Power systems today operate in an environment where reliability and safety must be maintained despite rising loads, expanding ...

Testing relays is both an art and a science. As relay technicians inevitably learn in the field, pure theory-based understanding of protective relays is not nearly enough for the real-world situations ...

Relays are electromechanical devices that use a magnetic solenoid to actual a switch. When current is passed through the solenoid coil, it produces a magnetic field. The magnetic field is strengthened ...

With more than 40 years of experience in the power industry, Tony Giuliante offers a historical perspective on why techniques such as testing and engineering calculations were done the way they were ...