Voltage transformers (VT) are used in electrical grids for metering and/or protection purposes. The high requirements regarding their precision demand a calibration ...

For a PDF version of this article, click here. Power converters based on the forward topology offer high efficiency and good power-handling capability in applications up to several hundred watts. The ...

The primary function of a current transformer (CT) is to provide accurate current information to protective relays. But when a CT saturates and can no longer perform this function, the lack of ...

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 ...

Violations of the National Electrical Code (NEC) regarding transformers are often encountered while performing electrical plan reviews. There are far too many NEC requirements to explain in just one ...