![]() Remotely locating the disconnect allows downstream equipment to be de-energized. Until recently, however, de-energizing on the line-side required either a call for a utility outage or the installation of a disconnecting means between the utility and the point of work. Safety and workflow benefits for contractorsĪs you’re probably aware, de-energizing equipment is a critical step in the lockout/tagout (LOTO) procedure as specified in NFPA 70E. The risk of electrical shock is also eliminated because the vault prevents accidental touches, tools, or debris from contacting the energized line-side conductors. The resulting arc flash incident energy (AFIE) outside the vault is limited to no more than 1.2 cal/cm 2. Inside, barriers between the phases elongate and clear arcing faults in 16.66 milliseconds, which is less than one cycle. Instead of a crisis that disrupts your client’s business, the power stays on and operations continue normally until you can perform maintenance.ĪrcBlok works by isolating the line-side connectors in a rugged ANSI/IEEE C37.20.7-2017-rated cable vault. Even if a line-side arcing fault occurs, there is no breaker trip, no unplanned downtime, and no catastrophic equipment damage. It requires no power, is always on, and is certified to extinguish and contain up to five arcing faults before replacement is necessary. How ArcBlok prevents arc flashesĪrcBlok 2500 is a passive, arc flash-prevention solution that is compatible with low-voltage switchboards and motor control centers up to 2,500 amperes. ArcBlok 2500™ by Schneider Electric™ is the latest innovation that accomplishes all four of these outcomes. These controls include equipment designed specifically to avoid, prevent, reduce, and isolate electrical hazards. Engineering controls, which are at the center of a safety-by-design approach, are very effective risk-reduction methods. NFPA 70E requires workers to perform a risk assessment and implement controls to reduce the risk. The safe work practice standards established in National Fire Protection Association ( NFPA 70E®) is your roadmap for reducing and eliminating the risk of shock and arc flash. Though they occur less frequently than shock, the human and economic toll of an arc flash incident is often considerably higher. Many of us have received mild shocks in our lifetime, but when current in excess of 6 milliamperes flows through the body, the effects can be serious or even fatal.Īn arc flash has the potential to cause serious injuries and catastrophic damage to equipment and facilities. It happens when direct contact with energized components causes electrical current to pass through the body. There are two primary hazards associated with electrical equipment - shock and arc flash. It has real-time implications with a direct impact on worker safety and the work environment, both for your staff and your customers. In your industry, safety by design is more than a concept or strategy. ![]() ![]() All of the work and resources that go into designing systems, specifying the right equipment, and developing electrical safety programs are tested every time you interact with electrical equipment. As an electrical contractor, you and your employees are on the front lines of this integration. In a recent blog on mitigating arc flash events, we discussed the importance of integrating safety into electrical design. This audio was created using Microsoft Azure Speech Services.
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