Arc Flash Demonstration
VIDEO INFO
Added: Feb 16, 2007
Description:
An electrical explosion, or 'arc flash', occurs when one or more high current arcs are created between energized electrical conductors or between an energized conductor and neutral ground. Once initiated, the resulting arc(s) can bridge significant distances even though the voltage is relatively low. In the above demonstration, arcs were intentionally initiated by bridging wires across three copper bus bars in a testing laboratory. Three phase 480 volt power was then applied across the bus bars for about 1 second. When power is applied, the wires immediately explode, forming a conductive plasma which forms high current power arcs between the bus bars. The actual fault current in the below demonstration is not known, but is likely in the range of tens of kiloamps.
Rating:[GA] General Audiences
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