Application of existing technologies to reduce arc-flash hazards

Abstract

Protective relay engineers have long been concerned with protecting power systems and all of the equipment associated with those systems. We routinely apply relays to limit damage to apparatus (e.g., transmission and distribution lines, power transformers, buses, generators, motors, etc.) and protect against, or reduce, the impact of electrical disturbances on the larger power system (e.g., shedding load for frequency or voltage variations).