Relay and Metering Upgrades

On average, five to ten people are injured every day in the US as a result of arc flash burns. The intensity of an arc flash is measured by incident energy which is a calculation that determines the Hazard Risk Category and PPE requirements for personnel working on affected electrical equipment. Because incident energy is directly proportional to the total arcing time, most strategies for arc flash mitigation focus on faster detection and clearing times of the arc flash. The two main components of this time are the protective relay and the circuit breaker interrupting times. By interrupting the arc flash energy wave early, the hazard to personnel can be greatly reduced.

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