Schweitzer Engineering Laboratories, Inc. (SEL) has announced wide-area-measurement-based control in a transformer relay for the first time. This enhancement to the SEL-487E Transformer Protection ...

The addition of a components and an unused NC contact to a dc supply provides a power-reducing feature to a relay driver circuit. Electromagnetic relays need much less power for holding than they do ...

ENWIN Powerlines, Ltd., the organization responsible for the distribution of electric power in Windsor, Ontario, Canada, has undertaken a major substation automation initiative that will improve ...