...

When alternating current (AC) prevailed over direct current (DC) in the late 1800s, one of the deciding factors was the need for voltage levels to be raised and lowered throughout the power system to ...

Thank you for visiting one of our most popular classic articles. If you’d like to see updated information on this topic, please check out this recently published article, Transformer Calculations.

AutomationDirect’s line of power products now includes Acme Electric’s dry-type encapsulated 3-phase transformers. The NEMA 3R transformers are excellent for dust or lint-laden atmospheres and are ...