Schweitzer Engineering Laboratories, Inc. (SEL) has announced the immediate availability of arc-flash detection capability in the SEL-751A Feeder Protection Relay, Schweitzer Engineering Laboratories, ...

In the not-so-distant past, electrical workers routinely racked out breakers in the normal course of their jobs. They did this with little concern or knowledge of the hazards to which they were ...

Within the electrical industry, most workers have become familiar with the term arc flash and the hazard it represents. While training and education have helped in understanding the hazard as well as ...

Working in open environments presents challenges for containing electrical hazards. Here’s what to keep in mind in order to keep workers safe.

The comparison figure between no arc-fault state and arc-fault state under various type of loads, ranging from 30 W–60 W. An arc fault is an electrical discharge between two conductors due to poor ...

A quick response to arc faults is essential. However, a lot of available protection equipment is prone to registering accidental trips rather than faults, as well as responding too slowly or ...

Arc fault detection is a critical issue in modern power and photovoltaic (PV) systems owing to the significant safety risks posed by unintended electrical discharges. These faults, occurring when ...

In PV systems today, intermittent connections or insulation deterioration (faults) can cause DC circuits to generate arcs of considerable energy. The arc, reaching temperatures of over 3,000 degrees C ...

April 16, 2010 -- Reclosers were first invented in the 1940s. They utilized oil interruption and oil insulation inside heavy mild steel tanks that contained faults in the event of internal arc faults.

Every day, an estimated five to 10 arc flash incidents occur and more than 2,000 people are hospitalized each year, according to The National Fire Protection Association (NFPA). With arc flash and ...

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