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Passive ProtectionActive ProtectionCurrent-Limiting Arc-Quenching SystemsConclusionSince the introduction of arc-resistant electrical equipment, the design paradigm has been to create a method of containing the energy from an arc flash event and redirecting it away from the operator. These methods typically include heavily reinforcing the electrical equipment enclosure using thicker-gauge steel, reinforced hinges and multipoint door latches to contain the arc energy and prevent enclosure fragmentation and burn-through. Mounted on top of the gear, plenums connected to ducts serve to redirect the arc gasses through the top of the equipment and out of the room. Such designs benefit from simplicity and acquisition costs. These passive arc-resistant designs require no electronics or electrical power to function. Minimal technological advancements were required to develop these designs. All that was needed was a more robust equipment enclosure. The incremental costs of such arc-resistant equipment remain relatively low, requiring only the addition of more steel and more...Get price

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Arc Quencher | Article about Arc Quencher by The Free Dictionary

Arc Quencher. a subassembly in a high-voltage switch that is designed to extinguish the electric arc that occurs on the switch contacts when a circuit is broken. The arc is extinguished by rapid cooling and deionization or by fragmenting into several short arcs. In electrical apparatus for voltages up to 1,000 volts (V) the arc quencher consists of a chamber made of an arc-resistant material (ceramics, asbestos cement, asbodin, or special plastics) inside which are partitions.Get price

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