Framatome and SEL have installed the first safety-related digital protection relays in a US reactor at the Columbia GS in Washington.

Did you ever wonder how the mechanical voltage regulator — that big black box wired up to the generator on a car from the ’60s or before — worked? [Jonelsonster] has some ...

Although it dates back to the early days of the Marconi Company in the 1920s, the Franklin oscillator has remained a ...

Abstract: to high voltage and current levels of high voltage DC (HVDC) relays and the absence of natural zero crossings in DC system, the arc generated during the breaking process of the relay has ...

Abstract: This paper is focused on numerical investigation of arc during the contact opening process of a DC Relay product. A 3-D air arc model based on magneto-hydrodynamic theory was built and ...