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 ...

Three-phase power transformer according to DIN EN 61558, VDE 0570, part 2-1 or three-phase isolating transformer according to DIN EN 61558, VDE 0570, part 2-4 or three-phase safety transformer ...

Last month's Code Calculations article covered transformer calculation definitions and some specifics of delta transformer calculations. This month we turn our attention to the differences between ...

Three-phase step transformer according to DIN EN 61558, VDE 0570, part 2-13. Common input and output coils. Coil without galvanic separation. Connections: Terminals with screw connection, prepared for ...

In the original version of this article, the second figure contained an error. The image has been updated. It’s important for engineers to have a good, working ...

One of the more popular three-phase electrical services supplied to medium-size commercial buildings is the Wye or Star configuration transformer. The name comes from the transformer’s secondary ...

Linemen from North Carolina municipals practice three-phase transformer banking using the new Load-Trainer II Transformer Simulators. When apprentice linemen step out into the line trade, utilities ...