Arc fault accidents that occur during the operation of medium and low voltage power systems are mostly affected by environmental conditions, such as moisture in insulating materials, condensation and dirt on the surface of equipment, which reduces the insulation level of the equipment and causes accidents.
The severity of an arc fault depends on the arc current and the time it takes to clear the arc. The energy generated by the arc rises exponentially with I2t. A total clearing time greater than 100ms can cause varying degrees of damage to equipment, so the shorter the clearing time, the better.
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